Patent EA-000039-B1 (EA)
Title: Decorative and finishing material and method of production thereof
Inventor: KLABACHKA YURY KARLOVICH
IPC: C03B5/00
Filed: 1997-06-09
Abstract: 1. Decorative and finishing composite material comprising colorless and/or colored glass, simple and/or complicated silicates characterized in, that the upper layer of the material, making up 0.15-0.35 mm of the total thickness is partially-stabilized and contains in mother amorphous glass phase particles of glass granulate of other chemical composition 0.1-15 mm in size, forming said decorative surface properties sand chaotically-oriented crystals 0.5-2.5 mm in size, wherein a main constructive layer of said composite material additionally contains in mother amorphous glass phase caked silicon carbide with particles 0.05-0.5 mm in size and other silicate material in fine-grained state, wherein the amount of crystals and grass granules of other composition decreases while amount of silicon carbide and other silicon matters increases from the material surface into the depth, forming near-the bottom layer 0.25-0.6 mm thick of the total material thickness, which is seramic like by the structure. 2. Method production of said material according to Claim 1 comprise preparation of mixture be milling, washing and screening of initial components, then by-layer loading in a mould and further thermal treatment of the mixture, heating to the temperature corresponding to the logarithm of viscosity of glass granulate 2.4-2.5, keeping it under this temperature and subsequent cooling till ambient temperature via several graduate stages characterized in, that under by-layer load the upper layer is loaded with glass granulate other than the glass granulate of matrix of chemical composition and the process of cooling at the temperature corresponding to the logarithm of viscosity of glass granulate 9.5-10 process crystallization is carried out, keeping the material during time enough to form in the upper layer polycrystal structure with separate crystals 0.5-2.5 mm in size, wherein the temperature is chosen between the temperature corresponding to the maximum linear speed of crystals growth and the temperature of maximum forming of crystallization centers, further gradual cooling to the upper temperature of anneal, 2-nd stage, linear cooling to the lower temperature of annealing, 3-rd stage and cooling to the ambient temperature. 3. Method of production said material according to Claim 2 characterized in, that in the process of cooling under the temperature at the temperature corresponding to the logarithm of viscosity 6-6.5, load is applied upon the material surface to obtain decorative pattern, while the temperature is maintained at a level equal to the temperature of the subsequent stage of crystallization. 4. Method production of said material according to Claims 2 or 3 characterized in, that in the process of mixture preparation glass granulate is milled to grain size 10-30 mm, washed to remove light-weight admixtures and carbon, dried and metal matters removed and after that ground and screened to grain-size up to 2 mm, mixed with silicate sand in ratio from 1:10 to 1:3 with simultaneous moistening of mixture to 0.15-0.5 wt %; glass granulates are subjected to same preparation operations, except 2-nd grinding which is carried out to 2 mm grain size after in-layer loading of components unto a mould, the latter is prior heated to 60-150 degree C, the mixture is kept at this temperature for at least 20 min. before thermal treatment thereof.