高强玻璃布增强聚酰亚胺复合材料性能  

Properties of polyimide composite reinforced by high-strength glass fabric

作　　者：陈轶华[1] 朱文苑[1] 杨学军[1] 杨晓军[1] 刘锋[1] 

机构地区：[1]西安航天复合材料研究所,西安710025

出　　处：《固体火箭技术》2011年第5期648-651,共4页Journal of Solid Rocket Technology

摘　　要：采用真空辅助模压方法制备了高强玻璃布(SW220)/聚酰亚胺(BMP350)复合材料,对该复合材料常温和高温条件下的热、力学性能进行了研究。结果表明,常温下SW220/BMP350复合材料具有较高的弯曲和拉伸强度,200℃下复合材料的强度保持率大于65%,平均热膨胀系数约为(6～8)×10-6K-1;DMA测试表明玻璃化转变温度值Tg=375℃。Polyimide（BMP350）composite reinforced by high-strength glass fabric（SW220）were prepared by means of vacuum assistant molding method.Mechanical and thermal-physical properties of composite were studied both at normal and high temperature.The results indicate that SW220/BMP350 polyimide composite possesses higher bending and tensile strength at normal temperature.The conservation rate of composite strength tested at 200 ℃ kept more than 65%.The average coefficient of thermal expansion is in the range（6~8）×10-6K-1.The glass-transition temperature of SW220/BMP350 polyimide composite is about 375 ℃ by dynamic mechanical analysis method.

关 键 词：聚酰亚胺 复合材料 耐高温树脂 

分 类 号：V258[一般工业技术—材料科学与工程]