中国塑料 ›› 2011, Vol. 25 ›› Issue (12): 39-42.DOI: 10.19491/j.issn.1001-9278.2011.12.010

• 材料与性能 • 上一篇    下一篇

滑石粉对聚丙烯微观形态和性能影响

郭甜甜 丁雪佳 张雨 周克斌   

  1. 北京化工大学北京市新型高分子材料制备与加工重点实验室 北京化工大学材料科学与工程学院 北京化工大学北京市新型高分子材料制备与加工重点实验室 北京化工大学北京市新型高分子材料制备与加工重点实验室
  • 收稿日期:2011-08-23 修回日期:1900-01-01 出版日期:2011-12-26 发布日期:2011-12-26

Influence of Talc on Morphology and Properties of PP

Tiantian GUO Xuejia DING Yu ZHAGN Kebin ZHOU   

  • Received:2011-08-23 Revised:1900-01-01 Online:2011-12-26 Published:2011-12-26
  • Contact: Xuejia DING

摘要: 以滑石粉为填料通过挤出机熔融共混制备聚丙烯(PP)/滑石粉复合材料,考察了硅烷偶联剂对滑石粉表面改性前后及添加不同含量的乙烯-辛烯共聚物(POE)对共混物力学性能、流变性能和微观形态的影响。结果表明,滑石粉表面改性后可以明显提高PP的缺口冲击强度,当PP/滑石粉质量比为100/10和100/30时,PP/滑石粉(改性)较PP/滑石粉(未改性)复合材料的缺口冲击强度分别提高37.8 %与36.4 %;表面改性后的滑石粉使复合材料的储能模量降低;POE的加入提高了滑石粉在PP基体中的分散性,随着其含量的增加,复合材料的缺口冲击强度提高,韧性提高。

关键词: 聚丙烯, 滑石粉, 硅烷偶联剂, 表面改性, 复合材料

Abstract: Polypropylene (PP) /talc composites were prepared via melt extrusion. The effects of surface modification with silane and the addition of ethylene-octene copolymer (POE) on the mechanical, rheological properties, and microstructure morphology of composites were investigated. It showed that the talc surface modification significantly improved the impact strength of PP. while PP/talc mass ratio was 100/10 and 100/30, the notched impact strength of PP/talc composites increased by 37.8% and 36.4%, respectively, by the silane modification. However, the surface modification of talc decreased the storage modulus. POE promoted the dispersion of talc in PP matrix. The impact strength of the composites increased with increasing POE content.

Key words: polypropylene, talc, silane coupling agent, surface modification, composit