中国塑料 ›› 2015, Vol. 29 ›› Issue (11): 50-54 .DOI: 10.19491/j.issn.1001-9278.2015.11.008

• 材料与性能 • 上一篇    下一篇

PVC/高分子表面修饰CaCO3复合材料的加工性能研究

刘海,汪杰,文胜,龚春丽,郑根稳   

  1. 湖北工程学院
  • 收稿日期:2015-07-13 修回日期:2015-08-24 出版日期:2015-11-26 发布日期:2015-11-26

Processability of PVC/Liquid Polymer Modified CaCO3 Composites

  • Received:2015-07-13 Revised:2015-08-24 Online:2015-11-26 Published:2015-11-26

摘要: 采用液态高分子改性剂对CaCO3进行包覆改性,得到高分子表面修饰CaCO3(CLCC)。使用转矩流变仪、紫外可见分光光度计及白度测定仪对聚氯乙烯(PVC)/CaCO3复合材料和PVC/CLCC复合材料的加工性能进行了研究。结果表明,CLCC颗粒的加入可以缩短PVC的塑化时间,改善其加工性能,提高PVC生产效率;而抑制了PVC在熔融加工过程中的降解;PVC/CLCC复合材料的白度保持率高于PVC/CaCO3复合材料。

关键词: 聚氯乙烯, 加工性能, 塑化时间, 白度, 降解

Abstract: CaCO3 was coated with a liquid polymer modifier leading to molecular modified CaCO3 composites (CLCC), which was introduced into PVC. The processability of PVC/CaCO3 and PVC/CLCC systems were investigated by using torque rheometer, whiteness test, and UV-vis spectrophotometer. It was found that the CLCC particles had fine plasticization effect on PVC, and could restrain the decomposition of PVC resin during melting process. The whiteness retention of PVC/CLCC was higher than that of PVC/CaCO3 systems.

Key words: Poly(vinyl chloride), processability, fusion time, whiteness, degradation