Affiliation:
1. Key Lab of Photovoltaic and Energy Conservation Materials, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, China
2. University of Science and Technology of China, Hefei, China
Abstract
Studies have shown that the construction of a three-dimensional interconnected filler network is an effective method to improve the thermal conductivity of the through-plane under a lower filler load. However, huge challenges still exist in building a long-range layered filler network and reducing the thermal resistance resulting from contact between fillers and matrix. In this work, boron nitride nanosheets (BNNSs) were proposed to be connected with modified cellulose nanofibers (CNFs) to obtain a long-range layered structure filler skeleton by bidirectional freezing orientation. Then epoxy resin was dipped under vacuum condition to prepare composite with thermal conductivity up to 1.43 W/mK in through-plane when filler content is 4.3 vol%, and the composite had low thermal expansion coefficient of 64.1 ppm/°C and excellent volume resistivity up to 3.7 × 1012 Ω cm at the same time.
Funder
National Key R&D Program of China
Chinese Academy of Science
Science and Technology Service Network Initiative of the Chinese Academy of Sciences
Key deployment project of the Chinese Academy of Sciences
Science and Technology Cooperation Project of Sichuan Province and the Chinese Academy of Sciences
Youth Innovation Promotion Association
Major science and technology projects of Anhui Province
Subject
Materials Chemistry,Organic Chemistry,Polymers and Plastics
Cited by
3 articles.
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