热量
Different ablative materials could absorb an enormous collection of caloric, decomposing, melting and vaporing at different temperature. Gas coming from ablative materials not only carried away a part of caloric, but also came into being the effect of convective block.
复合涂层中加入不同的烧蚀材料，每种材料因为都会在一定的温度条件下通过分解、熔化、汽化等相变过程吸收大量的热量，所生成的气体不仅能带走一部分热量，而且在涂层附面层形成对流阻塞效应，烧蚀后所留下的孔隙进一步提升涂层的隔热性能。