中国塑料 ›› 2016, Vol. 30 ›› Issue (08): 43-49 .DOI: 10.19491/j.issn.1001-9278.2016.08.008

• 材料与性能 • 上一篇    下一篇

超支化桥联受阻酚在聚乙烯中的抗氧化性能研究

李翠勤,孙鹏,康伟伟,郭苏月,王俊,王宝辉   

  1. 东北石油大学(原大庆石油学院)化学化工学院
  • 收稿日期:2016-02-26 修回日期:2016-06-04 出版日期:2016-08-26 发布日期:2016-08-26

Antioxidant Properties of Hyperbranched Bridged Hindered Phenols in Polyethylene Resins

  • Received:2016-02-26 Revised:2016-06-04 Online:2016-08-26 Published:2016-08-26

摘要: 以低代超支化大分子和β(3,5二叔丁基4羟基苯基)丙酰氯为原料,合成了一端具有长链烷基、另一端具有两个受阻酚结构单元的新型超支化桥联受阻酚。采用红外光谱和核磁共振氢谱对合成的超支化桥联受阻酚进行了结构表征,重点研究了超支化桥联受阻酚在两类聚乙烯中的加工稳定性和热氧稳定性。结果表明,合成的两种超支化桥联受阻酚的化学结构与其设计的理论结构相一致,在两种聚乙烯中均有良好的加工稳定性和抗氧化性能,其性能优于具有类似结构的单酚抗氧剂1076;且随着端基烷基链的增长,在两种聚乙烯中的加工稳定性和抗氧化能力增加;超支化桥联受阻酚在高密度聚乙烯中的抗氧化性能略优于其在线形低密度聚乙烯中的抗氧化性能。

关键词: 超支化大分子, 超支化桥联受阻酚, 桥联基, 抗氧化性能

Abstract: Novel hyperbranch bridge hindered phenols (HBHP) were synthesized from β(3,5-diterbutyl-4-hydroxyphenyl) propionyl chloride and low generation hyperbranched macromolecule, and the products were characterized by FTIR and 1H-NMR. And the processing stability and thermal oxidative stability of HBHPs in two polyethylene resins were investigated. HBHP provided excellent processing stability and antioxidant property for polyethylene, and their antioxidant function was superior to that of antioxidant 1076. Moreover, the antioxidant function of HBHP in two polyethylene resins increased with increasing of the length of alkyl chain. The antioxidant properties of HBHP in PE-HD were slightly better than those in PE-LLD.

Key words: hyperbranched macromolecule, hyperbranched bridged hindered phenol, bridging group, antioxidant property