石墨烯增强室温硫化硅橡胶复合材料的制备及力学性能  

Fabrication and Mechanical Properties of Graphene Reinforced Room Temperature Vulcanized Silicone Rubber Composites

作　　者：马丹丹[1] 赵东林[1] 张东东[1] 李良昱[1] 何青[1] 张晶星[1] 朱阳阳[1] 

机构地区：[1]北京化工大学,化工资源有效利用国家重点实验室,碳纤维及功能高分子教育部重点实验室,北京100029

出　　处：《高分子材料科学与工程》2013年第10期138-141,共4页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(50672004);国家高技术研究发展计划(863计划)资助项目(2008AA03Z513)

摘　　要：采用机械共混法制备了石墨烯(GNS)/室温硫化硅橡胶(RTV)复合材料。用扫描电镜(SEM)、透射电镜(TEM)、红外光谱(FT-IR)、拉曼光谱(Raman)和X射线衍射(XRD)对GNS的微观结构以及GNS在RTV硅橡胶基体中的分布情况进行了表征和分析,同时研究了GNS/RTV硅橡胶复合材料的力学性能。结果表明,石墨烯在基体硅橡胶中的分布较均匀,极少出现团聚现象;随着填料石墨烯含量的增加,复合材料的拉伸模量逐渐增大,拉伸强度和断裂伸长率均出现极大值后渐渐减少;当石墨烯的质量分数为0.925%时,复合材料的拉伸强度和断裂伸长率均达最大值,分别为0.8387MPa和195.78%,比纯RTV硅橡胶提高了159.86%和55.32%;此时拉伸模量比纯RTV硅橡胶提高了157.44%。Graphene/room temperature vulcanized （RTV） silicone rubber nanocomposites were fabricated＇ by ultrasonication and mechanical blending. The effects of graphene content on the mechanical properties and fracture morphologies of composites were investigated by SEM, TEM, FT-IR, Raman and XRD. The results indicate that that the tensile of the graphene/RTV silicone rubber composites increases first and then decreases with the increasing of graphene addition. When the mass frction of graphene is 0. 925 %, the tensile strength and elongation at break reach the highest value of 0. 8387 MPa and 195.78 % respectively, which are increased by 159.86 % and 55.23 % respectively compared to those of pure RTV. The tensile modulus of the grapheme/RTV silicone rubber composites is increased by 157.44 %.

关 键 词：石墨烯 室温硫化硅橡胶 纳米复合材料 力学性能 

分 类 号：TQ333.93[化学工程—橡胶工业]