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首页> 外文期刊>Journal of Applied Polymer Science >Morphology and properties of poly(vinylidene fluoride)/silicone rubber blends
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Morphology and properties of poly(vinylidene fluoride)/silicone rubber blends

机译：聚偏二氟乙烯/硅橡胶共混物的形态和性能

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摘要

Blends of poly(vinylidene fluoride) (PVDF) and silicone rubber (SR) were prepared through melt mixing. The morphology, rheology, crystallization behavior, mechanical properties, dynamic mechanical properties and thermal properties of the PVDF/SR blends were investigated. The blend with 9 wt % of SR showed spherical shape of disperse phase whereas the blend with 27 wt % of SR resulted in irregular shape of rubber phase. The rheology showed that the complex viscosity and storage modulus of the blends decreased with increasing the SR content. The mechanical properties of the blends were decreased with increasing the SR content but that were significantly improved after dynamical vulcanization. The crystallization temperature of PVDF phase in PVDF/SR blends was increased. The incorporation of SR improved the thermal stability of PVDF/SR blends, and the temperature at 10% mass loss of the blends increased to about 489°C compared with 478°C of the pure PVDF. The mass of residual char in experiment of the blends was lower than that obtained in theory.
机译：通过熔融混合制备聚偏二氟乙烯（PVDF）和硅橡胶（SR）的共混物。研究了PVDF / SR共混物的形态，流变，结晶行为，力学性能，动态力学性能和热性能。具有9wt％的SR的共混物显示分散相的球形，而具有27wt％的SR的共混物导致橡胶相的不规则形状。流变学表明，共混物的复数粘度和储能模量随着SR含量的增加而降低。共混物的机械性能随SR含量的增加而降低，但在动态硫化后显着提高。 PVDF / SR共混物中PVDF相的结晶温度升高。 SR的加入改善了PVDF / SR混合物的热稳定性，与纯PVDF的478°C相比，混合物质量损失10％时的温度升至约489°C。共混物实验中残留炭的质量比理论上的要低。

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