KR101641302B1 - Manufacturing method of composite panel including artificial marble - Google Patents

Abstract

The present invention provides a process for preparing a surface layer composition comprising: a) preparing a surface layer composition comprising 100 to 500 parts by weight of aluminum hydroxide, 100 to 500 parts by weight of an initiator, 0.1 to 3 parts by weight of a crosslinking agent and 0.1 to 3 parts by weight of a coupling agent, b) applying the surface layer composition to one or both sides of the base panel; And c) polymerizing the base resin by heating to 20 to 150 캜. The present invention relates to a method for producing a composite panel comprising an artificial marble.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a composite panel including an artificial marble,

The present invention relates to a method of manufacturing a composite panel including artificial marble, and more particularly, to a method of manufacturing a composite panel including an artificial marble that improves simple surface patterns of existing panels and achieves high strength and light weight will be.

Recently, it has become common to apply natural stone panels such as granite and marble to the walls and floors of major buildings such as department stores, office buildings, and large shopping malls due to the improvement of living standards and the higher quality of building materials.

These natural stone panels have good visual durability and durability. However, they have a high cost of the marble itself and the construction is not universal, and the weight is heavy, which makes handling for construction very inconvenient and in case of partial damage, There is a problem that it is difficult to repair or replace.

Therefore, the construction cost is much higher than other building materials. In addition, when the building is attached to a wall of a building, the use of the building is limited due to the weakness of the adhesion due to its weight.

Further, in order to improve the load of marble, in the case of the conventional marble composite tile, due to the characteristics of the ceramic tile substrate used as the substrate, it is difficult to increase the size and mass productivity due to high load. It is very difficult to enlarge the product.

In order to solve the problem of such natural stone, a marble composite panel product having a combination of natural marble and ceramic tile has been proposed. Compared with natural marble itself, the composite panel product achieved somewhat lightweight properties and improved the workability somewhat.

Korean Patent Laid-Open No. 10-2006-0004385 discloses a marble comprising a natural marble and a reinforcing member attached to one side of the natural marble, wherein the reinforcing member is made of a liquid mortar or a foamed synthetic resin containing cement, Panel is disclosed.

Korean Patent Laid-Open No. 10-2002-0041407 discloses a composite tile in which a natural stone layer and a support sheet layer are bonded by an adhesive, wherein the support sheet comprises silica, cement, sand, cellulose fiber, stabilizer, ≪ / RTI > is disclosed.

In addition to those disclosed in the above documents, many panels incorporating a base on natural stone have been introduced, but the problem of occurrence of a step after construction has not been solved, and the inconvenience of the workability is maintained. In addition, the manufacturing cost is increased by using natural stone, and since the hardness of the natural stone is high, it is still fragile due to impact, and the weight is heavy, which makes transportation and construction difficult.

Korea 10-2006-0004385 (January 12, 2006) Korea 10-2002-0041407 (June 01, 2002)

SUMMARY OF THE INVENTION The present invention has been conceived in order to solve the above-mentioned problems, and it is an object of the present invention to provide a base panel, a surface layer composition comprising an acrylic resin on one surface or both surfaces thereof, And to provide a method for manufacturing a composite panel including an artificial marble capable of improving the pattern and achieving high strength and light weight.

The present invention relates to a method for producing a composite panel comprising artificial marble.

One aspect of the present invention is

a) preparing a surface layer composition comprising a base resin, aluminum hydroxide, an acrylate oligomer, a crosslinking agent, an initiator and a coupling agent;

b) applying the surface layer composition to one or both sides of the base panel; And

c) heat curing step;

The present invention relates to a method of manufacturing a composite panel including an artificial marble including a synthetic marble.

Another aspect of the present invention is

a) preparing a surface layer composition comprising a base resin, aluminum hydroxide, an acrylate oligomer, a crosslinking agent, and an initiator;

b) curing the surface layer composition to produce an artificial marble panel;

c) applying the surface layer composition to one or both sides of the base panel and bonding the artificial marble panel; And

d) heat curing step;

The present invention relates to a method of manufacturing a composite panel including an artificial marble including a synthetic marble.

The surface layer composition may be prepared by mixing 100 to 500 parts by weight of aluminum hydroxide, 1 to 5 parts by weight of an initiator, 0.1 to 3 parts by weight of a crosslinking agent, and 0.1 to 3 parts by weight of a coupling agent, based on 100 parts by weight of the base resin. Section.

In the present invention, the base resin may be composed of a monomer and a polymer resin, and is not limited to the type that can be used in ordinary artificial marble. Examples of the monomers that can be used include methacrylates such as methyl methacrylate, butyl methacrylate, hexyl methacrylate, hydroxymethyl methacrylate and the like, and acrylates such as ethyl acrylate, butyl acrylate, hexyl acrylate and the like And the like. Any one or two or more of them may be used in combination.

As the polymer resin in the present invention, any one or two or more selected from among acrylic resin, unsaturated polyester resin, epoxy resin, polyvinyl chloride, polystyrene, polycarbonate and polyethylene terephthalate may be used, It is preferable to use polymethyl methacrylate.

In the present invention, examples of the initiator include, but are not limited to, peroxystyrene initiators, redox-based initiators, and azo-based initiators. Examples of the initiator include peroxyketal di-t-butyl peroxide, Acyl peroxide, peroxy ester, and hydroperoxide, but is not limited thereto.

In the present invention, the acrylate oligomer may be any one or two or more selected from urethane acrylate oligomer, epoxy acrylate oligomer, and unsaturated polyester oligomer.

In the present invention, the crosslinking agent is not limited as long as it is a curable multifunctional monomer or oligomer. Examples thereof include ethylene glycol dimethacrylate, ethylene glycol trimethacrylate, trimethylolpropane trimethacrylate, triaryl cyanate, Methyl methacrylate, ethyl methacrylate, methyl methacrylate, methyl methacrylate, methyl methacrylate, ethyl methacrylate, butyl methacrylate,

In the present invention, the coupling agent enhances the surface texture of the artificial marble, the scratches and the like, and further improves the hardness. Examples of the coupling agent include beta-3,4-epoxycyclohexylethyltrimethoxysilane, gamma- Methacryloxypropyltrimethoxysilane, gamma-aminopropyltrimethoxysilane, 3- (trimethoxycylyl) propylmethacrylate, vinyltrimethoxysilane, vinyltriethoxysilane, vinyltriethoxysilane, Lt; / RTI > silane, and < RTI ID = 0.0 >

In the present invention, one or more additives 1 to 3 selected from antimicrobial agents, pigments, dyes, ultraviolet absorbers, flame retardants, fluidizers, polymerization inhibitors, antioxidants, chain transfer agents and antifoaming agents may be added to 100 parts by weight of the composition constituting the surface layer. 50 parts by weight.

In the present invention, the base panel may include one or more selected from inorganic materials, synthetic resin materials, wood, and metal materials.

In another embodiment of the present invention, the above-mentioned production methods further include a halogenated unsaturated polyester in the surface layer. The halogenated unsaturated polyester of the present invention has the following formula (1) 0.1 to 3 parts by weight based on 100 parts by weight of the composition.

[Chemical Formula 1]

(Wherein n is an integer of 1 to 100)

The composite panel including the artificial marble according to the present invention can improve the simple surface pattern of the base panel while at the same time the weak point of artificial marble can compensate for the weak strength and light weight which does not have natural stone can be attained at the same time, Can be greatly reduced.

1 shows a cross section of a multi-layered artificial marble produced according to an embodiment of the present invention.
Figures 2-3 illustrate the surface of a multi-layered artificial marble made according to one embodiment of the present invention.

Hereinafter, a method of manufacturing a composite panel including artificial marble according to the present invention will be described in detail with reference to specific examples or examples. It should be understood, however, that the invention is not limited thereto and that various changes and modifications may be made without departing from the spirit and scope of the invention.

Unless otherwise defined, all technical and scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Also, the singular forms as used in the specification and the appended claims are intended to include the plural forms as well, unless the context clearly indicates otherwise.

A method of manufacturing a composite panel including artificial marble according to the present invention comprises:

a) preparing a surface layer composition comprising 100 to 500 parts by weight of aluminum hydroxide, 1 to 5 parts by weight of an initiator, 0.1 to 3 parts by weight of a crosslinking agent and 0.1 to 3 parts by weight of a coupling agent based on 100 parts by weight of the base resin;

b) applying the surface layer composition to one or both sides of the base panel; And

c) polymerizing the base resin by heating to 20 to 150 캜;

. ≪ / RTI >

First, a surface layer composition is prepared by mixing base resin, aluminum hydroxide, initiator, crosslinking agent and coupling agent to form a surface layer.

The base resin may be composed of a monomer and a polymer resin. The base resin encapsulates an inorganic filler such as aluminum hydroxide, which forms a skeleton of the surface layer, and binds the whole together with a crosslinking agent. In addition, elasticity and tensile strength are imparted when artificial marble is formed, and the viscosity of the entire composition is controlled by controlling the addition amount.

As the polymer resin in the base resin according to the present invention, any one or two or more selected from acrylic resin, unsaturated polyester resin, epoxy resin, polyvinyl chloride, polystyrene, polycarbonate and polyethylene terephthalate may be used, It is preferable to use an acrylic resin, most preferably a polymethyl methacrylate resin because it is advantageous in terms of transparency of the artificial marble and reactivity between the monomers.

Examples of the monomers that can be used in the present invention include methacrylates such as methyl methacrylate, butyl methacrylate, hexyl methacrylate, hydroxymethyl methacrylate and the like or methacrylates such as ethyl acrylate, butyl acrylate, hexyl acrylate And the like, and any one or two or more of them may be used in combination.

The base resin is most preferably a mixture of polymethylmethacrylate (PMMA) and methylmethacrylate (MMA) in an acrylic resin. The mixing ratio of PMMA and MMA is preferably 5 to 50% by weight of PMMA and 95 to 50% by weight of MMA, more preferably 15 to 30% by weight of PMMA and 70 to 85% by weight of MMA. When the mixing ratio of PMMA and MMA is out of the above range, the viscosity is greatly changed and the composition is difficult to be uniformly mixed, and the workability may be significantly lowered.

In the present invention, the aluminum hydroxide (Al (OH) ₃ ) is included as an inorganic filler in the surface layer, so that a transparent and beautiful appearance close to natural stone can be provided to the artificial marble. However, in the present invention, only aluminum hydroxide is limited, but any inorganic filler other than aluminum hydroxide may be used, such as calcium carbonate, calcium aluminate, silica, and alumina, which are commonly used in the art . In addition to the above-mentioned aluminum hydroxide, the exemplified inorganic powders may be used singly or in combination of two or more kinds.

In the present invention, the aluminum hydroxide preferably comprises 100 to 500 parts by weight, preferably 200 to 300 parts by weight, based on 100 parts by weight of the base resin. If the amount of aluminum hydroxide added is less than 100 parts by weight, the aluminum hydroxide may not be mixed uniformly due to the difference in specific gravity, and if it is added in an amount of more than 500 parts by weight, molding and workability may be significantly deteriorated.

The above-mentioned aluminum hydroxide, calcium carbonate or an inorganic filler containing them preferably has an average particle diameter of 2 to 20 占 퐉 because of excellent mixing property and formability. When the average particle diameter is less than 2 탆, the specific surface area is widened to increase the viscosity of the mixture. As a result, the moldability can be greatly reduced. If the average particle diameter is more than 20 탆, the filler sags during molding, The property may be greatly deteriorated.

In the present invention, the initiator is for proceeding polymerization of the base resin and the cross-linking agent, and the kind thereof is not limited as long as it is a usual radical initiator. Examples of the initiator include 1,1-bis (t-butylperoxy) -3,5,5-trimethylcyclohexane, 1,1-bis (t-butylperoxy) (t-butylperoxy) octane, n-butyl-4,4-bis (t-butylperoxy) valerate and 2,2- (T-butylperoxy-m-isopropyl) benzene, 2,5-dimethyl-2,5-bis (t-butylperoxy ) Hexane and 2,5-dimethyl-2,5-bis (t-butylperoxy) hexyne-3, acetyl peroxide, isobutyl peroxide, octanoyl peroxide, lauroyl peroxide, 3,5-trimethylhexanoyl peroxide, benzoyl peroxide, 2,4-dichlorobenzoyl peroxide and m-toluyl peroxide, t-butyl peroxyacetate, t-butyl peroxyisobutyl peroxide Butyl peroxide, t-butyl peroxy-2-ethyl hexanoate, t- Butyl peroxy isobutyrate, 2,5-dimethyl-2,5-di (benzoyl peroxy) hexane, t-butyl peroxymaleic acid, t-butyl peroxybenzoate, -Butyl peroxyisopropyl carbonate and cumyl peroxyoctate, and a peroxy ester such as t-butyl-hydroperoxide, diisopropylbenzene, hydroperoxide, 2,5-dimethylhexane-2,5-dihydroperoxide Oxides, and hydroperoxides such as 1,1,3,3-tetramethylbutyl hydroperoxide. However, the present invention is not limited thereto. The radical initiators exemplified can be used singly or in combination.

The initiator may be used in an amount of 1 to 5 parts by weight, preferably 2 to 3 parts by weight, based on 100 parts by weight of the base resin. When included in the above range, the curing rate of the surface layer or the back layer can be kept constant, and as a result, the workability can be improved.

The cross-linking agent includes an unsaturated group capable of copolymerization in a molecule, and is capable of forming a polymer cross-linking by polymerizing with a monomer. The cross-linking agent used in the present invention is not particularly limited, It is preferable to use a multifunctional monomer having a double bond capable of crosslinking with the base resin.

As the crosslinking agent, for example, ethylene glycol dimethacrylate, ethylene glycol trimethacrylate, trimethylolpropane trimethacrylate, triaryl cyanate, diaryl phthalate, aryl methacrylate and triethylene glycol dimethacrylate It is preferable to use one or two or more selected.

The crosslinking agent is preferably used in an amount of 0.1 to 3 parts by weight, preferably 1 to 2 parts by weight based on 100 parts by weight of the base resin. If it is used in an amount of less than 0.1 part by weight, the cross-linking property between the monomers acting as the binder in the artificial marble is weak, so that the solvent resistance, heat resistance, mechanical properties (surface strength, impact resistance, etc.) Also, when it exceeds 5 parts by weight, the stretchability is lowered and broken easily, so that the workability in the process of various interior is poor.

The coupling agent refers to a material having both hydrophobic functional groups capable of binding with resins in a molecule and hydrophilic functional groups capable of binding to inorganic fillers at the same time. Examples of such coupling agents include beta-3,4-epoxycyclohexylethyltrimethoxysilane, gamma-glycidoxypropyltrimethoxysilane, gamma-methacryloxypropyltrimethoxysilane, gamma-aminopropyltrimethoxysilane , Vinyltrimethoxysilane, vinyltrimethoxysilane, vinyltriethoxysilane, hydroxyethyl methacrylate acid phosphate, and the like can be preferably used. However, But the present invention is not limited thereto.

The coupling agent is contained in an amount of 0.1 to 3 parts by weight, preferably 0.5 to 1.5 parts by weight based on 100 parts by weight of the base resin. If the amount is more than 3 parts by weight, the viscosity of the base resin may be lowered and the effect of improving the physical properties may be insufficient.

In the present invention, the surface layer composition may further include one or more additives selected from antimicrobial agents, pigments, dyes, ultraviolet absorbers, flame retardants, fluidizers, polymerization inhibitors, antioxidants, chain transfer agents and antifoaming agents.

The antimicrobial agent is for imparting antimicrobial properties to the artificial marble, and is not limited to any inorganic or organic antimicrobial agent commonly used in the art. As the above-mentioned inorganic antibacterial agent, for example, zinc oxide powder; A mixture of zirconium phosphate and silver oxide / zinc oxide (e.g., Novaron AGZ-330 (hereinafter referred to as Novaron), trade name, manufactured by Toagosei Co., Tokyo, Japan); A mixture of zeolite and silver oxide / zinc oxide (e.g., trade name Zeomic manufactured by Shinanen Zeomic Co., Ltd., Nagoya, Japan); A mixture of calcium phosphate and zinc oxide (e.g., Apacider, trade name, manufactured by Sangi, Tokyo, Japan) can be used. When zinc oxide is used alone, its average particle diameter is preferably 0.2 to 100 mu m, more preferably 0.2 to 50 mu m, particularly preferably 0.2 to 10 mu m.

The dye can be an organic or inorganic dye, and is not particularly limited as long as it is a material commonly used in the art as a coloring means. In addition to general inorganic or organic pigments, various kinds of pearl pigments such as gold, silver, copper, aluminum, and pearl can be used as pigments.

In addition, a phenyl salicylate-based, benzophenone-based, benzotriazole-based, nickel-inducing or radical scavenger-based ultraviolet absorber; Halogen-based, phosphorus-based or inorganic-metal flame retardants; Fluidizing agents such as polycarboxylic acid type, naphthalene type, and melamine type; Catechol-based or hydroquinone-based polymerization inhibitors; Phenolic, amine, quinone, sulfur or phosphorus antioxidants; Silicone based or non-silicone based antifoaming agents; And a bifunctional chain transfer agent such as a diol or a diamine.

The additive may be added in an amount of 1 to 50 parts by weight based on 100 parts by weight of the total surface layer composition. In this case, the addition amount is an amount to be added to 100 parts by weight of the surface layer composition, and may be an addition amount of one or more of the various materials listed above.

Also, in order to solve the problems of thixotropy, thermal degradation performance and discoloration due to long-term use, 0.1 to 3 parts by weight of a halogenated unsaturated polyester of the following formula (1) may be added to the surface layer in relation to 100 parts by weight of the base resin.

[Chemical Formula 1]

(Wherein n is an integer of 1 to 100)

The halogenated unsaturated polyester is added in order to control the specific gravity of the base resin constituting the surface layer and to solve the thixotropic property, the thermal degradation performance and the discoloration due to the long-term use. It is considered that the bromine group present in the polymer causes interfacial delamination And the effect of improving the elongation can be obtained while maintaining the strength by the vinyl group contained in the polymer terminal.

In the present invention, the halogenated unsaturated polyester is preferably contained in an amount of 0.1 to 3 parts by weight, preferably 0.5 to 1 part by weight, based on 100 parts by weight of the entire base resin. When the amount is less than 0.1 part by weight, improvement effects such as thixotropy, heat resistance, and discoloration resistance are not exhibited. If the amount is more than 3 parts by weight, strength deterioration due to excessive addition of vinyl groups may occur.

The composite panel according to the present invention may further comprise a polyvinylidene difluoride-based elastomer in addition to the halogenated unsaturated polyester. The elastomer is a material having intermediate properties between plastic and rubber, and imparts heat resistance, abrasion resistance and molding processability to artificial marble.

It is important for the elastomer to control the compatibility and the size of the dispersed phase in order to manifest the effect. The elastomer used in the present invention may have an average particle diameter of 1 占 퐉 or less, preferably 300 to 500 nm, to improve heat resistance, wear resistance and moldability.

The amount of the elastomer is preferably 0.01 to 1 part by weight based on 100 parts by weight of the base resin. If it is contained in an amount of less than 0.01 part by weight, the aforesaid physical property improving effect can not be exhibited. If the amount exceeds 1 part by weight, the mechanical strength of the surface layer may be lowered.

The surface layer composition may be prepared by mixing in a reactor. At this time, the reactor is not limited to the type as long as it is commonly used in the art, and it is more preferable that the reactor is provided with a stirrer, a thermometer, a vacuum deaerator, and the like.

In the present invention, the base panel may include a material such as an inorganic material, a synthetic resin material, a wood material, and a metal material. The base panel may be a board having the materials alone, or a board having two or more kinds of materials mixed.

The base panel may include at least one selected from inorganic materials such as cement, concrete, calcium silicate, magnesium, vermiculite, gypsum, porcelain and porcelain.

Examples of the synthetic resin material include polyvinyl chloride, polyethylene, polypropylene, polyester, unsaturated polyester, polyamide, polystyrene, polyurethane, polycarbonate, acrylonitrile-butadiene-styrene copolymer (ABS) (Polylactic acid).

The wood may also include at least one member selected from the group consisting of, for example, plywood, floor board, sawdust, Medium Density Fiberboard (MDF), high density fiberboard (HDF) and veneer.

As the metallic material, metals such as aluminum (Al), iron (fe), copper (Cu), and tin (Sn) may be used. These metals may be contained singly or in combination of two or more metals. In the case of a base panel formed of a metal, it may be a general board shape, but it may have a honeycomb form.

In the present invention, the base panel preferably has a thickness of 0.1 to 30 mm, and preferably 0.5 to 3.0 mm, which is advantageous from the viewpoints of handling, light weight, workability and other physical properties while maximizing the effect of the composite panel , But the present invention is not limited thereto.

The method for producing a composite panel according to the present invention will be described in detail. First, the base resin is put into a reactor and then melted at 60 to 70 ° C for 2 hours or more while supplying nitrogen or air to lower the viscosity to such an extent that stirring is possible. Next, an inorganic filler such as aluminum hydroxide (surface layer), an initiator, a crosslinking agent, a coupling agent, and other additives are added and mixed and vacuum degassed for 5 minutes or longer.

Thereafter, a base panel may be prepared in a mold and the surface layer composition may be applied to the surface of the base panel. In addition to the above methods, (1) a surface layer composition is applied to a forming frame in which a base panel is not prepared, and then thermosetting is performed to produce a board-shaped artificial marble panel; (2) a thin layer of the surface layer composition is applied on the surface of the artificial marble; Or by attaching a base panel to the surface to which the surface layer composition is applied and curing and adhering. Further, it is possible to apply to one side of the base panel, but it is also possible to apply to both sides of the panel, and the present invention is not limited thereto.

After applying the compositions to a mold, the surface layer composition is cured through heat treatment. The heat treatment may vary the temperature depending on the type of use of the initiator. For example, in the case of a redox-type initiator, it may proceed at room temperature (20 to 50 ° C) Good. Although the type of the initiator is not limited in the present invention, it is preferable to proceed at 70 to 150 캜 because the heat polymerization method is advantageous in terms of physical properties and productivity compared with an economical aspect. In addition, although the curing time is not limited in the present invention, it is preferable to carry out curing within about 1 hour. After hardened artificial marble is demolded from the mold, it is possible to perform visual inspection and mechanical performance inspection of the product.

Hereinafter, the method for producing a composite panel according to the present invention will be described in more detail with reference to Examples and Comparative Examples. However, the following examples and comparative examples are merely examples for explaining the present invention in more detail, and the present invention is not limited by the following examples and comparative examples.

The physical properties of the composite panel produced through Examples and Comparative Examples were measured as follows.

(Tensile strength, elongation and tensile modulus)

Tensile strength was measured by applying ASTM D638 measurement method.

(Flexural modulus and flexural strength)

The flexural modulus was measured by applying ASTM D790 measurement method.

(Barcol hardness)

Barcol hardness was measured by applying ASTM D2583 measurement method.

(Rockwell Hardness)

The Rockwell hardness was measured by applying the ASTM D785 measurement method.

(Pencil hardness)

The pencil hardness was measured by applying the KS D6711 measurement method.

(Izod impact strength)

The Izod impact strength was measured by applying the ASTM D256 measurement method.

(Absorption rate)

The absorption rate was measured by applying ASTM D570 measurement method.

(Load deformation temperature (1.82 MPa))

Load deflection temperature was measured by applying ASTM D648 measurement method.

(Thermal expansion)

Thermal expansion was measured by applying KS M3015 measurement method.

(Example 1)

250 g of a base resin composed of a mixture of 20% by weight of polymethylmethacrylate (PMMA, Atopia, AITOGLAS) and 80% by weight of methyl methacrylate (MMA, LGMMA), 30 g of aluminum hydroxide powder (average particle diameter 20 μm, CHALCO, , 6.9 g of lauroyl peroxide as an initiator, 3.5 g of trimethylolpropane trimethacrylate as a crosslinking agent, and 3.0 g of a coupling agent (hydroxyethyl methacrylate excipient phosphate) were added to a stirrer, and the mixture was stirred at 25 ° C. and 300 rpm To prepare a surface layer composition.

Further, a chip for making a pattern on the surface layer composition , 86.6 g of an additive containing 6 g of defoamer (BYK-077 (BYK Japan KK), 5.6 g of ultraviolet absorber (Tinuvin 1130, Ciba), 10 g of pigment and 5 g of chain transfer agent (butylmercaptan) was added.

Next, a surface layer composition was applied to the top of the aluminum coil through a cotta portion to a thickness of 4 mm while continuously introducing aluminum coil (Koryo Aluminum Co., Ltd., thickness 0.5 mm, width 800 mm 2, weight 6,000 kg) into a steel belt. At this time, the speed of the steel belt was 4.0 m / min. The coated composition was cured by heating in an oven controlled at a temperature of 100 ° C for 20 minutes to complete a two-layer composite panel. The physical properties of the finished composite panel were measured and are shown in Table 1.

(Example 2)

A surface layer composition having the same composition as in Example 1 was prepared, and then the composition was applied on a steel belt with a polyvinyl alcohol (POVAL FILM (VF-KL), Kuraray, 30 탆) Respectively. The coated composition was heat-treated in an oven controlled at a temperature of 100 캜 for 20 minutes to prepare artificial marble. The surface layer composition was applied to the surface of the manufactured artificial marble to a thickness of 0.1 mm, and then an aluminum panel was attached. Then, heat was applied at 30 DEG C for 30 minutes to perform a curing reaction to complete a two-layer composite panel. The physical properties of the finished composite panel were measured and are shown in Table 1.

(Example 3)

A two-layer artificial marble was prepared in the same manner as in Example 1 except that 1 part by weight of a halogenated unsaturated polyester (weight average molecular weight 10,000) was further added to the surface layer. The properties of the finished marble were measured and reported in Table 1.

(Example 4)

A two-layer artificial marble was prepared in the same manner as in Example 1, except that 0.5 parts by weight of a polyvinylidene difluoride-based elastomer (weight average molecular weight: 3,000, average particle diameter: 500 nm) was further added to the surface layer. The properties of the finished marble were measured and reported in Table 1.

(Example 5)

1 part by weight of a halogenated unsaturated polyester (weight average molecular weight 10,000) and 0.5 part by weight of a polyvinylidene difluoride elastomer (weight average molecular weight: 3,000, average particle diameter: 500 nm) were added to the surface layer in the same manner as in Example 1 The artificial marble of two layers was prepared. The properties of the finished marble were measured and reported in Table 1.

(Example 6)

A two-layer artificial marble was prepared in the same manner as in Example 1, except that 0.5 part by weight of a polyvinylidene difluoride-based elastomer (weight average molecular weight: 3,000, average particle diameter: 2 m) was further added to the surface layer. The properties of the finished marble were measured and reported in Table 1.

(Comparative Example)

A surface layer composition having the same composition as in Example 1 was prepared, and then the composition was applied on a steel belt with a polyvinyl alcohol (POVAL FILM (VF-KL), Kuraray, 30 탆) Respectively. The coated composition was heat-treated in an oven controlled at a temperature of 100 캜 for 20 minutes to prepare artificial marble. The physical properties of the finished artificial marble were measured and reported in Table 1.

[Table 1]

Claims (10)

A process for preparing a composition comprising a) a base resin, an inorganic filler, an acrylate oligomer, a cross-linking agent, an initiator and at least one of beta-3,4-epoxycyclohexylethyltrimethoxysilane, gamma- glycidoxypropyltrimethoxysilane, gamma- One selected from methoxy silane, gamma-aminopropyl trimethoxy silane, 3- (trimethoxy silane) propyl methacrylate, vinyl trimethoxy silane, vinyl triethoxy silane, hydroxyethyl methacrylate acid phosphate Preparing a surface layer composition comprising the above coupling agent;
b) applying the surface layer composition to one or both sides of the base panel; And
c) heat curing step;
And an artificial marble comprising the synthetic marble. A process for preparing an epoxy resin composition comprising: a) mixing a base resin, an inorganic filler, an acrylate oligomer, a crosslinking agent, an initiator and beta-3,4-epoxycyclohexylethyltrimethoxysilane, gamma-glycidoxypropyltrimethoxysilane, One selected from methoxy silane, gamma-aminopropyl trimethoxy silane, 3- (trimethoxy silane) propyl methacrylate, vinyl trimethoxy silane, vinyl triethoxy silane, hydroxyethyl methacrylate acid phosphate Preparing a surface layer composition comprising the above coupling agent;
b) curing the surface layer composition to produce an artificial marble panel;
c) applying the surface layer composition to one or both sides of the base panel and bonding the artificial marble panel; And
d) heat curing step;
And an artificial marble comprising the synthetic marble. 3. The method according to claim 1 or 2,
Wherein the base resin is composed of a polymer resin and a monomer, and comprises 5 to 50% by weight of a polymer resin and 50 to 95% by weight of a monomer. The method of claim 3,
Wherein the polymer resin comprises any one or two or more selected from acrylic resin, unsaturated polyester resin, epoxy resin, polyvinyl chloride, polystyrene, polycarbonate and polyethylene terephthalate . The method of claim 3,
Wherein the monomer comprises one or more selected from the group consisting of methacrylate, ethyl acrylate, butyl acrylate and hexyl acrylate. 3. The method according to claim 1 or 2,
Wherein the initiator comprises at least one selected from the group consisting of peroxyketal di-t-butyl peroxide, dialkyl peroxide, peracyl peroxide, peroxy ester and hydroperoxide. 3. The method according to claim 1 or 2,
Wherein the crosslinking agent is selected from the group consisting of ethylene glycol dimethacrylate, ethylene glycol trimethacrylate, trimethylolpropane trimethacrylate, triaryl cyanate, diaryl phthalate, aryl methacrylate and triethylene glycol dimethacrylate. Wherein the composite panel comprises one or more artificial marbles. delete 3. The method according to claim 1 or 2,
Further comprising 1 to 50 parts by weight of one or more additives selected from antimicrobial agents, pigments, dyes, ultraviolet absorbers, flame retardants, fluidizers, polymerization inhibitors, antioxidants, chain transfer agents and antifoaming agents per 100 parts by weight of the surface layer composition. A method for manufacturing a composite panel comprising marble. 3. The method according to claim 1 or 2,
Wherein the base panel comprises an artificial marble comprising one or more selected from inorganic materials, synthetic resins, wood and metallic materials.

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