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Studies on Dynamically Vulcanized Polypropylene (PP)/Butadiene Styrene Block Copolymer (SBS) Blends:Crystallization and Thermal Behavior

机译:动态硫化聚丙烯(PP)/丁二烯苯乙烯嵌段共聚物(SBS)共混物的研究:结晶和热行为

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摘要

Crystallization of polypropylene (PP) in unvulcanized blends of PP with the butadiene-styrene block copolymer (SBS) was studied through differential scanning calorimetry (DSC) and X-ray diffraction measurements in the composition range of O-40 wt % SBS content.Analysis of the crystallization exotherms revealed variation in the crystallization behavior,crystallinity,and crystalline morphology of the PP com-ponent in the blends at various levels of SBS concentration.The crystallinity deter-mined by X-ray diffraction and DSC showed identical variations with the blend com-position.The tensile and thermal properties of the blends were studied in the entire composition range.Correlations of the tensile properties with crystallization pa-rameters of the PP component in the blends are also presented.
机译:通过差示扫描量热法(DSC)和X射线衍射测量研究了在O-40 wt%SBS含量范围内的未硫化PP与丁二烯-苯乙烯嵌段共聚物(SBS)共混物中聚丙烯(PP)的结晶。结晶放热的变化揭示了在不同的SBS浓度下共混物中PP组分的结晶行为,结晶度和结晶形态的变化.X射线衍射和DSC测定的结晶度与共混物相同在整个组成范围内研究了共混物的拉伸性能和热性能。还介绍了共混物中PP组分的拉伸性能与结晶参数的相关性。

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