| 摘要 |
<p>Material according to the invention is composed of hardened and, optionally, foamed sol-gel material containing SiO 2 nanopowder, of a grain size from 10 to 200 nm, in the amount of 5 to 90% by weight and/or quartz fibers, of fiber size from 1 µm to 10 µm in the amount of 5 to 20% by weight of content. The method for obtaining the ceramic thermal insulation material consists in adding colloidal silica in quantity from 5 to 90 % by weight to water solution containing at least 10% by weight of silicon alcoholate and gelling the sol-gel water suspension with the addition of SiO 2 nanopowder, optionally specific fluorine compound is instilled, acting as porophor, and, following the process of annealing the gel, colloidal solution is formed in a proper shape, dried in a drier and annealed in a furnace , in air, at temperature from 800 to 1300°C.</p> |
