Densely Interconnected Porous BN Frameworks for Multifunctional and Isotropically Thermoconductive Polymer Composites

Yanming Xue, Xin Zhou, Tianzhuo Zhan, Baozhen Jiang, Quansheng Guo, Xiuwei Fu, Kiyoshi Shimamura, Yibin Xu, Takao Mori, Pengcheng Dai, Yoshio Bando, Chengchun Tang, Dmitri Golberg

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Ideal materials for modern electronics packaging should be highly thermoconductive. This may be achieved through designing multifunctional polymer composites. Such composites may generally be achieved via effective embedment of functional inorganic fillers into desirable polymeric bodies. Herein, two types of high-performance 3D h-BN porous frameworks (3D-BN), namely, h-BN nanorod-assembled networks and nanosheet-interconnected frameworks, are successfully created via an in situ carbothermal reduction chemical vapor deposition substitution reaction using carbon-based nanorod-interconnected networks as templates. These 3D-BN porous materials with densely interlinked frameworks, excellent mechanical robustness and integrity, highly isotropous and multiple heat transfer paths, enable reliable fabrications of diverse 3D-BN/polymer porous composites. The composites exhibit combinatorial multifunctional properties, such as excellent mechanical strength, light weight, ultralow coefficient of thermal expansion, highly isotropic thermal conductivities (≈26–51 multiples of pristine polymers), relatively low dielectric constants and super-low dielectric losses, and high resistance to softening at elevated temperatures. In addition, the regarded 3D-BN frameworks are easily recycled from their polymer composites, and may be reliably reutilized for multifunctional reuse. Thus, these materials should be valuable for new-era advanced electronic packaging and related applications.

Original languageEnglish
Article number1801205
JournalAdvanced Functional Materials
Volume28
Issue number29
DOIs
Publication statusPublished - 2018 Jul 18

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Keywords

  • BN porous frameworks
  • dielectric properties
  • isotropic thermal conductivities
  • porous polymer composites
  • thermal expansions

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Xue, Y., Zhou, X., Zhan, T., Jiang, B., Guo, Q., Fu, X., Shimamura, K., Xu, Y., Mori, T., Dai, P., Bando, Y., Tang, C., & Golberg, D. (2018). Densely Interconnected Porous BN Frameworks for Multifunctional and Isotropically Thermoconductive Polymer Composites. Advanced Functional Materials, 28(29), [1801205]. https://doi.org/10.1002/adfm.201801205