Improvement in thermal conductivity of through-plane aligned boron nitride/silicone rubber composites

By Yang Xue, Xiaofei Li, Hao-sheng Wang, F. Zhao, Donghai Zhang, Yunfa Chen. Materials & Design (1980-2015), 2019

163 citations recorded by the source corpus.

Abstract Effective heat dissipation has become a critical issue for electronic devices. In this study, the silicone rubber (SR)/vertically aligned boron nitride (BN) composites were prepared and the thermal conductivity of the composites was systematically investigated. The vertically aligned BNs constructed effective vertical thermal conductive pathways in the SR matrix, and the SR/ABN composites exhibited much higher through-plane thermal conductivity compared to the non-orientated SR/BN composite. The through-plane thermal conductivity of SR/ABN150 reached 5.4 W m−1 K−1, which was ~6.3 and ~33 times higher than those of SR/BN150 and pure SR, respectively. In addition, the surface thermal infrared analysis also indicates that the vertically aligned SR/ABN composites possess excellent heat transfer capacity during the heating and cooling processes. The obtained results exhibit the potential for the design and preparation of thermal interface materials (TIMs) with high through-plane thermal conductivity to be applied in thermal conductive and electrical insulating field.

Subfields: Civil and Structural Engineering, Materials Chemistry, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/29805bc7f56fa361d0f0d9aa0671cd8c4e600c5b

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  7. Jingqi Zhao

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