摘要
以三种不同陶瓷纤维缝线缝制而得的柔性隔热材料为研究对象,比较了上述材料在300、600和900℃热处理30 min后拉伸强度的变化。通过对材料断裂模式的分析,提出纤维表面处理剂的挥发和非晶质纤维的晶型转变,是导致柔性隔热材料高温拉伸强度降低的主要原因。
Three flexible insulations made from different ceramic for 30 min in atmosphere, respectively. Tensile strength was studied fibers were treated at 300℃ , 600℃ and 900℃ with a different variation of the heat treatment temperature and fiber surface was observed by SEM. By analyzing the fracture mechanism of the fiber, the main rea- son leading to th fiber surface and e decrease of tensile strength at high temperature was suggested, which was the ablation of agent on the crystal transition of amorphous fiber.
出处
《宇航材料工艺》
CAS
CSCD
北大核心
2013年第5期49-53,共5页
Aerospace Materials & Technology
关键词
柔性隔热材料
拉伸强度
断裂模式
Flexible insulation, Tensile strength, Fracture mechanism
