期刊
POLYMERS
卷 11, 期 6, 页码 -出版社
MDPI
DOI: 10.3390/polym11061073
关键词
thermal properties; electrical properties; polymer-matrix composites (PMCs); carbon nanotubes
资金
- German Federal Ministry of Education and Research (BMBF) [01LY1307]
Melt-mixed composites based on polypropylene (PP) with various carbon-based fillers were investigated with regard to their thermal conductivity and electrical resistivity. The composites were filled with up to three fillers by selecting combinations of graphite nanoplatelets (GNP), carbon fibers (CF), carbon nanotubes (CNT), carbon black (CB), and graphite (G) at a constant filler content of 7.5 vol%. The thermal conductivity of PP (0.26 W/(mK)) improved most using graphite nanoplatelets, whereas electrical resistivity was the lowest when using multiwalled CNT. Synergistic effects could be observed for different filler combinations. The PP composite, which contains a mixture of GNP, CNT, and highly structured CB, simultaneously had high thermal conductivity (0.5 W/(mK)) and the lowest electrical volume resistivity (4 Ohmcm).
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