相关链接
联系方式
  • 通信地址:浙江省宁波市钱湖南路1号
  • 邮编:315100
  • 电话:+8657488130132
  • 传真:0574-88130130
  • Email:zpfang@zju.edu.cn
当前位置:> 首页 > 最新动态 > 正文
Improved flame resistance and thermo-mechanical properties of epoxy resin nanocomposites from functionalized graphene oxide via self-assembly in water入选中国百篇最具影响国际学术论文

浙大宁波理工学院高分子共混与复合改性研究室博士研究生方芳为第一作者,冉诗雅/宋平安为通讯作者的论文Improved flame resistance and thermo-mechanical properties of epoxy resin nanocomposites from functionalized graphene oxide via self-assembly in water(Fang F, Ran SY*, Fang ZP, Song PA*, Wang H. Composites B, 2019.5, 165: 406-416)入选2019年中国百篇最具影响国际学术论文。以下为该文的摘要:

The development of a green and facile strategy for fabricating ecofriendly, highly effective flame retardants has remain a major challenge. Herein, supermolecular aggregates of piperazine (PiP) and phytic acid (PA) have been self-assembled onto the graphene oxide (GO) surface in water to fabricate functionalized GO (PPGO). The chemical structure and morphology of PPGO are determined by the X-ray photoelectron spectroscopy, transmission electron microscopy and scanning electron microscopy along with the energy dispersive spectroscopy. Due to the introduction of organic component onto the surface of graphene oxide, the adhesion between PPGO and the epoxy resin (EP) matrix is enhanced. As a result, the storage modulus (E′) of EP composites is increased in addition to a better dispersion of PPGO. Compared with the pure EP, the flame resistance of EP/PPGO is significantly improved, exhibiting a 42% decrease in peak heat release rate (pHRR), 22% reduction in total heat release (THR). The reduced flammability of EP is attributed to the synergistic effects afforded by the gas dilution effect of piperazine, char-forming promotion effect of phytic acid and the creation of "tortuous path" barrier effect of GO during burning. This work offers a green and facile approach for creating highly effective graphenebased flame retardants.