适于低温应用的玻璃纤维/聚醚酰亚胺复合材料  

Glassfiber Reinforced Polyethrimde Used in Cryogenic Temperature Environment

作　　者：高阳[1] 汤炜[1] 王立峰[1] 赵云峰[1] 

机构地区：[1]航天材料及工艺研究所,北京100076

出　　处：《宇航材料工艺》2009年第6期42-44,47,共4页Aerospace Materials & Technology

摘　　要：采用不同含量玻璃纤维/聚醚酰亚胺制备高性能复合材料,对其超低温(-253℃)线胀系数进行深入研究,并对其常温下的热导率、力学性能进行比较。结果表明,玻璃纤维质量分数为30%时,复合材料的综合性能优异,其典型性能如下:低温线胀系数纵向为2.16×10-5/K,横向为3.03×10-5/K,热导率为0.31W/(m.K),拉伸强度为158MPa,弯曲强度为264MPa,无缺口冲击强度为4.24J/cm2。The paper introduces high-performance composite made of different content of glass fiber reinforced thermoplastic Polyetherimide. By thoroughly investigating thermal expansion coefficient （CTE）at cryogenic temperature（ -253℃ ） and comparing between thermal conductivity and mechanical performance at ambient temperature, the result shows that glass fiber content is up to 30% , longitudinal CTE is 2. 16 ×10^-5/K, transverse CTE is 3.03 ×10^-5/K, thermal conductivity is 0.31 W/（ m· K）, tensile strength is 158 MPa, flexural strength is 264 MPa and non- notch impact strength is 4.24 J/cm2.

关 键 词：聚醚酰亚胺 玻璃纤维 低温性能 

分 类 号：TQ327.1[化学工程—合成树脂塑料工业] TQ323.7