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聚甲基丙烯酸酯改性聚氨酯光固化水性体系研究
引用本文:杨建文,曾兆华,王志明,陈用烈. 聚甲基丙烯酸酯改性聚氨酯光固化水性体系研究[J]. 应用化学, 2001, 18(8): 631-0
作者姓名:杨建文  曾兆华  王志明  陈用烈
作者单位:中山大学
基金项目:广东省自然科学基金资助课题(960019)
摘    要:水性涂料;聚甲基丙烯酸酯改性聚氨酯光固化水性体系研究;接枝共聚物;聚氨酯丙烯酸酯;丙烯酸酯共聚物

关 键 词:水性涂料  聚甲基丙烯酸酯改性聚氨酯光固化水性体系研究  接枝共聚物  聚氨酯丙烯酸酯  丙烯酸酯共聚物  
文章编号:1000-0518(2001)08-0631-05
收稿时间:2009-06-29
修稿时间:2000-10-08

Polymethacrylate Modified Polyurethane as Photocurable Waterborne Coatings
YANG Jian Wen,ZENG Zhao Hua,WANG Zhi Ming,CHEN Yong Lie. Polymethacrylate Modified Polyurethane as Photocurable Waterborne Coatings[J]. Chinese Journal of Applied Chemistry, 2001, 18(8): 631-0
Authors:YANG Jian Wen  ZENG Zhao Hua  WANG Zhi Ming  CHEN Yong Lie
Affiliation:YANG Jian Wen,ZENG Zhao Hua,WANG Zhi Ming,CHEN Yong Lie *
Abstract:A conventional polyurethane acrylate(PUA) with carboxyl as pendant group was prepared from dimethylolpropionic acid, polyethylene glycol, tolylene 2,4 diisocyanate and hydroxyethyl methacrylate. A modified PUA( g PUA) with carboxyl group was obtained by grafting the PUA onto the copolymer of glycidyl methacrylate and methyl methacrylate through the reaction between the glycidyl and part of the carboxyl groups. The PUA and g PUA could be easily dispersed in water in the form of self emulsified latex after neutralization by triethylamine. The interfacial tension of the acquired dispersions was lower than that of deionized water. The investigation of photocuring on differential photocalorimeter showed that the g PUA could polymerize to a greater extent than the conventional PUA. The glass transition termperature, thermal stability and physical properties of the cured films from the conventional PUA and the g PUA dispersions were measured. The effects of molecular weight of polyethylene glycol used on the above properties were also investigated.
Keywords:UV curable  waterborne coating  polyurethane acrylate  acrylate copolymer  graft copolymer
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