Flexible h-BN foam sheets for multifunctional electronic packaging materials with ultrahigh thermostability

Soft Matter
Deul KimJihoon Choi

Abstract

Recently developed electronic packaging materials based on low dimensional materials such as carbon nanotubes, graphene, and hexagonal boron nitride (h-BN) exhibit advantageous electrical, thermal, and mechanical properties for protecting electronic devices as well as dissipating heat flux from highly integrated circuits or high power electronic devices. Their thermal transport is mainly achieved by precise control of the nanostructure for nano-fillers to form the thermally conductive pathway. However, due to the viscoelastic behaviors of host polymeric materials, their phase or structural stability is significantly reduced by enhanced molecular motion at high temperature, resulting in poor thermal transport and mechanical strength. Here, we introduce flexible and robust h-BN foam sheets with a three-dimensional network structure, which exhibit much enhanced thermostability at high temperature. Furthermore, the additional infiltration of Fe3O4 nanoparticles into those structures results in relatively high electromagnetic absorbing performance. The combination of thermostability and mechanical strength based on the h-BN foam sheets provides novel opportunities for multifunctional thermally conductive materials in coatings and fi...Continue Reading

References

Nov 30, 2004·Nature Materials·Jongnam ParkTaeghwan Hyeon
Nov 4, 2005·Nature Materials·Takashi KashiwagiJohn R Shields
May 14, 2010·ACS Nano·Dmitri GolbergChunyi Zhi
Aug 24, 2010·Nature Nanotechnology·C R DeanJ Hone
Oct 29, 2013·ACS Applied Materials & Interfaces·Seunggun YuChong Min Koo
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May 16, 2015·Scientific Reports·Yangxi SongXiaoming Xie
Feb 18, 2017·Physical Review. E·Kelsey MeeksMichelle L Pantoya

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Citations

May 19, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Richa AgrawalClaudia C Luhrs
Mar 13, 2021·ACS Nano·Sandeep AhankariHanieh Kargarzadeh

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