期刊
POLYMERS FOR ADVANCED TECHNOLOGIES
卷 31, 期 10, 页码 2351-2359出版社
WILEY
DOI: 10.1002/pat.4954
关键词
aspect ratio; copper nanowires; thermal conductivity; thermal management; vertically aligned network
资金
- Korea Basic Science Institute [2019R1A6C1010047]
- National Research Foundation of Korea [2017R1A2B4005200]
- National Research Foundation of Korea [2017R1A2B4005200] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The composites comprising vertically aligned network of copper nanowires (CuNWs) in the presence of cellulose nanofibers were fabricated by using the freeze-templating method and the effect of aspect ratio (A/R) of CuNWs on the thermal conductivity of epoxy composites was investigated. The thermal conductivity of epoxy composites increased to 0.79 W m(-1) K-1 at 1.12 vol% of high A/R CuNWs loading, corresponding to the thermal conductivity enhancement of 365% as compared to the pure epoxy. The thermal conductivity of vertically aligned higher A/R CuNWs/epoxy, which is 38.5% and 51.9% higher than those of the lower A/R CuNWs and the randomly aligned CuNWs, respectively. The application of the epoxy composites in heat dissipation was demonstrated by the temperature changes of composites on a hot plate with the increase of heating time. These results indicate that the thermally conductive composites in this study could be applied for thermal dissipating materials in electronic devices.
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