KR20100009134A - The composition compound for the onix marble having the high strength and lightweight - Google Patents

Abstract

PURPOSE: A composite composition for preparing onix marble is provided to reduce the used amount of resin and to make a final onix marble product light by mixing a lot of ultra-light fillers to the resin and to improve the strength of a final product. CONSTITUTION: A composite composition for preparing high strength ultra-light onix marble comprises one or two or more selected from the group consisting of an unsaturated polyester oligomer-type resin, a liquid reactive monomer, a compound having a liquid unsaturated bond, microspheric hollow material powder, and short filber. The unsaturated polyester oligomer-type resin is included in the amount of 30-70 parts by weight.

Description

The composition compound for the onix marble having the high strength and lightweight}

The present invention is a technique for reducing the weight of the final product by mixing an ultra-light ceramic or glassy powder with a pupil in the unsaturated polyester resin as a filler. When mixing a commercially available resin for manufacturing onyx marble and a lightweight filler, there is a fundamental property of cracking due to high heat and shrinkage at the time of curing. The unsaturated polyester resin (UPR) for producing Onyx Marble is strictly an oligomeric form having a relatively high molecular weight, and has a structure in which a vinyl monomer such as styrene is mixed with the oligomer-type resin to cure. The final physical properties of the resin can be changed by reacting with. Secondary fillers were used as another method to prevent cracking. As the auxiliary filler, short fibers were used, and the short fibers used were 0.1 mm to 20 mm in length, and types of PP, PET, PVA, Kevlar, and carbon fibers were used.

The lowest raw material prices and the best physical properties were found through the repeated experiments to find the optimal raw material composition ratio. The price per unit weight of the ceramic or non-ceramic powder is 25 times more expensive than calcium carbonate, but since the specific gravity is 23 times lighter, it is a feature of the present invention how much of the ultra-light ceramic powder is mixed into the resin. And since the amount of the resin decreases as the ultralight powder is mixed, the raw material price is finally lower than the conventional raw material price using calcium carbonate. However, if the amount of ultra-light ceramic or non-ceramic filler is increased, the viscosity increases at the same time, which causes a problem in that it is not possible to work. In order to solve this problem, as few reactive monomers as possible were used, and supplementary fillers were used to increase the viscosity.

Onyx Marble refers to products such as bathroom products such as bathtubs and sinks, kitchenware such as sinks, household goods such as various ornaments, and artificial marble products. The materials that make up the OIX Marble can be divided into resins and fillers, and the resins did not change significantly using unsaturated polyester resins, while the fillers used several types of fillers. As a result, the name of the final product changed. It was first called simple marble using stone powder, and then onyx marble was introduced, in which marble was colored in aluminum hydroxide with pigments. However, they have been turned away from consumers as bathtubs and are almost out of the market. Afterwards, a bathtub having a ceramic texture using calcium carbonate as a filler has been introduced to the market. After all, their commonality is that they are too heavy.

In the present invention is to introduce a very light, onyx marble products that do not easily break apart. However, unsaturated polyester resins used in OIX Marvel have a problem that cracks occur due to the high exothermic temperature and severe shrinkage during hardening, so the resin manufacturer introduces various products to solve this problem. But it is not completely solved. Related patents include Korean Patent 10-0383254 and Korean Patent Publication 0163946. In the present invention, it was reacted with a vinyl monomer capable of imparting elasticity to a resin having a good crack, and was solved by using short fibers as a filler. The use of this short fiber has been mainly used for concrete molding and the method which is not used much for plastic molding is to be used in the present invention. Related documents include the Proceedings of the Architectural Institute of Korea Volume 27, No. 1 (Vol. 51). 10.27-27, pp 187-190.

The present invention is light and awake using a filler composed of a short-fiber and a resin having a vinyl monomer or an unsaturated bond that can give elasticity to the heavy and brittle physical properties of the conventional Onyx marble using unsaturated polyester resin as a main raw material It is about changing to unsupported physical properties and also finding the optimal economic mixing ratio of resin and filler.

The present invention uses a ceramic microspheres with pores or nonceramic microparts with pores as a lightweight filler to produce onyx marbles that are light and hard to break, and are viscous to unsaturated polyester oligomers to prevent cracks. These low vinyl monomers were reacted, and PP, PET, PVA, Kevlar, and carbon fibers were used as short fibers to prevent cracking of the resin.

In order to solve the problem of light weight in the manufacture of high strength ultra-light onyx marble in the present invention, Australian microcell Australia Pty. The trade name SL330 produced by Ltd. was used. Product name SL330 has a specific gravity of 0.4 g / cc and has a size of 150 μm to 330 μm. It is about 7 times lighter than calcium carbonate having a specific gravity of 2.71 to 2.83. As another ultralight filler, K1 or K20 was used as the non-ceramic microparticulate with pores as the trade name K series produced by 3M Corporation. The product name K20 has a specific gravity of 0.2 g / cc, has a size distribution of 25 μm to 120 μm, is made of 100% glass and is also called a glass bubble, which can be regarded as a very fine bulb. These pupil-type microparticulates have a high price per unit weight, but the price per unit volume is lower and the amount of resin is reduced by the volume of the powder. However, if the amount of powder becomes too large, the viscosity rises and the operation becomes impossible. Therefore, finding the critical point where the maximum amount of powder mixing and working conditions are possible is the economical issue of the product.

Table 1 in Example 1 is a bath manufactured using a conventionally used calcium carbonate as a filler, the raw material price per unit volume was calculated to be approximately 1,854 won. Table 2 shows the decrease in raw material price per unit volume with the increase in the use of K-1 products with a share of 0.125 US 3M, and the amount of micro-fraction based on UPR oligomer resin should be 0.15% by weight or more. It can be seen that the raw material price is lower than the product, and the raw material price per unit volume is 1,748 won, which shows that economic feasibility is higher than conventional products.

Increasing the amount of mixing of the microparticulates reduces the lightness of the bath, while increasing the strength and cracking and breaking defects. In order to eliminate this drawback, there are a method of modifying the physical properties of the resin itself and a method of reinforcing by mixing short fibers, and both methods were used in the present invention.

First of all, as a compound capable of reacting with an unsaturated polyester (UPR) resin in an oligomer state to modify the physical properties of cracks and cracked resins, there may be mentioned acrylic monomers, vinyl monomers, compounds having unsaturated bonds, etc. Compounds of can also be used. And as an acrylic monomer, methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, oxyl (meth) acrylate, dodecyl (meth) acrylate, Octadecyl (meth) acrylate, methylcyclohexyl (meth) acrylate, isobonyl (meth) acrylate, ethylene glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, and the like can be used. It is not limited to this. And the usage-amount of these acrylic monomers was hardened using 0-20 weight part. As a vinyl monomer, the monomer which has a vinyl group like vinyl acetate was hardened using 0-20 weight part. As the compound having an unsaturated bond, vegetable oil such as soybean oil, blue fish oil, and swine oil as animal oil were cured using 0 to 20 parts by weight. And the above-mentioned reactive compound can be used alone or in mixture.

And it is very effective to use PE, PP, PET, PVA, short-fiber type fillers to prevent cracking and cracking of unsaturated polyester (UPR) resin using a filler, glass fiber is excluded from these short fibers In particular, Kevlar or carbon fiber as steel fiber is very good for reinforcing the cracking defect of the resin, and it is preferable to use 0 to 1 parts by weight in the volume volume of the entire bath.

Example 1

Example 1 is to find the maximum economic threshold of filler and resin.

In Tables 1 and 2, the prices of the compounds are not fixed but are merely approximate, for example, as prices.

Table 1

Table 2

Example 2

20 kg of unsaturated polyester oligomer resin and 1 kg of butyl (meth) acrylate were added to the stirrer and mixed well, followed by adding 2.0 kg of 3M's brand name K1 microsphere powder to the stirrer and mixing well, followed by 80 g of a curing agent and mixing again. After the molding was put in a mold for molding a tub, and then dried to prepare a tub.

Example 3

20 kg of unsaturated polyester oligomer resin, 0.7 kg of butyl (meth) acrylate, and 0.3 kg of soybean oil were added to the stirrer and mixed well. Then, 2.0 kg of 3M brand name K1 microsphere powder was added to the stirrer and mixed again. After 80g was added and mixed well again, it was put in a mold for molding in the shape of a bath, and then molded and dried to prepare a bath.

Example 4

20 kg of unsaturated polyester oligomer resin, 0.7 kg of butyl (meth) acrylate, and 0.3 kg of soybean oil were mixed in a stirrer and mixed well, followed by 2.0 kg of 3M brand name K1 micro-spheres powder of 80 ml of PVA in a stirrer. After mixing well, 80 g of a curing agent was added and mixed well, and then the resultant was put in a mold for molding in a tub shape and then dried to prepare a bath tub.

Experimental Example 1

For the products prepared according to Examples 2 to 4, the barcol hardness, pencil hardness, bending hardness, flexural modulus, and boiling water tests were shown in Table 3.

Table 3

Barcol hardness is ASTM K-2583, tensile strength and flexural strength are measured by ISO R 3286 (X-HEAD SPEED: 1.7mm / min, SPAN: 100mm), tensile modulus and flexural modulus are measured by ISOR 3268 method. Was measured by the ISOR75 method.

Claims (6)

The present invention relates to a material of Onyx Marble, which can exhibit high strength and ultra-light properties, and is used to manufacture household goods such as bathroom products such as bathtubs, sinks, kitchen appliances such as sinks, various ornaments, and artificial marble, and unsaturated products. By using one or more of the group consisting of a polyester oligoma type resin, a liquid reactive monomer, a compound having a liquid unsaturated bond, a micro-pores powder, and short fibers, it is possible to exhibit high strength and ultra light properties. Composite composition for the manufacture of onyx marble. And this composition is characterized by constituting the maximum economic composition ratio of the resin decreases as the amount of micro-pores powder increases. The composite material composition according to claim 1, wherein the unsaturated polyester oligomer type resin comprises 30 to 70 parts by weight. The method of claim 1, wherein the micro-pores powder has a specific gravity of 0.1 to 0.5, a size of 10 to 330μm, and comprises a ceramic or glass component, characterized in that it comprises 4 to 20 parts by weight Composite composition for the manufacture of ultra-light onyx marble. The high-strength ultra-light onyx marble according to claim 1, wherein the liquid reactive monomer comprises 0 to 20 parts by weight of one or more acrylic monomers and vinyl monomers including butyl (meth) acrylate. Composite composition for manufacturing. The method of claim 1, wherein the compound having a liquid unsaturated bond comprises 0 to 20 parts by weight of one or two or more vegetable oils such as soybean oil, oil of blue fish, and swine oil. Composite composition for producing high strength ultra-light onyx marble. The composite material of claim 1, wherein the short fibers refer to PP, PET, PVA, kebra, and carbon fibers having a length of 0.1 mm to 30 mm, and include 0 to 1 parts by weight.