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Toughening of Polypropylene with Calcium Sulfate Whiskers Treated by coupling Agents

机译:用偶联剂处理的硫酸钙晶须的聚丙烯增韧

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Calcium sulfate whiskers are modified by three kinds of coupling agents. The modified calcium sulfate whiskers are then introduced into polypropylene to prepare calcium sulfate whiskers/PP composites. Mechanical strength tests show that notched izod impact of polypropylene increases dramatically by adding calcium sulfate whiskers. When a silicane coupling agent KH-570 is adopted to modify calcium sulfate whiskers at 30 % (w/w) of whiskers, the notched izod impact of composites can increase by nearly 60 %. SEM is utilized to observe the impact fracture surface morphology of the composites and the distribution of calcium sulfate whiskers in the PP matrix. The results indicate that the surface treatment can promote uniform distribution of calcium sulfate whiskers in the PP matrix, and improve the notched izod impact and toughness of composites. Coupling agents play a role in toughening for the calcium sulfate whiskers/PP composites.
机译:通过三种偶联剂改性硫酸钙晶须。然后将改性硫酸钙晶须引入聚丙烯中以制备硫酸钙晶须/ pp复合材料。机械强度试验表明,通过加入硫酸钙晶须,聚丙烯的缺口Izod的影响急剧增加。当采用硅烷偶联剂KH-570以30%(W / W)的晶须修饰硫酸钙晶须时,复合材料的缺口Izod撞击可能会增加近60%。 SEM用于观察复合材料的冲击断裂表面形态和PP基质中硫酸钙晶须的分布。结果表明,表面处理可以促进PP基质中硫酸钙晶须的均匀分布,提高复合材料的缺口冰片冲击和韧性。偶联剂在硫酸钙晶须/ PP复合材料中起着增韧的作用。

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