非开挖增强增韧聚丙烯复合材料管的研制

发布时间：2018-02-25 17:44

  本文关键词： 聚丙烯 镁盐晶须 增强 β晶型　出处：《新型建筑材料》2017年06期 　论文类型：期刊论文

【摘要】：采用双螺杆挤出机制备了聚丙烯/镁盐晶须复合材料,研究了各组分及配比对复合材料性能的影响,并制备了管材。试验结果表明,PP-g-MAH对复合材料具有良好的增容作用。镁盐晶须对PP和β晶型PP均具有较好的增强作用,在相同晶须掺量下,βPP的拉伸强度、弹性模量、维卡软化点等均较PP低一些,但具有较高的抗冲击强度。镁盐晶须对PP具有结晶成核作用,是α成核剂,但成核效力不如稀土β成核剂。所制备的管材的拉伸强度为32 MPa,维卡软化点153℃,落锤冲击不破,远优于DL/T 802.7—2010要求。
[Abstract]:Polypropylene / magnesium whisker composites were prepared by twin-screw extruder. The experimental results show that PP-g-MAH has a good compatibilization effect on the composites. Magnesium salt whiskers have a good reinforcing effect on both PP and 尾 -crystalline PP, and the tensile strength and elastic modulus of 尾 -PP are increased under the same whisker content. The softening point of Vicat is lower than that of PP, but it has higher impact strength. Magnesium salt whisker has nucleation effect on PP and is a nucleating agent. But the nucleation effect is not as good as the rare earth 尾 nucleating agent. The tensile strength of the prepared pipe is 32 MPA, the Vicat softening point is 153 鈩，

本文编号：1534543