热致性液晶聚合物/酚醛树脂/氧化石墨烯混杂复合材料的性能研究  

Study on TLCP/PF/GO Hybrid Composites

作　　者：徐伟华[1] 韦春[1] 吕建[1] 苏乐[1] 曾思华[1] 

机构地区：[1]桂林理工大学材料科学与工程学院有色金属及材料加工新技术教育部重点实验室,广西桂林541004

出　　处：《中国塑料》2013年第5期56-59,共4页China Plastics

基　　金：国家自然科学基金(51163003;21264005;51263005)

摘　　要：采用熔融挤出法将热致性液晶聚合物(TLCP)与酚醛树脂(PF)熔融挤出,分别加入改良Hummers法制备的氧化石墨烯(GO)、硅烷偶联剂改性GO(KH550-GO、KH560-GO),制备了TLCP/PF/GO混杂复合材料,研究了加入GO对TLCP/PF/GO混杂复合材料的力学性能、摩擦磨损性能的影响。结果表明,硅烷偶联剂处理的GO能一定程度提高复合材料的摩擦磨损性能和力学性能,特别是TLCP/PF/KH560-GO混杂复合材料的摩擦因数稳定,在150℃和250℃下的体积磨损率分别降低了20.6%和23.1%,材料的冲击强度提高了18.6%。Composites of a thermotropic liquid crystal polymer （TLCP）, phenol formaldehyde （PF）, and silane coupling agent KH550 or KH560 treated graphene oxide were prepared via melting extrusion. The mechanical properties and friction and wear properties of the composites were studied. The abrasion surface of the composites was observed using scanning electron microscope. When graphene oxide was treated with KH560, the volume wear rate of the composites decreased by 20. 6 G and 23. 1% at 150 ℃ and 250 ℃, respectively, the impact strength was increased by 18. 6 %.

关 键 词：氧化石墨烯 热致性液晶 酚醛树脂 混杂复合材料 力学性能 摩擦性能 

分 类 号：TQ323.1[化学工程—合成树脂塑料工业]