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石墨烯/环氧树脂纳米复合材料的制备与热膨胀特性分析
胡荣杰1, 甯尤军1, 肖藤1, 雷玲1, 阿拉木斯1, 胡宁2
1.西南科技大学 制造科学与工程学院, 四川 绵阳 621010;2.重庆大学 航空航天学院, 重庆 400044
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。
关键词:  石墨烯  石墨烯/环氧树脂纳米复合材料  制备  热膨胀特性  零热膨胀材料
DOI:10.11835/j.issn.1000-582X.2018.06.006
分类号:
基金项目: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)。
Fabrication and thermal expansion property study of graphene/epoxy nanocomposites
HU Rongjie1, NING Youjun1, XIAO Teng1, LEI Ling1, Alamusi1, HU Ning2
1.School of Manufacturing Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, P. R. China;2.Department of Engineering Mechanics, College of Aerospace Engineering, Chongqing Key Laboratory of Heterogeneous Material Mechanics, Chongqing University, Chongqing 400044, P. R. China
Abstract:
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 was 1.0%~5.0%. Thereafter, the conductive property of the fabricated composites was tested,and the thermal expansion 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.
Key words:  graphene  graphene/epoxy nanocomposite  fabrication  thermal expansion property  zero thermal expansion material
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