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首页> 外文期刊>Journal of Applied Polymer Science >Effect of styrene-butadiene-styrene addition on polystyrene/high-density polyethylene blends
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Effect of styrene-butadiene-styrene addition on polystyrene/high-density polyethylene blends

机译：苯乙烯-丁二烯-苯乙烯添加对聚苯乙烯/高密度聚乙烯共混物的影响

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In order to prepare an ideal mixture, the physical and chemical properties of the constituent polymers must be known in detail. Thus, selection of the polymers that will constitute the mixture and a thorough study of the mixing methods and the economic factors become important. A rigid plastic is toughened by dispersing a small amount of rubbery material (generally 5-20%) in the rigid plastic matrix. Such a mixture of plastics is characterized by its impact resistance. Among thermoplastics toughened in this way are polystyrene (PS), poly(vinyl chloride), poly(methyl methacrylate), polypropylene, polycarbonate, and nylons, and recently thermoset resins such as epoxies, unsaturated polyester resins, and polyamids. In this study PS and high-density polyethylene polymers were mixed in various ratios. In order to increase the compatibility of the mixtures, 5, 7.5, and 10% SBS copolymer was also added. The mixing operation was conducted by using a twin-screw extruder. The morphology and the compatibility of the mixtures were examined by using SEM and DSC techniques. Furthermore, the elastic modulus, yield and tensile strengths, percent elongation, Izod impact resistance, hardness, and melt flow index values of the polymer alloys of various ratios were determined. (C) 2002 John Wiley Sons, Inc. [References: 14]
机译：为了制备理想的混合物，必须详细了解组成聚合物的物理和化学性质。因此，选择构成混合物的聚合物以及对混合方法和经济因素的透彻研究变得很重要。通过将少量橡胶状材料（通常为5-20％）分散在刚性塑料基质中，可以使刚性塑料增韧。这种塑料混合物的特征在于其抗冲击性。以这种方式增韧的热塑性塑料包括聚苯乙烯（PS），聚氯乙烯，聚甲基丙烯酸甲酯，聚丙烯，聚碳酸酯和尼龙，以及最近的热固性树脂，例如环氧树脂，不饱和聚酯树脂和聚酰胺。在这项研究中，PS和高密度聚乙烯聚合物以各种比例混合。为了提高混合物的相容性，还添加了5、7.5和10％的SBS共聚物。混合操作通过使用双螺杆挤出机进行。通过使用SEM和DSC技术检查混合物的形态和相容性。此外，测定了各种比例的聚合物合金的弹性模量，屈服强度和拉伸强度，百分伸长率，悬臂梁式抗冲击性，硬度和熔体流动指数值。 （C）2002 John Wiley Sons，Inc. [参考：14]

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