| 摘要 |
FIELD: chemistry.SUBSTANCE: invention relates to industry of construction materials and may be used for production of non-baked heat insulation materials, used for insulation of buildings, structures and pipelines. A composition for production of a heat insulation material, including a binder, a silica-containing filler and boric acid, the binder is an aqueous solution of sodium polysilicate with a silicate module 4.2, produced by introduction of 10% silicon dioxide hydrosol into 30% aqueous solution of sodium silicate with their ratio of 1:1, mixing at 100°C for 3.0 hrs with subsequent soaking at this temperature for 0.4 hrs, and the specified filler - finely ground diatomite at the following ratio of components, wt %: aqueous solution of sodium polysilicate 92.0-95.5, diatomite 1.5-3.0, boric acid 3-6.EFFECT: increased compression strength and reduced density of a heat insulation material.1 tbl |
