期刊
MATERIALS
卷 14, 期 16, 页码 -出版社
MDPI
DOI: 10.3390/ma14164601
关键词
epoxy resin; liquid rubber; thermally conductive nanofiller; relaxation polarization
类别
资金
- Natural Science Basic Research Plan in Shaanxi Province of China [2018JQ5039]
- China Postdoctoral Science Foundation [2020M673450]
This study investigates the effects of thermally conductive nanofillers on relaxation behaviors and thermal conductivity of epoxy/carboxyl-terminated liquid nitrile-butadiene rubber composites. Results show that different nanofillers introduce different relaxation processes into the matrix and increase heat conductivity simultaneously, providing a theoretical basis for the synergistic improvement of multiple properties of epoxy resin composites.
Epoxy composite materials are widely used in power equipment. As the voltage level increases, the requirement of material properties, including electrical, thermal, and mechanical, has also increased. Introducing thermally conductive nanofiller to the epoxy/liquid rubber composites system is an effective approach to improve heat performance, but the effects of thermally conductive nanofillers on relaxation characteristics remain unclarified. In this paper, nano-alumina (nano-Al2O3) and nano-boron nitride (nano-BN) have been employed to modify the epoxy/carboxyl-terminated liquid nitrile-butadiene rubber (epoxy/CTBN) composites system. The thermal conductivity and glass transition temperature of different formula systems have been measured. The effect of the nanofillers on the relaxation behaviors of the resin matrix has been investigated. Results show that the different kinds of nanofillers will introduce different relaxation processes into the matrix and increase the conductivity at the same time. This study can provide a theoretical basis for the synergistic improvement of multiple properties of epoxy resin composites.
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