中国塑料

中国塑料 ›› 2008, Vol. 22 ›› Issue (09): 81-84 .DOI: 10.19491/j.issn.1001-9278.2008.09.018

• 助剂 • 上一篇    下一篇

PVC用环保型热稳定体系的复配研究

张书华;曹俭;刘 波   

  1. 哈尔滨理工大学化学与环境工程学院;上海工程技术大学化学化工学院
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-09-26 发布日期:2008-09-26

Compound Experiment of Environmental Heat Stabilizers Applied to PVC

ZHANG Shu-hua;CAO Jian;LIU Bo   

  1. School of Chemical and Environmental Engineering, Harbin University of Science and Technology;School of Chemistry and Chemical Engineering, Shanghai University of Engineering Science
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-09-26 Published:2008-09-26
  • Contact: ZHANG Shu-hua

摘要： 对酯基锡热稳定剂与硬脂酸类、环氧类以及烷基锡类等无毒或低毒热稳定剂进行了复配研究，用刚果红法和流变仪对复配体系进行了静态和动态热稳定性测试。静态热稳定性实验结果表明：硬脂酸钡、硬脂酸锌与酯基锡热稳定剂复配，体系的静态热稳定时间从32 min增至49 min；环氧助稳定剂与酯基锡有较好的协同效应；烷基锡与酯基锡复配，体系的热稳定时间由32 min增加到57 min。高于加工温度下的动态实验结果表明，酯基锡/烷基锡复合体系透明性良好，动态热稳定性好于钙锌复合热稳定剂体系。72 h紫外辐照老化实验结果表明，酯基锡/烷基锡复合体系有优异的耐紫外老化性能，老化后的拉伸强度保持率为98.14 %，断裂伸长率保持率为91.71 %。

关键词: 聚氯乙烯, 热稳定剂, 复配, 酯基锡

Abstract: The static and dynamic stabilities for PVC was compared for combination of ester-tin with various assistant stabilizers including stearate, epoxide, and alkyl tin by means of congo red rheometer. By compounding ester-tin with Ba/Zn and alkyl tin, the heat stability time increased from 32 min to 49 min and 32 min to 57 min, respectively. A good synergistic effect was observed when epoxide was used as an assistant stabilizer. The combination of ester-tin with alkyl tin not only resulted in a better transparency, but also a better dynamic thermal stability at high temperature than with Ca/Zn. After UV irradiation of 72h, the remaining tensile strength was 98.14 % and elongation at break was 91.71 %.

Key words: poly (vinyl chloride), thermal stability, compound, ester-tin

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