| abstract |
The present invention provides a composition for a heat insulating material that can suppress recession while satisfying desired heat insulating performance, a heat insulating material, and a spacecraft including the same. A composition for a heat insulating material includes a fibrous substance 1, inorganic foamed particles 2, a thermosetting resin 3, and a foaming agent. As the fibrous substance 1, at least a first fibrous substance, A second fibrous substance made of a material different from the first fibrous substance, the melting point of the first fibrous substance being higher than that of the second fibrous substance, and the heat of the second fibrous substance The conductivity is lower than that of the first fibrous material. [Selection] Figure 2 |