Journal
RSC ADVANCES
Volume 5, Issue 46, Pages 36334-36339Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra03284a
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Funding
- Foundation of Natural Science Foundation of China [51403175, 81400765]
- Shaanxi National Science Foundation of Shaanxi Province [2014JQ6203]
- Space Supporting Fund from China Aerospace Science and Industry Corporation [2014-HT-XGD]
- Fundamental Research Funds for the Central Universities [3102015ZY066]
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High thermal conductivity graphite nanoplatelet/ultra-high molecular weight polyethylene (GNPs/ UHMWPE) nanocomposites are fabricated via mechanical ball milling followed by a hot-pressing method. The GNPs are located at the interface of the UHMWPE matrix. The thermal conductivity coefficient of the GNPs/UHMWPE nanocomposite is greatly improved to 4.624 W m(-1) K-1 with 21.4 vol% GNPs, 9 times higher than that of the original UHMWPE matrix. The significantly high improvement of the thermal conductivity is ascribed to the formation of multidimensional thermally conductive GNPs-GNPs networks, and the GNPs have a strong ability to form continuous thermally conductive networks. The method of cooling-pressing on the machine is more beneficial for the improvement of the thermal conductivity, by increasing the crystallinity of the UHMWPE matrix. Furthermore, the thermal stabilities of the GNPs/UHMWPE nanocomposites are increased with increasing addition of GNPs.
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