Mechanical Properties of Aerogel-Ceramic Fiber Composites

摘要：

　　Aerogel composites were prepared by immersing ceramic fiber into silica aerogel precursor via supercritical fluid drying.The mechanical behavior of silica aerogel composites was investigated with shrinkage,tension,bending and compression.The influences of fiber volume fraction,aerogel density and heat treatment were examined.After reinforced by ceramic fiber,the shrinkage of aerogel and aerogel-fiber composites was retarded obviously.The mechanical property of aerogel-fiber composites increased first and then decreased with increasing fiber volume fraction from 5.8% to 11.5%.For a given fiber volume fraction,the mechanical strength enhanced with increasing aerogel density.In addition,the mechanical property of aerogel composites did not decrease but increased after heat treatment at 600C.

关键词： Aerogel Mechanical property Fiber volume fraction

作者: Gao Qing-fu Feng Jian Zhang Chang-rui Feng Jun-zong Wu Wei Jiang Yong-gang

作者单位: State Key Laboratory of Advanced Ceramic Fibers & Composites, College of Aerospace and Materials Engineering, National University of Defense Technology, ChangSha 410073, China

会议类型: 国际会议

会议名称: The Sixth China International Conference on High-Performance Ceramics(第六届中国先进陶瓷国际研讨会(CICC-6))

会议地点: 哈尔滨

会议语种:英文

页码: 94-99

在线出版日期: 2009-08-16（万方平台首次上网日期，不代表论文的发表时间）