Remarkable Mechanical and Thermal Increments of Epoxy Composites by Graphene Nanosheets and Carbon Nanotubes Synergetic Reinforcement

摘要：

　　Graphene nanosheets (GNSs) were modified with aqueous ammonia and hydrogen peroxide, to obtain amine (-NH2) functionalized GNSs (AFGNSs) and enhance the bondings between the GNSs and epoxy matrix.We report an easy and efficient approach to improve the mechanical properties and thermal conductivity of epoxy matrix composites by combining one dimensional multi-walled carbon nanotubes and two dimensional AFGNSs.The long and tortuous MWCNTs can bridge adjacent AFGNSs and inhibit their aggregation, resulting in an increased contact surface area between GNS/MWCNT structures and the polymer.A remarkable synergetic effect between the GNSs and MWCNTs on the enhanced mechanical properties and thermal conductivity of the epoxy composites was demonstrated.The addition of 2 wt.% MWCNT-GNS hybrid fillers improved the tensile strength and flexural strength of the pristine epoxy by 20.71% and 55.51%, respectively.Thermal conductivity increased by 93.71% using MWCNT-GNS hybrid fillers compared to non-derivatised epoxy This study has demonstrated that 2-D GNSs and 1-D MWCNTs have an obvious synergetic reinforcing effect on the mechanical properties and a remarkable thermal conductivity enhancement in epoxy composites which provides an easy and effective way to design and improve the properties of composite materials.

关键词： Graphene Carbon nanotube Synergetic reinforcement Nanocomposites

作者: Xia-Jun Wang Dong-Lin Zhao Dong-Dong Zhang Cheng Li Ran-Ran Yao

作者单位: State Key Laboratory of Chemical Resource Engineering;Key Laboratory of Carbon Fiber and Functional Polymers (Beijing University of Chemical Technology), Ministry of Education;Beijing Engineering Research Center of Environmental Material for Water Purification;Beijing University of Chemical Technology, Beijing 100029, China

会议类型: 国际会议

会议名称: The 2016 China Functional Materials Technology and Industry Forum (2016中国国际功能材料大会暨第九届中国功能材料及其应用学术会议)

会议地点: 重庆

会议语种:英文

页码: 546-552

在线出版日期: 2016-07-25（万方平台首次上网日期，不代表论文的发表时间）