Polymer Composite with Improved Thermal Conductivity by Constructing a Hierarchically Ordered Three-Dimensional Interconnected Network of BN
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AbstractIn this work, we report a fabrication of epoxy resin/ordered three-dimensional boron nitride (3D-BN) network composites through combination of ice-templating self-assembly and infiltration methods. The polymer composites possess much higher thermal conductivity up to 4.42 W m–1 K–1 at relatively low loading 34 vol % than that of random distribution composites (1.81 W m–1 K–1 for epoxy/random 3D-BN composites, 1.16 W m–1 K–1 for epoxy/random BN composites) and exhibit a high glass transition temperature (178.9–229.2 °C) and dimensional stability (22.7 ppm/K). We attribute the increased thermal conductivity to the unique oriented 3D-BN thermally conducive network, in which the much higher thermal conductivity along the in-plane direction of BN microplatelets is most useful. This study paves the way for thermally conductive polymer composites used as thermal interface materials for next-generation electronic packaging and 3D integration circuits.
Acceptance Date31/03/2017
All Author(s) ListJiantao Hu, Yun Huang, Yimin Yao, Guiran Pan, Jiajia Sun, Xiaoliang Zeng, Rong Sun, Jian-Bin Xu, Bo Song, Ching-Ping Wong
Journal nameACS Applied Materials and Interfaces
Volume Number9
Issue Number15
Pages13544 - 13553
LanguagesEnglish-United States
Keywordsboron nitride, ordered network, polymer composites, thermal conductivity, thermal interface resistance

Last updated on 2020-29-10 at 01:56