改性石墨烯对硅橡胶复合材料的增强及性能的影响  

Effect of Modified Graphene on Reinforcement and Properties of Silicone Rubber Composites

作　　者：张远 唐婉玉 王圭 王腾飞 廖霞[1] Yuan Zhang;Wanyu Tang;Gui Wang;Tengfei Wang;Xia Liao(College of PolymerScience and Engineering,State Key Laboratory of Polymer Materials Engineering,Sichuan University,Chengdu 610065,China)

机构地区：[1]四川大学高分子科学与工程学院高分子材料工程国家重点实验室(四川大学)

出　　处：《高分子材料科学与工程》2019年第9期67-73,81,共8页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(51773138)

摘　　要：利用化学还原性石墨烯(rGO)和3-氨基丙基三乙氧基硅烷改性石墨烯(FG)增强硅橡胶(VMQ)基体,比较了2种石墨烯对硅橡胶复合材料表面硬度、力学性能、压缩形变及压缩回复性能的影响。结果表明,与硅橡胶基体有较好相容性和相互作用的FG使基体强度提高了约6倍,rGO使基体强度提高了约2倍。FG的加入有助于增强复合材料抵抗外部压力的能力,VMQ/FG复合材料的压缩强度(1.40 MPa)分别是纯样品(0.79 MPa)和VMQ/rGO复合材料(1.16 MPa)的177%和120%,VMQ/FG复合材料的拉伸强度和断裂伸长率均高于VMQ/rGO复合材料。VMQ/FG压缩形变与压缩回复性能较好,压缩后可快速恢复(小于0.5 h),永久压缩形变仅为1.5%。The strength of silicone rubber(VMQ) was reinforced by chemical reduced graphene(rGO) and 3-aminopropyltriethoxysilane modified graphene(FG). The effects of two kinds of graphene on the surface hardness, mechanical properties, compression deformation and compression recovery properties of silicone rubber composites were investigated. The results show that FG with a good compatibility and interaction with the silicone rubber matrix increases the strength of the matrix by about 6 times, and rGO increases the strength of the matrix by about 2 times. Moreover, the compressive strength of the VMQ/FG composite(1.40 MPa) is 177% and 120% of that of the pure sample(0.79 MPa) and the VMQ/rGO composite(1.16 MPa), respectively. The compressive deformation of the VMQ/FG composite are better than that of the VMQ/rGO composite. The tensile strength and elongation at break of the VMQ/FG composite are higher than those of the VMQ/rGO composite. The compressive deformation of the VMQ/FG composite can recover quickly after compression(less than 0.5 h) and the permanent compressive deformation is only 1.5%.

关 键 词：改性石墨烯 硅橡胶复合材料 力学性能 压缩形变 压缩回复性能 

分 类 号：TQ333.93[化学工程—橡胶工业]