| 摘要 |
A heat insulating material contains basalt of superthin fiber, polyvinyl-acetate dispersion, silica-sol, sulphanole and water-repellent agent, clay bond, staple fiber made of rocks of basaltiform composition of 0.2-3.0 mkm diameter, water-repellent admixture from ethyl hydrosiloxane polymer, in the following component ratio, weight %: |
