SU1690541A3 - Method of producing decorative components - Google Patents

Abstract

The invention relates to the manufacture of ,, decorative items, such as artificial marble, used for finishing buildings and structures. The goal is to increase the wear resistance and heat resistance of products. According to the invention, a thermosetting binder — a phenol-formaldehyde resin, a mineral naponitel of a fraction of 0.5–2.0 mm in an amount of 40–65% of the total mass of aggregates, a pigment, hexamine, and stearic acid are mixed by co-grinding in a ball mill. The resulting dry mixture is mixed with coarse aggregate of a fraction of 2-20 mm with a finished product thickness of 4-30 mm, respectively. The mixture is then placed in a mold and pressed at a pressure of 5-15 MPa and a temperature of 150-170 ° C with an exposure time of 60-90 seconds per 1 mm of the thickness of the product. After pressing the product is ground and polished 2 tab.

Description

The invention relates to the manufacture of decorative articles, such as artificial marble, used for exterior or interior decorating of buildings and structures.

The purpose of the invention is to increase the wear resistance and heat resistance of products.

The method is carried out as follows.

In the first stage of mixing, the stone-processing production waste (granite, marble, quarry sand) in the form of particles 0.5-2.0 mm in size is placed together with solid phenol-formaldehyde resin, dye, hexamine and stearin in a ball mill. Mixing is carried out for 6-8 hours at room temperature. As a result of grinding and grinding, a powdery mixture of cement type is obtained with a uniform distribution of all

incoming components with a particle size of 10-150 microns. Further, to obtain strong decorative and finishing products in the second mixing stage, the remaining mineral filler is added in the form of particles with a size of 2-20 mm with a finished product thickness of 4-30 mm, respectively, and mixed in a mill without balls for 1.0-1.5 hours. Then the mixture is deformed by placing it in a heated mold for a temperature of 150-170 ° C, and pressed with a force of 5-15 MPa.

Examples of the composition of the mixture are presented in table 1.

Example 1. In a ball mill load the components of the mixture, including mineral filler fraction of 0.5-2.0 mm (composition 4, Table 1). The amount of mineral filler is 40% of its total amount. In the ground mixture is injected

ABOUT

yoo o

ate

Ca

the rest of the mineral filler fraction 2-20 mm and mix.

Then the mixture is placed in a mold and pressed at a temperature of 150 ° C at a pressure of 5 MPa with an exposure of 90 s per 1 mm of the thickness of the product. After pressing, the product is ground and polished.

Example 2. In a ball mill load the components of the mixture, including 65% mineral filler fraction of 0.5-20 mm (composition 5, table 1). Mix with grinding to obtain a dry mixture in the form of cement. Then the remaining mineral filler of the 2-20 mm fraction is introduced. The mixture is placed in the mold and pressed at a pressure of 15 MPa and a temperature of 170 ° C with an exposure time of 60 s per 1 mm of the thickness of the product. After pressing, the product is ground and polished.

The results of product testing are presented in table 2.

Claims (1)

Invention Formula A method of making decorative articles, comprising preparing a raw mix by mixing a thermosetting binder, a mineral filler, a pigment, hexamine, and stearic acid, hot pressing the mixture at 150-170 ° C with an exposure time of 60-90 seconds per 1 mm of the product thickness in a closed mold with subsequent grinding and polishing, characterized in that, in order to improve the wear resistance and heat resistance of the products, in the preparation of the raw mixture, it is first mixed with grinding 40-65% of the mineral filler of its total amount with a particle size of 0.5-2 mm with a thermosetting binder, pigment, hexamine and stearic acid until a homogeneous mixture is obtained, which is then mixed with the rest of the mineral filler with a particle size of n 2-20 mm when the thickness of the finished product respectively 4-30 mm, and the pressing is carried out at a pressure of 5 - 15 MPa. It is known for marbled fractions of 2-20 mm Jfo% The same fraction 0.5-, 2.0 mm Resin SL-010 Urotropin Stearic acid Fat dye - 0.1 Zinc oxide White marble fraction 2-20 mm Same fraction 0.5-2.0 ml Granite titanium dioxide, fractions 2-20 mm The same fraction 0.5-2.0 mi Marble, Fractions 0.5-2.0 mm 0.5 0.1 34 ".About 0.1 0.1 23, It 4032. ( ten 2948,6 Table2 0.0 0.2-0.4 0.06 0.05 0.05 0.06 0.06