화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Macromolecular Research, Vol.22, No.9, 983-989, September, 2014
DOI10.1007/s13233-014-2143-5  Export Citation
Enhanced thermal and mechanical properties of polyimide/graphene composites
Wen Dai1, 2, Jinhong Yu2, 3, †, Yi Wang2, 4, Yingze Song2, 4, Hua Bai2, 4, Kazuhito Nishimura2, 4, Huiwei Liao1, 4, †, and Nan Jiang2, 4, †
  • 1School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, P. R. China
  • 2Key Laboratory of Marine New Materials and Related Technology, Zhejiang Key Laboratory of Marine Materials and Protection Technology, Ningbo Institute of Material Technology & Engineering, Chinese Academy of Sciences, Ningbo, 315201, P. R. China
  • 3Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Ministry of Education, School of Material Science and Engineering, Guilin University of Technology, Guilin, 541004, P. R. China
  • 4, China
E-mail:, ,
Polyimide (PI)/graphene sheets (GSs) composites were prepared by solution blending. The incorporation of GSs into PI increased the thermal conductivity, thermal stability and mechanical properties of PI. The thermal conductivity of PI/GSs composites was significantly improved compared with that of neat PI from 0.254 to 1.002 W/mK; this can be attributed to the homogeneous dispersion of graphene and the formation of heat conduction pathway. Furthermore, the Young modulus of PI/GSs was raised up to 4.04 GPa, approximately two-fold enhancement in comparison with that of neat PI. In addition, the incorportation of GSs in PI indicated excellent optical transparency at the lowest weight fractions of GSs and modified wettability of PI films.
Keywords:polyimide;graphene;composites;thermal properties;mechanical properties
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