| 摘要 |
FIELD: chemistry.SUBSTANCE: invention relates to production of high-strength, light-weight heat-noise-moisture insulating, heat-resistant structural materials. A crude mixture for producing heat-noise-moisture insulating, heat-resistant material, which contains filler - expanded pearlite or expanded vermiculite, quartz sand, schungite or liquid glass, contains said pearlite or vermiculite with particle size of 0.5-2.5 mm, quartz sand, containing not more than 3% silt and clay, with particle size of 0.01-0.03 mm, liquid glass with density of 1.45 g/cmand additionally basalt or glass fibre with particle size of 3-7 mm, magnesite powder, magnesium chloride solution with density of 1.2-1.25 g/cmand sodium silicofluoride, wherein the magnesite powder and schungite are in form of a magnesite-schungite mixture in ratio 1:3, with the following ratio of components, wt %: said sand - 21.5-26.88, said fibre - 0.54-0.65, said mixture - 8.06-9.14, said liquid glass - 10.75-12.37, sodium silicofluoride - 0.5-1.5, said solution - 2.0-2.2, said filler - the balance. The method of producing a structural article from said crude mixture is characterised by mixing quartz sand with a portion of liquid glass to a homogeneous mass, adding the expanded pearlite or vermiculite and basalt fibre or glass fibre, mixing to uniform distribution, adding the magnesite-schungite mixture in ratio 1:3, said magnesium chloride solution and then adding the remaining liquid glass, sodium silicofluoride and mixing all components to homogeneity, pouring the prepared mixture into a mould, the bottom of which is uniformly coated with a layer of quartz sand with thickness of 2.0-2.5 mm, leaving 2-3 mm from the top edges of the mould, filling the mould to the top edges with a mixture of the magnesite-schungite mixture in ratio of 1:3 with magnesium chloride solution with density of 1.2-1.25 g/cmin ratio of 2.86:1 which is mixed for 4-5 minutes, holding for 55-60 minutes and removing the article from the mould after vibrating the mould for 1.5-2.0 minutes.EFFECT: reduced water absorption.2 cl, 1 ex, 1 tbl |
