期刊
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
卷 43, 期 4, 页码 658-664出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2011.11.024
关键词
Polymer matrix composites (PMCs); Thermal properties; Electrical properties; Thermal analysis
资金
- National Science Foundation of China [51073180]
- China Postdoctoral Science Foundation [20070421113, 200801434]
- Shaanxi Provincial Education Commission [2010JK694]
- Scientific Research Foundation of Xi'an University of Science and Technology [2010QDJ035]
Polymeric composites with relatively high thermal conductivity, high dielectric permittivity, and a low dissipation factor are obtained in the present study. Three types of core-shell-structured aluminum (Al) particles are incorporated in poly(vinylidene fluoride) (PVDF) by melt-mixing and hot-pressing processes. The morphological, thermal, and dielectric properties of the composites are characterized using thermal analysis, a scanning electron microscope, and a dielectric analyzer. The results indicate that the Al particles decrease the degree of crystallinity of PVDF, and that the particle size and shape of the filler affect the thermal conductivity and dielectric properties of Al/PVDF. No variation in the dissipation factor is observed up to 60 wt.% Al. Thermal conductivity and dielectric permittivity values as high as 1.65 W/m K and 230, respectively, as well as a low dissipation factor of 0.25 at 0.1 Hz, are realized for the composites with 80 wt.% spherical Al. (c) 2012 Elsevier Ltd. All rights reserved.
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