| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a heat insulating material with reduced heat contraction at a high temperature. <P>SOLUTION: The heat insulating material includes: a plurality of small particles S constituted of a first inorganic compound containing silica; and a plurality of large particles L constituted of a second inorganic compound having a crystalline structure of quartz, and having a larger particle diameter than that of the small particle S. <P>COPYRIGHT: (C)2012,JPO&INPIT |
