中国塑料 ›› 2013, Vol. 27 ›› Issue (03): 73-76 .DOI: 10.19491/j.issn.1001-9278.2013.03.013

• 加工与应用 • 上一篇    下一篇

均聚和共聚聚丙烯树脂在改性方面性能差异研究

姜向新 肖鹏 陆湛泉 王爱东 杨霄云   

  1. 金发科技股份有限公司
  • 收稿日期:2012-11-08 修回日期:2012-11-21 出版日期:2013-03-26 发布日期:2013-03-26

Study on Properties Difference of Homo-polypropylene and Co-polypropylene in Modification

  

  • Received:2012-11-08 Revised:2012-11-21 Online:2013-03-26 Published:2013-03-26

摘要: 对均聚聚丙烯和共聚聚丙烯在热氧老化、耐应力发白、着色性以及不同条件处理后收缩率方面差异进行了研究。结果表明,经过150℃热氧老化后,均聚聚丙烯冲击性能下降严重,而共聚聚丙烯的冲击性能先上升至200 %以上,然后缓慢下降;树脂结晶度越高,越规整或无规整,乙烯含量越低,耐应力发白性能越好;热处理及水煮后,聚丙烯结晶度越高,后收缩率越小;熔体流动速率越大、结晶越容易,黑度越大、色相越偏蓝。

关键词: 均聚聚丙烯, 热氧老化, 应力发白, 后收缩, 着色, 共聚聚丙烯

Abstract: In this paper, various behavior of homo-polypropylene and co-polypropylene were studied, including thermo-oxidant aging, stress white, post shrinkage after different treatment conditions, and dyeing. After thermo-oxidant aging, the impact strength of homo-polypropylene decreased remarkably, however, that of co-polypropylene increased up to 200 % at first, and then decreased slowly. The resistance to stress whitening of homo-polypropylene was better than that of co-polypropylene; After heat treatment and boiled in water, the post shrinkage of polypropylene with high crystallinity was lower than that of polypropylene with low crystallinity. When the blackness of polypropylene was larger, the hue was more bluish.

Key words: homo polypropylene, thermo-oxidant aging, stress white, post shrinkage, dyeing, co-polypropylene

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