Effects of silicone rubber (SR) on the isothermal crystallization kinetics, non-isothermal crystallization kinetics, crystal structure, spherulitic morphology, rheological properties and mechanical properties of dynamically vulcanized poly(vinylidene fluoride) (PVDF)/SR blends were investigated. Relative to the pure PVDF, incorporation of SR component has not only enhanced the non-isothermal crystallization rates of PVDF in the blends at the same cooling rate, but also increased the isothermal crystallization rates at the same crystallization temperature. The crystalline structure does not change for PVDF/SR blends. The poor interfacial adhesion and poor compatibility between the two phases play a critical role in the reduced Izod impact strength.

中文翻译：

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动态硫化聚（偏二氟乙烯）/硅橡胶共混物的结晶动力学和形态

研究了硅橡胶 (SR) 对动态硫化聚偏二氟乙烯 (PVDF)/SR 共混物的等温结晶动力学、非等温结晶动力学、晶体结构、球晶形貌、流变性能和机械性能的影响。相对于纯PVDF，SR组分的加入不仅提高了PVDF在相同冷却速率下的非等温结晶速率，而且在相同的结晶温度下提高了等温结晶速率。PVDF/SR 共混物的晶体结构不会改变。两相之间较差的界面附着力和较差的相容性在降低悬臂梁式冲击强度方面起着关键作用。