CE/nano-SiO_2复合材料的RTM工艺条件  

Process conditions of CE/nano-SiO_2 composite for RTM

作　　者：张文根[1] 张学英[1] 祝保林[1] 

机构地区：[1]渭南师范学院复合材料工程中心,陕西渭南714000

出　　处：《中国胶粘剂》2013年第3期1-4,共4页China Adhesives

基　　金：陕西省科技计划基金项目(2010K06-07);陕西省教育厅专项科研基金项目(2010JK547)

摘　　要：以CE(氰酸酯)树脂为基体,以硅烷偶联剂(KH-560)表面处理过的纳米二氧化硅(nano-SiO2)为改性剂,采用高速均质剪切法制备CE/nano-SiO2复合材料;然后以该复合材料体系的黏度、凝胶化时间、弯曲强度和玻璃化转变温度(Tg)为考核指标,采用单因素试验法优选出满足树脂传递模塑(RTM)工艺用复合材料体系的最佳工艺条件。结果表明:当w(nano-SiO2)=3%、工作温度为(90±10)℃、工作时间≤10 h、固化温度为110～200℃和后处理工艺条件为220℃/4 h时,复合材料在低温时具有良好的稳定性,在高温时具有良好的反应性,完全满足RTM工艺的基本要求。WiTh CE（cyanate ester） resin as matrix,nano-SiO2 with surface trealed by silane coupler（KH-560） as modifier,a CE/nano-SiO2 composite was prepared by shearing method with high-speed and homogenization.Then,with viscosity,gelling time,flexural strength,and glass transition temperature（Tg） of eomposite system as evaluation indices,the optimal process conditions of composite system for RTM（resin transfer molding） were preferred by single-factor experiment,The results showed that the composite had both good stability at low temperature and good reactivity at high temperature,and the composite could completely meet basic requirements of RTM process when mass fraction of nano-SiO2 was 3%,work temperature was（90±10）℃,work time not more than 10h,curing temperature was 110-200℃,and post-treatment process conditions were 220℃/4h.

关 键 词：氰酸酯 纳米二氧化硅 复合材料 树脂传递模塑 

分 类 号：TQ050.43[化学工程]