RU1788949C - Method of making decorative facing material - Google Patents

Abstract

Use: for the manufacture of decorative thermal and electrical insulating material. SUMMARY OF THE INVENTION: an article is obtained by successively placing three layers in the form of a mixture of ground glass and fillers. The middle layer is obtained by mixing ground glass of a fraction of 0.5-1.5 mm - May 95-99.% And a blowing agent of a fraction of 0.14-0.5 mm - 1-5 wt.%. In the lower supporting layer, ground glass has a fraction of 3-5 mm. A slab made of heat-resistant concrete can be placed at the bottom of the mold. Electrical resistivity2 1010 Ohm-m. The coefficient of specific thermal conductivity of 0.05 kcal / m-h trade. The compressive strength is 360 kgf / cm2. 1 tab.

Description

The invention relates to methods for producing cladding materials and can be used in the construction of buildings and interior decoration.

A known method of manufacturing a decorative facing material, comprising first placing in the form a layer of a moistened mixture of silica sand 25 wt.% And cullet 75 wt.% With a thickness of 10 mm and a layer with a thickness of 3 mm cullet mixed with dye, followed by heat treatment ..

The disadvantage of this method is the relatively high conductivity, which does not allow the use of this material as an electrical insulating finish.

The closest in technical essence and the achieved effect to the invention is a method for manufacturing decorative and facing material, comprising filling in the form of a carrier layer of a mixture of sand, ground glass and a gasifier in the following ratio of components, wt.%: Sand 48-70 ground glass. 28-50 blowing agent 1-10 and a decorative layer of colored glass granules, followed by heat treatment.

The disadvantage of this method is the relatively high conductivity due to insufficient pores.

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in the material. The electrical resistivity of the product is 2.0 -1013 Ohm-m. The coefficient of specific thermal conductivity is 0.12 kcal / m -h.

The aim of the invention is to reduce the electrical conductivity of products, as well as increase their service life.

This is achieved by the fact that in the method of manufacturing a decorative material by sequentially filling in the form of a carrier layer a mixture of sand and ground glass, a layer of ground glass and a decorative layer of colored glass granite and subsequent heat treatment, the middle layer further comprises a gaseous the following ratio of components, wt.%:

ground glass

fractions 0.5-1.5 mm 95 99

blowing agent ......;.

fractions of 0.14-0.5 mm. 1-5, and ground glass in the carrier layer has a fraction of 3-5 mm.

Before backfilling necyuiero, a slab made of heat-resistant concrete can be pre-laid on the bottom of the mold, which increases the adhesion of the products to be coated.

In the manufacture of decorative material using cheap waste glass production. Quartz sand is used as a mineral filler, and crushed glass is obtained from waste from glass production, and glass granulate from damped and transparent glasses and other glass wastes.

Salts of various metals decomposing at the sintering temperature of the charge with evolution of gas can be used as a blowing agent.

The following are specific examples of the method.

Example 1, In metal molds placed on a rolling table, falling asleep. 10 mm carrier layer from a mixture of sand and ground glass with an average particle size of 3 mm. Then the middle layer is 5 mm thick, consisting of a mixture of ground glass with an average particle size of 1.5 mm and a blowing agent - 0.5 mm with a ratio of components, wt.%:

Ground glass. 95

Gas blower5

Chalk is used as a blowing agent. An upper decorative layer of 3 mm thickness from colored glass granulate is poured onto the middle layer. After that, the mold is placed in a tunnel oven, where the material is heated, sintered at 800–900 ° C and cooled. The duration of the heat treatment is 8 hours.

PRI me R 2. At the bottom of the mold lay a plate made of heat-resistant concrete with a thickness of 20 mm, then fill the bearing layer with a thickness of 10 mm from a mixture of sand and ground glass with an average particle size of 5 mm, then the middle layer with a thickness of 5 mm, consisting consisting of a mixture of ground glass with an average particle size of 0.5 mm and a blowing agent of 0.14 mm with a ratio of components, wt.%:

Ground .glass99 Blowing agent 1

Known k is used as a blowing agent. An upper decorative layer of 3 mm thickness from colored glass granulate is poured onto the middle layer. The heat treatment is the same as in example 1.

The resulting products had the properties shown in the table.

The inclusion of a gasifier in the middle layer increases the number of pores in the product, which reduces the specific gravity, thermal and electrical conductivity. Placing a concrete slab on the bottom of the mold increases the life of the product by increasing its strength.

Claims (1)

The formula has been invented and A method of manufacturing a decorative and facing material, comprising sequentially filling in the form of a carrier layer a mixture of sand and crushed glass, a layer of crushed glass and a decorative layer of colored glass granulate, and subsequent heat treatment, characterized in that that a gasifier is additionally introduced into the middle layer, with the following ratio of components, wt.%: ground glass of a fraction of 0.5-1.5 mm - 95-99: gasifier fractions of 0.1-0.5 mm are 1-5, and ground glass of fractions of 3-5 mm is introduced into the carrier layer.