Journal
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
Volume 82, Issue -, Pages 208-213Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2015.12.013
Keywords
Carbon nanotubes and nanofibers; Nanocomposites; Polymer-matrix composites (PMCs); Thermal properties
Funding
- Ministry of Education of the Slovak Republic
- Slovak Academy of Sciences [VEGA 2/0199/14]
Ask authors/readers for more resources
This study aims to investigate experimentally the effects of aspect ratio (length/diameter ratio) and concentration of multiwalled carbon nanotubes (MWCNTs) on thermal properties of high density polyethylene (HDPE) based composites. The aspect ratios of two types of MWCNT fillers are in the range of 200-400 and 500-3000. Composite samples were prepared by melt mixing up to weight fraction of 19% filler content, followed by a compression molding. Measurements of density, specific heat and thermal diffusivity (by modulated photothermal radiometry, PTR) were performed and effective thermal conductivities k(e) of nanocomposites were calculated using these values. The results show that the composites containing MWCNTs with higher aspect ratio have higher thermal conductivities than the ones with lower aspect ratio. In terms of conductivity enhancement k(e)/k(m) - 1, the results indicate that MWCNTs with higher aspect ratio provide three to fourfold larger enhancement than the ones with lower aspect ratio, at low filler concentrations. (C) 2015 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available