KR20230086581A - Frp material with reinforced non-combustibility - Google Patents

Abstract

The present invention relates to an FRP material reinforced with incombustibility that is improved to last a long time without burning.
In the present invention, a non-retardant coating layer coated with a non-retardant agent is formed on the surface of a flame-retardant FRP base material containing a flame-retardant resin, and the composition of the non-retardant coating layer is 1,3,5-triazine-2,4,6-triamine 10 ~20wt%, ammonium polyphosphate 30~50wt%, dimethylpolysiloxane 1~10wt%, xylene 10~20wt%, phosphonic acid, P-methyl-,(5-ethyl-2-methyl-2-oxido -1,3,2-dioxaphosphorinan-5-yl) provides an incombustible reinforced FRP material containing 10 to 30 wt% of methyl methyl ester.

Description

FRP material with reinforced incombustibility {FRP MATERIAL WITH REINFORCED NON-COMBUSTIBILITY}

The present invention relates to an FRP material reinforced with incombustibility, and more particularly, to an FRP material reinforced with incombustibility that is improved to last long without burning.

In general, glass fiber reinforced plastic (FRP; Fiberglass Reinforced Plastic, hereinafter referred to as FRP) uses resin with excellent water resistance, chemical resistance and heat resistance, and uses glass fiber with excellent tensile strength as a composite material, It has excellent corrosion resistance, heat resistance, high durability and light weight, and has excellent adhesiveness, so it is easy to mix with other materials.

FRP with such characteristics is made into a pipe and used as a transport passage for transporting highly corrosive gas, wastewater, and sewage, or made into a tank and used as a reaction tank in a chemical plant and a process in a semiconductor plant. It is used as a chemical tank, raw material storage container in food factories, and corrosion-resistant chemical storage container.

In addition, FRP is made of a lining material and is lined on the inner wall of a wall, such as a concrete water tank, so that the airtightness and watertightness of the concrete water tank can be maintained.

In addition, the FRP may reinforce the structure by attaching it to the outside of the structure using epoxy or by forming grooves and bonding.

However, the FRP structure reinforcement method has problems in that it is easy to lose fixing power to the FRP due to damage or damage in the environment of epoxy slip, external impact, and high temperature (approximately 102 ° C, which is the glass transition temperature of the epoxy-based FRP resin). had a very weak problem.

As above, as prior literature related to the reinforcement method using FRP, Registration Patent No. 10-1618252 (registered on April 28, 2016) discloses a fiber-reinforced plastic (FRP) reinforcement device and a reinforcement method of a structure using the same. has been

The fiber-reinforced plastic (FRP) reinforcement device of the above registered patent includes an FRP core in which a plurality of fiber bundles in the form of a roving are arranged and impregnated with a resin to have a bar shape, and perpendicular to the FRP core An anchor mount formed by arranging a plurality of fiber bundles in the form of roving and impregnating with resin, and an anchor installed to surround the outer surface of the anchor mount and inserted into a hole (H) formed in a structure to be reinforced and fixed includes

The fiber-reinforced plastic (FRP) reinforcement device of the registered patent having the above configuration prevents local destruction of the spray-type fiber-reinforced coating layer due to stress concentration and prevents end peeling by covering the spray-type fiber-reinforced coating layer with the FRP core. In addition, by spraying the second fiber-reinforced coating layer on the outer surface of the FRP core, the first fiber-reinforced coating layer and the FRP core are more firmly fixed to the surface of the structure, and end peeling can be prevented, further improving the reinforcement performance. .

However, the fiber-reinforced plastic (FRP) reinforcing device of the above registered patent has a problem of being vulnerable to fire.

That is, in the case of the above registered patent, although the FRP is structurally reinforced, there is a problem in that it is vulnerable in case of fire.

In other words, the existing FRP materials were lightweight, strong and durable, but were vulnerable to fire or fire due to poor incombustibility.

Accordingly, the conventional FRP material is difficult to use as a non-combustible material due to poor incombustibility, and cannot be used for coal-fired power plant equipment, electronic company equipment, chemical plant company equipment, etc., which are exposed to a lot of corrosion and fire, and the usability is poor.

That is, in preparation for the occurrence of fire, the above companies, which are exposed to a lot of corrosion and fire, have no choice but to use metal materials that are resistant to fire, but are heavy, expensive, and vulnerable to corrosion.

The present invention was created to solve the above problems, and an object of the present invention is to provide an FRP material reinforced with incombustibility that can be used for various purposes by replacing metal materials by reinforcing incombustibility.

The incombustible reinforced FRP material of the present invention for achieving the above object,

A flame retardant coating layer coated with a flame retardant is formed on the surface of the flame retardant FRP base material containing the flame retardant resin,

The composition of the non-flammable coating layer is 1,3,5-triazine-2,4,6-triamine 10 ~ 20wt%, ammonium polyphosphate 30 ~ 50wt%, dimethylpolysiloxane 1 ~ 10wt%, xylene 10 ~20wt%, phosphonic acid, P-methyl-,(5-ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphorinan-5-yl)methyl methyl ester 10~30wt% It is characterized by including

In the present invention, the composition of the non-flammable coating layer is 35 to 45 wt% of water, 2 to 5 wt% of titanium oxide, 0.1 to 1.0 wt% of melamine, 30 to 35 wt% of pentaerythritol, and 25 to 30 wt% of ethylene / VA copolymer Including.

In the present invention, the flame retardant resin is made of any one of Teflon, PVC, nylon and PC resin.

In the present invention, incombustibility is reinforced by the flame retardant FRP base material and the flame retardant coating layer.

Meanwhile, the non-flammable coating layer composition may further include 1 to 5 wt% of a phosphorus-based polymer formed by modifying polypropylene glycol through a phosphorylation reaction.

In this case, the phosphorylation reaction may be performed by adding 30 to 60 parts by weight of tricresylphosphoric acid (TCP) and 2 to 8 parts by weight of xylene based on 100 parts by weight of the polypropylene glycol and reacting at 80 to 95 ° C.

According to an embodiment of the present invention, by forming a non-flammable coating layer on the surface of the flame-retardant FRP base material containing the flame-retardant resin, it is possible to manufacture an FRP material with reinforced non-flammable performance.

By adding a new phosphorus-based polymer to the incombustible coating layer composition, the dispersing force and bonding force between the FRP resin and the incombustible coating layer are improved, so that incombustibility is further reinforced and durability is improved.

Therefore, it is possible to replace the existing heavy, expensive, corrosion-resistant, but metal or existing FRP materials that had to be used in preparation for fire, and can be used for various purposes.

1 is a cross-sectional view of an FRP material reinforced with incombustibility according to the present invention.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view of an FRP material reinforced with incombustibility according to the present invention.

Referring to FIG. 1, an FRP material 100 reinforced with incombustibility according to the present invention includes a flame retardant FRP base material 101 containing a flame retardant resin, and a flame retardant coated with a flame retardant on the surface of the flame retardant FRP base material 101. A coating layer 103 is formed.

The flame retardant resin included in the flame retardant FRP base material 101 is made of any one of Teflon, PVC (Polyvinyl chloride), nylon and PC (Polycarbonate) resin.

However, the flame retardant resin is not limited to the resins listed above.

For example, since the higher the oxygen index (OI), the more difficult the combustion is, the flame retardant resin is not limited to a specific resin as long as the oxygen index is high (20 or more).

The composition of the flame retardant coating layer 103, in one embodiment, 1,3,5-triazine-2,4,6-triamine (1,3,5-Triazine-2,4,6-Triamine) 10~20wt%, Ammonium Polyphosphate 30~50wt%, Dimethyl Polysiloxane 1~10wt%, Xylene 10~20wt%, Phosphonic acid, P-methyl-,(5 -Ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphorinan-5-yl)methyl methyl ester 10-30wt%, and phosphorus-based polymer 1 formed by modifying polypropylene glycol through phosphorylation Contains ~5wt%.

In the composition of the flame retardant coating layer 103 of one embodiment, the 1,3,5-triazine-2,4,6-triamine (1,3,5-Triazine-2,4,6-Triamine) is a halogen It is a halogen-free non-flammable agent, and is included in the composition to perform a non-combustible function.

And the ammonium polyphosphate (Ammonium Polyphosphate) is a phosphorus-nitrogen nonflammable agent, and serves as a nonflammable agent due to surface coating in the combustion process, heat dissipation by evaporation of phosphorus compounds, dilution of decomposition products, reduction of melt viscosity, and the like.

Therefore, the ammonium polyphosphate (Ammonium Polyphosphate) has the highest content (30 to 50 wt%) in the composition.

In addition, since the dimethyl polysiloxane is an inert material, it has a chemically very stable state and maintains its original state without change even when it reacts with other compositions, so that it does not catch fire and is not particularly toxic.

In addition, the xylene is included in the composition to perform an adhesive function so that the coating is formed.

In addition, the phosphonic acid, P-methyl-, (5-ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphorinan-5-yl) methyl methyl ester is included in the composition It has the function of reducing smoke density.

Meanwhile, as the composition of the incombustible coating layer 103, polyoxyethylene sorbitan ester may be further included. Since the polyoxyethylene sorbitan ester has excellent emulsifying power and dispersibility, the dispersibility of the oil-based non-flammable coating liquid constituting the non-flammable coating layer can be improved.

The phosphorus polymer is formed by modifying polypropylene glycol through a phosphorylation reaction. The phosphorylation reaction is performed by adding 30 to 60 parts by weight of tricresyl phosphoric acid (TCP) and 2 to 8 parts by weight of xylene based on 100 parts by weight of the polypropylene glycol and reacting at 80 to 95 ° C. for a certain period of time, for example, 8 hours. may be a reaction. After the phosphorylation reaction, the product may be concentrated and washed under reduced pressure to prepare a phosphorus-based polymer.

Through the phosphorus-based polymer, it is possible to improve the dispersing force and bonding force between the incombustible component and the resin. When the phosphorus polymer is contained, the viscosity of the resin composition is lowered and workability is improved. This is because the incombustible component of the phosphorus polymer improves dispersibility with the resin constituting the FRP.

The phosphorus polymer preferably has a weight part of 1 to 5 wt% in the composition of the flame retardant coating layer 103. When the phosphorus-based polymer is used in an amount of 1 part by weight or less, the viscosity of the paint is high, making it difficult to disperse with other components. When the amount of the phosphorus-based polymer exceeds 5 parts by weight, other incombustible agents are quickly precipitated, resulting in a decrease in incombustibility or deterioration in adhesion.

As described above, the composition contained in the non-retardant coating layer 103 according to one embodiment is a material that contributes to non-combustibility and coating function, and is coated on the flame-retardant FRP base material 101 containing a flame-retardant resin, so that it does not burn. It is possible to manufacture FRP materials with improved non-combustible performance that endures well without damage.

And the composition of the non-flammable coating layer 103, in another embodiment, water (Water) 35 ~ 45wt%, titanium oxide (Titanium oxide) 2 ~ 5wt%, melamine (Melamine) 0.1 ~ 1.0wt%, pentaerythritol (Pentaerythritol) or pentaerythritol tetranitrate (Pentaerythritol tetranitrate, PETN) 30-35wt%, Ethylene/VA (vinyl acetate) Copolymer 25-30wt%, polypropylene glycol is denatured through phosphorylation, and 1 to 5 wt% of a phosphorus-based polymer.

Among the compositions of the incombustible coating layer 103 according to another embodiment, the titanium oxide is present in powder form and has a very high boiling point (about 2,900 ° C) and flash point (about 2,500 to 3,000 ° C). It is composed in a small amount (2 ~ 5wt%) because it is high.

In addition, the melamine (Melamine) is composed of a very small amount (0.1 ~ 1.0wt%) to impart an adhesive function.

And the pentaerythritol (Pentaerythritol) has a fire resistance and flame retardant function in the composition. Accordingly, the Pentaerythritol (Pentaerythritol) has a large content (30 to 35 wt%) in the composition next to water.

In addition, the ethylene/VA copolymer functions as an adhesive, binder, and film forming agent in the composition.

The phosphorus polymer is formed by modifying polypropylene glycol through a phosphorylation reaction. The phosphorylation reaction is performed by adding 30 to 60 parts by weight of tricresyl phosphoric acid (TCP) and 2 to 8 parts by weight of xylene based on 100 parts by weight of the polypropylene glycol and reacting at 80 to 95 ° C. for a certain period of time, for example, 8 hours. may be a reaction. After the phosphorylation reaction, the product may be concentrated and washed under reduced pressure to prepare a phosphorus-based polymer.

Since the composition ratio and function of the phosphorus-based polymer are the same as those described in the composition of the flame retardant coating layer 103 of the above-described embodiment, a detailed description thereof will be omitted.

Such a composition is mixed with water (35 to 45 wt%) to form an incombustible coating layer 103.

After the coated non-flammable coating layer 103 is formed by coating the flame retardant FRP base material 101, the non-flammable reinforced FRP material 100 according to the present invention is completed through natural drying or oven drying.

On the other hand, the coating thickness of the incombustible coating layer 103 is not limited to a specific dimension as long as it can withstand fire (or fire).

The coating thickness may vary according to the thickness or area of the flame retardant FRP base material 101, and may also vary depending on the purpose of lining or wall reinforcement, and economic feasibility is also a consideration.

The action of the incombustible reinforced FRP material according to the present invention having the configuration as described above is as follows.

Referring back to FIG. 1 , in the FRP material 100 reinforced with incombustibility according to the present invention, an incombustible coating layer 103 is formed on the surface of the flame retardant FRP base material 101 containing the flame retardant resin.

Therefore, the non-combustibility reinforced FRP material 100 according to the present invention has non-combustibility that does not catch fire even at high temperature by imparting non-flammability characteristics to the flame-retardant FRP base material 101 equipped with corrosion resistance, waterproofness, lightness and robustness. It is reinforced and can be used for various purposes.

On the other hand, conventional FRP materials have corrosion resistance, light weight, and robust characteristics, but are vulnerable to fire and have very limited uses.

However, the incombustibility reinforced FRP material 100 according to the present invention, by adding incombustibility, can replace the existing heavy, expensive, and weak against corrosion, but had to be used to prepare for fire.

That is, the FRP material 100 reinforced with incombustibility according to the present invention can replace existing FRP products or metal products installed in coal-fired power plant equipment, electronic company equipment, chemical plant company equipment, etc. exposed to severe corrosion and fire. there is.

As described above, the present invention has been described with reference to the embodiment shown in the drawings, but this is only exemplary, and those skilled in the art can make various modifications and equivalent embodiments therefrom. will understand

Therefore, the true protection scope of the present invention should be defined only by the appended claims.

100. FRP materials reinforced with incombustibility
101. Flame retardant FRP base material
103. Incombustible coating layer

Claims (7)

A flame retardant coating layer coated with a flame retardant is formed on the surface of the flame retardant FRP base material containing the flame retardant resin,
The composition of the non-flammable coating layer is 1,3,5-triazine-2,4,6-triamine 10 ~ 20wt%, ammonium polyphosphate 30 ~ 50wt%, dimethylpolysiloxane 1 ~ 10wt%, xylene 10 ~20wt%, phosphonic acid, P-methyl-,(5-ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphorinan-5-yl)methyl methyl ester 10~30wt% Incombustibility reinforced FRP material, characterized in that it comprises. According to claim 1,
The composition of the incombustible coating layer is reinforced with incombustibility, characterized in that it further comprises the polyoxyethylene sorbitan ester (polyoxyethylene sorbitan ester) FRP material. A flame retardant coating layer coated with a flame retardant is formed on the surface of the flame retardant FRP base material containing the flame retardant resin,
The composition of the non-flammable coating layer includes 35 to 45 wt% of water, 2 to 5 wt% of titanium oxide, 0.1 to 1.0 wt% of melamine, 30 to 35 wt% of pentaerythritol, and 25 to 30 wt% of ethylene/VA copolymer. FRP material characterized by reinforced incombustibility. According to any one of claims 1 to 3,
The flame retardant resin is a nonflammable reinforced FRP material, characterized in that made of any one of Teflon, PVC, nylon and PC resin. According to any one of claims 1 to 3,
Incombustibility reinforced FRP material, characterized in that incombustibility is reinforced by the flame retardant FRP base material and the incombustible coating layer. According to any one of claims 1 to 3,
The non-flammable coating layer composition further comprises 1 to 5 wt% of a phosphorus-based polymer formed by modifying polypropylene glycol through a phosphorylation reaction. According to claim 6,
The phosphorylation reaction is reinforced incombustibility, characterized in that by adding 30 to 60 parts by weight of tricresyl phosphoric acid (TCP) and 2 to 8 parts by weight of xylene with respect to 100 parts by weight of the polypropylene glycol and reacting at 80 to 95 ° C. FRP material.

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