中国塑料 ›› 2018, Vol. 32 ›› Issue (08): 33-39.DOI: 10.19491/j.issn.1001-9278.2018.08.006

• 材料与性能 • 上一篇    下一篇

高流动高模量高抗冲聚丙烯复合材料的制备及性能研究

郑智焕1,李彦涛2,杨丽庭1,黄文杰1,李臻1,曾聪3   

  1. 1. 华南师范大学化学与环境学院
    2. 广州石头造环保科技股份有限公司
  • 收稿日期:2018-04-02 修回日期:2018-04-14 出版日期:2018-08-26 发布日期:2018-09-26

Study on Preparation and Properties of High-flowing, High-modulus and High-impact Polypropylene Composites

  • Received:2018-04-02 Revised:2018-04-14 Online:2018-08-26 Published:2018-09-26

摘要: 研究了弹性体(POE)、滑石粉(talc)、乙撑双硬脂酰胺(EBS)的含量对高流动、高模量、高抗冲聚丙烯(PP)复合材料的力学性能、熔体流动速率、结晶温度、热稳定性以及微观断面结构的影响。结果表明,需要25份POE才能使高流动性共聚PP发生完全脆韧转变;通过熔融共混制备PP、POE、talc复合材料(PP/POE/talc),当复合材料的质量份数比为80∶20∶40时,制得的PP/POE/talc复合材料的熔体流动速率为22.9 g/10 min、弯曲模量为1 887.7 MPa、缺口冲击强度为31.2 kJ/m2;对比纯PP,其弯曲模量提高了102.2 %,缺口冲击强度提高了217.8 %,弯曲强度提高了2.6 %,拉伸强度降低了15.1 %;添加1份EBS能够同时提高PP/POE/talc复合材料的熔体流动速率与缺口冲击强度。

Abstract: The effects of POE, talc, EBS on the mechanical properties, melt flow index, crystallization temperature, thermal stability and fracture morphology of PP matrix composites were investigated. The incorporation of 25 phr POE into this PP resulted in a completely brittle-ductile transition. The composites achieved a melt flow index of 22.9 g/10 min, flexural modulus of 1887.7 MPa and notched impact strength of 31.2kJ/m2 at a PP/POE/talc weight ratio of 80∶20∶40. Compared to pure PP, the composites gained an increase in flexural modulus by 102.2 %, in notched impact strength by 217.8 % and flexural strength by 2.6 %, and however they showed a decrease in tensile strength by 15.1 %. Both the melt index and notched impact strength of the composites tended to increase with the addition of 1phr EBS.