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发明公开
CN103333408A 一种聚丙烯复合材料及其制备方法和应用 有权

一种聚丙烯复合材料及其制备方法和应用
摘要：
本发明属于高分子材料及其成型加工领域，公开了一种聚丙烯复合材料及其制备方法和应用。该聚丙烯复合材料，由以下质量分数的组分组成：聚丙烯81～93.5%，茂金属聚丙烯弹性体5～17.5%，热稳定剂1～2%，聚丙烯专用成核剂0.5～2%。本发明还公开了该聚丙烯复合材料的制备方法：将聚丙烯、茂金属聚丙烯弹性体、热稳定剂和聚丙烯专用成核剂混合分散，挤出造粒，得到聚丙烯复合材料。本发明制备得到的聚丙烯复合材料拉伸强度≥25MPa，常温缺口冲击强度≥5KJ/m2，断裂延伸率≥400%，-20℃铰链折叠次数≥104次，热氧老化后断裂延伸率保持率≥95%，可应用于制备汽车扎带中。
摘要（英）：

The invention belongs to the field of high molecular materials and contour machining thereof, and discloses a polypropylene composite material, and a preparation method and application thereof. The polypropylene composite material comprises the following components in percentage by mass: 81-93.5% of polypropylene, 5-17.5% of metallocene polypropylene elastomer, 1-2% of heat stabilizer and 0.5-2% of special nucleating agent for polypropylene. The invention also discloses the preparation method of the polypropylene composite material, which comprises the following steps: performing mixed dispersion on the polypropylene, the metallocene polypropylene elastomer, the heat stabilizer and the special nucleating agent for polypropylene, extruding, and granulating to obtain the polypropylene composite material. For the polypropylene composite material prepared by the invention, the tensile strength is at least 25 MPa, the normal-temperature notch impact strength is at least 5 KJ/m<2>, the break extension is at least 400%, the hinge folding number at -20 DEG C is at least 104 times, and the break extension retention rate after oxidative aging is at least 95%; and the polypropylene composite material can be used for preparation of ties for automobiles.

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