中国塑料2017，Vol.31Issue(9)：97-101,5.DOI:10.19491/j.issn.1001-9278.2017.09.015
氨基脲嘧啶对PVC的热稳定作用——性能递变规律与机理
Heat Stabilization Effect of Aminouracils on Poly(vinyl chloride)——Progressive Change Law of Performance and Mechanism
曹先贵 1吴茂英 1何家俊1
作者信息
- 1. 广东工业大学轻工化工学院,广东广州510006
- 折叠
摘要
Abstract
Effects of several 6-aminouracils on heat stability of PVC were investigated by an oven discoloration method.The results indicated that the heat stability of PVC was improved with an increase of electron-withdrawing capability of groups linked to the carbamido groups.Based on this progressive change law of heat stability as well as molecular structural characteristics of 6-aminouracils,it was predicted that 6-aminouracils could stabilize PVC by an electrophilic reaction with PVC through their 6-C atom as the electrophilic center.This means that the classical Frye and Horst's theory are not suitable for the heat stabilization mechanism of 6-aminouracils,and therefore,the exact mechanisms for this new heat stabilizer should be clarified in further work.关键词
氨基脲嘧啶/聚氯乙烯/热稳定剂/性能递变规律/机理Key words
6-aminouracil/poly(vinyl chloride)/heat stabilizer/progressive change law of performance/mechanism分类
化学化工引用本文复制引用
曹先贵,吴茂英,何家俊..氨基脲嘧啶对PVC的热稳定作用——性能递变规律与机理[J].中国塑料,2017,31(9):97-101,5.
