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将晶成核剂添加到聚丙烯中进行共混纺丝制得改性聚丙烯纤维，研究了纺丝和拉仲工艺对纤维性能的影响，以及此改性聚丙烯纤维在混凝土中的应用。
The crystal nucleating agent is added to polypropylene to prepare modified polypropylene fiber, the effect of spinning and pulling process on the properties of the fiber is studied, and the application of the modified polypropylene fiber in concrete is also studied.