期刊
ACS APPLIED NANO MATERIALS
卷 2, 期 1, 页码 360-368出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsanm.8b01939
关键词
boron nitride nanosheets; thermal conductivity; antistatic; composites; PDMS
资金
- National Natural Science Foundation of China [51573201]
- NSFC-Zhejiang Joint Fund for the Integration of Industrialization and Informatization [U1709205]
- Public Welfare Project of Zhejiang Province [2016C31026]
- Scientific Instrument Developing Project of the Chinese Academy of Sciences [YZ201640]
- Project of the Chinese Academy of Sciences [KFZD-SW-409]
- Science and Technology Major Project of Ningbo [2016S1002, 2016B10038]
Efficient heat dissipation is a prerequisite for further improving the integration of devices. However, the polymer composites are not satisfying heat dissipation. For that reason, high-thermal-transport channels were E manufactured by the direct freezing method and boron nitride nanosheets (BNNS) were further welded by carbonization. Composites with high thermal conductivity (7.46 W m(-1) K-1) were obtained by immersion in poly-(dimethylsiloxane) (PDMS). Thermal conductivity enhancement of composites reached about 3900% at 15.8 vol % loading of BNNS. Besides, the composites maintained the structural flexibility of PDMS and allowed repeated bending and twisting. In addition, the PDMS composites exhibited excellent antistatic properties because of a conductive network formed by residual carbon. Therefore, dust could be avoided and the surface kept clean. This provides a better choice for thermal management materials and meets the antistatic requirements of the devices.
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