中国塑料 ›› 2021, Vol. 35 ›› Issue (2): 84-89.DOI: 10.19491/j.issn.1001-9278.2021.02.014

• 助 剂 • 上一篇    下一篇

复合抗氧剂在煤基聚丙烯中的应用研究

刘义1(), 郭晓东1, 包璐璐1, 舒成2, 李永伦2, 王勇1, 李国锋1, 杜善明1   

  1. 1.国能新疆化工有限公司,乌鲁木齐 831400
    2.中国神华煤制油化工有限公司上海研究院,上海 201100
  • 收稿日期:2020-07-29 出版日期:2021-02-26 发布日期:2021-02-22
  • 基金资助:
    国家能源集团科技创新项目(GJNY?19?20)

Applications of Composite Antioxidants in Coal⁃based Polypropylene

LIU Yi1(), GUO Xiaodong1, BAO Lulu1, SHU Cheng2, LI Yonglun2, WANG Yong1, LI Guofeng1, DU Shanming1   

  1. 1.CHN Energy Xinjiang Chemical Limited Company,Urumqi Xinjiang 831400,China
    2.Shanghai Research Institute of China Shenhua Coal to Liquid Chemical Co,Ltd,Shanghai 201100,China
  • Received:2020-07-29 Online:2021-02-26 Published:2021-02-22
  • Contact: LIU Yi E-mail:yi.liu.dc@chnenergy.com.cn

摘要:

分别采用不同质量比的1010和168复合抗氧剂、硬脂酸钙制备出一系列煤基PP S1003,通过不同温度下氧化诱导期(OIT)测试、多次挤出熔体流动速率测试、黄色指数YI测试等对S1003中的热氧稳定性、加工稳定性进行了分析研究。结果表明,随着主辅协同抗氧剂体系当中1010含量的提升,抗氧剂所稳定S1003体系相同温度下的OIT值逐渐增加,体现出优异的氧自由基捕获能力;配方3、配方4经多次挤出测的熔体流动速率增大趋势较为平缓,说明有效抑制了S1003的热氧化降解;多次挤出黄色指数的分布趋势表明,抗氧剂168含量的增加提升了S1003的抗色变性能,总之适宜配比的复合抗氧剂改善了S1003的抗氧化性能,这对于复合抗氧剂配方比例的优选、延长煤基PP材料的使用寿命具有重要意义。

关键词: 聚丙烯, 复合抗氧剂, 热氧稳定性, 加工稳定性

Abstract:

A series of coal-based PP (S1003) were prepared by using different ratios of 1010/168 composite antioxidants to calcium stearate, and their thermal oxidative stability and processing stability were analyzed through oxidation induced time (OIT) test, multiple extrusion test and yellow index test at different temperatures. The results indicated that the OIT value of S1003 increased with an increase in the concentration of antioxidant 1010 in the main and auxiliary antioxidant system at the same temperature, presenting an excellent ability to capture oxygen free radicals. At the same time, the MFRs of the samples with formula 3 and formula 4 showed a slow increasing trend, indicating that the thermal oxidative degradation of S1003 was inhibited effectively. In addition, the distribution trend in yellow index showed that the color change resistance for the samples obtained from repeated extrusion was improved with an increase in the concentration of antioxidant 168. It was concluded that a proper ratio for the antioxidant composite could improve the antioxidant performance of S1003. Such a result is of great significance for the optimizing the formula proportion of composite antioxidants and prolonging the service life of coal?based PP materials.

Key words: polypropylene, composite antioxidant, thermal oxidative stability, processing stability

中图分类号: