Polyborosilazane preceramic as matrix resin of high temperature adhesive for graphite bonding
Polyborosilazane preceramic as matrix resin of high temperature adhesive for graphite bonding
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DOI：
10.1111/ijac.12717
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发表时间：
2017-09-01
影响因子：
2.1
通讯作者：
Xu, Caihong
中科院分区：
文献类型：
--
作者：
Li, Shuqin;Luo, Yongming;Xu, Caihong
本研究以聚硼硅氮烷陶瓷为基料，研制了一种用于石墨连接的改性高温胶粘剂。研究了胶粘剂的性能以及直接固化接头和煅烧接头的粘接性能。结果表明，在1100 ℃煅烧后，由于高温陶瓷相的形成和连接过程中熔融相的固化，材料的剪切强度达到最大值13.6MPa。固化后的胶粘剂在室温至1100 ℃范围内的压缩剪切强度均保持在6MPa以上，可直接应用于实际的高温环境中。
In this study, a modified high temperature adhesive based on polyborosilazane preceramic was developed for joining graphite. The properties of adhesive as well as bonding performance of both directly cured joints and calcined joints were investigated. The results showed that the shear strength reached the highest value 13.6MPa after calcination at 1100 degrees C due to the formation of heat-resistant ceramic phases and solidification of molten species during joining process. Besides, the compressive shear strength of cured adhesive without posttreatment was kept above 6MPa during test from RT to 1100 degrees C, which made it possible applied directly in practical high temperature environment.