KR20070113454A - Stripe artificial marble and process for preparing the same - Google Patents

Abstract

An artificial marble stone having a stripe pattern is provided to allow free control of intervals and colors in the stripe pattern, thereby realizing a colorful and refined stripe pattern. An artificial marble stone has at least two stripe patterns differentiated by colors. The artificial marble stone has a combination of at least one acryl-based stripe pattern using an acrylic resin as a base resin with at least one unsaturated polyester-based stripe pattern using an unsaturated polyester-based resin as a base resin. The artificial marble stone is obtained from starting materials including 100 parts by weight of base resin syrup, 100-200 parts by weight of inorganic fillers, 0.1-10 parts by weight of a crosslinking agent, and 0.1-10 parts by weight of a polymerization initiator.

Description

Striped artificial marble and process for preparing the same

1 is a manufacturing process diagram of the striped artificial marble according to the present invention.

2 is a photograph of the striped artificial marble according to the first embodiment of the present invention.

3 is a photograph of a striped artificial marble according to a second embodiment of the present invention.

4 is a photograph of a striped artificial marble according to a third embodiment of the present invention.

5 is a photograph of a striped artificial marble according to a fourth embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

1a, 1b: hopper

2a, 2b: individual slurry

3: nozzle

4: striped slurry

5: drive belt

6: artificial marble

The present invention relates to artificial marble, and more particularly to a striped artificial marble of a colorful and refined feeling and a method of manufacturing the same.

Artificial marble is recently used in various applications such as various top plate materials, dressing tables, wash basins, tables, wall materials, flooring materials, furniture, interior materials, indirect lighting panels, interior accessories. More than 85% of the products are used as kitchen tops in general houses or apartments, but if they are connected to the tops and make the wall or dining table of the sink using existing solid colors or chips, it can give a monotonous feeling.

Existing artificial marble can be classified into two types: solid product and solid product. Granules can be changed to chips such as size, color, and material to create patterns or new patterns that are close to natural stone. I'm paying. Another method is to create a product by imitating a pattern such as bianco by drawing a pattern directly on the product. However, this method has a disadvantage of poor pattern reproducibility and difficulty in controlling the pattern freely.

Korean Patent Registration No. 242143 is a method of manufacturing artificial marble by curing a liquid resin in a molding cell, in which at least two layers of liquid resins of different colors are formed in the molding cell to be laminated, and then comb-shaped tools A method of manufacturing an artificial marble having a stripe pattern is disclosed, comprising the step of moving a comb-shaped tool in a laminated liquid resin while allowing the wing of the blade to contact the base surface of the forming cell. 339728 and 339729 disclose a similar method of manufacturing artificial marble, but are structurally different from the striped pattern of the present application.

Japanese Laid-Open Patent Publication No. 2005-126293 discloses an artificial marble having a transparent layer on a surface of a substrate composed of a thermosetting resin composition, wherein the transparent layer includes a thermosetting resin and a filler and has a thickness of 1 to 5 mm. , The pattern formed by the difference in concentration due to the unevenness of the lower portion of the transparent layer disclosed in this publication is fundamentally different from the striped pattern of the present application.

If you use a striped pattern, you can make a colorful design more timeless, but in general, the striped pattern is not monotonous and artificially strong, so the production itself is not achieved.

The present inventors have been able to freely adjust the spacing and color of the stripes, and if two or more materials are used properly, it has been confirmed that the present invention can make a striped product with a refined feeling and completed the present invention.

Accordingly, it is an object of the present invention to provide a striped artificial marble of a colorful and refined feeling and a method of manufacturing the same.

In order to achieve the above object, the present invention provides an artificial marble having two or more stripes that are distinguished by color differences.

According to a preferred embodiment of the present invention, an artificial tape comprising a combination of at least one acrylic stripe using an acrylic resin as the base resin and at least one unsaturated polyester stripe using an unsaturated polyester resin as the base resin. Offer marble.

In the present invention, the stripe may have irregular widths and spread to adjacent stripe areas in the border area, the stripe may be divided or partially overlapped, and the stripe is straight and the width thereof is constant or increases at a constant rate or May decrease.

The raw material of artificial marble used in the present invention includes 100 to 200 parts by weight of inorganic filler, 0.1 to 10 parts by weight of crosslinking agent, 0.1 to 10 parts by weight of polymerization initiator, and forms streaks using chips based on 100 parts by weight of the base resin syrup. can do.

In addition, the present invention comprises the steps of preparing two or more kinds of slurry for stripes different colors; And it provides a method of producing artificial marble comprising the step of passing through the slurry for two or more stripes to form a stripe to cure.

In the present invention, the nozzle used for forming the stripe is characterized in that it is made of a pipe shape having one or more partitions. The spacing, width, and pattern of stripes can be controlled by means of a nozzle partition.

The present invention relates to artificial marble having two or more different colors and having stripes that are distinguished by the interface between each color.

Striped artificial marble of the present invention is divided into two types, when the color is mixed and the boundary of the line is not clearly divided and the thickness of the line is not constant, the line and the line boundary is distinctly distinct and straight line This is the case where the thickness of is constant or increases or decreases constantly. Both cases are available.

In order to color the stripes in the present invention, pigments are generally used, but chips may also be used in addition thereto. Appropriate size of the chip is 100 to 2.5 Mesh (0.14 to 9.1 mm). In the case of using a chip, a stripe pattern may be formed by adding 40 wt% or less of the total marble.

In the present invention, an acrylic or unsaturated polyester resin is used as the resin, and these two resins may be alternately used to represent a string. In the case of acrylic resin, the texture is excellent, and in the case of unsaturated polyester resin, the transparency is excellent, so when the two raw materials are alternately used as lines, the same color can produce a unique feeling.

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

1 is a manufacturing process diagram of the striped artificial marble according to the present invention, the manufacturing process is largely composed of a slurry slurry production step, stripe forming step and curing step.

First, two or more kinds of slurry for stripes are prepared.

The artificial marble raw material is composed of a base resin syrup, an inorganic filler, a crosslinking agent, a polymerization initiator, a pigment, and the like. For example, 100 to 200 parts by weight of an inorganic filler, 0.1 to 10 parts by weight of a crosslinking agent, and a polymerization initiator based on 100 parts by weight of the base resin syrup. 0.1 to 10 parts by weight, and pigments of 0.1 to 5 parts by weight.

Acrylic resin, unsaturated polyester resin, epoxy resin, etc. can be used as a base resin. The base resin syrup consists of resin monomers and / or polymers and is usually composed of a mixture of monomers and polymers.

As the polymerizable monomer of the acrylic resin syrup, an acrylic monomer is preferable. Specifically, the acrylic resin syrup is a methacrylate monomer selected from methyl methacrylate, ethyl methacrylate, butyl methacrylate, 2-ethylhexyl methacrylate, benzyl methacrylate and glycidyl methacrylate alone or It is also a mixture of two or more kinds, and a mixture of a polymer in which a methacrylate monomer and a portion thereof are polymerized may be used. Of these, methyl methacrylate is particularly preferred. The content of the polymer in the syrup is preferably 10 to 50% by weight.

Unsaturated polyester is not particularly limited, and general unsaturated polyester may be used. For example, unsaturated polyesters having an acid value ranging from 5 to 40 and a molecular weight of about 1,000 to 5,000 obtained by condensation of saturated and / or unsaturated dibasic acids with polyhydric alcohols can be used.

The unsaturated dibasic acid and saturated dibasic acid used at this time include maleic anhydride, citraconic acid, fumaric acid, itaconic acid, phthalic acid, phthalic anhydride, isophthalic acid, terephthalic acid, succinic acid, adipic acid, sebacic acid, tetrahydrophthalic acid, and the like. If necessary, monobasic acids such as acrylic acid, propionic acid, benzoic acid, and the like, and polybasic acids such as trimellitic acid and tetracarboxylic acid of benzol can also be used.

Examples of the polyhydric alcohols include ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol, polypropylene glycol, 1,3-butylene glycol, hydrogenated bisphenol A, trimethylolpropane monoaryl ether, and neopentyl. Glycol, 2,2,4-trimethyl-1,3-pentanediol, glycerin and the like can be used.

The inorganic filler may be any one of inorganic powders commonly used in the same field, such as aluminum hydroxide, magnesium hydroxide, calcium aluminate, calcium carbonate, silica powder, and alumina, and may be used alone or in combination of two or more thereof. The particle size of the inorganic filler is preferably 10 to 200 ㎛, the refractive index is preferably 1.57 to 1.62. The inorganic filler preferably has a surface treated with a silane coupling agent, titanate coupling agent or stearic acid for dispersibility with the resin, improvement of mechanical strength of the product and prevention of precipitation. A preferred content of the inorganic filler is 100 to 200 parts by weight based on 100 parts by weight of the base resin syrup.

The crosslinking agent is a multifunctional acrylic monomer which crosslinks with the acrylic resin syrup including an intramolecular copolymerizable double bond, and is ethylene glycol dimethacrylate, diethylene glycol dimethacrylate, triethylene glycol dimethacrylate, tetraethylene Single or two or more selected from glycol dimethacrylate, trimethol propane trimethacrylate, 1,6-hexane diol dimethacrylate, polybutylene glycol dimethacrylate and neopentyl glycol dimethacrylate Mixtures, of which ethylene glycol dimethacrylate is particularly preferred.

If no crosslinking agents are used or too little is used, unevenness of the surface is generated, bubbles are generated at the upper and lower portions of the artificial marble, and thus the bonding strength between the raw materials is reduced, and the heat resistance and heat discoloration resistance are deteriorated. If too much crosslinking agent is used, phase separation of chips occurs, which causes many problems in artificial marble pattern. Therefore, the amount of the crosslinking agent is preferably 0.1 to 10 parts by weight based on 100 parts by weight of the base resin syrup.

The polymerization initiators are organic peroxides such as benzoyl peroxide, diacyl peroxides such as dicumyl peroxide, butylhydro peroxide, hydroperoxides such as cumylhydro peroxide, t-butyl peroxy maleic acid, t-butylhydro peroxide, t-butyl hydroperoxybutylate, acetyl peroxide, lauroyl peroxide, azobisisobutyronitrile, azobisdimethylvaleronitrile, t-butyl peroxy neodecanoate, t-amyl peroxy 2- Either one or a mixture of two or more selected from ethyl hexanoate is used. In addition, a mixture of peroxides and sulfonic acids of amines or mixtures of peroxides and cobalt compounds can be used to allow polymerization and curing to be carried out at room temperature. The content of the polymerization initiator is preferably 0.1 to 10 parts by weight based on 100 parts by weight of the base resin syrup, and is generally used together with the polymerization accelerator.

Moreover, radical carriers, such as mercaptan compounds, such as a normal dodecyl mercaptan, a tertiary dodecyl mercaptan, a benzyl mercaptan, and a trimethyl benzyl mercaptan, can be used. The content of the radical carrier is preferably 0.1 to 5 parts by weight based on 100 parts by weight of the base resin syrup.

The color developing means is not particularly limited, and organic or inorganic pigments or dyes may be used as the conventional artificial marble additive.

In addition, the composition is conventionally known as an additive component of artificial marble, a silicone-based or non-silicone-based antifoaming agent; Silane-based, acid-based or titanate-based coupling agents mainly composed of trimethoxysilane; Phenyl salicylate-based, benzophenone-based, benzotriazole-based, nickel derivative-based or radical scavenging-based ultraviolet absorbers; Halogen-based, phosphorus- or inorganic metal-based flame retardants; Stearic acid type or silicone type release agent; Catechol-based or hydroquinone-based polymerization inhibitors; It may further include one or more additives selected from phenolic, amine, quinone, sulfur or phosphorus antioxidants.

Next, the individual slurries 2a and 2b from the hoppers 1a and 1b are passed through the stripe forming nozzle 3 to form streaks. At this time, the nozzle (3) used for forming the stripe is made of a pipe shape having one or more partitions, the spacing and width of the stripes and the pattern can be adjusted through the partition of the nozzle.

Next, the striped slurry 4 combined through the nozzle 3 is supplied to a casting line having the drive belt 5 to be cured, thereby completing the striped artificial marble 6 according to the present invention.

Figure 2 is a photograph of the striped artificial marble according to the first embodiment of the present invention, it is an acrylic artificial marble having a stripe of constant spacing and width.

3 is a photograph of a striped artificial marble according to a second embodiment of the present invention, which is an unsaturated polyester artificial marble having stripes having a constant interval and width.

4 is a photograph of a striped artificial marble according to a third embodiment of the present invention, which is an acrylic artificial marble having stripes having a constant interval and width.

5 is a photograph of a striped artificial marble according to a fourth embodiment of the present invention, which is an acrylic artificial marble to which a chip having a constant interval and width is added.

EXAMPLE

1. Preparation of raw material slurry

100 parts by weight of methyl methacrylate syrup consisting of a mixture of 30% by weight of polymethyl methacrylate and 70% by weight of methyl methacrylate, 160 parts by weight of aluminum hydroxide, 0.2 parts by weight of t-butyl peroxy neodecanoate, 0.3 parts by weight of t-amyl peroxy 2-ethyl hexanoate, 3 parts by weight of ethylene glycol dimethacrylate as a crosslinking agent, 0.2 parts by weight of normaldodecyl mercaptan as a chain transfer agent, BYK 555 (BYK-Chemie, Germany) ) 0.2 parts by weight, BYK 900 (BYK-Chemie, Germany) 0.75 parts by weight as a coupling agent, 0.2 parts by weight of Hisorp-P (LG Chem) as a UV stabilizer (absorption) was mixed to prepare a slurry to be used as a raw material. The slurry was divided into two or more, and pigments of different colors were added and stirred, followed by degassing.

2. Manufacture of artificial marble

After the two or more kinds of the slurry prepared above were poured into each hopper, the slurry from this was formed through the nozzle to form a stripe, and then sprayed onto a casting line having a drive belt to harden the artificial marble according to the present invention. Was prepared.

According to the present invention, by controlling the spacing and color of the stripes freely and using two or more materials as appropriate, it is possible to obtain a colorful and stylish striped artificial marble.

Claims (9)

Artificial marble with two or more stripes, distinguished by color difference. The artificial marble according to claim 1, wherein at least one acrylic stripe using an acrylic resin as the base resin and at least one unsaturated polyester stripe using an unsaturated polyester resin as the base resin are combined. The artificial marble according to claim 1, wherein the stripes have irregular widths and spread to adjacent stripes at the border region. The artificial marble according to claim 1, wherein the stripes are divided or partially overlapped. The artificial marble according to claim 1, wherein the stripes are straight and their width is increased or decreased at a constant or constant rate. The artificial marble according to claim 1, wherein the raw material of artificial marble comprises 100 to 200 parts by weight of inorganic filler, 0.1 to 10 parts by weight of crosslinking agent, and 0.1 to 10 parts by weight of polymerization initiator based on 100 parts by weight of the base resin syrup. The artificial marble of claim 1, wherein the stripes comprise chips. Preparing two or more kinds of slurry for stripes having different colors; And A method of manufacturing artificial marble comprising the step of passing through two or more stripes of the slurry for stripes to form a stripe to cure. The method of claim 8, wherein the nozzle is in the form of a pipe having one or more partitions.

Images