期刊
MACROMOLECULAR RESEARCH
卷 26, 期 7, 页码 602-608出版社
SPRINGER
DOI: 10.1007/s13233-018-6090-4
关键词
dielectric properties; thermal conductivity; composites; hexagonal boron nitride
资金
- National Natural Science Foundation [51373028, 51403029]
- South Wisdom Valley Innovative Research Team Program
The thermal conductive cyanate ester/epoxy (CE/AG80) composites with hexagonal boron nitride (h-BN) reinforced were manufactured and investigated. The low and stable dielectric constant/loss of the composites with respect to both frequency (500 Hz-100 kHz) and temperature (50-350 A degrees C) were discussed as functions of the content of h-BN. It was found that the low and stable dielectric constant/ loss of the composites can be maintained in the whole frequency range at room temperature, and the mutations of constant/loss at the frequency of 1 kHz occurred above 280 A degrees C for all of the samples. Moreover, a remarkable enhancement of the thermal conductivity (0.54 W/mK a 1.8-fold enhancement) was achieved with the introduction of h-BN and significantly outperformed traditional thermal conductive fillers. The significant improvements of the thermal conductivity of the composites were analyzed by the Agari's model and the parameters of C (1) and C (2) were also calculated.
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