VARTM用高性能双酚F环氧/酸酐固化体系的性能  

Properties of high performance bisphenol F epoxy resin /anhydride curing system for VARTM

作　　者：郭嘉琳[1] 袁象恺[1] 谢丹[1] 周金利[1] 姜正飞 余木火[1] 

机构地区：[1]东华大学纤维材料改性国家重点实验室材料科学与工程学院,上海201620

出　　处：《热固性树脂》2014年第1期16-20,共5页Thermosetting Resin

基　　金：国家高技术研究发展计划863项目(2012AA03A206)资助

摘　　要：采用示差扫描量热仪,力学性能测试,扫描电镜分析和热重分析研究了在双酚F环氧树脂/酸酐固化体系中加入纳米粒子型增韧剂的效果。并以加入纳米粒子增韧剂的树脂体系为基体,碳纤维平纹布为增强体,通过真空辅助树脂传递模塑(VARTM)工艺制备了复合材料,对其力学性能和微缺陷进行了研究。结果表明,加入纳米粒子型增韧剂后,在弯曲强度损失较小的情况下,浇注体的拉伸性能有所提高,冲击韧性大幅增加。制备的复合材料树脂/纤维浸润良好,没有干斑存在,微缺陷较少,力学性能优异,有望用于VARTM成型大型汽车结构部件的制造。The effects of adding nano - particle toughening agent in the bisphenol F epoxy / anhydride curing system were investigated by differential scanning calorimetry, mechanical testing, scanning electron microscopy （SEM） and thermal gravimetric analysis. The composite was prepared by the vacuum assisted resin transfer molding （VARTM） process using the resin system with nano - particle toughening agent as the matrix and carbon fiber plain weave fabric as reinforcement. The mechanical properties and micro - defects of the composites were studied. The results showed that the flexural and the be used tensile properties was improved and impact toughness strength after adding the nano -particle toughening composites had no dry spots, fewer micro -defects in manufacturing VARTM molding large automotive was increased significantly in the case of small losses of agent. The resin/fiber infiltration of composite was well and excellent mechanical properties and was expected to structural components.

关 键 词：双酚F环氧树脂 酸酐 纳米粒子 增韧剂 复合材料 延伸率 冲击强度 真空辅助树脂传递模塑 

分 类 号：TQ320[化学工程—合成树脂塑料工业]