Fabrication and characterization of micro-nano AlN co-filled PTFE composites with enhanced thermal conductivity: a morphology-promoted synergistic effect.

Autor: Pan, Chen, Kou, Kaichang, Jia, Qian, Zhang, Yu, Wang, Yiqun, Wu, Guanglei, Feng, Ailing
Předmět:
Zdroj: Journal of Materials Science: Materials in Electronics; Nov2016, Vol. 27 Issue 11, p11909-11916, 8p
Abstrakt: In this study, micro-nano AlN co-filled PTFE composites were prepared by powder processing technique to obtain high performance electronic packaging materials with high thermal conductivity and outstanding thermal stability. The synergistic effect of micro-size and nano-size AlN particles on the thermal, mechanical, dielectric properties of the composites is systematically investigated. The SEM images indicate that nano-size AlN particles are filled into the interspaces between micro-size AlN particles, resulting in a tightly stacked structure in the composites. Compared with the PTFE composites with single-size AlN, the composites filled by 0.3 V micro-nano AlN display higher thermal conductivity (0.84 W/mK), and the thermal stability and mechanical properties of the composites are also enhanced. Meanwhile, the composites exhibit excellent dielectric properties: the maximum dielectric constant is 4.4 and dielectric loss is 0.0035 at 100 Hz. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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