摘要
为了使酚醛树脂模塑料各项性能达到汽车换向器材料的要求,合成了一种端羟基聚氨酯对酚醛树脂模塑料进行增韧改性,并根据国际标准对增韧后模塑料制品的力学性能、热性能和电性能等进行测试。研究表明,通过加入12%的端羟基聚氨酯可使酚醛模塑料在提高弯曲强度的情况下,同时提高冲击强度,并对增加热稳定性和控制收缩也有显著的效果。
A kind of hydroxyl-terminated PU-prepolymer was prepared to toughen PF molding compound to meet all performances of automobile inverter material.The mechanical property,heat performance and electric property are tested for toughened moulding compounds according to international standards,the test results show that the impact strength of toughened moulding compounds was improved drastically with adding12%PU into PF while the flexure strength is increased.By the way it did good for heat resistance and shrinkage controlling.
出处
《汽车工艺与材料》
2004年第10期33-34,共2页
Automobile Technology & Material
关键词
换向器
酚醛模塑料
聚氨酯
增韧
inverter
phenolic molding compounds
polyurethane
toughening
