氧化石墨烯的功能化及对双马复合材料的改性

Modification of Carbon Fiber/BMI Composites by Using Functionalized Graphene Oxide

选用γ-甲基丙烯酰氧基丙基三甲氧基硅烷(KH570)对氧化石墨烯(GO)进行表面功能化修饰,考察了硅烷功能化氧化石墨烯(KH570-GO)对碳纤维/双马来酰亚胺(BMI)复合材料层间剪切强度的影响。实验结果表明,KH570硅烷分子成功地接枝到GO表面,碳纤维/BMI复合材料的界面黏结性能得到改善,当KH570-GO含量的为0.1wt%时,复合材料的层间剪切强度提高了26.6%。

The graphene oxide （GO） was functionalized by the silane coupling agent γ-methacryloxypropyhrimethox- ysilane （KH570）. The effect of silane functionalized GO on the interfacial properties of the carbon fiber/BMI composites was investigated. The results indicated that the KH570 molecules were successfully grafted onto the GO surfaces. The interracial adhesive properties of carbon fiber/BMI composites were improved. The maximum increment of the interlaminar shear strength of the carbon fiber/BMI composite was 26. 6% when the content of KH570-GO was 0. 1%.