碳纳米管/玻纤/环氧层板超声真空灌注工艺及性能研究

摘要

针对碳纳米管/玻璃纤维/环氧树脂体系,采用传统的真空灌注工艺和超声波辅助真空灌注工艺制备复合材料层板,分析不同工艺方法下层板缺陷状况,测试层板的弯曲性能和层间剪切性能,考察树脂性能和纤维/树脂界面黏结状况,探讨碳管及工艺方法对层合板性能的影响.结果表明:与传统的真空罐注工艺相比,超声波辅助真空罐注工艺能增强树脂在纤维内部的流动,提高树脂对纤维的浸润,减少层合板的孔隙缺陷;添加0.05％(质量分数)的CNT后层合板的力学性能提高,使用超声波辅助真空罐注工艺制造的层板性能提高得更为明显;制造工艺对层合板性能的影响与纤维织物的结构紧密相关.%The carbon nanotube (CNT)-glass fiber/epoxy resin laminates were prepared by traditional vacuum assisted resin infusion molding (VARIM) and ultrasonic vacuum resin infusion processing (UVRIP) respectively.The defects of the laminates processed with two processing methods were examined,and the mechanical properties including flexural property and interlaminar shear strength (ILSS) were measured.In addition,the property of the resin and the adhesion between resin and fiber were analyzed.The effects of CNT and processing method on the property of laminates were discussed.The results show that compared with traditional VARIM,the defects in the fiber bundles decrease because the resin fluidity and the resin infiltration are improved in UVRIP.The mechanical properties of the laminates are enhanced by adding 0.05％ mass fraction of CNT,especially for the laminates processed by UVRIP.Moreover,the effect of processing method on the property of laminate is dependent on the structure of the fabric.