期刊
MACROMOLECULAR MATERIALS AND ENGINEERING
卷 297, 期 5, 页码 437-443出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/mame.201100229
关键词
conducting polymers; graphene sheets; multi-walled carbon nanotubes; segregated networks; ultrahigh-molecular-weight polyethylene
资金
- National Outstanding Youth Foundation of China [50925311]
- National Foundation of China [51073128]
- Xi'an University of Technology [104-210906]
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.
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