航天用防热材料是航天技术必不可少的材料,在航天飞行器上占有相当的比重,所以受到世界各国科学家的特殊关注。这里提到的“热”和“防热”,与一般人们所知晓的厨房烹调的火焰温度或某一燃烧过程的温度不能相提并论。实际上,在航天中所遇到的温度比上面提到的温度要高出数十倍。因此,一般对材料的“热稳定性”的概念在此是不适用的。 Aerospace heat-resistant materials are indispensable materials for aerospace technology, occupy a considerable proportion of spacecraft, so by the special attention of scientists from all over the world. Mentioned here “heat” and “heat”, and the general knowledge of the kitchen cooking flame temperature or a combustion temperature can not be compared. In fact, the temperature encountered in aerospace is several times higher than the temperature mentioned above. Therefore, the general concept of “thermal stability” of the material is not applicable here.