Systematic studies with the preparation of silicone/graphene composites corresponding to their thermal and mechanical properties are carried out under various conditions: intensity of magnetic field, time, temperature, fillings. The effect of MWCNT/graphene content and preparation procedures on thermal conductivity of composites is investigated. Dynamic mechanical analysis (DMA) is used to reveal the mechanical properties of the composites in terms of the filling contents and magnetic field strength. The scanning electron microscope (SEM) is used to observe the micro-structure of the MWCNT composites. The alignment of MWCNTs in PDMS matrix is also studied by Raman spectroscopy. The thermal conductivity measurements show that the magnetically aligned CNT-composites feature high anisotropy in thermal conductivity.
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Bin Li, Shuai Dong, Caiping Wang, Xiaojie Wang, Jun Fang, "Anisotropic thermal property of magnetically oriented carbon nanotube polymer composites," Proc. SPIE 9800, Behavior and Mechanics of Multifunctional Materials and Composites 2016, 98000A (18 April 2016);