摘要
石墨烯/高分子基纳米复合材料因其各项优异性能而备受关注,但关于石墨烯/高分子基纳米复合材料的制备及热膨胀特性的研究尚未成熟,针对这一问题,笔者首先利用超声波分散、行星搅拌及恒温固化等技术制备石墨烯/环氧树脂纳米复合材料,并对制备工艺进行逐步改进,最终得到了一套较为完善的制备工艺。实验中石墨烯的质量分数为1.0%~5.0%。然后对所制备纳米复合材料的导电性进行测试,同时对该纳米复合材料在30~120℃范围内的热膨胀特性进行了测试与分析。研究结果表明:通过添加石墨烯,可得到具有较好导电特性的高分子基复合材料,并可有效降低高分子树脂材料的热膨胀率,且随着石墨烯含量比的增加,纳米复合材料的热膨胀率降低幅度会更大。
Graphene/polymer nanocomposite material has drawn great attentions because of its outstanding physical and mechanical properties.However,study on the fabrication and thermal expansion behaviors of graphene/polymer nanocomposites is far from satisfaction,and this paper is concerned with the problem.Firstly,techniques including ultrasonic dispersion,mixing and stirring,and isothermal curing,etc.,were used to fabricate graphene/epoxy composites.The fabrication technology was progressively optimized and finally more mature.In the experiment,the mass fraction of graphene in the composites was1.0%～5.0%.Thereafter,the conductive property of the fabricated composites was tested,and the thermalexpansion property was measured and analyzed within the temperature range of 30℃to 120℃.The results indicated that,by adding graphene,conductive polymer composites can be obtained.The thermal expansion coefficient of the polymer can be effectively reduced,and it could be reduced to a greater degree with a larger content of graphene added.The present work provides possibility for future fabrication of conductive polymer composites with zero thermal expansion.
作者
胡荣杰
甯尤军
肖藤
雷玲
阿拉木斯
胡宁
HU Rongjie;NING Youjun;XIAO Teng;LEI Ling;Alamusi;HU Ning(School of Manufacturing Science and Engineering, Southwest University of Science and Technology, Mianyang 621010,P.R.China;Department of Engineering Mechanics, College of Aerospace Engineering, Chongqing Key Laboratory of Heterogeneous Material Mechanics, Chongqing University, Chongqing 400044,P.R. China)
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2018年第6期50-57,共8页
Journal of Chongqing University
基金
国家自然科学基金资助项目(11572268
11372104)
四川省青年科技基金项目(2015JQ0043)
西南科技大学校级科研项目(16ycx107
14tdzk03)~~
