石墨烯纳米复合材料热膨胀特性的理论研究  

Theoretical Prediction of Thermal Expansion Properties of Graphene Nanocomposites

作　　者：雷玲 肖藤 刘聪 刘海东 阿拉木斯 李谦 宁慧铭[3] LEI Ling;XIAO Teng;LIU Cong;LIU Hai-dong;A La-mu-si;LI Qian;NING Hui-ming(Key Laboratory of Testing Technology for Manufacturing Process,Ministry of Education,School of Manufacturing Science and Engineering,Southwest University of Science and Technology,Mianyang 621010,China;China Bluestar Chengrand Co.,Ltd.,Chengdu 610041,China;College of Aerospace Engineering,Chongqing University,Chongqing 400044,China)

机构地区：[1]西南科技大学制造科学与工程学院制造过程测试技术教育部重点实验室,四川绵阳621010 [2]中蓝晨光化工研究设计院有限公司,四川成都610041 [3]重庆大学航空航天学院,重庆400044

出　　处：《塑料工业》2019年第8期76-80,共5页China Plastics Industry

基　　金：国家自然科学基金(11572268);龙山计划(18lzx422);四川省重大科技成果转化示范项目(2018CC00224);四川省教育厅重点项目(16ZAO137)

摘　　要：采用基于Eshelby-Mori-Tanaka方法的数学模型,对石墨烯纳米复合材料的热膨胀特性进行了理论研究。将石墨烯的形状视为扁椭球形并将其取向随机分布,建立了一种可计算两相石墨烯纳米复合材料热膨胀系数的数学模型。最后,通过与环氧树脂/石墨烯纳米复合材料的热膨胀系数的实验结果进行比较,验证该理论研究的准确性。结果表明,添加石墨烯可有效降低纳米复合材料的热膨胀系数,且纳米复合材料的热膨胀系数受石墨烯的含量、团聚效应和网络结构等因素的影响。In this paper,a model based on Eshelby-Mori-Tanaka had been established and used to study the thermal expansion of graphene nanocomposites.The shape of graphene was simplified to a flat ellipsoid and its orientation was randomized.And the model for calculating the thermal expansion coefficient of graphene nanocomposites was established.Finally,comparing the thermal expansion coefficient of graphene/epoxy nanocomposites with graphene nanocomposites,the accuracy of this theoretical research was verified.The results show that graphene could effectively reduce the thermal expansion coefficient of composites,and the thermal expansion coefficient of composites is affected by the contents of graphene,the agglomeration effect and the network structure of graphene.

关 键 词：石墨烯 热膨胀特性 纳米复合材料 Eshelby-Mori-Tanaka方法 

分 类 号：TQ320.1[化学工程—合成树脂塑料工业]