JPH08302852A - Material for fireproof sheet, fireproof sheet and fireproof coating method using the same - Google Patents

Abstract

(57) [Abstract] [Purpose] A main object is to provide a material for a fire-resistant sheet capable of uniformly imparting excellent fire resistance, heat insulation and the like, a fire-resistant sheet and a fire-resistant coating method using the same. [Structure] A fireproof sheet obtained by melting and molding a fireproof sheet material containing a petroleum resin, a fireproofing powder and a toughening agent, and a fireproof coating method using the same.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fireproof sheet material, a fireproof sheet and a fireproof coating method using the same.

[0002]

2. Description of the Related Art Conventionally, it is legally obligatory to apply a fireproof coating to a steel-framed building civil engineering structure. This is done especially to prevent the collapse of the structure due to the significant decrease in strength of the steel frame due to the temperature rise in the event of a fire or the like. As such a fireproof coating material, rock wool, cement, various inorganic fillers and the like are used. These are sprayed on the steel surface,
A large amount is required for thickening by tens of millimeters by trowel coating, etc., and an increase in weight is inevitable. In addition, the appearance is often impaired due to the weight feeling due to thickening and the unique hue of rock wool, cement and the like.

Recently, foamed fire-resistant paints, which can be colored like ordinary paints and can be applied relatively thinly with a film thickness of about several millimeters, have been partially used. This paint is capable of imparting heat insulating properties, fire resistance, etc. to an object to be coated by foaming and carbonizing the coating film due to a rise in temperature during a fire. This paint has long been used as a fireproof coating material in Europe and the United States, and is also used in Japan for the purpose of preventing the spread of electric wires and the ignition of fuel tanks.

[0004] However, since the construction of the foamed fire-resistant paint is a work at the construction site of the steel frame structure, there is a possibility that the surrounding environment may be contaminated, and the foamed fire-resistant paint is uniformly applied to the object to be coated such as the steel frame. It is extremely difficult to provide fire resistance. That is, even if a fixed amount of coating is set in advance, unevenness of the amount of coating is unavoidable, and a portion with a large coating amount and a portion with a small coating amount occur. Since the fire resistance performance depends largely on the thickness of the carbonized layer to be formed, the carbonized layer having a predetermined thickness is not formed in the portion where the coating amount is small, and the fire resistance performance is partially deteriorated. In this case, it is conceivable to reapply to a portion having a small coating amount after the construction, but it is practically impossible to measure all the coating amount of the already constructed steel frame.

On the other hand, there is also a dry method in which the foamed fire-resistant paint is formed into a dry sheet or tape in advance and the obtained sheet or tape is attached to an object to be coated.

However, in view of the properties of these paints, in order to give the desired fire resistance performance, the thickness is about 0.
It is necessary to make a thick film sheet of 5 to several mm. In this case, since the foamed refractory paint generally has a low solid content, if a thick film sheet is to be produced, not only the drying time becomes long, but also the shrinkage of the coating film occurs during drying,
The dry coating film may crack. On the other hand, if the drying temperature is raised to forcibly accelerate the drying, bubbles will be generated inside the coating film. Further, if the amount of the solvent used is reduced to increase the solid content ratio, the viscosity inevitably increases and it becomes impossible to uniformly mix the powder component having fire resistance.

Further, these foamed refractory paints contain a certain amount of a solvent as an essential component, and when a sheet is to be made from this paint, once a sheet having a certain film thickness is applied, the solvent is dried. Need to be volatilized. That is, since the solvent is generally flammable or explosive, the volatilized solvent may cause an explosion or the like. For this reason, explosion-proof devices, odor removal devices, or recent VOCs
Due to regulations, a solvent recovery device and the like are required, and extremely large-scale equipment is required.

In this regard, a flat or non-planar object to be coated
(A) a compound containing phosphorus and / or sulfur, a synthetic resin,
Phosphorus-containing / nitrogen-foaming fire-resistant coating material composed of an organic foaming agent and an inorganic compound other than the above-mentioned compound, and (B) a fire-resistant material formed by laminating chopped strands of glass fiber and a method for producing the same are known. (JP-A-5-220879). With this material, it is possible to improve the above-mentioned problems in drying the coating film.

However, even in this material, since the solvent is contained as an essential component in the same manner as the foamed fire-resistant paint, the above problems in the solvent still remain and there is still room for improvement.

A method has also been proposed in which a solvent-free thermoplastic resin is used for these paint systems, the mixture is heated and melted with a powder component having fire resistance, mixed, and molded into a sheet while cooling. . However, since the melting temperature is high, the powder components are decomposed and reacted in the sheet processing step. On the other hand, when the temperature is lowered, the viscosity of the resin does not decrease, so that the blending amount of the powder component is limited, and as a result, desired fire resistance cannot be obtained.

On the other hand, the above-mentioned JP-A-5-220879 discloses a method of kneading plastisol with each component by a heating roll to form a sheet.
However, plastisol usually contains 50 parts by weight or more of a plasticizer with respect to 100 parts by weight of the resin, and by blending such a large amount of plasticizer, oozing out of the plasticizer occurs and discoloration occurs. Problems such as deterioration of the appearance due to the occurrence of stains and stains and hardening of the sheet over time are caused. On the other hand, if the compounding amount of the plasticizer is reduced, the fluidity of the sol is drastically reduced, and it becomes difficult to knead the other components with a heating roll.

[0012]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a material for a fireproof sheet which can uniformly impart excellent fireproofness, heat insulation, etc., a fireproof sheet and a fireproof coating method using the same. The main purpose is.

[0013]

The inventors of the present invention have conducted extensive studies in view of the above-mentioned problems of the prior art, and as a result, when a specific resin and a powder component were used in combination, the object to be coated was excellent. The inventors have found that a sheet capable of uniformly imparting fire resistance, heat insulation, etc. can be obtained, and completed the present invention.

That is, according to the present invention, a fireproof sheet material containing a petroleum resin, a fireproofing powder and a toughening agent is melted,
The present invention relates to a fireproof sheet obtained by molding.

The present invention will be described in detail below.

The fire resistant sheet of the present invention is obtained by melting and molding a fire resistant sheet material containing a petroleum resin, a fire resistance imparting powder and a toughness imparting agent as described above.

As the petroleum resin which is a component of the material for the refractory sheet, known petroleum resins can be used as they are. For example, C among the decomposition fractions produced as a by-product from an ethylene plant for producing ethylene, propylene and the like by steam cracking of petroleum. Aliphatic (C ₅ ) petroleum resin using ₅ fractions as a raw material,
Aromatic (C ₉ ) petroleum resin using C ₉ fraction as a raw material, and aliphatic / aromatic copolymerization system (C ₅ C ₉ ) using both as raw materials
Examples thereof include petroleum resins, alicyclic (DCPD) petroleum resins made of high-purity dicyclopentadiene as raw materials, synthetic polyterpenes, and hydrogenated products thereof. These petroleum resins may be used alone or in combination of two or more. Among these petroleum resins, hydrogenated resins having no unsaturated bonds or less unsaturated bonds are preferable from the viewpoints of excellent weather resistance and being colorless.

Since these petroleum resins are usually solid pellets, in that case, they may be melted at the time of use to be in a fluid state. Generally, the softening temperature of the petroleum resin does not need to exceed 170 ° C., but may be any temperature as long as it is equal to or lower than the reaction temperature of the fire resistance-imparting powder. For example, the reaction temperature of the fireproofing powder is 200 ° C.
If so, petroleum resin having a softening temperature of 200 ° C. or lower may be used. It should be noted that the lower limit of the softening temperature is usually preferably about 70 ° C., because the temperature is expected to rise due to sunlight or the like depending on the use part of the refractory sheet.

The melt viscosity of the petroleum resin is not particularly limited as long as it can be mixed with the fire resistance-imparting powder. However, since the molecular weight of petroleum resin is generally about one thousand and several hundred, most of the petroleum resin can be uniformly mixed with the fire resistance-imparting powder.
In order to increase the foaming ratio of the refractory sheet and further improve the fire resistance, it is necessary to be able to mix a large amount of the fire resistance-imparting powder. Therefore, it is desirable that the melt viscosity at 200 ° C. is usually about 0.03 to 5 Pa · S.

In the present invention, the refractory-imparting powder means a powder which reacts with other components such as petroleum resin as the temperature rises to form a carbonized heat-insulating layer and exhibits a heat-insulating effect, a fire-extinguishing effect, etc. Specifically, it is composed mainly of a flame retardant, a foaming agent, a carbonized layer forming agent and a filler. The flame retardant mainly prevents the combustion of petroleum resin or the like due to a temperature rise by its dehydration cooling action, nonflammable gas generation action, binder carbonization promotion action, and the like. By blending these flame retardants, it is possible to suppress or prevent the combustion of the molten petroleum resin, and to form a carbonized heat insulating layer having good heat insulating properties.

Specifically, tricresyl phosphate,
Diphenyl cresyl phosphate, diphenyl octyl phosphate, tri (β-chloroethyl) phosphate, tributyl phosphate, tri (dichloropropyl) phosphate, triphenyl phosphate, tri (dibromopropyl) phosphate, chlorophosphonate, bromophosphonate, diethyl-N, N- Screw (2
-Hydroxyethyl) aminomethyl phosphate, organic phosphorus compounds such as di (polyoxyethylene) hydroxymethylphosphonate, chlorinated paraffin, chlorinated polyphenyl, diphenyl chloride, triphenyl chloride, pentachlorofatty acid ester, perchloropentacyclodecane Chlorinated naphthalenes, chlorine compounds such as tetrachlorophthalic anhydride, antimony trioxide, antimony compounds such as antimony pentachloride, phosphorus trichloride, phosphorus pentachloride, ammonium phosphate, phosphorus compounds such as ammonium polyphosphate, zinc borate, Examples thereof include boric acid compounds such as sodium borate. These flame retardants may be used alone or in combination of two or more. Among these, in particular, since it has both a dehydration cooling action and a nonflammable gas generating action, it is excellent in flame retardancy, and there is also an advantage that the compounding amount of the foaming agent described below can be reduced.
Preference is given to using ammonium polyphosphate.

The foaming agent is used to foam a carbonized layer formed of a petroleum resin, a carbonized layer forming agent, etc., mainly by the generation of an incombustible gas to form a carbonized heat insulating layer having a foam structure. That is, by blending the foaming agent, pores can be introduced into the carbonized layer, and the heat insulating property can be further improved.

Specific examples thereof include melamine and its derivatives, dicyandiamide and its derivatives, azodicarbonamide, urea and thiourea. These foaming agents may be used alone or in combination of two or more. Among these, it is particularly preferable to use melamine, dicyandiamide, azodicarbonamide, etc., which are excellent in the generation efficiency of nonflammable gas.

The carbonized layer forming agent forms a carbonized heat insulating layer by carbonization of petroleum resin and dehydration carbonization. By blending the carbonized layer-forming agent, it becomes possible to promote the carbonization of the petroleum resin while mainly preventing the combustion decomposition of the petroleum resin and the like.

Specific examples thereof include polyhydric alcohols such as starch, casein, pentaerythritol, dipentaerythritol and trimethylolpropane. These carbonized layer forming agents may be used alone or in combination of two or more. Among these, it is particularly preferable to use dipentaerythritol because of its excellent dehydration cooling action and ability to form a carbonized heat insulating layer.

The filler mainly contributes to impart strength to the carbonized heat insulating layer and improve fire resistance. By blending the filler, it is possible to prevent the carbonized heat insulating layer from peeling off due to embrittlement of the carbonized layer.

Specifically, silicates such as talc, carbonates such as calcium carbonate and sodium carbonate, oxides such as aluminum oxide, titanium dioxide and zinc oxide, and clayey materials such as clay, clay, shirasu and mica. And one or more of these can be used. Among these, it is preferable to use titanium dioxide or the like.

The toughness-imparting agent has a role of improving the energy required for breaking the coating film. Specifically, phthalate compounds such as di-2-ethylhexyl phthalate, diisononyl phthalate and dibutyl phthalate, trimellitic acid such as tri-n-trioctyl trimellitate, dipentaerythritol ester and mixed alcohol trimellitate. Ester compounds,
Fatty acid ester-based compounds such as butyl oleate, epoxidized soybean oil, epoxidized linseed oil, epoxy-based compounds such as epoxidized fatty acid alkyl esters, isobutyl adipate, adipic acid ester-based compounds such as di-2-ethylhexa adipate, Phosphate ester compounds such as tricresyl phosphate, tri-2-ethylhexyl phosphate, triphenyl phosphate, 2-ethylhexyl diphenyl phosphate, cresyl diphenyl phosphate, mineral oils such as aroma process oil and naphthene process oil, chlorination Examples thereof include chlorinated compounds such as paraffin and chlorinated aliphatic esters, polymer oils such as polybutene and polybutadiene, and resins such as alkyd resins and xylene resins. These toughness-imparting agents may be used alone or in combination of two or more. Among these, it is particularly preferable to use ester compounds such as phthalic acid ester compounds, trimellitic acid ester compounds, adipic acid ester compounds, and phosphoric acid ester compounds.

The blending ratio of each component in the material for a fireproof sheet of the present invention is not particularly limited as long as a carbonized heat insulating layer is formed by a temperature rise due to a fire or the like and predetermined heat insulating properties, fire resistance and the like are exhibited. Further, it can be appropriately set depending on the type of components used, desired characteristics, intended use, site of use, and the like. Usually, about 50 to 600 parts by weight of fireproofing powder, preferably 150 to 6 parts by weight with respect to 100 parts by weight of petroleum resin.
00 parts by weight and a toughness imparting agent of about 5 to 150 parts by weight, preferably 15 to 100 parts by weight.

The blending ratio of each component in the fire resistance-imparting powder can be appropriately changed depending on the kind of the component used and the like, but usually about 30 to 85% by weight of the flame retardant, about 4 to 35% by weight of the foaming agent, and carbonized layer formation Agent 4 to 35% by weight, filler 5
About 40% by weight, more preferably about 40 to 70% by weight of flame retardant, about 8 to 25% by weight of foaming agent, and 8 to 25 of carbonized layer forming agent.
The content is about 5% by weight and the filler is about 5 to 30% by weight.

In the material for a fireproof sheet of the present invention, various known additives may be blended in addition to the above-mentioned components within a range that does not impair the effects of the present invention. For example, in order to adjust the physical properties of the sheet, an organic or inorganic fibrous material such as glass fiber, silica-alumina fiber, polyester fiber, vinyl fiber or the like having a size of about 3 to 10 mm, or middle glass,
Blending of glass flakes, etc. is possible. Further, it is also possible to blend a coloring pigment which is usually used for coloring the sheet, or a coloring aggregate obtained by applying coloring coating to silica sand, cold water stone, calcium carbonate particles, mica, metal foil and the like. Further, a liquid flame retardant may be added to further enhance the flame retardancy of the sheet.

The material for a refractory sheet of the present invention is obtained by blending each of these materials. The procedure of compounding is not particularly limited. For example, the pellets of petroleum resin are first melted in a heating tank, and then the toughness-imparting agent and the fire resistance-imparting powder are added and mixed uniformly, or the pre-melted petroleum resin, toughness-imparting agent and fire resistance-imparting agent are added. A method in which the powder is put into a tank and uniformly mixed, a method in which these raw materials are put into a heating type kneader and kneaded, and the like are possible.
In the present invention, the refractory sheet material includes materials in all states from melt to solid.

The refractory sheet material of the present invention is made into the refractory sheet of the present invention by processing the material in a molten state into a sheet shape. The method for forming the sheet is not particularly limited, and a known sheet forming method can be used. For example, the sheet is extruded using a die whose thickness is set beforehand, or the gap is adjusted to a desired sheet thickness. A sheet can be formed by roll-extruding with a roller. The formed fireproof sheet material is cured as the temperature decreases, and finally becomes the fireproof sheet of the present invention at about room temperature. The thickness of the fire-resistant sheet of the present invention may be appropriately determined depending on the use site, application, etc., but is usually about 0.2 to 3 mm.

In the fire-resistant sheet of the present invention, by further providing a protective layer, it is possible to effectively prevent alteration of each component during normal times. As the protective layer, a known material such as an exterior paint having excellent weather resistance and a waterproof sheet laminate can be used. It is also possible to use the protective layer for the purpose of coloring the fireproof sheet by incorporating a coloring pigment, a colored aggregate or the like into the protective layer.

The fire-resistant sheet of the present invention is coated by adhering it to a base material to which fire resistance is to be imparted with an adhesive or a pressure-sensitive adhesive. As the adhesive or pressure-sensitive adhesive, known materials used for adhesion of building materials and the like can be used as they are, for example, rubber-based, acrylic-based, vinyl-based, vinyl acetate-based, ethylene-vinyl acetate-based, epoxy-based, etc. Can be used.

In this case, in the joint portion between the refractory sheets, the respective refractory sheets are superposed and thermocompression-bonded, or the refractory sheets are butted without being superposed, and the refractory sheets are separately cut into narrow seams. It is possible to form a seamless fireproof sheet layer by stacking fireproof sheets obtained by abutting the fireproof sheets at seams and thermocompressing them or subjecting them to a seam treatment using a fireproof putty. As the refractory putty material, known materials can be used, for example, those containing various fillers using water glass as a binder as an inorganic material, polysulfide-based, silicone-based, urethane-based as an organic material. Water-based acrylic, water-based SBR
Examples thereof include those containing a flame retardant in a putty material such as a butyl-based putty material, a softening material for the fire-resistant sheet of the present invention, and a fire-resistant coating material that has been conventionally used. By the coating treatment as described above, in particular, it is possible to more effectively prevent the refractory sheet from peeling off with time or cracking of the carbonized heat insulating layer when a fire occurs.

In addition to the method of imparting fire resistance by sticking only the refractory sheet as the base material as described above, another sheet-like material preliminarily laminated on the refractory sheet is stuck to the base material. You may. The shape of the sheet may be a single leaf sheet or may be a long tape cut and wound. It is also possible to directly press-bond the fireproof sheet by hot pressing without using an adhesive.

[0038]

The action of the fire-resistant sheet of the present invention mainly proceeds by the following mechanism.

When the temperature rises at the time of fire, the flame retardant in the fireproofing powder is decomposed, and the temperature rise of the article to be coated is delayed by the dehydration and cooling action, and the digestive action due to the generation of incombustible gas. Exert. Further, a carbonized layer is formed by a composite reaction between the petroleum resin and the carbonized layer forming agent in the fireproofing powder. On the other hand, the foaming agent decomposes and the carbonized layer becomes a foam structure containing a large number of bubbles. At this time,
The incombustible gas also contributes to the foam structure in a complex manner.
The carbonized heat insulating layer is formed in this manner, but since the filler is dispersed in the skeleton of the carbonized heat insulating layer, the carbonized heat insulating layer is retained on the surface of the coated object without peeling off. The formed carbonized heat insulating layer exhibits heat insulating properties due to its foam structure and can subsequently delay the temperature rise of the article to be coated.

In particular, in the present invention, by using the petroleum resin, it becomes possible to uniformly mix the fire resistance-imparting powder and the toughness-imparting agent, and a fire-resistant sheet having excellent homogeneity can be obtained.
Further, the synergistic action of the petroleum resin and the fire resistance imparting powder can promote the carbonization, and can form the carbonized heat insulating layer capable of exhibiting the excellent heat insulating property.

[0041]

According to the fireproof sheet of the present invention, the following remarkable effects can be obtained.

(1) The thickness of the fireproof sheet at the time of manufacture becomes the thickness of the coating film as it is, and the control and management of the thickness of the coating film can be carried out easily and surely as compared with the conventional fireproof paint.
Therefore, a uniform layer can be formed, and excellent heat insulation and fire resistance can be imparted to the article to be coated. Also,
Because of the sheet, the problem of environmental pollution can be solved. (2) In order to make a conventional solvent-based or water-based foamed refractory paint into a sheet, its solid content ratio is low and its viscosity is also low, so that the film thickness is sufficient to exert the required fire resistance. While it is difficult to form a sheet, since the refractory sheet of the present invention is solvent-free and has a low viscosity when melted, it is easy to extrude or heat roll-form and produce a sheet having a large film thickness at one time. It is also possible. (3) By adjusting the blending ratio of the petroleum resin and the toughness-imparting agent, it is possible to obtain various states from a flexible fire resistant sheet to a hard fire resistant sheet. In particular, when it has flexibility, it can be used by winding or bending, so that it can be easily attached to a base material having a complicated shape. (4) When a fireproof sheet is attached to impart fire resistance to the base material, the fireproof sheets are treated by superimposing the fireproof sheets on top of each other and then heating the petroleum resin for thermocompression bonding. By doing so, each fireproof sheet can be integrated,
Not only the workability and the appearance after the work are excellent, but it is possible to more effectively prevent the refractory sheet from peeling off with time or cracks in the carbonized heat insulating layer when a fire occurs.

[0043]

EXAMPLES Hereinafter, examples and comparative examples will be shown to clarify the features of the present invention.

Example 1 Using each material shown in Table 1, a refractory sheet was produced with the compounding ratio shown in Table 2. First, the temperature-controllable silicone oil bath is set to 160 ° C., the petroleum resin is charged into the cylindrical container to soften and melt, and then the toughness-imparting agent and the fire resistance-imparting powder are charged, mixed, and fire-resistant. The sheet material was prepared as a paste. This paste was passed together with the release sheet while rolling between two rolls whose gap width was adjusted to 2 mm, and then the release sheet was peeled off. The refractory sheet (thickness 2 mm) thus obtained is
It was attached to a cm × 30 cm × 0.18 cm iron plate with an acrylic adhesive and used as a test body for a heating test.

The test body was placed on a ceramic board, and the test body was heated together with the ceramic board for 60 minutes based on a standard temperature heating curve specified in JIS A 1304 Fireproof Test Method for Building Structures. Immediately after the heating, the test body was taken out together with the ceramic board, and the thickness of the foamed carbonized layer was measured. At this time, the expansion ratio from the initial thickness of 2 mm of the fireproof sheet was calculated. as a result,
The expansion ratio was 31.6 times.

Examples 2 to 10 A refractory sheet (having the same thickness as in Example 1) was produced in the same manner as in Example 1 except that the materials shown in Table 1 were used and the compounding ratios shown in Table 2 were used. . Further, the obtained fireproof sheet was subjected to the same test as in Example 1 to obtain the expansion ratio. The results are shown in Table 2.

[0047]

[Table 1]

[0048]

[Table 2]

Comparative Example 1 A refractory sheet was produced in the same manner as in Example 1 except that the materials shown in Table 1 were used and the compounding ratios shown in Table 3 were used, but the temperature of the silicone oil bath was 160 ° C. Did not melt so that the refractory powder could be mixed.

Therefore, the temperature of the silicone oil bath is set to 230 ° C.
However, the toughness-imparting agent and the fireproofing-imparting powder were blended, but the refractory-imparting powder reacted immediately after the addition, and the refractory sheet could not be obtained.

Comparative Examples 2 and 3 A refractory sheet was produced in the same manner as in Example 1 except that the materials shown in Table 1 were used and the compounding ratios shown in Table 3 were used. At 160 ° C, the refractory powder was not melted enough to be mixed.

Therefore, the temperature of the silicone oil bath is set to 190 ° C.
Although the toughness-imparting agent and the fireproofing-imparting powder were blended in the above, the refractory-imparting powder was compared with Comparative Example 2 because of its high melt viscosity.
In Comparative Example 3, only 30 parts by weight could be compounded. The same test as in Example 1 was carried out using the sheet (thickness is the same as in Example 1) obtained from the paste for producing a refractory sheet thus obtained. As a result, Comparative Example 2 is 2.2 times, Comparative Example 3 is 3.8 times, which is extremely small compared to the Examples, and it can be seen that a sufficient fire resistance effect cannot be expected.

[0053]

[Table 3]

Comparative Example 4 80 parts by weight of melamine, 100 parts by weight of pentaerythritol, 400 parts by weight of ammonium polyphosphate, and 120 parts by weight of titanium dioxide were added to a fire resistance-imparting powder as 100 parts by weight of acrylic copolymer resin as solid content. , Toluene 10
A refractory paint was manufactured by mixing and dispersing it in 0 parts by weight. When it is attempted to form a coating film having a dry film thickness of 2 mm using this refractory paint, a coating amount of 4 kg per 1 m ² is required, and it is difficult to perform spray coating once. It was For this reason, when it was manufactured by pouring into a mold, it took 12 hours to dry at room temperature, and cracks were generated on the surface of the coating film after drying.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Reference number within the agency FI Technical display location // B29K 55:00 (72) Inventor Hideo Motoki 1-25-10 Shimizu, Ibaraki-shi, Osaka SK Kaken Co., Ltd. Research Institute (72) Inventor Tomio Ouchi 2-1-1, Tobita-cho, Chofu-shi, Tokyo Kashima Construction Co., Ltd. Technical Research Institute (72) Inventor Keiichi Miyamoto 2--19, Tobita-cho, Chofu-shi, Tokyo No. 1 Kashima Construction Co., Ltd. Technical Research Center

Claims (17)

[Claims] 1. A material for a fire resistant sheet, characterized by containing a petroleum resin, a fire resistance imparting powder and a toughness imparting agent. 2. A material for a fire resistant sheet according to claim 1, wherein the fire resistance imparting powder contains a flame retardant, a carbonized layer forming agent, a filler and a foaming agent. 3. The material for a fire resistant sheet according to claim 2, wherein the flame retardant is at least one of an organic phosphorus compound, a chlorine compound, an antimony compound, a phosphorus compound and a boric acid compound. 4. The flame retardant is tricresyl phosphate, diphenyl cresyl phosphate, diphenyl octyl phosphate, tri (β-chloroethyl) phosphate,
Tributyl phosphate, tri (dichloropropyl) phosphate, triphenyl phosphate, tri (dibromopropyl) phosphate, chlorophosphonate, bromophosphonate, diethyl-N, N-bis (2-hydroxyethyl) aminomethyl phosphate, di (polyoxyethylene) Hydroxymethylphosphonate, chlorinated paraffin, chlorinated polyphenyl, diphenyl chloride, triphenyl chloride, fatty acid pentachloride, perchloropentacyclodecane, chlorinated naphthalene, tetrachlorophthalic anhydride, antimony trioxide, antimony pentachloride, trichloride The fireproof sheet material according to claim 2, which is at least one of phosphorus, phosphorus pentachloride, ammonium phosphate, ammonium polyphosphate, zinc borate, and sodium borate. 5. The material for a fire resistant sheet according to claim 2, wherein the carbonized layer forming agent is at least one of starch, casein, pentaerythritol, dipentaerythritol and trimethylolpropane. 6. The material for a fire resistant sheet according to claim 2, wherein the filler is at least one selected from talc, calcium carbonate, sodium carbonate, aluminum oxide, titanium dioxide, zinc oxide, clay, clay, shirasu and mica. 7. A foaming agent comprising melamine and its derivatives, dicyandiamide and its derivatives, azodicarbonamide,
The refractory sheet material according to claim 2, which is at least one of urea and thiourea. 8. The material for a fire resistant sheet according to claim 2, wherein the flame retardant is ammonium polyphosphate, the carbonized layer forming agent is dipentaerythritol, the filler is titanium dioxide, and the foaming agent is melamine. 9. A toughness-imparting agent is a phthalic acid ester compound, a trimellitic acid ester compound, a fatty acid ester compound, an epoxy compound, an adipic acid ester compound, a phosphoric acid ester compound, a mineral oil, a chlorinated compound and The fireproof sheet material according to claim 2, which is at least one kind of resin. 10. A toughening agent is di-2-ethylhexyl phthalate, diisononyl phthalate, dibutyl phthalate, tri-n-trioctyl trimellitate, dipentaerythritol ester, mixed alcohol trimellitate, butyl oleate, epoxidation. Soybean oil, epoxidized linseed oil, epoxidized fatty acid alkyl ester, isobutyl adipate, di-2-ethylhexadipate,
Tricresyl phosphate, tri-2-ethylhexyl phosphate, triphenyl phosphate, 2-ethylhexyl diphenyl phosphate, cresyl diphenyl phosphate, aroma process oil, naphthene process oil, chlorinated paraffin, chlorinated aliphatic ester, polybutene, polybutadiene The material for a fire-resistant sheet according to claim 2, which is at least one of an alkyd resin and an xylene resin. 11. A petroleum resin having a softening point not exceeding 170 ° C. and a melt viscosity of 0.0 at 200 ° C.
The fire-resistant sheet material according to claim 1, which has a pressure of 3 to 5 Pa · S. 12. A fire resistance imparting powder of 50 to 600 parts by weight and a toughness imparting agent of 5 to 150 relative to 100 parts by weight of a petroleum resin.
The material for a fire-resistant sheet according to claim 1, which is mixed in an amount of part by weight. 13. A flame-retardant powder comprising a flame retardant 30 to 30.
85% by weight, carbonized layer forming agent 4-35% by weight, filler 5
The refractory sheet material according to claim 12, wherein 40 wt% and a foaming agent of 4 to 35 wt% are blended. 14. A refractory sheet obtained by melting and molding the material for a refractory sheet according to any one of claims 1 to 13. 15. When the fire-resistant sheet according to claim 14 is attached to a base material, a part of each fire-resistant sheet is overlapped at a joint between the fire-resistant sheets, and the overlapped part is thermocompression bonded. And fireproof coating method. 16. A fire-resistant sheet for seam treatment, which is obtained by separately cutting the fire-resistant sheet into narrow widths at the joint portion between the fire-resistant sheets when the fire-resistant sheet according to claim 14 is attached to a base material. A fire-resistant coating method comprising laminating each of the sheets and thermocompression-bonding the superposed portions. 17. A fire resistant coating method, characterized in that, when the fire resistant sheet according to claim 14 is attached to a base material, a seam treatment is performed with a fire resistant putty-like material at a joint portion between the fire resistant sheets.