High thermal conductive composites based on flake graphite filled in a partial compatible polyamide 6/polypropylene

Autor: Yinfeng Liu, Xiaodong Chen, Zhou Haidi, Huagen Xu
Rok vydání: 2015
Předmět:
Zdroj: Polymer Science Series A. 57:644-655
ISSN: 1555-6107
0965-545X
DOI: 10.1134/s0965545x1505017x
Popis: In this study, a series of thermally conductive materials was obtained based on flake graphite (FG) filled in a partially compatible system of polyamide 6 (PA6)/polypropylene (PP) blends at a loading of 30 wt % of FG. The thermal conductivity of PA6/PP/FG composites containing 1 wt % of the compatibilizer PP-graft-maleic anhydride (MAH) reached 2.703 W/(m K). The SEM images show that FG formed a long thermally conductive pathway in the partially compatible system. The result of Fourier transform infrared analysis indicates that the compatibilizer changes the compatibility between PA6 and PP and affects the distribution of FG. The crystallization behavior of the composites studied by X-ray diffraction and differential scanning calorimetry further proved that the filler in the composites distributed rationally. The impact strength and dynamic mechanical analysis confirmed that when the compatibilizer content was 1 wt %, the system was in a partially compatible state. The dynamic rheology of the composites was also studied to understand the effect of the distribution of FG on the conductivity of the composites.
Databáze: OpenAIRE
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