KR102586558B1 - Frp material with reinforced non-combustibility, corrosion resistance and waterproofness - Google Patents

Abstract

The present invention relates to an FRP material with improved incombustibility, corrosion resistance, and waterproofing properties to ensure long-term durability without burning.
The present invention includes a flame-retardant FRP base material containing a flame-retardant resin; A fire retardant coating layer coated with a fire retardant on the surface of the flame retardant FRP base material; It includes a flame retardant coating layer coated on the surface of the fire retardant coating layer, wherein the composition of the fire retardant coating layer includes 10 to 20 wt% of 1,3,5-triazine-2,4,6-triamine, and 30 to 30 wt% of ammonium polyphosphate. 50wt%, dimethylpolysiloxane 1~10wt%, xylene 10~20wt%, phosphonic acid, P-methyl-,(5-ethyl-2-methyl-2-oxido-1,3,2-dioxaphos) The composition of the flame retardant coating layer contains 10 to 30 wt% of polinan-5-yl) methyl methyl ester, and the composition of the flame retardant coating layer includes a vinyl ester resin containing a large amount of halogen elements, providing an FRP material with reinforced incombustibility, corrosion resistance, and waterproofing. .

Description

FRP material with reinforced incombustibility, corrosion resistance and waterproofness {FRP MATERIAL WITH REINFORCED NON-COMBUSTIBILITY, CORROSION RESISTANCE AND WATERPROOFNESS}

The present invention relates to an FRP material with reinforced incombustibility, corrosion resistance, and waterproofing. More specifically, it relates to an FRP material with improved incombustibility, corrosion resistance, and waterproofing that has been improved to last longer without burning.

In general, Fiberglass Reinforced Plastic (FRP) is a composite material that uses resin with excellent water resistance, chemical resistance, and heat resistance, and glass fiber with excellent tensile strength performance. , it has excellent corrosion resistance, heat resistance, high durability and lightness, and has excellent adhesion, making it easy to mix with other materials.

FRP, which has these characteristics, is made into a pipe and used as a conveyance passage for transporting highly corrosive gases, wastewater, and sewage, and is made into a tank and used as a reaction tank in a chemical plant and a process in a semiconductor factory. It is used as a chemical tank, a raw material storage container in a food factory, and a food-resistant chemical storage container.

In addition, FRP is manufactured as a lining material and installed as a lining on the inner wall of a concrete water tank, for example, to maintain airtightness and watertightness of the concrete water tank.

In addition, FRP can be attached to the outside of the structure using epoxy or the like, or by forming grooves and adhering to the structure to reinforce the structure.

However, the structural reinforcement method of FRP has the problem of easily losing its fixing power to FRP due to breakage or damage in an environment such as epoxy slip, external impact, and high temperature (approximately 102°C, the glass transition temperature of epoxy-based FRP resin), especially in case of fire. There was a very weak problem.

As mentioned above, as a prior document related to the reinforcement method using FRP, Registered Patent No. 10-1618252 (registered on April 28, 2016) discloses a fiber-reinforced plastic (FRP) reinforcement device and a structure reinforcement method using the same. It is done.

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

The fiber-reinforced plastic (FRP) reinforcement device of the registered patent, which has 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 an FRP core. By laminating a second fiber-reinforced coating layer by spraying on the outer surface of the FRP core, the first fiber-reinforced coating layer and the FRP core are more firmly anchored to the surface of the structure, and end peeling can be prevented, further improving reinforcement performance. .

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

In other words, in the case of the above-mentioned registered patent, although FRP is structurally reinforced, it has the problem of being vulnerable to fire in the event of a fire.

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

Accordingly, conventional FRP materials are difficult to use as non-combustible materials due to their low incombustibility, so they cannot be used in coal-fired power plant equipment, electronics company equipment, and chemical plant company equipment, which are highly exposed to corrosion and fire, and thus their usability is poor.

In other words, these companies, which are exposed to a lot of corrosion and fire, had no choice but to use metal materials that are resistant to fire but are heavy, expensive, and vulnerable to corrosion in preparation for fire outbreaks.

The present invention was created to solve the above problems, and its purpose is to provide an FRP material with reinforced incombustibility, corrosion resistance, and waterproofing that can replace metal materials by reinforcing incombustibility, etc. and can be used for various purposes.

The FRP material with reinforced incombustibility, corrosion resistance, and waterproofness of the present invention to achieve the above object includes a flame-retardant FRP base material containing a flame-retardant resin; A fire retardant coating layer coated with a fire retardant on the surface of the flame retardant FRP base material; It includes a flame retardant coating layer coated on the surface of the fire retardant coating layer, wherein the composition of the fire retardant coating layer includes 10 to 20 wt% of 1,3,5-triazine-2,4,6-triamine, and 30 to 30 wt% of ammonium polyphosphate. 50wt%, dimethylpolysiloxane 1~10wt%, xylene 10~20wt%, phosphonic acid, P-methyl-,(5-ethyl-2-methyl-2-oxido-1,3,2-dioxaphos) Contains 10 to 30 wt% of phorinan-5-yl)methyl methyl ester,

The composition of the flame retardant coating layer includes a vinyl ester resin containing a halogen element.

In this case, the composition of the fire retardant coating layer may further include polyoxyethylene sorbitan ester.

Meanwhile, in another aspect of the present invention, an FRP material with reinforced incombustibility, corrosion resistance, and waterproofness includes a flame-retardant FRP base material containing a flame-retardant resin; A fire retardant coating layer coated with a fire retardant on the surface of the flame retardant FRP base material; It includes a flame retardant coating layer coated on the surface of the fire retardant coating layer, wherein the composition of the fire retardant coating layer is 35 to 45 wt% water, 2 to 5 wt% titanium oxide, 0.1 to 1.0 wt% melamine, and 30 to 35 wt% pentaerythritol. , and 25 to 30 wt% of ethylene/VA copolymer, and the composition of the flame retardant coating layer includes a vinyl ester resin containing a halogen element.

The flame retardant resin may be made of any one of Teflon, PVC, nylon, and PC resin.

The halogen group element may include Br.

The flame retardant coating layer composition may further include 1 to 5 wt% of a phosphorus-based polymer obtained by modifying polypropylene glycol through a phosphorylation reaction.

In this case, the phosphorylation reaction can be accomplished 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 polypropylene glycol and reacting at 80 to 95°C.

According to an embodiment of the present invention, by sequentially forming a flame retardant coating layer and a flame retardant coating layer on the surface of a flame retardant FRP base material containing a flame retardant resin, it is possible to manufacture an FRP material with reinforced incombustibility, corrosion resistance, and water resistance.

By adding a new phosphorus-based polymer to the retardant coating layer composition, the dispersion and bonding power between the FRP resin and the retardant coating layer are improved, thereby further strengthening retardant performance and improving durability.

In particular, in the case of the flame retardant coating layer, flame retardancy as well as corrosion resistance can be improved by applying a vinyl ester resin containing halogen elements.

Therefore, it has become possible to replace metal or existing FRP materials, which are heavy, expensive, and vulnerable to corrosion, but had to be used to prevent fire, and can be used for various purposes.

Figure 1 is a cross-sectional view of an FRP material with reinforced incombustibility, corrosion resistance, and waterproofness according to the present invention.

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

Figure 1 shows a cross-sectional view of an FRP material with reinforced incombustibility, corrosion resistance, and waterproofness according to the present invention.

Referring to FIG. 1, the FRP material 100 with reinforced incombustibility, corrosion resistance, and waterproofness according to the present invention includes a flame retardant FRP base material 101 containing a flame retardant resin, and a flame retardant agent on the surface of the flame retardant FRP base material 101. It is comprised of a fire retardant coating layer 103 formed by coating, and a flame retardant coating layer 105 formed by coating a flame retardant on the surface of the fire retardant coating layer 103.

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 combustion is, the flame retardant resin is not limited to a specific resin as long as it is a resin with a high oxygen index (20 or more).

And the composition of the fire retardant coating layer 103, in one embodiment, is 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-, ( 10-30 wt% of 5-ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphorinan-5-yl)methyl methyl ester and a phosphorus-based polymer made by modifying polypropylene glycol through phosphorylation. Contains 1 to 5 wt%.

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 fire retardant and is included in the composition to provide a fire retardant function.

And the ammonium polyphosphate is a phosphorus-nitrogen flame retardant, and acts as a fire retardant during the combustion process due to surface coating, heat dissipation by evaporation of phosphorus compounds, dilution of decomposition products, and reduction of melt viscosity.

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

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

And the xylene is included in the composition and functions as an adhesive to enable coating.

Additionally, 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 lowering smoke density.

Meanwhile, the composition of the flame retardant coating layer 103 may further include polyoxyethylene sorbitan ester. The polyoxyethylene sorbitan ester has excellent emulsifying power and dispersibility, and can improve the dispersibility of the oil-based retardant coating liquid forming the non-combustible coating layer.

The phosphorus-based polymer is made by modifying polypropylene glycol through a phosphorylation reaction. The phosphorylation reaction involves adding 30 to 60 parts by weight of tricresyl phosphate (TCP) and 2 to 8 parts by weight of xylene to 100 parts by weight of polypropylene glycol and reacting at 80 to 95° C. for a certain period of time, for example, 8 hours. It could be a reaction. After the phosphorylation reaction, the product can be concentrated and washed under reduced pressure to produce a phosphorus-based polymer.

Through the phosphorus-based polymer, it is possible to improve the dispersion and bonding power between the fire retardant component and the resin. When the phosphorus-based polymer is contained, the viscosity of the resin composition is lowered and workability is improved. This is because the flame retardant component of the phosphorus-based polymer improves dispersibility with the resin that makes up FRP.

The phosphorus-based polymer preferably has a weight portion 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. If the phosphorus-based polymer exceeds 5 parts by weight, precipitation of other retardants occurs quickly, leading to a decrease in retardant effect or adhesion.

In this case, the phosphorus-based polymer, as described above, is a composition contained in the fire-retardant coating layer 103 according to an embodiment, which is a material that contributes to fire-retardant and coating functions, and is a flame-retardant FRP base material 101 containing a flame-retardant resin. By being coated with it, an FRP material 100 with improved fire resistance performance that does not burn and can withstand fire can be manufactured.

In another example of the composition of the fire retardant coating layer 103, 35 to 45 wt% of water, 2 to 5 wt% of titanium oxide, 0.1 to 1.0 wt% of melamine, and pentaerythritol ( Pentaerythritol or Pentaerythritol tetranitrate (PETN) 30-35wt%, Ethylene/VA (vinyl acetate) Copolymer 25-30wt%, made by denaturing polypropylene glycol through phosphorylation Contains 1 to 5 wt% of phosphorus-based polymer.

Among the compositions of the flame retardant coating layer 103 of other embodiments, titanium oxide exists in powder form and has a very high boiling point (about 2,900°C) and a high flash point (about 2,500-3,000°C). It is composed in a small amount (2~5wt%).

In addition, the melamine is composed of an extremely small amount (0.1 to 1.0 wt%) and functions as an adhesive.

And the pentaerythritol functions as fire retardant and flame retardant in the composition. Accordingly, pentaerythritol has the highest content (30 to 35 wt%) in the composition after water.

Additionally, the ethylene/VA copolymer functions as an adhesive, binder, and film former in the composition.

The phosphorus-based polymer is made by modifying polypropylene glycol through a phosphorylation reaction. The phosphorylation reaction involves adding 30 to 60 parts by weight of tricresyl phosphate (TCP) and 2 to 8 parts by weight of xylene to 100 parts by weight of polypropylene glycol and reacting at 80 to 95° C. for a certain period of time, for example, 8 hours. It could be a reaction. After the phosphorylation reaction, the product can be concentrated and washed under reduced pressure to produce 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, detailed description is omitted.

This composition is mixed with water (35 to 45 wt%) to form the non-flammable coating layer 103.

Next, the composition of the flame retardant coating layer 105 includes a vinyl ester resin containing a large amount of halogen elements.

Vinyl ester resin containing a large amount of such halogen elements has high flame retardancy characteristics and is particularly excellent in corrosion resistance.

In addition, the vinyl ester resin of the composition of the flame retardant coating layer 105 has high heat resistance characteristics, is lightweight, has high specific strength, and has a high oxygen index (OI) of 32 to 38.

And the halogen element of the flame retardant coating layer 105 includes Br (bromine or bromine).

The Br functions as a flame retardant in the composition of the flame retardant coating layer 105.

After forming the flame retardant coating layer 103 and the flame retardant coating layer 105 by coating the flame retardant FRP base material 101, the FRP material 100 with reinforced incombustibility, corrosion resistance, and water resistance according to the present invention is dried naturally or in an oven. Complete .

Meanwhile, the coating thickness of the flame retardant coating layer 103 and the flame retardant coating layer 105 is not limited to a specific size as long as it can withstand fire (or fire) and exhibit non-flammability, corrosion resistance, and waterproofing properties.

The coating thickness may vary depending on the thickness or area of the flame-retardant FRP base material 101, and may also vary depending on the purpose for which it is used, for example, lining or wall reinforcement, and economic efficiency is also a consideration.

The operation of the FRP material with reinforced incombustibility, corrosion resistance, and waterproofness according to the present invention having the above-described structure is explained as follows.

Referring again to FIG. 1, the FRP material 100 with reinforced incombustibility, corrosion resistance, and waterproofness according to the present invention includes a fire retardant coating layer 103 and a flame retardant coating layer ( 105) were formed sequentially.

That is, when only the flame retardant coating layer 103 is formed, moisture may be absorbed, making it insufficient to be used as an exterior material.

In order to solve this problem, by forming a flame retardant coating layer 105 made of a flame retardant resin composition with excellent moisture resistance on the surface of the fire retardant coating layer 103, an FRP material that is resistant to fire and has strong moisture resistance can be manufactured.

Therefore, the FRP material 100 with reinforced incombustibility, corrosion resistance, and waterproofness according to the present invention provides the properties of incombustibility, corrosion resistance, and waterproofing to the flame-retardant FRP base material 101, which is corrosion-resistant, waterproof, lightweight, and robust. It can be used for various purposes.

Meanwhile, existing FRP materials were lightweight and strong, but were vulnerable to fire and had very limited uses.

However, the FRP material 100 with reinforced incombustibility, corrosion resistance, and waterproofness according to the present invention adds incombustibility, corrosion resistance, waterproofness, and flame retardancy at the same time, so it can be used to prepare for fire despite being heavy, expensive, and weak against corrosion. It has become possible to replace the inevitable metal products.

In other words, the FRP material 100 with reinforced incombustibility, corrosion resistance, and waterproofness according to the present invention can be used as an existing FRP product or metal product installed in coal-fired power plant equipment, electronics company equipment, and chemical plant company equipment, etc., which are highly exposed to corrosion and fire. can be replaced.

As described above, the present invention has been described with reference to an embodiment shown in the drawings, but this is merely illustrative, and various modifications and equivalent embodiments can be made by those skilled in the art. You will understand.

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

100. FRP material with reinforced incombustibility, corrosion resistance and waterproofing
101. Flame retardant FRP base material
103. Flame retardant coating layer
105. Flame retardant coating layer

Claims (7)

A flame-retardant FRP base material containing a flame-retardant resin;
A fire retardant coating layer coated with a fire retardant on the surface of the flame retardant FRP base material;
Including a flame retardant coating layer coated on the surface of the fire retardant coating layer,
The composition of the flame retardant coating layer includes 10 to 20 wt% of 1,3,5-triazine-2,4,6-triamine, 30 to 50 wt% of ammonium polyphosphate, 1 to 10 wt% of dimethylpolysiloxane, and 10 wt% of xylene. ~20wt%, phosphonic acid, p-methyl-,(5-ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphorinan-5-yl)methyl methyl ester, 10~30wt% Contains,
The flame retardant coating layer composition further contains 1 to 5 wt% of a phosphorus-based polymer made by modifying polypropylene glycol through a phosphorylation reaction,
The phosphorylation reaction is a reaction in which 30 to 60 parts by weight of tricresyl phosphoric acid (TCP) and 2 to 8 parts by weight of xylene are added to 100 parts by weight of polypropylene glycol and reacted at 80 to 95° C., wherein the phosphorus-based polymer is After the phosphorylation reaction, the product is concentrated under reduced pressure.
The composition of the flame retardant coating layer is an FRP material with reinforced incombustibility, corrosion resistance, and waterproofing, characterized in that it contains a vinyl ester resin containing a halogen element. According to paragraph 1,
The composition of the incombustible coating layer is an FRP material with reinforced incombustibility, corrosion resistance and waterproofing, characterized in that it further contains polyoxyethylene sorbitan ester. delete According to claim 1 or 2,
The vinyl ester resin is an FRP material with reinforced incombustibility, corrosion resistance, and waterproofing, characterized in that the oxygen index (OI) is 32 to 38. According to claim 1 or 2,
An FRP material with reinforced incombustibility, corrosion resistance, and waterproofing, characterized in that the halogen group element includes Br.
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