环境温度对架空导线用碳纤维复合芯成型工艺及性能的影响

研究了两种不同树脂体系黏度与环境温度、凝胶化时间与温度的关系,确定了用于拉挤工艺的树脂体系.采用该树脂体系制备了架空导线用碳纤维复合芯,分析了环境温度对碳纤维复合芯制品成型工艺和拉伸强度的影响,采用扫描电子显微镜分析了碳纤维复合芯的拉伸断裂机理.结果表明,环境温度对碳纤维复合芯的拉伸强度及表现性能影响较大,当环境温度变...

EFFECT OF AMBIENT TEMPERATURE ON FORMING PROCESS AND PERFORMANCE OF CARBON FIBER REINFORCED COMPOSITE CORE USED FOR OVERHEAD TRANSMISSION LINE

The ambient temperature-viscosity relation and the gelation time-temperature relation of two resin system were studied,then the resin system used for pulltrusion molding was confirmed.Carbon fiber reinforced composite core used for overhead transmission line was prepared by using the confirmed resin system,the effects of ambient temperature on forming process and tensile property of carbon fiber reinforced composite core were analyzed and the tensile fracture mechanism of the carbon fiber reinforced composite core was analyzed by SEM.The results showed that ambient temperature had great influence on tensile property and surface performance of carbon fiber reinforced composite core.If pulltrusion parameters weren′t timely adjusted when ambient temperature changed greatly,the defect of composite core would appeared,such as instance die blocked,whiting,cavity.When ambient temperature was 30℃,the composite core had highest tensile strength.