• 文献标题:   Identical steady tribological performance of graphene-oxide-strengthened polyurethane/epoxy interpenetrating polymer networks derived from graphene nanosheet
  • 文献类型:   Article
  • 作  者:   XIA SL, LIU YL, PEI FY, ZHANG LQ, GAO QJ, ZOU WJ, PENG J, CAO SK
  • 作者关键词:   tribology, graphene, insitu polymerization
  • 出版物名称:   POLYMER
  • ISSN:   0032-3861 EI 1873-2291
  • 通讯作者地址:   Zhengzhou Univ
  • 被引频次:   20
  • DOI:   10.1016/j.polymer.2015.03.036
  • 出版年:   2015

▎ 摘  要

Graphene-oxide-hybrided polyurethane/epoxy interpenetrating polymer networks (PU/EP IPNs) are prepared through an in-situ polymerization. The results showed that the mechanical performance of graphene-oxide-hybrided PU/EP IPNs is improved due to the formation of chemical bonds between graphene oxide nanosheet and polyurethane/epoxy segments, affording the loading transfer from polymer matrix to graphene oxide nanosheet The average friction coefficient in the steady stage is decreased about 30.2% from neat PU/EP IPN to graphene-oxide-hybrided PU/EP IPNs. Especially, the specific wear rate is decreased about two orders of magnitude from neat PU/EP IPN to graphene-oxide-hybrided PU/EP IPNs. Interestingly, graphene-oxide-hybrided PU/EP IPNs have the same friction coefficient in the steady stage, independent of graphene oxide content. The identical steady friction coefficients are derived from the same friction bodies in three-body friction model, such as grapheneoxide-strengthened PU/EP IPN surface, metallic counterpart and graphene-oxide-wrapping polymer particles as wear debris in the transfer film. (C) 2015 Elsevier Ltd. All rights reserved.