摘要
本文通过有缺口和无缺口冲击试验、断裂韧性测试以及结合扫描电镜分析断面形貌,研究了酞侧基聚芳醚砜/聚苯硫醚共混物的断裂行为,讨论了聚苯硫醚增韧聚芳醚砜的机理.结果表明,共混物冲击强度的改善主要是由于其裂纹引发能的提高;共混物断裂韧性提高的原因是由于外加应力场在PPS微纤附近产生应力集中,促使基体和微纤都发生塑性形变,从而吸收更多的能量所致.
The impact strength and fracture toughness of PES-C/PPS blends were studied by means of unnotched Charpy impact test, notched Izod impact test and three point bending test method. The fracture surface morphology was studied by SEM method. The results showed the improvement on the impact strength was owing to the increase of the crack initiation energy; the improvement on the fracture toughness was a result of the energy absorption, which was caused by the matrix and microfiber plastic deformation, a result of the centralization of external stress around the PPS microfiber.
出处
《塑料工业》
CAS
CSCD
北大核心
1995年第1期23-25,共3页
China Plastics Industry
基金
国家自然科学基金资助项目
吉林省科委青年基金资助项目
关键词
聚芳醚砜
聚苯硫醚
断裂
韧性
共混酞测基
塑料
Phenolphthalein Polyethersulfone Polyphenylene Sulfide Fracture Toughness Impact Strength Toughening Mechanism
