| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a lightweight heat insulating material having both of extremely low heat conductivity and high heat resistance in reduced air pressure. SOLUTION: A heat insulating material is constituted by interposing a core material 3 comprising heat-resistant inorg. fiber integrated matter between a high temp. skin material comprising a heat-resistant inorg. fiber fabric and a low temp. skin material 2 and sewing these material by heat-resistant inorg. fiber thread 4 to integrate them. In this case, by adding a high heat radiation material (SiC powder, SiC whisker) to the core material 3, heat conductivity is made extremely low and, by coating the side wall part of the core material with the high temp. skin material 1, the scattering of the core material can be prevented.</p> |
