Journal
ADVANCED MATERIALS INTERFACES
Volume 6, Issue 9, Pages -Publisher
WILEY
DOI: 10.1002/admi.201900081
Keywords
boron nitride; carbon nanotubes; mechanical performance; melt compounding; thermal conductivity
Funding
- National Natural Science Foundation of China (NNSFC) [51873126, 51721091, 51422305]
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1 vol% multiwalled carbon nanotubes (MWCNTs) is finely dispersed in poly(propylene) (PP)/boron nitride (BN) composites with the assistance of commercial ethylene--octene block copolymer (OBC) through a conventional melt-compounding method, whereas serious agglomeration of MWCNTs occurs in the melt compounded PP/MWCNTs/BN composites. The good dispersion of MWCNTs facilitates the formation of a better conductive network to synergistically improve the thermal conductivity of PP/OBC/MWCNT/BN composites, up to 1.71 W m(-1) K-1 at a BN content of 20 vol%. Meanwhile, the elastomeric OBC component leads to markedly enhanced impact toughness (>8.0 kJ m(-2)) and elongation at break (>23%) of the composites. This work sheds light on the fabrication of thermally conductive polymer composites with balanced mechanical performance through a conventional processing technique.
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