PREPARATION AND PROPERTIES OF NON-CIRCULAR CROSS-SECTION SiC FIBERS FROM A PRECERAMIC POLYMER

被引：0
|
作者：
Wang Yingde [1 ]
Liu Xuguang [1 ]
Wanglei [1 ]
Lan Xinyan [1 ]
Xue Jingen [1 ]
Jiang Yonggang [1 ]
Zhong Wenli [1 ]
机构：
[1] Natl Univ Def Technol, State Key Lab Adv Ceram Fibres & Composites, Coll Aerosp & Mat Engn, Changsha, Hunan, Peoples R China
来源：
ADVANCES IN POLYMER DERIVED CERAMICS AND COMPOSITES | 2010年 / 213卷
关键词：
SILICON-CARBIDE FIBERS;
D O I：
暂无
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Preceramic polymer SiC fibres are usually circular in cross section. Polycarbosilane(PCS)-based fibres are melt spun and extruded into a wide variety of non-circular shapes. The trilobal, C-shaped, hollow, ribbonlike, pentagonal and swirl-shaped PCS fibres were prepared. These non-circular fibres were cured and pyrolyzed at the same conditions as the circular SiC fibres and the tensile strength, microstructure, electromagnetic properties and reverberation attenuation to microwave of the non-circular fibres were compared to that of circular SiC fibres. Results showed that non-circular SiC fibres have a higher tensile strength than that of the circular SiC fibres and exhibit an excellent microwave-absorbing property.
引用
收藏
页码：121 / 126
页数：6
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