POSS/GO复合接枝碳纤维/环氧树脂复合材料性能研究
Study on the properties of POSS/GO composite grafted carbon fiber/epoxy resin composite materials
陈林发 1谢小林 1江洪流 1吴建 1杨至高1
作者信息
- 1. 南昌航空大学材料科学与工程学院,江西南昌 330063
- 折叠
摘要
在碳纤维表面逐层接枝多面体低聚倍半硅氧烷(POSS)和氧化石墨烯(GO)后,将其用于增强环氧树脂(CF/EP)制得复合材料,采用扫描电子显微镜、接触角测试和X射线光电子能谱等研究了 POSS和GO复合接枝碳纤维对CF/EP复合材料力学性能的影响.结果表明,POSS和GO可以显著提高碳纤维的表面活性和比表面积,改善树脂与碳纤维的浸润性、反应性和机械啮合作用,从而提高复合材料的界面性能和力学强度.相比未改性碳纤维复合材料,POSS/GO复合接枝改性碳纤维复合材料的层间剪切强度(ILSS)提高了 98.3％,弯曲强度提高了95.7％.
Abstract
After layer by layer grafting polyhedral oligosisiloxane(POSS)and graphene oxide(GO)onto the surface of carbon fibers,they were used to reinforce epoxy resin(CF/EP)to prepare composite materials.The effect of POSS and GO composite grafted carbon fibers on the mechanical properties of CF/EP composite materials was studied using scanning electron microscopy,contact angle testing,and X-ray photoelectron spectroscopy.The results indicated that POSS and GO could significantly improve the surface activity and specific surface area of carbon fibers,and improve the wettability,reactivity,and mechanical engagement between resin and carbon fibers,thereby improve the interface performance and mechanical strength of composite materials.Compared with unmodified carbon fiber composites,the interlaminar shear strength(ILSS)and flexural strength of the POSS/GO composite grafted modified carbon fiber com-posites were increased by 98.3％and 95.7％,respectively.
关键词
环氧树脂/碳纤维复合材料/低聚倍半硅氧烷/氧化石墨烯/复合接枝/表面改性/界面性能/力学性能Key words
epoxy resin/carbon fiber composite material/polyhedral oligosisiloxane/oxidized graphene/composite grafting/sur-face modification/interface performance/mechanical property引用本文复制引用
出版年
2024
NETL
NSTL
万方数据