期刊
ACS APPLIED MATERIALS & INTERFACES
卷 12, 期 1, 页码 1436-1443出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.9b15993
关键词
graphene oxide nanosheets; boron nitride nanotubes; aerogels; epoxy nanocomposites; thermal conductivity
资金
- National Natural Science Foundation of China [51577185, 51522705]
- National Key Research and Development Program of China [2016YFC0304505, 2017YFE0301403]
- Strategic Priority Research Program of Chinese Academy of Sciences [XDB25040300]
- Key Research Program of Frontier Sciences of Chinese Academy of Sciences [QYZDB-SSW-JSC042]
- President's International Fellowship Initiative [2019VEA0017]
- National program for support of top-notch Young professionals
- Youth Innovation Promotion Association of Chinese Academy of Sciences [2013020]
Thermally conductive polymeric composites are highly promising in current energy devices such as light-emitting diodes, integrated circuits, and solar cells to achieve appropriate thermal management. However, the introduction of traditional thermoconductive fillers into a polymer usually results in low thermal conductivity enhancement. Here, an ideal dielectric epoxy nanocomposite with ultrahigh thermal conductivity is successfully fabricated using three-dimensional interconnected boron nitride nanotube reinforced graphene oxide nanosheet (3D-BNNT-GONS) aerogels as fillers. The nanocomposite exhibits a nearly 20-fold increase in thermal conductivity with only 11.6 vol % loading fraction. Meanwhile, the nanocomposite possesses excellent insulation performance, including low dielectric constant, low dielectric loss, and high breakdown strength. A heating and cooling process reveals that the nanocomposite has a fast response of surface temperature, indicating high thermal management capability.
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