JP2017197726A - Fireproof sheet having flexibility, laminated fireproof sheet, and method for producing them - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fireproof sheet which enables formation of a foam layer by heating at the time of fire breaking, can delay a rise of temperature of an adherent, and has such flexibility as to follow to the adherent having a curved surface, and to provide a laminated fireproof sheet having flexibility.SOLUTION: A fireproof sheet having flexibility is formed from a foamable fireproof composition which contains (A) an acrylic resin, (B) 50-200 pts.wt. of a phosphorous flame retardant, (C) 10-60 pts.wt. of a coating agent, (D) 15-100 pts.wt. of a carbonization agent, and (E) 15-60 pts.wt. of a flame-retardant filler, with respect to 100 pts.wt. of (A) the acrylic resin, where the maximum elongation at room temperature of the fireproof sheet is 200% or more.SELECTED DRAWING: Figure 1

Description

  The present invention is a fire that is applied to a general structure, a nuclear power plant structure and components, an aircraft, a train, a vehicle such as an automobile, a ship, an elevator, a pipe, an electric wire, a wiring device, etc. The present invention relates to a fireproof sheet having flexibility, which is made of a foamable fireproof composition that foams by heating to form a carbonized layer and suppresses a temperature rise of an adherend.

  Wallpaper, plywood, wood, inorganic board, concrete, mortar, FRP (Fiber Reinforced Plastics), GFRP (Glass Fiber Reinforced Plastics), plastics, ceramics, used for general structures, aircraft, trains, automobiles, ships, etc. As a material for protecting constituent materials such as glass and metal from a fire, a foamable refractory paint that foams and forms a carbonized layer when a fire occurs is known.

  For example, Patent Document 1 discloses a foam-based fireproof paint obtained by adding a phosphate as a foaming agent and a polysaccharide / polyhydric alcohol, an inorganic powder, a melamine resin, and an acrylic resin as a charcoal layer forming agent. .

  Patent Document 2 discloses a foaming-type fireproof coating composition mainly composed of a self-crosslinking aqueous resin, a phosphorus-based flame retardant, a foaming agent, a polysaccharide and / or a polyhydric alcohol.

  Further, Patent Document 3 discloses a foamable fireproof coating composition containing an acrylic resin emulsion, a phosphorus flame retardant, a coating agent, a carbonizing agent, and a flame retardant filler.

  However, these conventional methods for imparting fire resistance using foamable fire-resistant paints require coating to be applied a plurality of times, so it takes time to dry the coating film, and the construction period becomes longer and costs increase. There was a problem.

  In order to avoid such a problem, Patent Document 4 discloses a flexible sheet-like molded article made of a foam-type fireproof composition containing an acrylic block copolymer, a phosphorus compound, and a polyfunctional alcohol. However, when fixing the sheet-like molded product to the surface of the object to be coated, it is necessary to take a method of physically fixing it to the object to be coated with an adhesive, screws, bolts, screws, etc. There is a problem that it takes time and effort to apply the film to the surface of the object to be coated.

  In addition, a fireproof sheet formed from a foamable fireproof composition is foamed during a fire to form a carbonized layer, and this carbonized layer serves as a heat insulating layer to increase the temperature of the adherend such as a general structure. Suppress. Therefore, when the thickness of the carbonized layer is thick, the effect of suppressing the temperature rise is high. However, when the thickness of the carbonized layer is thick, the thickness of the carbonized layer formed by heating when designing a general structure or the like to which the fireproof sheet is attached. Therefore, there is a need to design in consideration of the thickness of the carbonized layer, such as leaving a gap in a general structure or the like. Therefore, there is a demand for a fireproof sheet having a thin carbonized layer and an excellent heat insulating effect.

JP 7-331124 A JP 2012-158770 A JP 2014-136744 A JP 2011-52192 A

  The present invention has been made in view of such a current situation, such as pillars, walls, beams, doors, etc. of nuclear power plants and general buildings, or vehicles such as aircraft, trains, automobiles, ships, elevators, etc. Can be easily affixed to adhesives such as pipes, electric wires, and wiring devices without using adhesives, screws, bolts, screws, etc. A fireproof sheet having flexibility capable of following a adherend having a curved surface and a laminated fireproof sheet having flexibility, capable of forming a carbonized layer by heating to form a carbonized layer and suppressing a temperature rise of the adherend. The purpose is to provide.

  The fire-resistant sheet having flexibility according to the present invention has a front surface and a back surface. From the foamable fire-resistant composition for applying a fire-resistant treatment to the adherend by attaching at least one surface to the adherend. A fire-resistant sheet comprising (A) an acrylic resin, and (A) 100 parts by weight of the acrylic resin, (B) 50 to 200 parts by weight of a phosphorus-based flame retardant, and (C) a coating agent. 10 to 60 parts by weight, (D) 15 to 100 parts by weight of carbonizing agent, (E) 15 to 60 parts by weight of flame retardant filler, and the maximum elongation of the refractory sheet at room temperature is 200% or more. It is characterized by that.

  The fireproof sheet having flexibility according to the present invention further includes (F) water, and the (F) water is electrolyzed water.

  In the fireproof sheet having flexibility according to the present invention, the (A) acrylic resin is an acrylic resin emulsion in which the (A) acrylic resin is dispersed in water, and the viscosity of the acrylic resin emulsion is 400 mPas. -It is characterized by being s-1200mPa * s.

  In the fireproof sheet having flexibility according to the present invention, a glass transition temperature (Tg) of the acrylic resin emulsion is -50 ° C to -30 ° C.

  The flexible fireproof sheet according to the present invention is characterized in that the maximum elongation of the fireproof sheet at 200 ° C. is 50% or more.

  The fireproof sheet having flexibility according to the present invention is characterized in that the swelling ratio with respect to water after half a year is 10% or less.

  The fireproof sheet having flexibility according to the present invention is characterized in that the thickness of the carbonized layer formed by heating is 15 mm or less.

  The flexible fireproof sheet according to the present invention is characterized in that when the fireproof sheet is bent at a right angle, the sheet is not cracked.

  In the fireproof sheet having flexibility according to the present invention, a release sheet is laminated on at least one of the front surface and the back surface, and the release sheet can be peeled off and attached to the adherend.

  The fireproof sheet having flexibility according to the present invention may be a flexible fireproof sheet in which a fiber sheet is laminated on at least one of the front surface and the back surface.

  The flexible fire-resistant sheet according to the present invention is a flexible fire-resistant sheet in which a fiber sheet is laminated on one of the front surface and the back surface, and a release sheet is laminated on the other surface. There may be.

  The fireproof sheet having flexibility according to the present invention is a laminated fireproof sheet having flexibility, in which a fiber sheet is laminated on one of the front surface and the back surface, and a release sheet is laminated on the fiber sheet. It may be a sheet.

  In the laminated fireproof sheet having flexibility according to the present invention, the fibers of the fiber sheet may be one or more selected from glass fibers, carbon fibers, aramid fibers, basalt fibers, or metal fibers.

  In the laminated fireproof sheet having flexibility according to the present invention, an acrylic resin may be applied to the surface of the fiber sheet.

The method for producing a flexible fireproof sheet according to the present invention includes (A) an acrylic resin, (B) a phosphorus flame retardant, (C) a coating agent, (D) a carbonizing agent, and (E) a flame retardant filling. A method for producing a refractory sheet comprising a foamable refractory composition containing an agent,
(B) Phosphoric flame retardant (50) to 200 parts by weight, (C) 10 to 60 parts by weight of coating agent, based on (A) acrylic resin and 100 parts by weight of (A) acrylic resin, D) mixing 15 to 100 parts by weight of carbonizing agent and (E) 15 to 60 parts by weight of flame retardant filler to prepare a foamable refractory composition;
Preparing a release sheet;
Applying the foamable refractory composition on the release sheet;
Uniformizing the thickness of the foamable refractory composition applied on the release sheet, and forming a laminate sheet of the release sheet and the foamable refractory composition;
Drying the laminated sheet.

The method for producing a flexible laminated fireproof sheet according to the present invention includes (A) an acrylic resin, (B) a phosphorus flame retardant, (C) a coating agent, (D) a carbonizing agent, and (E) a flame retardant. A method for producing a laminated fireproof sheet comprising a foamable fireproof composition containing a porous filler,
(B) Phosphoric flame retardant (50) to 200 parts by weight, (C) 10 to 60 parts by weight of coating agent, based on (A) acrylic resin and 100 parts by weight of (A) acrylic resin, D) mixing 15 to 100 parts by weight of carbonizing agent and (E) 15 to 60 parts by weight of flame retardant filler to prepare a foamable refractory composition;
Preparing a release sheet and a fiber sheet;
Applying the foamable refractory composition on the release sheet;
Uniformizing the thickness of the foamable refractory composition applied on the release sheet, and forming a laminate sheet of the release sheet and the foamable refractory composition;
A drying step of drying the molded laminated sheet;
And laminating the fiber sheet on the dried laminated sheet, and crimping the laminated sheet and the fiber sheet.

  The flexible fire-resistant sheet and the flexible laminated fire-resistant sheet of the present invention have significantly improved followability and flexibility to the adherend having a curved surface, so that wood, concrete, mortar, FRP (Fiber Reinforced Plastics) ), GFRP (Glass Fiber Reinforced Plastics), plastics, ceramics, glass, metal, paper, fiber, synthetic resin, rubber, silicone and the like. Also, pillars, walls, beams, doors, etc. of nuclear power plants and general buildings, vehicles such as airplanes, trains, cars, etc., structures such as ships, elevators and their components, piping, electric wires It is particularly useful for imparting fire resistance to an adherend such as a wiring device.

  Moreover, since the fireproof sheet having flexibility and the laminated fireproof sheet having flexibility according to the present invention can be used for construction simply by pasting a sheet manufactured in a factory in advance to an adherend, the construction period is short. And the cost can be reduced, and since it is not necessary to use an adhesive, screws, bolts, screws, or the like, the construction can be facilitated.

  Furthermore, since the fireproof sheet having flexibility and the laminated fireproof sheet having flexibility have a low swelling rate with respect to water, the fireproof sheet can be used even in a place with condensation or moisture.

  In addition, the fireproof sheet having flexibility and the laminated fireproof sheet having flexibility according to the present invention are general structures because the thickness of the carbonized layer formed by foaming by heating in the event of a fire is thin and excellent in heat insulation performance. For example, it can be suitably used.

(A) The front view of the fireproof sheet which has the softness | flexibility by which the peeling sheet was laminated | stacked only on one side which concerns on this invention. (B) The front view of the fireproof sheet which has the softness | flexibility by which the peeling sheet was laminated | stacked on both surfaces which concern on this invention. (C) The front view of the laminated | stacked fire-resistant sheet | seat which has the softness | flexibility by which the peeling sheet was laminated | stacked on the one surface which concerns on this invention, and the fiber sheet was laminated | stacked on the other surface. (D) The front view of the laminated | stacked fire-resistant sheet | seat which has a softness | flexibility with which the fiber sheet was laminated | stacked on one surface which concerns on this invention, and the peeling sheet was laminated | stacked on this fiber sheet. (A) Schematic of the manufacturing process of the fire-resistant sheet | seat which has the softness | flexibility by which the peeling sheet was laminated | stacked on one side which concerns on this invention. (B) The schematic of the manufacturing process of the fireproof sheet which has the softness | flexibility by which the peeling sheet was laminated | stacked on both surfaces which concern on this invention. (A) An example of an embodiment of a laminating method when laminating a plurality of flexible fireproof sheets according to the present invention. (B) An example of another embodiment of a laminating method in the case of laminating a plurality of flexible fireproof sheets according to the present invention. (A) The schematic of the manufacturing process of the laminated | stacked fireproof sheet which has the softness | flexibility in which the peeling sheet was laminated | stacked on one surface of the fireproof sheet which has the softness | flexibility which concerns on this invention, and the fiber sheet was laminated | stacked on the other surface. (B) Outline of a manufacturing process of a laminated fireproof sheet having flexibility, in which a fiber sheet is laminated on one surface of the fireproof sheet having flexibility according to the present invention, and a release sheet is further laminated on the fiber sheet. Figure. (A) Schematic of a combustion test apparatus. (B) Sectional drawing of a combustion test apparatus. (C) The figure which shows the measurement location of a combustion test. The figure which shows the result of the combustion test of the laminated | stacked fireproof sheet which has a softness | flexibility which concerns on this invention.

I. Fire-resistant sheet The fire-resistant sheet having flexibility according to the present invention has a front surface and a back surface, and has a foamable fire-resistant composition for affixing at least one surface to an adherend and fire-treating the adherend. It is a fireproof sheet made of material.

  And the fire-resistant sheet | seat which has the softness | flexibility of this invention is 50-200 (B) phosphorus flame retardant with respect to 100 weight part of (A) acrylic resin and the said (A) acrylic resin as a component. (C) 10 to 60 parts by weight of the coating agent, (D) 15 to 100 parts by weight of the carbonizing agent, (E) 15 to 60 parts by weight of the flame retardant filler, The maximum elongation is 200% or more, and it has flexibility to follow an adherend having a curved surface.

[1] Component materials (A) Acrylic resin in the fireproof sheet having flexibility according to the present invention includes methacrylic acid, methyl methacrylate, ethyl methacrylate, butyl methacrylate, 2-ethylhexyl methacrylate, acrylic acid, Homopolymers or copolymers formed from acrylic monomers such as methyl acrylate, ethyl acrylate, butyl acrylate, 2-ethylhexyl acrylate, acrylonitrile, methacrylonitrile, acrylamide, dimethylacrylamide, or the acrylic monomers and other Mention may be made of copolymers with monomers. Examples of other monomers include styrene, vinyl toluene, itaconic acid, crotonic acid, fumaric acid, maleic acid and the like. These may be used alone or in combination of two or more. In the fire-resistant sheet having flexibility according to the present invention, it is preferable to use a copolymer. In the fireproof sheet having flexibility according to the present invention, it is preferable to use a water-based acrylic resin.

  The (A) acrylic resin can be used in a solid state such as a powder state or a granular state, or in a liquid state such as an emulsion, but the acrylic resin in which the acrylic resin is dispersed in water. An emulsion can be used suitably. The acrylic resin content in the acrylic resin emulsion is preferably 30 to 70% by weight.

  The viscosity of the acrylic resin emulsion is preferably 400 mPa · s to 1200 mPa · s. When the viscosity of the acrylic resin emulsion is 400 mPa · s or less, it becomes difficult to increase the thickness of the flexible fireproof sheet of the present invention, and the viscosity of the acrylic resin emulsion is 1200 mPa · s or more. Since it becomes difficult to uniformly mix the foamable refractory composition, it becomes difficult to produce the fire-resistant sheet having flexibility of the present invention.

  Moreover, it is preferable that the glass transition temperature (Tg) of the said acrylic resin emulsion is -50 degreeC--30 degreeC. Furthermore, the pH of the acrylic resin emulsion is preferably pH 1.5 to pH 5.0, and the particle diameter is preferably 0.05 μm to 0.4 μm.

  As the (B) phosphorus-based flame retardant in the fire-resistant sheet having flexibility according to the present invention, ammonium phosphate, ammonium polyphosphate, microencapsulated ammonium polyphosphate, foamable phosphorus-aluminum compound, and the like are preferable. It is particularly preferable to use microencapsulated ammonium polyphosphate in which ammonium phosphate, ammonium polyphosphate, or ammonium polyphosphate is coated with a resin from the viewpoint of properties. These may be used alone or in combination of two or more. The phosphorus-based flame retardant also serves as a foaming agent.

  The (B) phosphorus-based flame retardant is preferably contained in an amount of 50 to 200 parts by weight, particularly preferably 70 to 130 parts by weight, based on 100 parts by weight of the (A) acrylic resin. (A) When the phosphorus-based flame retardant is 50 parts by weight or less with respect to 100 parts by weight of the acrylic resin, the fire resistance performance of the fire-resistant sheet having flexibility according to the present invention is deteriorated. descend.

  Examples of the (C) coating agent in the flexible fire-resistant sheet of the present invention include melamine resin, urea resin, guanamine resin, melamine, urea, guanamine, guanidine, guanidine sulfamate, dicyanamide, dicyandiamide and the like. The melamine resin is not particularly limited as long as it is a resin obtained by polycondensation of melamine and formaldehyde and various derivatives thereof. For example, methyl etherified melamine resin, ethyl etherified melamine resin, propyl etherified melamine resin, alkyl etherified melamine resin such as butyl etherified melamine resin, methylated melamine resin, ethylated melamine resin, propylated melamine resin, butylated melamine Examples thereof include alkylated melamine resins such as resins. These may be used alone or in combination of two or more. A coating agent plays the role which coat | covers (B) phosphorus flame retardant and (E) flame retardant filler, and prevents moisture absorption.

  The (C) coating agent is preferably contained in an amount of 10 to 60 parts by weight, particularly preferably 20 to 45 parts by weight, based on 100 parts by weight of the (A) acrylic resin.

  As the carbonizing agent (D) in the flexible fire-resistant sheet of the present invention, polysaccharides, polyhydric alcohols and the like are preferable. For example, polysaccharides such as glucose and sucrose, pentaerythritol, dipentaerythritol, polypentaerythrul List polyhydric alcohols such as tol, tris (2-hydroxyethyl) isocyanate, triethylene glycol, sorbitol, resorcinol, glycerin, trimethylol methane, trimethylol propane, diethylene glycol, propylene glycol, hexamethylene glycol, inositol Can do. These may be used alone or in combination of two or more.

  The (D) carbonizing agent is preferably contained in an amount of 15 to 100 parts by weight, particularly preferably 30 to 80 parts by weight, based on 100 parts by weight of the (A) acrylic resin.

  Examples of the flame retardant filler (E) in the fireproof sheet having flexibility according to the present invention include aluminum hydroxide and magnesium hydroxide. These may be used alone or in combination of two or more.

  The flame retardant filler (E) is preferably contained in an amount of 15 to 60 parts by weight, particularly preferably 25 to 50 parts by weight, based on 100 parts by weight of the (A) acrylic resin.

  The fireproof sheet having flexibility according to the present invention described above preferably contains (F) water. The (F) water that can be used in the present invention is not particularly limited as long as it is generally used. For example, industrial water, tap water, well water, electrolyzed water, ion exchange water, pure water and the like can be mentioned. Among these, electrolyzed water is preferably used, alkaline electrolyzed water is more preferably used, and alkaline electrolyzed water having a pH of 10 to 14 is particularly preferably used. These may be used alone or in combination of two or more.

  The (F) water is preferably added in an amount of 30 to 200 parts by weight per 100 parts by weight of the (A) acrylic resin. In addition, the temperature of (F) water is preferably about 20 ° C to 80 ° C.

  In the fire-resistant sheet | seat which has the softness | flexibility of this invention, (G) pigment can be contained as needed other than the said component. Examples of the pigment include coloring pigments, extender pigments, rust preventive pigments, and the like, for example, titanium oxide, zinc oxide, carbon black, ferric oxide (Bengara), lead chromate (molybdate orange), yellow lead, yellow Inorganic color pigments such as iron oxide, ocher, ultramarine cobalt green, azo, naphthol, pyrazolone, anthraquinone, perylene, quinacridone, disazo, isoindolinone, benzimidazole, phthalocyanine, quinophthalone Organic pigments such as heavy calcium carbonate, clay, kaolin, talc, precipitated barium sulfate, barium carbonate, white carbon, diatomaceous earth and the like. These may be used alone or in combination of two or more.

  The (G) pigment is preferably contained in an amount of 3 to 15 parts by weight based on 100 parts by weight of the (A) acrylic resin.

  The fireproof sheet having flexibility according to the present invention may further contain a thickener, an antifoaming agent, a dispersant, a preservative, and a fungicide as necessary.

  As the thickener used in the present invention, any aqueous thickener can be used. For example, polyvinyl alcohol, polyvinylpyrrolidone, methylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, aqueous cellulose, polyacrylamide, Examples thereof include organic thickeners such as polyethylene oxide and inorganic thickeners such as bentonite. These may be used alone or in combination of two or more.

  Examples of the antifoaming agent used in the present invention include low molecular defoaming agents such as lower alcohols, higher alcohols, fats and oils, fatty acids, fatty acid esters, phosphate esters, metal soaps, and mineral oils. And polyether-based and silicone-based polymer antifoaming agents. These may be used alone or in combination of two or more.

  The dispersant used in the present invention is not particularly limited as long as it improves the dispersion stability of epoxy resins, polyamines, pigments, and the like, and known ones can be used. These may be used alone or in combination of two or more.

[2] Preparation / Manufacturing Method (Manufacturing Embodiment 1)
The fireproof sheet having flexibility according to the present invention (hereinafter also referred to as “fireproof sheet”) has a maximum elongation at room temperature of 200% or more, and its production method is, for example,
(Formwork preparation process) The process of preparing a formwork,
(Preparation process) (A) 50-200 weight part of (B) phosphorus flame retardant and 10-60 weight of coating agent with respect to 100 weight part of (A) acrylic resin and the said (A) acrylic resin. Part of (D) 15 to 100 parts by weight of a carbonizing agent, and (E) 15 to 60 parts by weight of a flame retardant filler, and preparing a foamable refractory composition,
(Applying step) Step of applying the foamable refractory composition in the mold,
(Molding process) The process of equalizing the thickness of the foamable refractory composition applied in the mold and molding the sheet of the foamable refractory composition,
(Drying process) The process of drying the sheet | seat of the said foamable refractory composition,
including.

  In the above (preparation step), (A) acrylic resin, (B) phosphorus flame retardant, (C) coating agent, (D) carbonizer, (E) flame retardant filler, and as necessary If (F) water, (G) pigment, thickener, antifoaming agent, antiseptic, fungicide, dispersant, etc. are uniformly mixed by a conventionally known mixing method to prepare a foamable refractory composition. Good.

  Examples of methods for preparing such a foamable refractory composition include (F) water with (A) acrylic resin, (B) phosphorus flame retardant, (C) coating agent, (D) carbonizing agent, ( E) A flame-retardant filler etc. may be added collectively or separately, and then mixed and uniformly dispersed by stirring or the like. Or (F) water is added to (A) acrylic resin, (B) phosphorus flame retardant, (C) coating agent, (D) carbonization agent, (E) flame retardant filler, etc. You may mix and disperse | distribute uniformly.

  The prepared foamable refractory composition preferably has a solid content of 45% to 85%. The foamable refractory composition preferably has a viscosity of 4000 mPa · s to 25000 mPa · s.

  In the above (molding step), the adjusted foamable refractory composition is molded into a sheet using a conventionally known method such as injection molding, extrusion molding, calendar molding, compression molding, thermoforming, or the like. Can do.

  In the above example, the fire-resistant sheet having flexibility according to the present invention is made of a rectangular form with a masking tape having a thickness of several millimeters (form preparation step), and the prepared foamed fire-resistant composition is used as a form. Apply with a plastering iron evenly (coating and molding process), let it air dry at room temperature for about 2 days (drying process), remove the masking tape and dry the sheet of foamed refractory composition The fireproof sheet having flexibility according to the present invention can be manufactured.

  The fireproof sheet having flexibility according to the present invention formed as described above has a maximum elongation at room temperature of 200% or more, preferably a maximum elongation at room temperature of 300% or more, more preferably room temperature. This is a fireproof sheet having a maximum elongation of 350% or more and having a flexibility capable of following an adherend having a curved surface. The maximum elongation is, for example, Autograph AG-100kNX (load cell 5 kN) manufactured by Shimadzu Corporation, test piece dimensions: 25 × 150 mm, distance between gripping tools: 50 mm, test speed: 100 mm / min, test temperature It can be measured at 23 ° C. (room temperature).

  The flexible fire-resistant sheet of the present invention has a maximum elongation in an environment at 200 ° C. of 50% or more, preferably a maximum elongation at 200 ° C. of 70% or more, more preferably 200 ° C. It is a fireproof sheet having a maximum elongation of 100% or more and having a flexibility capable of following an adherend having a curved surface even in an environment of 200 ° C. The maximum elongation at 200 ° C. was also made using AG-100kNX (load cell 5 kN) manufactured by Shimadzu Corporation, test piece dimensions: 25 × 150 mm, distance between grippers: 50 mm, test speed: 100 mm / min, test temperature It can be measured at 200 ° C.

  That is, the flexible fire-resistant sheet of the present invention can be adjusted so that the maximum elongation at room temperature is 200% or more and the maximum elongation at 200 ° C. is 50%. Further, the maximum elongation at room temperature is preferably 300% or more, and the maximum elongation at 200 ° C. can be adjusted to be 70% or more. More preferably, the maximum elongation at room temperature is 350%. %, And the maximum elongation at 200 ° C. can be adjusted to be 100% or more.

  Since the fireproof sheet having flexibility according to the present invention has very high flexibility, the sheet is not cracked, peeled off or broken when the sheet is bent at a right angle. Therefore, the fireproof sheet having flexibility according to the present invention can be suitably used for an adherend having a curved surface.

  Although there is no restriction | limiting in particular in the thickness of the fireproof sheet which has a softness | flexibility of this invention, Preferably it is about 0.1 mm to 10 mm, More preferably, it is good that it is about 1 mm to 6 mm. The width and length of the fireproof sheet are not particularly limited, but the width is preferably about 20 cm to 1 m and the length is preferably about 20 cm to 30 m.

  The refractory sheet having flexibility according to the present invention preferably has a swelling ratio with water of 10% or less after 6 months, and more preferably 5% or less. This is because if the fireproof sheet swells due to condensation or moisture, it becomes easy to peel off.

  In the fire-resistant sheet having flexibility according to the present invention, the thickness of the carbonized layer formed by foaming by heating when a fire breaks out is preferably 20 mm or less, and more preferably 15 mm or less. If the thickness of the carbonized layer that is formed by foaming when heated in the event of a fire is large, when designing a structure to which a fireproof sheet is applied, there is a gap in the structure in consideration of the thickness of the carbonized layer that is formed by heating. This is because there is a need to design in consideration of the thickness of the carbonized layer, such as keeping it open. In addition, since the carbonized layer plays the role of a heat insulating layer, the thickness of the carbonized layer is preferably 5 mm or more and 20 mm or less, and more preferably 7 mm or more and 15 mm or less.

(Embodiment 2 of manufacture) ... Lamination | stacking of peeling sheet It is preferable that the fireproof sheet which has the softness | flexibility of this invention has the form by which the peeling sheet was laminated | stacked on the at least one surface of the said fireproof sheet. The form in which the release sheet is laminated on at least one surface may be a form in which the release sheet 4 is laminated only on one surface as shown in FIG. ), The release sheet 4 may be laminated on both sides.

  There is no restriction | limiting in particular as a peeling sheet which can be used for this invention, A conventional thing can be used. For example, polyesters such as polyethylene terephthalate and polybutylene terephthalate, polyethylene, polypropylene, polybutene, polybutadiene, polyurethane, polystyrene, polycarbonate and other synthetic resin films, fine paper, glassine paper, coated paper, nonwoven fabric, cloth, foamed sheet and metal foil, In addition, a base material such as a laminate that has been subjected to a release treatment such as a silicone resin treatment, a long-chain alkyl resin treatment, an olefin resin treatment, or a fluorine resin treatment for improving the peelability is used. be able to.

As shown in FIG. 1A, a conventionally known method can be used as a method for producing a flexible fireproof sheet 1 having a release sheet 4 laminated on at least one surface. For example, as shown in FIG. 2 (a), the fireproof sheet 1 having flexibility in which the release sheet 4 is laminated on one surface is as follows.
(Preparation process) (A) 50-200 weight part of (B) phosphorus flame retardant and 10-60 weight of coating agent with respect to 100 weight part of (A) acrylic resin and the said (A) acrylic resin. A step of preparing a foamable refractory composition 5 by mixing 15 to 100 parts by weight of (D) a carbonizing agent, and (E) 15 to 60 parts by weight of a flame retardant filler,
(Sheet preparation step) A step of preparing the release sheet 4,
(Application step) Step of applying the foamable refractory composition 5 on the release sheet 4,
(Molding step) The step of homogenizing the thickness of the foamable refractory composition 5 applied on the release sheet 4 with a blade 6 or the like, and molding the laminate sheet of the release sheet 4 and the foamable refractory composition 5;
(Drying step) A step of drying the laminated sheet,
including.

Moreover, the flexible refractory sheet 1 having the release sheet 4 laminated on both sides as shown in FIG. 1B may be obtained by performing the process of laminating the release sheet 4 following the above (molding process). As shown in (b)
(Preparation process) (A) 50-200 weight part of (B) phosphorus flame retardant and 10-60 weight of coating agent with respect to 100 weight part of (A) acrylic resin and the said (A) acrylic resin. A step of preparing a foamable refractory composition 5 by mixing 15 to 100 parts by weight of (D) a carbonizing agent, and (E) 15 to 60 parts by weight of a flame retardant filler,
(Sheet preparation step) A step of preparing the release sheet 4,
(Application step) Step of applying the foamable refractory composition 5 on the release sheet 4,
(Molding process) The process of equalizing the thickness of the said foamable refractory composition 5 apply | coated on the said peeling sheet 4 with the braid | blade 6 etc., and shape | molding the lamination sheet a of the said peeling sheet 4 and this foamable refractory composition 5 ,
(Lamination process) The process of shape | molding the lamination sheet b which laminated | stacked the peeling sheet 4 on the lamination sheet a shape | molded by the said (molding process),
(Drying step) A step of drying the laminated sheet b,
It can manufacture with the manufacturing method containing.

  In the method for producing a flexible fireproof sheet 1 according to the present invention, as shown in FIGS. 2A and 2B, the laminated sheet (or laminated sheet b) is dried in the (drying step). You may have the process (winding process) which winds up the fireproof sheet 1 which has the softness | flexibility formed by a winder.

  The fire-resistant sheet having flexibility in which a release sheet is laminated on at least one surface of the present invention can be attached to an adherend simply by peeling the release sheet without using an adhesive, screws, bolts, screws, or the like. Therefore, construction is easy, and the construction period can be shortened and the cost can be reduced. Moreover, since the fireproof sheet which has the softness | flexibility by which the peeling sheet was laminated | stacked on the at least one surface of this invention does not need to provide an adhesion layer separately in a fireproof sheet, a manufacturing process can be simplified.

(Embodiment 3 of manufacture) ... Lamination | stacking of a plurality of fireproof sheets The fireproof sheet which has the softness | flexibility of this invention is good also as a form with which the said multiple fireproof sheets were laminated | stacked. For example, when the thickness of the fireproof sheet is 0.5 mm, when 0.5 mm, the fireproof is 30 minutes, when two 0.5 mm fireproof sheets are laminated and the total thickness is 1.0 mm, the fireproof is 1 hour. Therefore, it is possible to adjust the number of fireproof sheets to be laminated according to the required fireproof time. In such a refractory sheet, the number of sheets to be laminated is not particularly limited. However, if the total thickness of the sheet exceeds 10 mm, the refractory sheet foams and peels off when the refractory sheet is burned, which is not preferable.

  As a method of laminating a plurality of refractory sheets, for example, when two sheets are laminated, two refractory sheets 1 having a release sheet 4 laminated on one surface are prepared as shown in FIG. And the method of peeling the peeling sheet 4 laminated | stacked on the one fireproof sheet 1, and bonding the surface which peeled the release sheet 4 with the fireproof sheet surface of the other one fireproof sheet 1 is mentioned. Moreover, as shown in FIG.3 (b), the peeling sheet 4 of the one side of the fireproof sheet 1 by which the peeling sheet 4 was laminated | stacked on both surfaces is peeled, and it laminates | stacks by the method of bonding the peeled surface with the fireproof sheet 1. It is also possible.

  When laminating a plurality of the refractory sheets, they may be laminated in advance at a factory, but can be easily laminated at a construction site.

II. Laminated fire-resistant sheet A flexible laminated fire-resistant sheet can be formed by laminating a flexible fiber sheet on the flexible fire-resistant sheet of the present invention described above. By making a laminated fire-resistant sheet having flexibility, when the laminated fire-resistant sheet having flexibility is wound up in the manufacturing process, or a flexible fire-resistant sheet is stuck on an adherend such as a general structure. Sometimes, the extension of the flexible fireproof sheet is suppressed by the fiber sheet, so that the thickness of the flexible fireproof sheet can be kept constant. Moreover, by using a laminated fireproof sheet having flexibility, swelling of the fireproof sheet itself can be suppressed by the laminated fiber sheets.

  The laminated fireproof sheet having flexibility according to the present invention is not particularly limited in the number of fireproof sheets and fiber sheets to be laminated. For example, a fiber sheet is laminated on the fireproof sheet. Alternatively, a fiber sheet may be laminated on a fireproof sheet, and a fireproof sheet may be further laminated thereon.

  The flexible fire-resistant sheet 2 having flexibility according to the present invention can be manufactured by adding a process of laminating fiber sheets in the manufacturing process described in the above (Embodiments 1 and 2). For example, a rectangular mold is made with a masking tape having a thickness of 5 mm (form preparation step), and the foamable refractory composition prepared in the above (preparation step) is uniformly applied to the mold with a plastering iron. (Coating / molding process) After natural drying at room temperature for about 2 days (drying process), the fiber sheet 3 is laminated on the fire-resistant sheet, the fire-resistant sheet and the fiber sheet are pressure-bonded, and the masking tape is removed and pressure-bonded. The laminated fireproof sheet having flexibility can be manufactured by taking it out of the mold.

  As shown in FIG. 1 (c), the laminated fireproof sheet 2 having flexibility according to the present invention has a release sheet 4 laminated on one surface of the flexible fireproof sheet 1, and the other surface. The fiber sheet 3 can have a laminated form.

  Moreover, as shown in FIG.1 (d), the laminated | stacked fireproof sheet 2 which has the softness | flexibility of this invention has the fiber sheet 3 laminated | stacked on one surface of the fireproof sheet 1 which has a softness | flexibility, It is also possible to have a form in which a release sheet 4 is further laminated thereon. In such a form, when the release sheet 4 of the laminated fireproof sheet 2 having flexibility according to the present invention is peeled off and the laminated fireproof sheet is attached to an adherend such as a general structure, the surface of the fiber sheet is used. The fiber sheet is hidden because it is stuck to the adherend. Therefore, the form in which the fiber sheet 3 is laminated on one surface of the fireproof sheet 1 having flexibility and the release sheet 4 is laminated on the fiber sheet 3 is desired to be used in a place where it can be visually observed or to look good. It can be suitably used when used in places. In addition, there is no restriction | limiting in particular as the peeling sheet 4 laminated | stacked, A conventional thing can be used, The same kind of peeling sheet as the fireproof sheet 1 which has the softness | flexibility with which the peeling sheet 4 mentioned above was laminated | stacked can be used.

  Examples of the fiber of the fiber sheet 3 used for the flexible laminated fireproof sheet according to the present invention include glass fiber, carbon fiber, aramid fiber, basalt fiber, metal fiber, and bio fiber. Among these, glass fiber is used. It is preferable to use it. These fiber sheets may be used independently and may use 2 or more types together. The thickness of the fiber sheet is not particularly limited, but it is preferable to use a fiber sheet having a thickness of 0.01 mm or more and less than 2 mm.

  In the laminated fireproof sheet 2 having flexibility according to the present invention, the surface of the fiber sheet 3 may be coated with an acrylic resin. The acrylic resin to be applied is not particularly limited as long as it does not impair the flexibility of the laminated fireproof sheet 2, and conventionally known ones can be used, such as brushes, trowels, rollers, sprays, etc. It can apply | coat by the general application | coating method currently used. By applying acrylic resin to the surface of the fiber sheet, the strength of the fiber can be enhanced and the weather resistance can be improved.

The manufacturing method of the flexible laminated fireproof sheet 2 in which the release sheet 4 is laminated on one surface of the flexible fireproof sheet of the present invention and the fiber sheet 3 is laminated on the other surface is a conventionally known method. Can be used. For example, as shown in FIG.
(Preparation process) (A) 50-200 weight part of (B) phosphorus flame retardant and 10-60 weight of coating agent with respect to 100 weight part of (A) acrylic resin and the said (A) acrylic resin. A step of preparing a foamable refractory composition 5 by mixing 15 to 100 parts by weight of (D) a carbonizing agent, and (E) 15 to 60 parts by weight of a flame retardant filler,
(Sheet preparation step) A step of preparing the release sheet 4 and the fiber sheet 3,
(Application step) Step of applying the foamable refractory composition 5 on the release sheet 4,
(Molding step) The step of homogenizing the thickness of the foamable refractory composition 5 applied on the release sheet 4 with a blade 6 or the like, and molding the laminate sheet of the release sheet and the foamable refractory composition 5;
(Drying step) A drying step of drying the laminated sheet formed in the above (forming step),
(Crimping step) a step of laminating the fiber sheet 3 on the laminated sheet dried in the above (drying step), and crimping the laminated sheet and the fiber sheet 3;
It can manufacture with the manufacturing method containing.

The fiber sheet 3 is laminated on one surface of the flexible fireproof sheet of the present invention, and the production method of the laminated fireproof sheet 2 having flexibility in which the release sheet 4 is further laminated on the fiber sheet 3 is as follows. Conventionally known methods can be used. For example, as shown in FIG.
(Preparation process) (A) 50-200 weight part of (B) phosphorus flame retardant and 10-60 weight of coating agent with respect to 100 weight part of (A) acrylic resin and the said (A) acrylic resin. A step of preparing a foamable refractory composition 5 by mixing 15 to 100 parts by weight of (D) a carbonizing agent, and (E) 15 to 60 parts by weight of a flame retardant filler,
(Sheet preparation step) A step of preparing the release sheet 4 and the fiber sheet 3,
(Application step) Step of applying the foamable refractory composition 5;
(Molding step) The step of homogenizing the thickness of the applied foamable refractory composition 5 with a blade 6 or the like, and molding the fireproof sheet of the foamable refractory composition 5;
(Drying process) A drying process for drying the fireproof sheet molded in the above (molding process),
(Crimping step) The step of laminating the prepared fiber sheet 3 on the fireproof sheet dried in the above (drying step), crimping the fireproof sheet and the fiber sheet 3, and laminating the release sheet 4 thereon. It can manufacture with the manufacturing method containing.

  In addition, in the manufacturing method of the laminated | stacked fireproof sheet 2 which has the softness | flexibility which concerns on this invention, the process of winding up the laminated fireproof sheet 2 which has the softness | flexibility crimped | bonded by (crimping process) with a winder. (Winding step) may be included.

  One of the flexible fire-resistant sheet of the present invention, the release sheet is laminated on one side of the flexible fire-resistant sheet and the fiber sheet is laminated on the other side, or the flexible fire-resistant sheet A flexible fireproof sheet in which a fiber sheet is laminated on the surface and a release sheet 4 is laminated on the fiber sheet can be covered only by peeling the release sheet without using an adhesive, screws, bolts, screws, or the like. Since it can be affixed to the dressing, the construction is easy, and the construction period can be shortened and the cost can be reduced. Moreover, since the said laminated fireproof sheet does not need to provide an adhesion layer separately in a fireproof sheet, a manufacturing process can be simplified.

  The flexible fire-resistant sheet and the flexible laminated fire-resistant sheet of the present invention can be peeled off the release sheet and attached to the adherend. For example, when attached to the ceiling or the like of a general structure May use adhesives, paints, and the like that are commonly used to enhance adhesion.

  EXAMPLES Hereinafter, although this invention is demonstrated in detail using an Example, this invention is not restrict | limited at all by these Examples.

  In Example 1, the flexible fireproof sheet (Production Example 1), the laminated fireproof sheet (Production Example 2), and the conventional fireproof sheet (Comparative Example 1) according to the present invention are processed in the following steps. Produced.

(Production Example 1)
Fabrication of flexible fireproof sheet 22 parts by weight of acrylic resin, 22 parts by weight of phosphorus flame retardant, 7 parts by weight of coating agent, 13 parts by weight of carbonizer, 9 parts by weight of flame retardant filler Was added to the mixture and stirred uniformly to produce a foamable refractory composition. A square mold with a length of 300 mm and a width of 300 mm is made with a masking tape with a thickness of 2 mm, and the above-mentioned foamed refractory composition is uniformly applied to the mold with a plastering iron. After drying, the masking tape was removed and the dried refractory sheet was taken out of the formwork to produce a refractory sheet having a length of 300 mm, a width of 300 mm, and a thickness of 2 mm.

(Production Example 2)
Fabrication of a laminated fire-resistant sheet having flexibility The foamable resin composition of Production Example 1 was formed into a square mold having a length of 300 mm and a width of 300 mm using a masking tape having a thickness of 1.95 mm. The fire-resistant composition was uniformly applied in a mold with a plastering iron and allowed to dry naturally at room temperature for about 2 days, and then a length of 300 mm and a width of 300 mm as a fiber sheet on the foamed fire-resistant composition sheet. Laminated refractory sheets having a length of 300 mm, a width of 300 mm, and a thickness of 2 mm were prepared by laminating and pressing a basalt fiber sheet having a thickness of 0.5 mm, removing the masking tape, and taking out the dried refractory sheet from the formwork.

(Comparative Example 1)
Preparation of a conventional fireproof sheet Diamond colored finish E quick drying (Daiflex Co., Ltd.) 41.67 parts by weight, phosphorus flame retardant 20.83 parts by weight, coating agent 7.29 parts by weight, carbonizing agent 8. 16.67 parts by weight of water was added to 33 parts by weight and 5.21 parts by weight of the flame retardant filler, and the mixture was stirred uniformly to prepare a foamable refractory composition. A square mold with a length of 300 mm and a width of 300 mm is made with a masking tape with a thickness of 2 mm, and the above-mentioned foamed refractory composition is uniformly applied to the mold with a plastering iron. After drying, the masking tape was removed and the dried refractory sheet was taken out of the formwork to produce a refractory sheet having a length of 300 mm, a width of 300 mm, and a thickness of 2 mm.

  In this Example 2, using the fireproof sheet and laminated fireproof sheet having flexibility according to the present invention of Production Example 1 and Production Example 2 produced in Example 1, and the conventional fireproof sheet of Comparative Example 1, respectively, Comparative experiments were conducted on the bending resistance, fire resistance, and foamability of the sheet. The results of the comparative experiment are shown in Table 1.

(experimental method)
Bending resistance The refractory sheets of Production Examples 1 and 2 and Comparative Example 1 were bent at a right angle, and the bending resistance was evaluated by visually observing the appearance of the bent portion. In Table 1, ◯ and × indicate the following evaluations, respectively.
○ ・ ・ ・ No problem × ・ ・ ・ Appearance abnormality such as cracking or peeling of sheet occurred

Refractory Production Examples 1 and 2 and Comparative Example 1 are attached to the corrugated board, and the surface of the refractory sheet is heated for 10 minutes with a cartridge-type gas burner (tip temperature of about 1300 ° C) and attached to the back of the refractory sheet. Fire resistance was evaluated based on whether the attached cardboard burned or not. In Table 1, ◯ and × indicate the following evaluations, respectively.
○ ・ ・ ・ No problem in fire resistance × ・ ・ ・ Cardboard burned.

The refractory sheets of Examples 1 and 2 and Comparative Example 1 of foaming production were pasted on corrugated board, and the refractory sheet was visually observed after heating the refractory sheet with a cartridge type gas burner (tip temperature of about 1300 ° C.) for 10 minutes. The foamability was evaluated by observing. In Table 1, ◯ and × indicate the following evaluations, respectively.
○ ... foamed and formed a carbonized layer × ... did not foam or did not form a carbonized layer

(result)
The results of the comparative experiment are as shown in Table 1 above. The fireproof sheets of Production Example 1 and Production Example 2 were not cracked or peeled even when the sheet was folded at a right angle. However, when the fireproof sheet of Comparative Example 1 was to be folded at a right angle, the sheet was cracked. Destroyed into multiple pieces. Moreover, there were no problems with respect to fire resistance and foaming in both Production Examples 1 and 2 and Comparative Example 1.

  In this Example 3, using the fire-resistant sheet and laminated fire-resistant sheet having flexibility according to the present invention of Production Example 1 and Production Example 2 produced in Example 1, and the conventional fire-resistant sheet of Comparative Example 1, respectively, The maximum elongation and tensile strength of the sheet were subjected to comparative experiments at different temperatures. Table 2 shows the results of the comparative experiment.

(experimental method)
Maximum Elongation By measuring the maximum elongation of Production Example 1 and Comparative Example 1, the flexibility of each refractory sheet was evaluated.
The maximum elongation is Autograph AG-100kNX (load cell 5 kN) manufactured by Shimadzu Corporation, test piece dimensions: 25 × 150 mm, distance between gripping tools: 50 mm, test speed: 100 mm / min, test temperature 23 ° C. (Room temperature) and 200 degreeC conditions. Further, the tensile strength was measured under the same conditions.

(result)
The results of the comparative experiment are as shown in Table 2 above. The fireproof sheet of Production Example 1 showed very high flexibility at room temperature (23 ° C.), and also showed high flexibility at a high temperature of 200 ° C. In addition, it is thought that the maximum elongation decreased at 200 ° C. because the refractory sheet was cured at a high temperature. Moreover, the laminated fireproof sheet of Production Example 2 exhibited very high tensile strength. The reason why the elongation of Production Example 2 is low is considered to be that the elongation of the basalt sheet itself is low because the elongation of the basalt sheet itself is low.

  In Example 4, a combustion test was performed using the laminated fireproof sheet (Fiber sheet: Basalt fiber sheet) of Production Example 2 produced in Example 1.

Combustion test Using the apparatus shown in FIG. 5 (a), as shown in FIG. 5 (b), a laminated fireproof sheet (Production Example 2) having a length of 300 mm, a width of 300 mm, and a thickness of 2 mm was manufactured by Glow Chemical Co., Ltd. Attached to the lower surface of 330mm long and 330mm wide aluminum plate using Terrific GC-110, blown flame for 1 hour with torch, heated aluminum plate (1ch, 2ch), non heated aluminum plate every 10 minutes The temperature of (3ch, 4ch) (see FIGS. 5B and 5C) was measured.

  The results are shown in FIG. The temperature inside the furnace exceeded about 660 ° C., which is the melting temperature of aluminum, after 10 minutes after the flame was blown by the torch, and exceeded 900 ° C. in one hour. On the other hand, the aluminum plate to which the laminated fireproof sheet of Production Example 2 was adhered did not melt, and the non-heated surface of the aluminum plate remained at about 340 ° C. after 1 hour from the start of the test.

Combustion test (Production Example 3)
Fabrication of a laminated fireproof sheet having flexibility A square mold having a length of 300 mm and a width of 300 mm is produced with a masking tape having a thickness of 1 mm, and a glass fiber sheet having a length of 300 mm and a width of 300 mm is placed in the mold. After that, the foamable refractory composition of Production Example 1 was uniformly applied in a mold with a plastering iron and allowed to air dry at room temperature for about 2 days. A laminated fireproof sheet having a length of 300 mm, a width of 300 mm, and a thickness of 1 mm was prepared by removing the masking tape and removing the dried laminated fireproof sheet from the mold.
Further, two laminated fireproof sheets having a thickness of 1 mm were laminated to produce a laminated fireproof sheet having a thickness of 2 mm.

(Test method)
The torch was changed to a propane gas burner, and the aluminum plate was changed to a steel plate, and the same method as in the combustion test of Example 4 was performed. That is, using the apparatus shown in FIG. 5 (a) and using a propane gas burner with a maximum temperature of 1400 ° C., as shown in FIG. 5 (b), a laminated fireproof sheet having a length of 300 mm, a width of 300 mm, a thickness of 1 mm and 2 mm. (Production Example 3) was attached to the lower surface of a steel plate having a length of 330 mm, a width of 330 mm, and a thickness of 2 mm using a telluric GC-110 manufactured by Glow Chemical Co., Ltd., and a flame was blown for 30 minutes with a propane gas burner, 30 minutes The temperature of the non-heated surface of the steel plate after the lapse was measured.

(result)
The results are as shown in Table 3 above.
After blowing the flame for 30 minutes with a propane gas burner, the temperature of the steel sheet non-heated surface at 5 locations was measured, and the temperature of the steel sheet non-heated surface of the laminated refractory sheet having a thickness of 1 mm was 100 ° C. to 150 ° C., The temperature of the steel sheet non-heated surface of the laminated fireproof sheet having a thickness of 2 mm was 50 ° C to 70 ° C.
After blowing a flame with a propane gas burner for 30 minutes, the temperature at five locations in the furnace was measured and found to be 800 ° C to 1000 ° C. In addition, when the state of the non-heating surface of the steel plate was observed, no melting, deformation, or the like was observed.
Moreover, after blowing a flame for 30 minutes with the propane gas burner, it was left to stand for 10 minutes. Then, when the thickness of the carbonized layer formed by foaming was measured, the thickness of the carbonized layer formed with the laminated fireproof sheets having a thickness of 1 mm and 2 mm was 10 mm.

Swellability test (Production Example 4)
Fabrication of a flexible laminated fireproof sheet A square mold having a length of 100 mm and a width of 39 mm is produced with a masking tape having a thickness of 1 mm, and a glass having a length of 100 mm, a width of 39 mm, and a thickness of 0.1 mm in the mold. After placing the fiber sheet, the foamable refractory composition of Production Example 1 was uniformly applied in a mold with a plastering iron and allowed to air dry at room temperature for about 2 days. The fire-resistant sheet which removed the masking tape and dried was taken out from the mold, and the laminated fire-resistant sheet of length 100mm, width 39mm, and thickness 1mm was produced.

(Test method)
The laminated fireproof sheet was immersed in tap water left at room temperature and left at room temperature for 6 months.

(result)
The results are as shown in Table 4 above. Six months after being immersed in water, the swelling ratio of the thickness of the laminated refractory sheet to water was 3%, and the swelling ratio of width to water was 0.77%. The reason why the swelling ratio of the width was lower than the swelling ratio of the thickness is considered that the swelling of the fireproof sheet itself is suppressed by the laminated glass fiber sheet.

  In addition, the present invention can be carried out in a mode in which various improvements, modifications, and changes are added based on the knowledge of those skilled in the art without departing from the spirit of the present invention.

  Since the fireproof sheet having flexibility and the laminated fireproof sheet having flexibility according to the present invention significantly improve the followability and flexibility to the adherend having a curved surface, the pillars and walls of nuclear power plants and general buildings Fire resistance to beams, doors, etc., vehicles such as airplanes, trains, cars, etc., structures such as ships, elevators and their components, or adherends such as pipes, electric wires, wiring devices, etc. It can be suitably used for application and can prevent the spread of fire due to fire.

1: Fireproof sheet having flexibility of the present invention 2: Laminated fireproof sheet having flexibility of the present invention 3: Fiber sheet 4: Release sheet 5: Foamable fireproof composition 6: Blade 7: Dryer 8: Roller

Claims (16)

A fireproof sheet comprising a foamable fireproof composition for having a front surface and a back surface, and affixing at least one surface to the adherend, and subjecting the adherend to fireproofing,
(A) an acrylic resin, and
(A) 50 to 200 parts by weight of phosphorus-based flame retardant, (C) 10 to 60 parts by weight of coating agent, and (D) 15 to 100 parts by weight of carbonizing agent with respect to 100 parts by weight of the acrylic resin (A). Part, (E) containing 15-60 parts by weight of a flame retardant filler,
A refractory sheet having flexibility, wherein the maximum elongation of the refractory sheet at room temperature is 200% or more. The flexible fireproof sheet according to claim 1, further comprising (F) water, wherein the (F) water is electrolyzed water. The (A) acrylic resin is an acrylic resin emulsion in which the (A) acrylic resin is dispersed in water, and the viscosity of the acrylic resin emulsion is 400 mPa · s to 1200 mPa · s. The fireproof sheet having flexibility according to claim 1. 4. The fireproof sheet having flexibility according to claim 3, wherein a glass transition temperature (Tg) of the acrylic resin emulsion is −50 ° C. to −30 ° C. 5. The fireproof sheet having flexibility according to any one of claims 1 to 4, wherein the maximum elongation of the fireproof sheet at 200 ° C is 50% or more. The refractory sheet according to any one of claims 1 to 5, wherein the refractory sheet has a swelling ratio with respect to water of not more than 10% after six months. The fireproof sheet according to any one of claims 1 to 6, wherein the fireproof sheet has a thickness of a carbonized layer formed by heating of 15 mm or less. The fireproof sheet having flexibility according to any one of claims 1 to 7, wherein when the fireproof sheet is bent at a right angle, the sheet is not cracked. The flexible fireproof sheet according to claim 1, wherein a release sheet is laminated on at least one of the front surface and the back surface, and the release sheet can be peeled and attached to the adherend. The fire-resistant sheet according to claim 1, wherein a fiber sheet is laminated on at least one of the front surface and the back surface. The fire-resistant sheet according to claim 1, wherein a fiber sheet is laminated on one of the front surface and the back surface, and a release sheet is laminated on the other surface. Fireproof sheet. The fireproof sheet according to claim 1, wherein a fiber sheet is laminated on one of the front surface and the back surface, and a release sheet is laminated on the fiber sheet. Laminated fireproof sheet. The fiber of the said fiber sheet has the softness | flexibility of any one of Claim 10 to 12 which is 1 type, or 2 or more types chosen from glass fiber, carbon fiber, aramid fiber, basalt fiber, or metal fiber. Laminated fireproof sheet. The laminated fireproof sheet having flexibility according to claim 10 or 11, wherein an acrylic resin is applied to a surface of the fiber sheet. Manufacture of a fire-resistant sheet comprising a foamable fire-resistant composition containing (A) an acrylic resin, (B) a phosphorus-based flame retardant, (C) a coating agent, (D) a carbonizing agent, and (E) a flame-retardant filler. A method,
(B) Phosphoric flame retardant (50) to 200 parts by weight, (C) 10 to 60 parts by weight of coating agent, based on (A) acrylic resin and 100 parts by weight of (A) acrylic resin, D) mixing 15 to 100 parts by weight of carbonizing agent and (E) 15 to 60 parts by weight of flame retardant filler to prepare a foamable refractory composition;
Preparing a release sheet;
Applying the foamable refractory composition on the release sheet;
Uniformizing the thickness of the foamable refractory composition applied on the release sheet, and forming a laminate sheet of the release sheet and the foamable refractory composition;
Drying the laminated sheet;
A method for producing a flexible fireproof sheet. Laminated fire-resistant sheet comprising a foamable fire-resistant composition containing (A) acrylic resin, (B) phosphorus-based flame retardant, (C) coating agent, (D) carbonizing agent, and (E) flame-retardant filler A manufacturing method of
(B) Phosphoric flame retardant (50) to 200 parts by weight, (C) 10 to 60 parts by weight of coating agent, based on (A) acrylic resin and 100 parts by weight of (A) acrylic resin, D) mixing 15 to 100 parts by weight of carbonizing agent and (E) 15 to 60 parts by weight of flame retardant filler to prepare a foamable refractory composition;
Preparing a release sheet and a fiber sheet;
Applying the foamable refractory composition on the release sheet;
Uniformizing the thickness of the foamable refractory composition applied on the release sheet, and forming a laminate sheet of the release sheet and the foamable refractory composition;
A drying step of drying the molded laminated sheet;
Laminating the fiber sheet on the dried laminated sheet, and crimping the laminated sheet and the fiber sheet;
A method for producing a flexible laminated refractory sheet, comprising:

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