一种非热压罐成型高性能玻璃布复合材料性能研究

Study on high performance glass fabric composites by non-autoclave process

对3233VB中温固化树脂进行流变性能和DSC分析分析,确定3233VB中温固化树脂的固化工艺;采用热熔法制备一种中温固化环氧玻璃布预浸料-3233VB/EW180B预浸料,通过真空袋法、模压法和热压罐法成型复合材料板,分别进行性能测试和对比。结果表明,3233VB/EW180B玻璃布预浸料适合真空袋法成型复合材料;3233VB树脂具有良好的韧性,夹层结构的抗滚筒剥离强度高,其预浸料可与蜂窝直接共固化;预浸料树脂质量分数相同时滚筒剥离强度随着预浸料层数的增加而提高。

The rheological property of 3233VB （medium temperature curing resin） was analyzed using DSC （Differential Scanning Calorimetry） which determined the curing technics of 3233VB. A kind of medium temperature curing prepreg using epoxy and glass fabric was prepared by hot melt method. And then the laminates were prepared by vacuum bag method, molding method and autoclave method, respectively. Finally, the properties of laminates were tested. The experimental results showed that 3233VB/EW180B prepreg is suitable for vacuum bag method. Besides, 3233VB epoxy has good toughness which makes a high peel strength of sandwich structures. And the 3233VB/EW180B prepreg could be co-cured directly with honeycomb. When the resin content of prepreg keeps constant, with the increase of laminates layers, the peel strength of laminates increase.