摘要
热固性聚三唑树脂（PTA）具有突出的力学、热学性能,分子可设计性强,工艺性好,可与多种增强纤维复合制成高性能复合材料。通过浇注体研究了一种热固性PTA树脂的力学、热学性能,固化体系玻璃化温度接近200℃。采用扫描电镜（SEM）、单向板、NOL环等方法,对T-700炭纤维/PTA树脂复合材料性能及粘接界面进行了系统研究。结果表明,复合材料的拉伸、压缩性能与T-700炭纤维/E-51环氧树脂复合材料相当,剪切性能低20%~40%。通过SEM对复合材料粘接界面分析,破坏断面＂拔出＂纤维表面光滑,挂胶较少,界面粘接相对薄弱是影响复合材料性能的主要因素。
Thermosetting polytriazole resin has comprehensive mechanical,thermal and processing properties,and good compatibility with a lot of reinforcing fibers.The mechanical and thermal properties of a thermosetting polytriazole resin were studied by casting specimens,the glass transition temperature （Tg） of the curing system is about 200℃.Analysis on the properties and interface of T-700 carbon fiber reinforced PTAresin composite as performed by SEM,unidirectional filament-wound plate and NOL ring.The results show that the tensile strength and compressive strength of T700/PTA composite are as high as those of a kind of T700/E51 composite,the interlayer shear strength of T700/PTA composite is 20%~40% percent lower than that of T700/E51 system.The SEM fracture surface pictures of the broken specimens shows that the surface of the pull-out fibers is smooth with very few resin and the poor interface between T700 fiber and PTA resin is an principal factor to influence the properties of the composite.
出处
《固体火箭技术》
EI
CAS
CSCD
北大核心
2010年第6期690-693,共4页
Journal of Solid Rocket Technology
关键词
炭纤维
PTA树脂
界面
单向板
NOL环
carbon fiber
PTA resin
interface
unidirectional filament-wound plate
NOL ring
