KR101986112B1 - Fire Retardant FRP Panel Composition Made of Complex Fiber Material Manufactured by Drawing with Binder Having Epoxy Resin and Acid Anhydride-Hardener and Constructing Methods Using Thereof - Google Patents

Abstract

The present invention relates to a fire retardant FPR panel composition which comprises 60-120 parts by weight of an anhydride hardener; 70-90 parts by weight of a molded product; 5-50 parts by weight of a filler; 3-15 parts by weight of an adhesion promoter; 3-20 parts by weight of a flame retardant; 10-30 parts by weight of N-(2-aminoethyl-3-aminopropyl)trimethoxysilane; 0.1-20 parts by weight of an antifoaming agent; 0.1-20 parts by weight of a dispersant; and 1-10 parts by weight of an adhesion promoter, based on 100 parts by weight of an epoxy resin. Therefore, the fire retardant FPR panel composition is resistant to fire and has good moldability.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a FRP panel composition which is a flame retardant material obtained by pultruding a composite fiber material using an epoxy resin and an acid anhydride curing agent as a binder, and a concrete structure repair / and Acid Anhydride-Hardener and Constructing Methods Using Thereof}

The present invention relates to a FRP panel composition which is a flame retardant material including a composite fiber material using an epoxy resin and an acid anhydride curing agent as a binder. More particularly, the present invention relates to an FRP panel composition comprising an epoxy resin and an acid anhydride FRP panel composition which is a flame retardant material containing a composite fiber material using a curing agent as a binder, and a repairing and reinforcing method using the FRP panel composition.

Generally, as time goes by, the durability and the load-bearing capacity are reduced due to various causes such as design and construction defects, structural changes during use, aging due to environmental changes, natural disasters and fire, Structures received can lead to disintegration. Not only large-scale disasters such as human casualties, but also major facilities and transportation networks, which are social infrastructure, suffer long-term paralysis and require massive construction costs.

In order to secure the safety of the structures damaged by structural damage, a total or partial reinforcement action is indispensable. Various repair and reinforcement methods have been developed to solve these problems. The main reinforcement methods include a steel sheet reinforcement method, Reinforcement method, and fiberboard reinforcement method. Depending on the construction method, it can be divided into field impregnation reinforcement method, compression reinforcement method, adhesive reinforcement method, and landfill reinforcement method.

Here, the steel plate reinforcing method has been widely applied to actual structures due to the proven reinforcing effect and workability. However, the steel plate reinforcing method is problematic in terms of workability and maintenance because it is vulnerable to heavy weight and corrosion of the steel plate.

Especially, due to the excessive weight of the steel sheet, heavy equipment is required at the time of construction. There is a risk of fire due to welding work and other anti-corrosive coating is needed to prevent corrosion.

In addition, the steel plate reinforcing method described above has a problem in durability, such as weakening of the adhesion force generated at the interface between the target structure and the reinforcing material, due to the sealing phenomenon due to the air permeability loss.

And the field impregnation strengthening method is a reinforcement method using fiber reinforced composite materials such as carbon fiber, glass fiber and aramid fiber in a low cost and easy to handle, fast and easy construction workability and excellent durability. Has come.

However, since the cost of the carbon fiber is very high, it is not easy to apply and the carbon fiber is not suitable for use in a place where a high voltage current flows as a conductor.

In addition, the glass fiber has a relatively low price as compared with the carbon fiber and has an advantage as a low-elasticity material. However, there is a problem in workability due to glass dust during the production, cutting and construction of glass fiber, However, it has been known to affect the environment at the time of disposal, and in recent years it has been classified as a potential carcinogen and its use has been limited.

In the case of the aramid fiber, the mechanical and mechanical performance of the aramid fiber is considerably lower than that of the glass fiber or carbon fiber.

In addition, the above-mentioned site impregnation reinforcing method is difficult to construct as compared with the reinforcing performance, and quality is greatly influenced by skill and know-how of the worker.

This also causes problems such as lack of ventilation due to the front construction and maintenance difficulty.

On the other hand, the fiberboard reinforcement method has a superior material property, but it has a limitation in the adhesion performance such as peeling of the end due to a mechanism that depends only on the epoxy adhesive to adhere to the object to be reinforced. This method also has problems such as lack of ventilation due to the front construction and maintenance difficulty.

In order to overcome such a problem, Korean Patent No. 10-1204368 discloses a panel for reinforcing and reinforcing concrete structures using basalt fiber.

On the other hand, in order to repair and reinforce the concrete structure, it is necessary to develop a composition having sufficient durability to manufacture such a product, since various materials such as plates, ribs, and panels can be used.

The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a composite material which is capable of impregnating an epoxy resin into a composite material obtained by drawing basalt fiber, aramid fiber, glass fiber, carbon fiber, And an object of the present invention is to provide an FRP panel composition which is a flame retardant material capable of improving durability, impact resistance and strength.

In particular, the present invention provides a FRP panel composition which is a flame retardant material including a composite fiber material applicable to civil engineering structures such as buildings, substations, computer rooms, special structures such as underground parking lots, and building structures such as tunnels and bridges.

The FRP panel composition as a flame retardant material according to the present invention is excellent in fire resistance and moldability by providing an FRP panel composition which is a flame retardant material improved in flame retardancy, mechanical strength, durability, impact resistance and strength, So that the production cost is low.

Also, the FRP panel composition according to the present invention can be applied in various shapes according to the drawing form of the composite fiber material, and can be applied to special structures such as buildings, substations, computer rooms, building structures such as underground parking lots, tunnels, It is easy to apply to civil engineering structures.

Hereinafter, the present invention will be described in detail.

In one aspect, the present invention provides an epoxy resin composition comprising at least one epoxy resin selected from the group consisting of a bisphenol A epoxy resin, a bisphenol F epoxy resin, a novolak epoxy resin, a modified dimeric acid epoxy resin, a modified rubber epoxy resin, a modified urethane epoxy resin, On the basis of parts by weight, there may be mentioned dodecyl succinic anhydride, hexahydro-4-methyl phthalic anhydride, methylbutenyltetrahydrophthalic anhydride, methylenedomethylene tetrahydrophthalic anhydride, methyltetrahydrof A thiol compound, a thiol compound, a thiol compound, a thiol compound, a thiol compound, a thiol compound, a thiol compound, a thiol compound, a thiol compound, Anhydride or one or more thereof selected therefrom. 60 to 120 parts by weight of an acid anhydride curing agent; 70 to 90 parts by weight of a molded product obtained by drawing basalt fiber, aramid fiber, glass fiber, carbon fiber, metal fiber or a mixture of at least one selected from the foregoing; 5 to 50 parts by weight of a filler consisting of calcium carbonate, talc, alumina or a mixture thereof; Gamma -aminopropyltrimethoxysilane, gamma-aminopropyltriethoxysilane, N-beta- (aminoethyl) -gamma-aminopropyltrimethoxysilane, beta- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, gamma- Trimethoxysilane or 3 to 15 parts by weight of at least one adhesion promoter selected from the foregoing; 3 to 20 parts by weight of a flame retardant; 10 to 30 parts by weight of N- (2-aminoethyl-3-aminopropyl) trimethoxysilane; 0.1 to 20 parts by weight of an antifoaming agent; 0.1 to 20 parts by weight of a dispersant; And 1 to 10 parts by weight of an adhesion promoter.

According to another aspect of the present invention, there is provided a method for producing a molded article, comprising: a drawing-forming step of drawing a molded product obtained by drawing basalt fiber, aramid fiber, glass fiber, carbon fiber, metal fiber or a mixture thereof; Based on 100 parts by weight of at least one epoxy resin selected from the group consisting of bisphenol A epoxy resin, bisphenol F epoxy resin, novolak epoxy resin, modified dimeric epoxy resin, modified rubber epoxy resin, modified urethane epoxy resin, Anhydride, anhydride, hexahydro-4-methylphthalic anhydride, methylbutenyltetrahydrophthalic anhydride, methylenedomethylene tetrahydrophthalic anhydride, methyltetrahydrophthalic anhydride, methylcyclohexane Dicarboxylic anhydride, succinic anhydride, tetrahydrophthalic anhydride, trimellitic anhydride, hexahydrophthalic anhydride, benzophenone tracarboxylic anhydride, or a mixture thereof. The above acid anhydride curing agents 60 to 120 Ryangbu; 5 to 50 parts by weight of a filler consisting of calcium carbonate, talc, alumina or a mixture thereof; Gamma -aminopropyltrimethoxysilane, gamma-aminopropyltriethoxysilane, N-beta- (aminoethyl) -gamma-aminopropyltrimethoxysilane, beta- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, gamma- Trimethoxysilane or 3 to 15 parts by weight of at least one adhesion promoter selected from the foregoing; 3 to 20 parts by weight of a flame retardant; 10 to 30 parts by weight of N- (2-aminoethyl-3-aminopropyl) trimethoxysilane; 0.1 to 20 parts by weight of an antifoaming agent; 0.1 to 20 parts by weight of a dispersant; And 1 to 10 parts by weight of an adhesion promoter is impregnated into 70 to 90 parts by weight of a molded product obtained by drawing and drawing in a draw-forming step to produce an FRP panel composition as a flame retardant material; Arranging a base surface of a concrete structure to which the FRP panel composition as the flame retardant material is to be applied; Attaching and fixing an FRP panel composition to the base surface of the concrete structure; Sealing the surface of the FRP panel composition, which is the flame retardant material, with the surface of the concrete structure with a sealing material; And a step of installing an injection pipe and a check pipe in the FRP panel composition as the flame retardant material and confirming the filling of the epoxy resin through the check pipe while filling the epoxy resin through the injection pipe do.

The FRP panel composition as a flame retardant material according to the present invention can be obtained by impregnating a composite material obtained by drawing basalt fiber, aramid fiber, glass fiber, carbon fiber or metal fiber with a mixture of an epoxy resin and an acid anhydride curing agent to repair and / And is not particularly limited as long as it is capable of improving flame retardancy, mechanical performance, and / or impact resistance by applying it to necessary concrete, for example, a concrete structure.

Further, the FRP panel composition according to the present invention can be applied in various shapes according to the drawing form of the composite fiber material, and can be applied to special facilities such as buildings, substations, computer rooms, civil structures such as underground parking lots, It is easy to apply to the structure.

The FRP panel composition as a flame retardant material according to the present invention is a composite material obtained by drawing basalt fiber, aramid fiber, glass fiber, carbon fiber, metal fiber or the like to obtain a molded article such as a panel, The curing agent mixture is configured to be impregnated.

The epoxy resin according to the present invention can be mixed with an acid anhydride curing agent and cured to form the FRP.

Preferred epoxy resins are bisphenol A type epoxy resin, bisphenol F type epoxy resin, Novolac epoxy resin, Dimer Acid Modified Epoxy resin, resin, a rubber modified epoxy resin, a modified urethane epoxy resin, or a mixture of at least one selected from the foregoing.

As a specific aspect, the epoxy resin according to the present invention may be used alone, but the content of each epoxy resin constituting the epoxy resin is preferably 20 to 40% by weight based on 100% by weight of the entire epoxy resin, 20 to 40 wt% of bisphenol F type epoxy resin, 20 to 40 wt% of novolak epoxy resin, 10 to 30 wt% of modified dimeric acid epoxy resin, 5 to 20 wt% of modified rubber epoxy resin, and 5 to 20 wt% of modified urethane epoxy resin 5 By weight to 20% by weight.

Here, the bisphenol A type epoxy resin is a liquid epoxy resin and is excellent in adhesion, chemical resistance, heat resistance and other properties, and is a general-purpose epoxy resin to be used for various purposes. It has very small reaction shrinkage and does not cause volatilization, It has excellent strength, dimensional stability, rigidity, high temperature characteristics, abrasion resistance and high mechanical workability.

The above-mentioned bisphenol F type epoxy resin is a resin having H instead of CH3 among the molecules of bisphenol A type epoxy resin, and has a lower viscosity, higher plasticity and higher reactivity than the bisphenol A type.

The novolac epoxy resin is a resin having three or more epoxy groups as a reactive group and forms a tight cured structure, so that it has excellent chemical resistance, mechanical strength, adhesion and the like.

In addition, the modified dimeric acid epoxy resin is excellent in plasticity and impact resistance, and has good adhesion and dimensional stability.

Further, the modified rubber epoxy resin is a modified epoxy resin of NBR and CTBN, and has excellent toughness and plasticity and good adhesion.

The modified urethane epoxy resin is a urethane-modified epoxy resin, and has high flexibility and excellent elasticity.

As a specific aspect, the epoxy resin according to the present invention can be used as a composite molding, particularly a composite molding obtained by drawing a composite molding, specifically a basalt fiber, an aramid fiber, a glass fiber, a carbon fiber or a metal fiber, Solution.

At this time, the content of the remaining components other than the epoxy resin constituting the flame retardant material FRP panel composition is based on 100 parts by weight of the epoxy resin.

The acid anhydride curing agent according to the present invention is intended to provide a role as a binder by curing an epoxy resin contained in FRP panel composition as a flame retardant material. Any conventional acid anhydride curing agent having such a purpose can be used However, it is preferable to use a dodecenyl succinic anhydride, a hexahydro-4-methylphthalic anhydride, a methylbutenyl tetrahydrophthalic anhydride, anhydride, methylenedomethylene tetrahydrophthalic anhydride, methyltetrahydrophthalic anhydride, methylcyclohexene dicarboxylic anhydride, succinic anhydride, Succinic anhydride Tetrahydrophthalic anhydride, Trimellitic anhydride, Hexahydrophthalic anhydride, Benzophenone tracarboxylic anhydride, Tetrahydrophthalic anhydride, Tetrahydrophthalic anhydride, Trimellitic anhydride, Hexahydrophthalic anhydride, Benzophenone tracarboxylic anhydride, Or a mixture of at least one selected from these is preferably used. It is recommended that the amount thereof is 60 to 120 parts by weight based on 100 parts by weight of the epoxy resin.

As a specific embodiment, the acid anhydride curing agent according to the present invention can be selected depending on the user's choice, but the content of each acid anhydride curing agent constituting the acid anhydride curing agent is preferably selected such that the amount of the acid anhydride curing agent, 5 to 40% by weight of succinic anhydride, 5 to 30% by weight of hexahydro-4-methylphthalic anhydride, 5 to 25% by weight of methylbutenyltetrahydrophthalic anhydride, methylenedomethylene tetrahydrophthalic 5 to 25 wt.% Of anhydride, 5 to 25 wt.% Of methyltetrahydrophthalic anhydride, 5 to 25 wt.% Of methylcyclohexanedicarboxylic anhydride, 5 to 25 wt.% Of succinic anhydride, 5 to 25% by weight hydropertalic anhydride, 5 to 25% by weight trimellitic anhydride, hexahydrophthalic anhydride 5 To 25% by weight of benzophenone tricarboxylic anhydride and 5 to 25% by weight of benzophenone tricarboxylic anhydride.

The dodecylsin anhydride is an aliphatic liquid anhydride curing agent having good compatibility with an epoxy resin, a low viscosity, a long pot life, and good plasticity of a cured product.

The hexahydro-4-methylphthalic anhydride is an alicyclic liquid acid anhydride curing agent having a low viscosity, a long pot life, a high heat resistance and excellent mechanical properties, as well as a low viscosity, Is good and hardening shrinkage is small.

In addition, the hexahydro-4-methylphthalic anhydride has a high heat distortion temperature and good affinity with fibers.

In addition, the methylbutenyltetrahydrophthalic anhydride has a long pot life, high heat resistance, excellent mechanical properties, low hardening shrinkage, high heat distortion temperature, good affinity with fibers, dimensional stability Good products with good mechanical workability can be produced.

In addition, the methylenedomethylene tetrahydrophthalic anhydride has a low hardening shrinkage and a high heat distortion temperature, so that it has a good affinity with fibers, and is excellent in dimensional stability, mechanical workability and abrasion resistance.

The methyltetrahydrophthalic anhydride is an alicyclic liquid acid anhydride curing agent having a low viscosity, a long pot life, high heat resistance, excellent mechanical properties, low viscosity, good impregnation / Curing shrinkage is low and heat distortion temperature is high.

In addition, the methylcyclohexane dicarboxylic anhydride has a very long pot life, has high heat resistance and excellent mechanical properties, has a low hardening shrinkage, a high heat distortion temperature, and good dimensional stability.

In addition, the succinic anhydride is an acid anhydride of a succinic acid, has a very long pot life, has a high heat resistance and excellent mechanical properties, has a low hardening shrinkage and a high heat distortion temperature.

In addition, the tetrahydrophthalic anhydride has a very long pot life, has high heat resistance and excellent mechanical properties, and has high heat distortion temperature and good physical properties at high temperature.

In addition, the trimellitic anhydride has excellent dimensional stability, mechanical workability, and chemical resistance because of less curing shrinkage and a high heat distortion temperature.

 In addition, the hexahydrophthalic anhydride has a low dimensional shrinkage and a high heat distortion temperature, and therefore has good dimensional stability and mechanical workability and can be cured for a short time.

 In addition, the benzophenone tracarboxylic anhydride not only has high heat resistance and excellent mechanical properties, but also high heat distortion temperature.

The molded product according to the present invention refers to a form of a product for repairing and reinforcing a concrete structure and specifically a form of a product and may include a plate, a rebar and / or a panel form depending on the form thereof. Quot;

At this time, the components forming the FRP panel composition other than the molded product are impregnated into the molded product, for example, the panel, and the final product is manufactured.

A preferable molded product includes basalt fiber, aramid fiber, glass fiber, carbon fiber, metal fiber, or a mixture of at least one selected from the above, and the amount of use is 70 to 90 parts by weight based on 100 parts by weight of epoxy resin do.

Here, the basalt fiber has chemical properties similar to those of glass fiber. In other words, both glass and basalt are amorphous materials based on silica.

As the use of glass fiber is diversified, the annual average annual production amount reaches about 3 million tons.

In addition, there are various kinds of the above-mentioned glass fiber, but glass fiber (E glass) is a main product when it is based on the amount of water.

 Compared with ordinary glass fibers and basalt fibers, glass fibers are composed of various components and have a density as low as 2.6 to 2.7 g / cm 3. However, the basalt fiber has high strength and high heat resistance, and its function is excellent when it is used as a composite material .

In particular, the basalt fiber can be used for various purposes because of economical efficiency (low cost) required for reinforcing the strength.

Moreover, the basalt fibers are characterized by moderate strength (strength per unit area), high oxidation resistance, electrical insulation, easy processability and raw material procurement, and very low cost.

In this respect, the advantage of carbon fiber is limited to low density and high strength, and it is advantageous to have basalt fiber in comparison with carbon fiber which is expensive and in short supply.

Meanwhile, the aramid fiber according to the present invention is formed into a filament form used for making a fabric in a yarn form, a pulp form used for making a product in a powder form, a yarn thickness can be freely adjusted, There is a staple shape which is subjected to a weak grinding process for use in blending with a yarn. In the present invention, it may be applied to any one of the double-selected shapes as required.

On the other hand, the aramid fiber has a single shape and its length is 1 to 100 mm, preferably 3 to 40 mm, and the diameter or thickness of the cross section is 1 to 50 탆, preferably 10 to 40 탆. The length and diameter or thickness of the aramid can be adjusted to the optimum range according to the quality, durability, tensile strength, flexural strength and toughness of the desired FRP panel composition, and it is preferable to use a single length and single diameter to maintain a single shape Do.

In the aramid, a single shape means that fibers having different lengths or diameters are not mixed, and it is preferable to have a single shape having a single length and a single diameter in terms of dispersibility in the FRP panel composition.

The aramid has an intensity of 8.5 g / d or more, preferably 9.5 g / d or more as measured by a gauge length of 5 mm, an elongation of 60 to 135% as measured by a gauge length of 5 mm, Can be from 75 to 115%.

In the present invention, when the strength and elongation of the aramid are out of the above ranges, the effect of improving the crack resistance of the FRP panel composition, specifically the FRP panel composition as a specific flame retardant, may be weakened.

The aramid may have a relative viscosity (RV) of 2.9 or more, and preferably 3.2 or more. If the relative viscosity (RV) of the aramid is lower than the above range, the strength and abrasion resistance of the fiber itself may deteriorate.

In the present invention, the aramid may have a fineness of 1 to 10 denier, preferably 1.5 to 5 denier.

When the fineness is less than 1 denier, the surface area of the fiber increases and the contact area increases. However, the strength of the fiber itself may be lowered and the dispersibility of the fiber in the FRP panel composition may be lowered. On the other hand, when the fineness is more than 10 denier, the number of fibers per unit area of the FRP panel composition is reduced, and there is a risk that the fragile portion is formed relatively in the FRP panel composition.

In a particular embodiment, the aramid fibers according to the present invention may comprise a dispersed agent coated form.

The aramid coated with the dispersant has an advantage of being excellent in tensile strength, abrasion resistance and durability, and when incorporated into the FRP panel composition, the aramid inherent characteristics as described above are imparted to the FRP panel composition as the flame retardant In addition, the aramid can improve the heat insulating performance due to its low thermal conductivity property.

In another specific embodiment, the aramid fiber according to the present invention may be coated with a coating liquid containing an ester-based lubricant and a nonionic surfactant on its surface, and through such a coating, Can be improved.

Considering the effect of improving the dispersibility and the bonding strength of the aramid, the coating amount of the coating solution is preferably 0.5 to 3% by weight based on the total weight of the aramid, but is not limited thereto.

The filler according to the present invention is intended to improve dimensional stability and abrasion resistance. Any filler having such a purpose may be used, and the filler is preferably used in an amount of 5 to 50 parts by weight based on 100 parts by weight of the epoxy resin.

Preferred fillers are calcium carbonate, talc, alumina or mixtures thereof.

The calcium carbonate and / or talc can be used as an inorganic filler to improve abrasion resistance, improve the compressive strength, mechanical strength and adhesive strength, lower the heat generation at the time of curing and reduce the curing shrinkage rate, Can be adjusted.

In addition, the alumina improves the thermal conductivity, improves the compressive strength, mechanical strength and adhesive strength, and reduces the heat generation at the time of curing, thereby reducing the hardening shrinkage rate and controlling the thermal expansion coefficient.

The adhesion promoter according to the present invention is intended to improve the adhesion and viscosity of the FRP panel composition as a flame retardant material and any conventional adhesion promoter in the art having such a purpose may be used, (3,4-epoxycyclohexyl) ethyltrimethoxysilane, gamma-Glycidoxypropyltrimethoxysilane, gamma-aminopropyltriethoxysilane, gamma-aminopropyltriethoxysilane, gamma-aminopropyltriethoxysilane, N-beta- (aminoethyl) -gamma-aminopropyltrimethoxysilane (N-beta- (Aminoethyl) -gamma-aminopropyltrimethoxysilane) or a mixture of at least one selected from these.

As a specific aspect, the adhesion promoting agent according to the present invention can be selected depending on the user's choice, but preferably the content of each component constituting the adhesion promoting agent is selected based on 100% by weight of the total amount of the adhesion promoting agent, 5 to 40% by weight of gamma-glycidoxypropyltrimethoxysilane, 5 to 30% by weight of gamma-aminopropyltriethoxysilane, and 5 to 30% by weight of N-beta- (epoxycyclohexyl) ethyl trimethoxysilane, Aminoethyl) -gamma-aminopropyltrimethoxysilane in an amount of from 5 to 25% by weight.

Here, the beta - (3,4-epoxycyclohexyl) ethyltrimethoxysilane improves viscosity and adhesion.

In addition, the gamma-glycidoxypropyltrimethoxysilane, gamma-aminopropyltriethoxysilane and N-beta- (aminoethyl) -gamma-aminopropyltrimethoxysilane not only enhance viscosity and adhesion, Slip, wettability, and so on, so that the surface of the composite is smoother and the bonding strength is enhanced.

The preferable amount of the adhesion promoter to be used is 3 to 15 parts by weight based on 100 parts by weight of the epoxy resin.

The flame retardant according to the present invention is intended to provide flame retardancy to a FRP panel composition which is a flame retardant material, and any flame retardant, particularly a flame retardant mixture, may be used for this purpose. Phosphorus flame retardant; Or a mixture thereof. The amount of the epoxy resin to be used is preferably 3 to 20 parts by weight based on 100 parts by weight of the epoxy resin.

When the amount of the flame retardant is less than 3 parts by weight, the flame retardancy of the FRP panel composition can not be satisfied. If the amount of the flame retardant is more than 20 parts by weight, the hardness of the FRP panel composition is increased.

There are no particular restrictions on the flame retardant, metal hydroxide used for the flame retardant mixture specifically, for example, aluminum hydroxide, magnesium hydroxide, etc., but magnesium hydroxide, specifically stearic acid, vinylsilane, fatty acid, It is preferable to use magnesium hydroxide which has been surface-treated and specifically coated.

Specifically, the flame retardant mixture according to the present invention can be used in combination with ammonium pyrophosphoric acid, specifically, liquid ammonium polyphosphoric acid as a flame retardant adjuvant to meet the flame retardancy required by the FRP panel composition, which is a flame retardant material, even with a small amount of flame retardant Can be used.

When the flame retardant is used together with the phosphorus-based flame retardant and / or the surface-treated magnesium hydroxide, the flame retardant effect is increased as compared with the case where only one flame retardant is used alone.

However, the liquid ammonium ammonium pyrophosphate does not have its own flame retarding effect.

Particularly, the phosphorus-based flame retardant used in the flame retardant mixture according to the present invention has excellent flame retardancy but is applied to the FRP panel composition which is a flame retardant material, and when the final product is manufactured, whitening occurs on the surface of the product, , It is desirable to use a small amount of phosphorus flame retardant to overcome such a problem.

Accordingly, in the present invention, the ammonium pyrophosphoric acid can be used in the same manner as the flame-retardant auxiliary agent in order to ensure the desired flame retardancy despite the use of a small amount of the phosphorus flame retardant. It is recommended to use it as a liquid rather than a powder to prevent bleaching phenomenon.

Particularly, the liquid ammonium polyphosphoric acid can prevent the whitening phenomenon of the panel manufactured by using the FRP panel composition, which is a flame retardant material, including the hydrophilic type inhibitor, specifically the panel.

The N- (2-aminoethyl-3-aminopropyl) trimethoxysilane according to the present invention provides coatability to a flame retardant FRP panel composition, (2-aminoethyl-3-aminopropyl) trimethoxysilane, which is common in the art and has such a purpose, may be used. The amount of the N- (2-aminoethyl- 10 to 30 parts by weight.

The antifoaming agent according to the present invention is intended to reduce an increase in the amount of air due to the generation of entrained air, and is not particularly limited as long as it is a conventional antifoaming agent in the art having such an object.

Preferred examples of defoaming agents include mineral oil defoaming agents such as kerosene and paraffin, preservative defoaming agents such as animal and vegetable oils, sesame oil, castor oil and their alkylene oxide adducts, fatty acid defoaming agents such as oleic acid, stearic acid and their alkylene oxide adducts , Fatty acid ester type antifoaming agents such as glycerin monoricinolate, alkenyl succinic acid liquid, sorbitol monolaurate, sorbitol trioleate, and natural wax, polyoxyalkylene ethers, (poly) oxyalkyl ethers, acetylene ethers, Oxyalkylene antifoaming agents such as oxyalkylene alkylphosphoric acid esters, (poly) oxyalkylene alkylamines and (poly) oxyalkylene amides, alcohol-based antifoaming agents such as octyl alcohol, hexadecyl alcohol, acetylene alcohol, Amide-based antifoaming agents such as acrylate polyamines and the like, phosphorus tributyl phosphate, sodium octyl phosphate and the like Metal soap defoaming agents such as acid ester defoaming agents, aluminum stearate, calcium oleate, and the like; dimethyl silicone oils, silicone fats, silicone emulsions, and organic modified polysiloxanes (polyorganosiloxanes such as dimethylpolysiloxane). And silicone-based antifoaming agents such as fluorosilicone oil, etc., but is not limited thereto.

The amount of the defoaming agent to be used is not particularly limited, but is preferably 0.1 to 20 parts by weight based on 100 parts by weight of the epoxy resin.

Dispersant according to the present invention is a dispersion agent for imparting polarity to a FRP panel composition which is a flame retardant material to improve adhesion of constituent components constituting the reinforcing panel composition, to uniformly disperse the compositions, and to improve cold resistance Any dispersant having such a purpose may be used. Preferably, the dispersant is selected from the group consisting of an organic acid, an aromatic oil, an aliphatic oil, a vegetable oil, a castor oil, a cottonseed oil, a mineral oil and a mixture thereof It is good.

The amount of the dispersant to be used is preferably 0.1 to 20 parts by weight based on 100 parts by weight of the epoxy resin.

If the amount of the dispersing agent is less than 0.1 parts by weight, it is hardly effective. If the amount of the dispersing agent is more than 20 parts by weight, the dispersing agent becomes liquid.

The adhesion promoter according to the present invention is intended to make it possible to more easily bond the FRP panel composition, which is a flame retardant material, to a contact surface to which the FRP panel composition is applied. Any adhesion promoting agent conventionally used in the art can be used for this purpose. Hydroxyethyl acryloyl phosphate, hydroxyethyl methacrylate phosphate, or a mixture thereof may be used, and the amount thereof is preferably 1 to 10 parts by weight based on 100 parts by weight of the epoxy resin.

The FRP panel composition as the flame retardant material according to the present invention may further include one or more additives according to the following specific embodiments.

 In a specific embodiment, the FRP panel composition as a flame retardant material according to the present invention comprises 1 to 10 parts by weight of an epoxy resin based on 100 parts by weight of an epoxy resin in order to prevent the other components from being shrunk after being impregnated in a drawn- You can include more festivals.

It is preferable to use a water-reducing agent composed of a polyvinyl acetate-based water-reducing agent, a polyester-based water-reducing agent, and specifically, an unsaturated polyester resin.

In another specific embodiment, the FRP panel composition as a flame retardant material according to the present invention is a flame retardant composition which is prepared by increasing the strength of FRP panel composition to be applied for repair and / or reinforcement, And 5 to 30 parts by weight of a polyamide fiber reinforcing material.

The polyamide fiber reinforcement is added to prevent cracking and toughness of the FRP panel composition.

The polyamide fiber reinforcing material includes polyamide (nylon) 6, polyamide (nylon) 66, or a mixture thereof.

The polyamide is a relatively inactive material and is known to be highly resistant to various oil / inorganic materials including strong bases.

In another specific embodiment, the FRP panel composition according to the present invention, which is a flame retardant material, has excellent adhesion and mechanical properties to prevent cracking and detachment due to external impact, and methyl methacrylate (MMA : Methyl Methacrylate) in an amount of 5 to 15 parts by weight.

Wherein the methyl methacrylate comprises 49 to 70% by weight of a low viscosity methyl methacrylate (MMA) resin having a viscosity of 10 to 1,000 cps, 20 to 50% of high viscosity methyl methacrylate (MMA) having a viscosity of 2,000 to 20,000 cps, And 1 to 10% by weight of a mixture of at least one selected from styrene isoprene styrene (SIS), styrene butadiene rubber (SBR), and styrene butadiene styrene (SBS) is mixed with a methyl methacrylate mixture obtained by mixing ethylene / May be used.

If the content of SIS, SBR and / or SBS is less than 1 wt%, cracks may be caused due to a decrease in impact resistance due to a strong coating film upon application. When the content exceeds 10 wt%, a modified methyl methacrylate resin The viscosity of the composition may be increased, resulting in problems in workability.

In another specific embodiment, the FRP panel composition as the flame retardant material according to the present invention may further contain 5 to 30 parts by weight of an anti-strain agent based on 100 parts by weight of the epoxy resin in order to reduce plastic deformation.

It is recommended that suitable antidegradants include polyethylene, polybutene, impact polystyrene, polypropylene or mixtures thereof.

If the amount of the antidepressant is less than 5 parts by weight, the effect of preventing deformation is insignificant. If the amount of the antifriction agent is more than 30 parts by weight, the FRP panel composition may be used to manufacture products, There is a problem in that mixing with the component is not easy.

In another specific embodiment, the FRP panel composition as a flame retardant material according to the present invention is characterized in that the FRP panel composition according to the present invention has strong adhesion between the product made of the FRP panel composition and the reinforcing face of the concrete structure, water resistance, water permeability, oxygen permeability, , 10 to 50 parts by weight of an acrylic copolymer based on 100 parts by weight of an epoxy resin may be further added to provide a chemical resistance, mechanical properties (elasticity, glass transition temperature, stress relaxation) and the like.

The preferred acrylic copolymers are preferably those formed by polymerization of acrylic monomers, 4-cyanovaleric acid, glycidyl methacrylate (GMA), and are preferably acrylate copolymers copolymer.

At this time, it is preferable to use butyl acrylate (BAM), glycidyl methacrylate (GMA) or a mixture thereof as the acrylic monomer.

In another specific embodiment, the FRP panel composition as the flame retardant material according to the present invention may further include polyvinyl alcohol in order to enhance the initial adhesive strength. The polyvinyl alcohol may improve the dispersibility of the constituents of the FRP panel composition In addition, the initial tacky property is also increased to improve the initial adhesive strength, thereby reducing the defective rate of floating, distortion, and the like.

The amount of the polyvinyl alcohol used is 2 to 10 parts by weight based on 100 parts by weight of the epoxy resin. When the amount of the polyvinyl alcohol is less than 2 parts by weight, the effect is insignificant. When the amount is more than 10 parts by weight, But also the weatherability of the FRP panel composition may be adversely affected.

As another specific embodiment, the FRP panel composition as the flame retardant material according to the present invention is an aminofunctional siloxane which effectively cures at room temperature and provides improved properties such as heat resistance, low temperature performance, chemical resistance, solvent resistance and oil resistance, As shown in FIG.

The amino-containing siloxane is not particularly limited, and for example, aminomethylpolydimethylsiloxane is exemplified, and the amount of the amino-containing siloxane used is preferably 3 to 10 parts by weight based on 100 parts by weight of the epoxy resin.

In another specific embodiment, the FRP panel composition as the flame retardant material according to the present invention may further comprise magnesium silicate in an amount of 1 to 5 parts by weight based on 100 parts by weight of the epoxy resin for extending the life of the FRP panel composition.

Since the magnesium silicate has excellent chemical resistance, chemical resistance and weathering resistance, if it is included in the FRP panel composition which is a flame retardant material, the life of the magnesium silicate is extended due to the above characteristics.

In another specific embodiment, the FRP panel composition as the flame retardant material according to the present invention may further comprise 3 to 10 parts by weight of a diluent based on 100 parts by weight of the epoxy resin.

A preferred diluent is a styrene monomer, vinyl acetate (VAc) or methyl acrylate.

In another specific embodiment, the FRP panel composition as the flame retardant material according to the present invention may further comprise 1 to 10 parts by weight of a mold-release agent based on 100 parts by weight of the epoxy resin.

It is recommended to use zinc stearate as the preferred molding-release agent.

In another specific embodiment, the FRP panel composition as the flame retardant material according to the present invention further comprises 1 to 5 parts by weight of sodium dodecyl stearate based on 100 parts by weight of the epoxy resin in order to ensure permeability while preventing moisture penetration on the surface of the composition If the amount is less than 1 part by weight based on 100 parts by weight of the epoxy resin, the desired moisture permeation preventing function can not be obtained. If the amount exceeds 5 parts by weight, the strength of the composition is lowered.

In another specific embodiment, the FRP panel composition as the flame retardant material according to the present invention comprises 100 parts by weight of an epoxy resin to prevent the occurrence of environmental pollution by preventing the harmful components present on the surface to be bonded, And 5 to 15 parts by weight of dimethyl ammonium chloride on a part basis.

In another embodiment, in order to improve the filling property and durability of the FRP panel composition as a flame retardant material according to the present invention, ammonium nonylphenol ether sulfate is added in an amount of 1 to 5 parts by weight based on 100 parts by weight of an epoxy resin .

In another embodiment, the FRP panel composition according to the present invention may further comprise carboxymethyl cellulose (CMC) in order to increase the viscosity of the composition and improve the adhesion, 1 to 5 parts by weight are preferable.

In another embodiment, the FRP panel composition according to the present invention may further include 1 to 5 parts by weight of fluorinated sodium based on 100 parts by weight of epoxy resin to improve the filling property and durability of the composition. Sodium plays a role primarily as a filler, but secondarily plays a role in improving durability, and the effect can be obtained in the above content range.

In another specific embodiment, the FRP panel composition as the flame retardant material according to the present invention is prepared by mixing lithium carbonate (Li ₂ CO ₃ ) in an amount of 0.1 to 100 parts by weight, based on 100 parts by weight of the epoxy resin, in order to accelerate curing of the composition and to improve compressive strength and flexural strength. To 2 parts by weight.

In another specific embodiment, the FRP panel composition as the flame retardant material according to the present invention is prepared by blending ethylene vinyl acetate with an epoxy resin in an amount of 100 parts by weight based on 100 parts by weight of the epoxy resin so as to exhibit resistance to material separation and excellent adhesion even after high- 1 to 5 parts by weight.

In another specific embodiment, the FRP panel composition as the flame retardant material according to the present invention may further comprise polyethylene oxide in an amount of 1 to 5 parts by weight based on 100 parts by weight of the epoxy resin in order to improve self-leveling.

In another specific embodiment, the FRP panel composition as the flame retardant material according to the present invention may further comprise 1 to 3 parts by weight, based on 100 parts by weight of epoxy resin, of sodium carbonate to improve the water resistance of the composition.

In another specific embodiment, the FRP panel composition as a flame retardant material according to the present invention reduces the intergranular tension of the composition, thereby reducing the amount of water used, improving the work performance, improving the strength, preventing cracking of the FRP panel The polyethyleneglycol is selected from the group consisting of PEG (polyethlene glycol) 400, PEG (polyethlene glycol) 1,000, PEG (polyethlene glycol) 6,000, PEG (polyethyleneglycol ) 20,000, or a combination thereof, and is preferably PEG (polyethlene glycol) 400 in liquid phase or PEG (polyethlene glycol) 1,000 in powder form.

In another specific embodiment, the FRP panel composition as the flame retardant material according to the present invention may further include starch phosphate ester, which is a kind of anion-modified starch, in order to improve the absorbency, permeability and moisture retention of the composition. And 0.1 to 2 parts by weight based on 100 parts by weight of the resin.

In another specific embodiment, the FRP panel composition according to the present invention may further include 10 to 30 parts by weight of the coal tar pitch based on 100 parts by weight of the epoxy resin to improve the waterproof performance of the composition.

In another specific embodiment, the FRP panel composition as a flame retardant material according to the present invention is prepared by adding polymethylsilsesquioxane to 100 weight parts of an epoxy resin in order to improve the adhesion of the composition and to fill the voids of the surface to which the FRP panel composition is applied 1 to 5 parts by weight based on the total weight of the composition.

In another specific embodiment, the FRP panel composition as the flame retardant material according to the present invention comprises polyvinyl pyrrolidone in an amount of 100 wt% of an epoxy resin in order to stably disperse the composition and to absorb and swell the moisture to improve the stability of the composition And may further contain 5 to 20 parts by weight as a basis.

In another specific embodiment, in order to improve the dispersibility of the FRP panel composition as the flame retardant material and prevent the flocculation phenomenon from occurring even after the composition is mixed, the FRP panel composition as the flame retardant material according to the present invention is prepared by mixing sodium rosinate with 100 parts by weight 1 to 3 parts by weight based on the weight of the composition.

In another specific embodiment, the FRP panel composition according to the present invention may further include 1 to 5 parts by weight of a boric acid compound based on 100 parts by weight of the epoxy resin to improve the water resistance and scratch resistance of the composition. Examples of the boric acid compound include orthoboric acid, meta boric acid, tetraboric acid, methyl borate and ethyl borate, and preferably, orthoboric acid is used.

In another specific embodiment, the FRP panel composition according to the present invention may further contain 1 to 5 parts by weight of zinc oxide based on 100 parts by weight of an epoxy resin for accelerating curing and corrosion prevention of the composition, wherein the epoxy resin 100 When the amount is less than 1 part by weight, corrosion resistance is deteriorated. When the amount is more than 5 parts by weight, adhesion is deteriorated due to abrupt reaction of the composition and cracking is not preferable.

In another specific embodiment, the FRP panel composition as a flame retardant material according to the present invention further comprises 1 to 5 parts by weight of trimethylolpropane triacrylate based on 100 parts by weight of the epoxy resin to improve the hardness of the composition and reduce surface contamination can do.

In another specific embodiment, the FRP panel composition according to the present invention may further contain 1 to 5 parts by weight of hydrazine phenyltriazine based on 100 parts by weight of an epoxy resin in order to absorb ultraviolet rays and prevent cracking .

The repair and strengthening method using the FRP panel composition as the flame retardant material according to the present invention having the above-described structure will be described as follows. Hereinafter, the repair and reinforcement method is not limited to the one embodiment of the FRP panel composition, and any repair and reinforcement method using a conventional FRP panel composition in the art may be used.

The repair and strengthening method using FRP panel composition as a flame retardant material according to the present invention is a method of manufacturing a molded product by drawing a basalt fiber, an aramid fiber, a glass fiber, a carbon fiber, a metal fiber, A drawing forming step;

Based on 100 parts by weight of at least one epoxy resin selected from the group consisting of bisphenol A epoxy resin, bisphenol F epoxy resin, novolak epoxy resin, modified dimeric epoxy resin, modified rubber epoxy resin, modified urethane epoxy resin, Anhydride, anhydride, hexahydro-4-methylphthalic anhydride, methylbutenyltetrahydrophthalic anhydride, methylenedomethylene tetrahydrophthalic anhydride, methyltetrahydrophthalic anhydride, methylcyclohexane Dicarboxylic anhydride, succinic anhydride, tetrahydrophthalic anhydride, trimellitic anhydride, hexahydrophthalic anhydride, benzophenone tracarboxylic anhydride, or a mixture thereof. The above acid anhydride curing agents 60 to 120 Ryangbu; 5 to 50 parts by weight of a filler consisting of calcium carbonate, talc, alumina or a mixture thereof; Gamma -aminopropyltrimethoxysilane, gamma-aminopropyltriethoxysilane, N-beta- (aminoethyl) -gamma-aminopropyltrimethoxysilane, beta- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, gamma- Trimethoxysilane or 3 to 15 parts by weight of at least one adhesion promoter selected from the foregoing; 3 to 20 parts by weight of a flame retardant; 10 to 30 parts by weight of N- (2-aminoethyl-3-aminopropyl) trimethoxysilane; 0.1 to 20 parts by weight of an antifoaming agent; 0.1 to 20 parts by weight of a dispersant; And 1 to 10 parts by weight of an adhesion promoter is impregnated into 70 to 90 parts by weight of a molded product obtained by drawing and drawing in a draw-forming step to produce an FRP panel composition as a flame retardant material;

Arranging a base surface of a concrete structure to which the FRP panel composition as the flame retardant material is to be applied;

Attaching and fixing an FRP panel composition to the base surface of the concrete structure;

Sealing the surface of the FRP panel composition, which is the flame retardant material, with the surface of the concrete structure with a sealing material; And

And a step of providing an injection tube and a check tube in the FRP panel composition as the flame retardant material and confirming the filling of the epoxy resin through the check tube while filling the epoxy resin through the injection tube.

Here, the sealing material is not particularly limited as long as it is a sealing material ordinarily used in the art, but silicon, mortar, concrete or a mixture thereof can be preferably used.

The final shape of the product for repair and reinforcement of the concrete structure is determined according to the shape of the draw-up molding.

Hereinafter, the present invention will be described in detail by way of examples. However, the following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[Example 1]

The basalt fiber was pulled out to produce a panel-shaped molding.

Subsequently, 100 g of bisphenol A type epoxy resin, 90 g of dodecylsin anhydride, 25 g of calcium carbonate, 10 g of beta - (3,4-epoxycyclohexyl) ethyltrimethoxysilane, 12 g of magnesium hydroxide surface-coated with stearic acid , 20 g of N- (2-aminoethyl-3-aminopropyl) trimethoxysilane, 10 g of glycerin monoricinolate, 10 g of aromatic oil and 5 g of hydroxyethyl acryloylphosphate were added to the mixture 80 g of a drawn-out molding was impregnated to prepare an FRP panel composition.

[Example 2]

The basalt fiber was pulled out to produce a panel-shaped molding.

Subsequently, 100 g of an epoxy resin mixture comprising 28 g of bisphenol A type epoxy resin, 23 g of bisphenol F type epoxy resin, 22 g of novolac epoxy resin, 15 g of modified dimeric acid epoxy resin, 6 g of modified rubber epoxy resin and 6 g of modified urethane epoxy resin; 16 g of dodecylsuccinic anhydride, 12 g of hexahydro-4-methyl phthalic anhydride, 12 g of methylbutenyltetrahydrophthalic anhydride, 8 g of methylenedomethylene tetrahydrophthalic anhydride, , 4 g of methylcyclohexanedicarboxylic anhydride, 4 g of succinic anhydride, 4 g of tetrahydrophthalic anhydride, 4 g of trimellitic anhydride, 4 g of hexahydrophthalic anhydride and 4 g of benzo 80 g of an acid anhydride curing agent containing 4 g of phenonthracarboxylic anhydride, 25 g of calcium carbonate, 10 g of beta - (3,4-epoxycyclohexyl) ethyltrimethoxysilane, 12 g of magnesium hydroxide surface-coated with stearic acid, 20 g of N- (2-aminoethyl-3-aminopropyl) trimethoxysilane, 10 g of glycerin monoricinolate, 10 g of aromatic oil, When impregnated with a pull-out mold 80g prepared in the pultrusion step to the mixture of phosphate 5g with ethyl acrylate to prepare an FRP panel composition.

[Example 3]

The same procedure as in Example 2 was carried out except that 5 g of an unsaturated polyester resin was further added to the FRP panel composition.

[Example 4]

The same procedure as in Example 2 was carried out except that 15 g of nylon 66 as a reinforcing material for polyamide fibers was further added to the FRP panel composition.

[Example 5]

60% by weight of low viscosity methyl methacrylate resin, 39% by weight of high viscosity methyl methacrylate (MMA) having a viscosity of about 10,000 cps, and styrene isoprene styrene (SIS) were added to the FRP panel composition in the same manner as in Example 2, ) As a polymerization initiator was further added.

[Example 6]

The same procedure as in Example 2 was carried out except that 15 g of a deformation preventing agent containing polybutene was further added to the FRP panel composition.

[Example 7]

The same procedure as in Example 2 was carried out except that 25 g of butyl acrylate was further added to the FRP panel composition.

[Example 8]

The procedure of Example 2 was repeated except that 5 g of polyvinyl alcohol was added to the FRP panel composition.

[Example 9]

The procedure of Example 2 was repeated except that 5 g of aminomethyl polydimethylsiloxane was added.

[Example 10]

The procedure of Example 2 was repeated except that 3 g of magnesium silicate was added.

[Example 11]

The same procedure as in Example 2 was carried out except that 5 g of a diluent composed of a styrene monomer was further added to the FRP panel composition.

[Example 12]

The same procedure as in Example 2 was carried out except that 5 g of zinc stearate was further added to the FRP panel composition.

[Example 13]

The procedure of Example 2 was repeated, except that 3 g of sodium dodecyl stearate was further added.

[Example 14]

The procedure of Example 2 was repeated except that 10 g of dimethylammonium chloride was added.

[Example 15]

The procedure of Example 2 was repeated except that 3 g of ammonium noniphenol ether sulfate was further added.

[Example 16]

The procedure of Example 2 was repeated, except that 3 g of carboxymethyl cellulose was further added.

[Example 17]

The procedure of Example 2 was repeated, except that 3 g of sodium fluoride was further added.

[Example 18]

The same procedure as in Example 2 was carried out except that 1 g of lithium carbonate was further added.

[Example 19]

The procedure of Example 2 was repeated except that 2 g of ethylene vinyl acetate was added.

[Example 20]

The same procedure as in Example 2 was carried out except that 2 g of polyethylene oxide was further added.

[Example 21]

The same procedure as in Example 2 was carried out except that 2 g of sodium kosane was further added.

[Example 22]

Was carried out in the same manner as in Example 2 except that 5 g of polyethylene glycol (liquid PEG 400) was further added.

[Example 23]

The procedure of Example 2 was repeated except that 1 g of starch phosphate ester was added.

[Example 24]

The procedure of Example 2 was repeated, except that 15 g of coal tar pitch was added.

[Example 25]

The procedure of Example 2 was repeated, except that 4 g of polymethylsilsesquioxane was further added.

[Example 26]

The procedure of Example 2 was repeated, except that 7 g of polyvinylpyrrolidone was further added.

[Example 27]

The procedure of Example 2 was repeated, except that 2 g of sodium rosinate was further added.

[Example 28]

The procedure of Example 2 was repeated, except that 3 g of meta boric acid was further added.

[Example 29]

The same procedure as in Example 2 was carried out except that 3 g of zinc oxide was further added.

[Example 30]

The procedure of Example 2 was repeated, except that 3 g of trimethylolpropane triacrylate was further added.

[Example 31]

The procedure of Example 2 was repeated except that 3 g of hydrazine phenyltriazine was further added.

[Example 32]

The procedure of Example 2 was repeated, except that all of Examples 3 to 31 were added to Example 2.

[Experiment]

The mechanical properties of the products prepared using the compositions prepared according to the examples were measured.

 The results are shown in Table 1.

Compressive strength (N / mm ² ) Bending strength (N / mm ² ) Bond strength (N / mm ² ) Flammability Example 1 47. 14.5 1.6 good Example 2 48.3 14.2 1.7 good Example 3 49.8 15.3 1.7 good Example 4 48.9 15.6 1.7 good Example 5 47.8 16.3 1.8 good Example 6 49.2 15.8 1.7 good Example 7 47.5 15.7 1.6 good Example 8 50.3 15.5 1.5 good Example 9 52.4 16.3 1.6 good Example 10 50.3 15.3 1.5 good Example 11 51.3 15.2 1.5 good Example 12 51.4 16.2 1.7 good Example 13 49.2 15.5 1.7 good Example 14 48.3 14.5 1.6 good Example 15 49.3 15.4 1.5 good Example 16 50.3 14.7 1.7 good Example 17 49.7 14.8 1.6 good Example 18 48.8 15.4 1.8 good Example 19 48.8 15.7 1.7 good Example 20 47.9 15.3 1.7 good Example 21 49.1 15.9 1.8 good Example 22 47.6 15.9 1.7 good Example 23 50.4 15.8 1.5 good Example 24 52.3 16.5 1.6 good Example 25 50.4 15.7 1.7 good Example 26 51.5 15.2 1.5 good Example 27 50.4 16.3 1.7 good Example 28 49.5 15.4 1.8 good Example 29 48.4 15.5 1.6 good Example 30 49.7 15.4 1.8 good Example 31 50.1 14.8 1.7 good Example 32 49.8 14.9 1.8 good

As shown in Table 1, the FRP panel compositions prepared according to the examples showed good compressive strength and bending strength, and excellent adhesion and flame retardancy.

As described above, those skilled in the art will understand that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the embodiments described above are all illustrative and not restrictive. The scope of the present invention should be construed as being included in the scope of the present invention without departing from the spirit and scope of the present invention as defined by the appended claims and their equivalents.

Claims (2)

Wherein 20 to 40% by weight of a bisphenol A type epoxy resin, 20 to 40% by weight of a bisphenol F type epoxy resin, 20 to 40% by weight of a novolak epoxy resin, 10 to 30% by weight of a modified dimeric acid epoxy resin %, A modified rubber epoxy resin of 5 to 20% by weight, and a modified urethane epoxy resin of 5 to 20% by weight, based on 100 parts by weight of epoxy,
Dodecylsuccinic anhydride, hexahydro-4-methylphthalic anhydride, methylbutenyltetrahydrophthalic anhydride, methylenedomethylene tetrahydrophthalic anhydride, methyltetrahydrophthalic anhydride, methyltetrahydrophthalic anhydride, Methylcyclohexane dicarboxylic anhydride, succinic anhydride, tetrahydrophthalic anhydride, trimellitic anhydride, hexahydrophthalic anhydride, benzophenone tracarboxylic anhydride, or the like. 60 to 120 parts by weight of at least one acid anhydride curing agent selected from
70 to 90 parts by weight of a molded product obtained by drawing basalt fiber, aramid fiber, glass fiber, carbon fiber, metal fiber or a mixture of at least one selected from the foregoing;
5 to 50 parts by weight of a filler consisting of calcium carbonate, talc, alumina or a mixture thereof;
Gamma -aminopropyltrimethoxysilane, gamma-aminopropyltriethoxysilane, N-beta- (aminoethyl) -gamma-aminopropyltrimethoxysilane, beta- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, gamma- Trimethoxysilane or 3 to 15 parts by weight of at least one adhesion promoter selected from the foregoing;
3 to 20 parts by weight of a flame retardant;
10 to 30 parts by weight of N- (2-aminoethyl-3-aminopropyl) trimethoxysilane;
0.1 to 20 parts by weight of an antifoaming agent;
0.1 to 20 parts by weight of a dispersant; And
1 to 10 parts by weight of an adhesion promoting agent is added to an FRP panel composition which is a flame retardant material,
Further comprising 1 to 5 parts by weight of ammonium noniphenol ether sulfate based on 100 parts by weight of the epoxy resin,
Further comprising 1 to 5 parts by weight of carboxymethyl cellulose based on 100 parts by weight of an epoxy resin,
Further comprising 1 to 5 parts by weight, based on 100 parts by weight of the epoxy resin, sodium fluoride,
Further comprising 0.1 to 2 parts by weight of lithium carbonate based on 100 parts by weight of the epoxy resin,
Further comprising 1 to 3 parts by weight based on 100 parts by weight of epoxy resin,
Further comprising starch phosphate ester in an amount of 0.1 to 2 parts by weight based on 100 parts by weight of an epoxy resin,
Further comprising 10 to 30 parts by weight of a coal tar pitch based on 100 parts by weight of an epoxy resin,
Further comprising polymethylsilsesquioxane in an amount of 1 to 5 parts by weight based on 100 parts by weight of an epoxy resin,
Further comprising 5 to 20 parts by weight of polyvinylpyrrolidone based on 100 parts by weight of the epoxy resin,
Further comprising sodium rosinate in an amount of 1 to 3 parts by weight based on 100 parts by weight of the epoxy resin,
Further comprising 1 to 5 parts by weight of a boric acid compound based on 100 parts by weight of an epoxy resin,
Further comprising 1 to 5 parts by weight of zinc oxide based on 100 parts by weight of the epoxy resin,
Further comprising trimethylolpropane triacrylate in an amount of 1 to 5 parts by weight based on 100 parts by weight of an epoxy resin,
Wherein the flame retardant material further comprises hydrazine phenyltriazine in an amount of 1 to 5 parts by weight based on 100 parts by weight of an epoxy resin. A drawing-forming step of drawing a molded product obtained by drawing basalt fiber, aramid fiber, glass fiber, carbon fiber, metal fiber or a mixture of at least one selected from the foregoing, to produce a molded product;
Wherein 20 to 40% by weight of a bisphenol A type epoxy resin, 20 to 40% by weight of a bisphenol F type epoxy resin, 20 to 40% by weight of a novolac epoxy resin, 10 to 30% by weight of a modified dimeric acid epoxy resin, , 5 to 20% by weight of a modified rubber epoxy resin, and 5 to 20% by weight of a modified urethane epoxy resin, based on 100 parts by weight of an epoxy resin containing at least one of dodecylsin anhydride, hexahydro- Methyl butenyl tetrahydrophthalic anhydride, methylenedomethylene tetrahydrophthalic anhydride, methyltetrahydrophthalic anhydride, methylcyclohexanedicarboxylic anhydride, succinic anhydride, tetrahydrofuran Tallow anhydride, trimellitic anhydride, hexahydrophthalic anhydride, benzophenone Carboxylic anhydride or 60-120 parts by weight of at least one anhydride curing agent selected from the foregoing; 5 to 50 parts by weight of a filler consisting of calcium carbonate, talc, alumina or a mixture thereof; Gamma -aminopropyltrimethoxysilane, gamma-aminopropyltriethoxysilane, N-beta- (aminoethyl) -gamma-aminopropyltrimethoxysilane, beta- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, gamma- Trimethoxysilane or 3 to 15 parts by weight of at least one adhesion promoter selected from the foregoing; 3 to 20 parts by weight of a flame retardant; 10 to 30 parts by weight of N- (2-aminoethyl-3-aminopropyl) trimethoxysilane; 0.1 to 20 parts by weight of an antifoaming agent; 0.1 to 20 parts by weight of a dispersant; And 1 to 10 parts by weight of an adhesion promoter, 1 to 5 parts by weight of ammonium noniphenol ether sulfate based on 100 parts by weight of an epoxy resin, and carboxymethyl cellulose is added to 1 to 5 parts by weight Further comprising sodium fluoride in an amount of 1 to 5 parts by weight based on 100 parts by weight of the epoxy resin and further comprising lithium carbonate in an amount of 0.1 to 2 parts by weight based on 100 parts by weight of an epoxy resin, Wherein the starch phosphate ester is further contained in an amount of 0.1 to 2 parts by weight based on 100 parts by weight of the epoxy resin and the pitch of the coal tar is 10 to 30 parts by weight based on 100 parts by weight of the epoxy resin. Further comprising polymethylsilsesquioxane in an amount of 1 to 5 parts by weight based on 100 parts by weight of the epoxy resin Further comprising polyvinylpyrrolidone in an amount of 5 to 20 parts by weight based on 100 parts by weight of the epoxy resin, wherein the sodium rosinate is further added in an amount of 1 to 3 parts by weight based on 100 parts by weight of the epoxy resin, 1 to 5 parts by weight based on 100 parts by weight of an epoxy resin, and further comprising 1 to 5 parts by weight of zinc oxide based on 100 parts by weight of an epoxy resin, wherein trimethylolpropane triacrylate is used in an amount of 1 to 5 parts by weight And 70 to 90 parts by weight of a molded product obtained by pultrusion-drawing in a drawing-forming step, to further prepare a FRP panel composition as a flame retardant material A FRP panel composition;
Arranging a base surface of a concrete structure to which the FRP panel composition as the flame retardant material is to be applied;
Attaching and fixing an FRP panel composition as a flame retardant material to a base surface of the concrete structure;
Sealing the surface of the FRP panel composition, which is the flame retardant material, with the surface of the concrete structure with a sealing material; And
And inserting an injection pipe and a check pipe into the FRP panel composition as the flame retardant material and confirming the filling of the epoxy resin through the check pipe while filling the epoxy resin through the injection pipe.