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首页> 外文期刊>Journal of Applied Polymer Science >Dynamically vulcanized polypropylene/styrene-butadiene rubber blends: The effect of a peroxide/bismaleimide curing system and composition
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Dynamically vulcanized polypropylene/styrene-butadiene rubber blends: The effect of a peroxide/bismaleimide curing system and composition

机译：动态硫化的聚丙烯/苯乙烯-丁二烯橡胶混合物：过氧化物/双马来酰亚胺硫化体系和组成的影响

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摘要

Polypropylene (PP)/styrene-butadiene rubber blends were studied with special attention given to the effects of the blend ratio and dynamic vulcanization. Dicumyl peroxide (DCP) was used as the curing agent in combination with N,N′-m-phenylene bismaleimide (BMI) as the coagent for the curing process. Outstanding mechanical performance, especially with regard to the elongation at break, and better resistance to compression set were achieved with the dynamic vulcanization; this indicated that the DCP/BMI system also acted as a compatibilizing agent. This phenomenon was also confirmed by Fourier transform infrared spectroscopy of the insoluble material, the crystallinity degree of the PP phase (as investigated by X-ray diffractometry), and scanning electron microscopy. The dynamic mechanical properties of the nonvulcanized and vulcanized blends were also investigated. The aging resistance of the blends was also evaluated.
机译：研究了聚丙烯（PP）/苯乙烯-丁二烯橡胶共混物，并特别注意了共混比和动态硫化的影响。过氧化二枯基（DCP）用作固化剂，N，N'-间亚苯基双马来酰亚胺（BMI）用作固化过程的助剂。通过动态硫化获得了杰出的机械性能，尤其是在断裂伸长率方面，以及更好的抗压缩永久变形性能;这表明DCP / BMI系统也可以用作增容剂。不溶物的傅立叶变换红外光谱法，PP相的结晶度（通过X射线衍射法研究）和扫描电子显微镜也证实了这一现象。还研究了未硫化和硫化混合物的动态力学性能。还评估了共混物的耐老化性。

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