摘要
分别选用KH550、KH560、KH570三种有机硅烷偶联剂处理无碱玻纤粉(GF),采用热模压成型技术制备玻纤增强聚酰亚胺复合材料,对复合材料的力学性能进行了分析和研究。结果表明:以KH550处理30%玻纤得到的复合材料力学性能最好,当其用量为GF质量的0.5%时,拉伸强度提高了35%,弹性模量提高了21.8%,弯曲强度提高了42.1%,冲击强度提高了52.5%。SEM显示KH550处理GF与聚酰亚胺基体之间形成了良好的界面,界面层起到很好的应力传递作用,达到良好的增强、增韧效果。
Short cut glass fiber （GF） was treated by silane coupling agents KH550, KH560 and KH570 respectively. GF/TPI composites were prepared by means of thermal moulding compression, and the mechanical properties of the prepared composites were analyzed and studied. The results indicated when the composite was reinforced by silane coupling agent treated GF （30%）, the mechanical properties of the composite were the best; when the content of KH550 was 0. 5 % of the mass weight of GF, the tensile strength, elastic modulus, bending strength and impact strength of the composite increased by 35%, 21.8%, 42.1% and 52.5% respectively. SEM photograph of fracture surface revealed that there was best interface bonding between KH550 treated GF and TPI matrix, which had very good stress transfer effect, resulted in ideal reinforcement and toughening.
出处
《塑料工业》
CAS
CSCD
北大核心
2007年第7期22-24,30,共4页
China Plastics Industry
关键词
聚酰亚胺
硅烷偶联剂
玻纤
表面处理
力学性能
Polyimide
Silane Coupling Agent
Glass Fiber
Surface Treatment
Mechanical Properties
