期刊
NATURE MATERIALS
卷 14, 期 3, 页码 295-300出版社
NATURE PORTFOLIO
DOI: 10.1038/NMAT4141
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资金
- US Department of Energy (DOE), Office of Basic Energy Sciences, Center for Solar and Thermal Energy Conversion in Complex Materials, an Energy Frontier Research Center [DE-SC0000957]
- Converging Research Center Program - Ministry of Science, ICT and Future Planning [2014M3C1A8048791]
- University of Michigan Energy Institute
- National Research Foundation of Korea [2014M3C1A8048791] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Thermal conductivity is an important property for polymers, as it often affects product reliability (for example, electronics packaging), functionality (for example, thermal interface materials) and/or manufacturing cost(1). However, polymer thermal conductivities primarily fall within a relatively narrow range (0.1-0.5 Wm(-1) K-1) and are largely unexplored. Here, we show that a blend of two polymers with high miscibility and appropriately chosen linker structure can yield a dense and homogeneously distributed thermal network. A sharp increase in cross-plane thermal conductivity is observed under these conditions, reaching over 1.5 Wm(-1) K-1 in typical spin-cast polymer blend films of nanoscale thickness, which is approximately an order of magnitude larger than that of other amorphous polymers.
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