• 文献标题:   Composites of Ultrahigh-Molecular-Weight Polyethylene with Graphene Sheets and/or MWCNTs with Segregated Network Structure: Preparation and Properties
  • 文献类型:   Article
  • 作  者:   REN PG, DI YY, ZHANG Q, LI L, PANG H, LI ZM
  • 作者关键词:   conducting polymer, graphene sheet, multiwalled carbon nanotube, segregated network, ultrahighmolecularweight polyethylene
  • 出版物名称:   MACROMOLECULAR MATERIALS ENGINEERING
  • ISSN:   1438-7492
  • 通讯作者地址:   Xian Univ Technol
  • 被引频次:   72
  • DOI:   10.1002/mame.201100229
  • 出版年:   2012

▎ 摘  要

UHMWPE/MWCNT and UHMWPE/GNS composites with a segregated network are prepared. TEM and SEM images indicate that the conducting fillers are distributed on the UHMWPE surface and form a segregated conducting network. The percolation threshold of UHMWPE/GNS composites is approximate to 0.25wt% and that of UHMWPE/MWCNT composites is 0.20wt%. The electrical conductivity of UHMWPE/GNS composites is almost four orders of magnitude lower than that of the UHMWPE/MWCNT composites. For equivalent concentrations of GNS and MWCNT, the composites with hybrid fillers exhibit a lower percolation threshold and a higher conductivity than that with GNS or MWCNT alone. Due to the high strength of the fillers and the segregated network structure, the mechanical properties of the composites first increase and then decrease with increasing filler content.