• 文献标题:   Mechanical and Thermal Properties of Epoxy Composites Containing Graphene Oxide and Liquid Crystalline Epoxy
  • 文献类型:   Article
  • 作  者:   QI B, YUAN ZK, LU SR, LIU K, LI SR, YANG LP, YU JH
  • 作者关键词:   epoxy resin, liquid crystalline epoxy, graphene oxide, mechanical property, thermal property
  • 出版物名称:   FIBERS POLYMERS
  • ISSN:   1229-9197 EI 1875-0052
  • 通讯作者地址:   Guilin Univ Technol
  • 被引频次:   32
  • DOI:   10.1007/s12221-014-0326-5
  • 出版年:   2014

▎ 摘  要

The graphene oxide (GO) sheets are chemically grafted with gamma-etheroxygentrimethoxysilane (KH560) and liquid crystalline epoxy (LCE) is synthesized from 4,4'-bis(2-hydroxyhexoxy)biphenyl (BP2) and epichlorohydrin before being incorporated into epoxy matrix. Then we present a novel approach to the fabrication of advanced polymer composites from epoxy matrix by incorporation of two modifiers, which are grafted GO (g-GO) and LCE. The mechanical properties of epoxy composites are greatly improved by incorporating LCE/g-GO hybrid fillers. For instance, the addition of 3 wt% hybrid filler (2 wt% g-GO and 1 wt% LCE) into the epoxy matrix resulted in the increases in impact strength by 132.6 %, tensile strength by 27.6 % and flexural strength by 37.5 %. Moreover, LCE/g-GO hybrid fillers are effective to increase thermal decomposition temperature, glass transition temperature, and storage modulus by strong affinity between the fillers and epoxy matrix.