碳纤维增强海因环氧树脂复合材料拉挤工艺性能研究

通过DSC分析及粘度和力学性能测试研究了海因环氧树脂/甲基六氢苯二酸酐/2-乙基-4-甲基咪唑体系的粘度特性,固化反应动力学,浇铸体及碳纤维增强拉挤成型复合材料的力学性能。结果表明,该体系在50℃下,15 h内粘度<500 mPa.s,可以满足拉挤工艺要求。其碳纤维复合材料的玻璃化温度达到206℃以上,剪切强度达到80 MPa,耐热性和力学性能良好。

Study on carbon fiber reinforced hydantoin epoxy composites using pultrusion process

The viscosity properties,curing kinetics and mechanical properties of resin casting and carbon fiber reinforced composites using pultrusion process of hydantoin epoxy/methyl hexahydrophthalic anhydride benzene/2-ethyl-4-methyl imidazole system were investigated by DSC analysis,viscosity test and mechanical property test.The results showed that the viscosity of the system<500 mPa · s below 50 ℃ within 15 h and met the pultrusion process requirement.The glass transition temperature of carbon fiber reinforced composites was above 206 ℃ and the shear strength was up to 80 MPa.The compisite had good heat resistance and mechanical properties.