Polypropylene composition and preparation method thereof

一种聚丙烯组合物及其制备方法

Abstract

本发明涉及一种聚丙烯组合物及其制备方法,特别涉及一种高强度高模量聚丙烯组合物及其加工制备方法。所述的聚丙烯组合物含有聚丙烯、玻璃纤维、增韧剂和抗氧剂;所述聚丙烯分子量分布指数为2.5-5.5,分子量分布宽度中的高分子拖尾指数PIHT大于1.9。所述聚丙烯只需要加入少量玻纤就能达到增强的效果,比降解法制备的聚丙烯材料加工简便、成本低,具有更好的性价比和更广泛的应用。
The invention relates to a polypropylene composition and a preparation method thereof, and particularly relates to a high-strength high-modulus polypropylene composition and a processing preparation method thereof. The polypropylene composition comprises polypropylene, glass fiber, a toughening agent and an antioxidant, wherein the molecular weight distribution index of polypropylene is 2.5-5.5, and the polymer tailing index in molecular weight distribution width is more than 1.9. Polypropylene can achieve a reinforced effect as long as a small amount of glass fiber is added. Compared with polypropylene prepared by a degradation method, the polypropylene composition has the advantages of simple processing, low cost, better cost performance and wider application.

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