Improved Thermal Conductivity and Flame Retardancy in Polystyrene/Poly(vinylidene fluoride) Blends by Controlling Selective Localization and Surface Modification of SiC Nanoparticles

Abstract : The effect of selective localization of silicon carbide (SiC) and polystyrene (PS)-coated SiC (p-SiC) nanoparticles on the thermal conductivity and flame retardancy of immiscible PS/poly(vinylidene fluoride) (PVDF) blends has been systematically studied. The scanning electron microscopy (SEM) images reveal that SIC and p-SiC nanoparticles have different selective localizations in the PS/PVDF blends. The melting and crystallization behaviors of the PVDF component investigated by using differential scanning calorimetry are consistent with the SEM results. To reduce the volume fraction of fillers in the composites, a cocontinuous structure of PS/PVDF has also been built up. The cocontinuity window for PS/PVDF blends is similar to 30-70 vol % according to the selective solvent dissolution technique. The selective localization of SiC in the PVDF phase of the PS/PVDF 70/30 blends produces a slightly higher thermal conductivity than that of p-SiC in the PS phase of the PS/PVDF 30/70 blends. However, the composites with selective localization of p-SiC exhibit the best combined properties of thermal conductivity and flame retardancy.
Type de document :
Article dans une revue
ACS Applied Materials & Interfaces, Washington, D.C. : American Chemical Society, 2013, 5 (15), pp.6915-6924. 〈10.1021/am401703m〉
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https://hal.univ-lorraine.fr/hal-01282100
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Soumis le : jeudi 3 mars 2016 - 11:53:44
Dernière modification le : jeudi 11 janvier 2018 - 06:25:27

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Jian-Ping Cao, Xiaodong Zhao, Jun Zhao, Jun-Wei Zha, Guo-Hua Hu, et al.. Improved Thermal Conductivity and Flame Retardancy in Polystyrene/Poly(vinylidene fluoride) Blends by Controlling Selective Localization and Surface Modification of SiC Nanoparticles. ACS Applied Materials & Interfaces, Washington, D.C. : American Chemical Society, 2013, 5 (15), pp.6915-6924. 〈10.1021/am401703m〉. 〈hal-01282100〉

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