Water and corrosion resistance of epoxy-acrylic-amine waterborne coatings: Effects of resin molecular weight, polar group and hydrophobic segment

被引：137

作者：

Liu, Min ^{[1
]}

Mao, Xuhui ^{[1
]}

Zhu, Hua ^{[1
]}

Lin, An ^{[1
]}

Wang, Dihua ^{[1
,2
]}

机构：

[1] Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430072, Peoples R China

[2] Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China

来源：

CORROSION SCIENCE | 2013年 / 75卷

基金：

中国国家自然科学基金;

关键词：

Organic coatings; EIS; Polymer coatings; CROSS-LINKING; FILM FORMATION; NETWORK STRUCTURE; LATEX FILMS; PART II; MOISTURE; INTERDIFFUSION; PERFORMANCE; ABSORPTION; POLYMERS;

D O I：

10.1016/j.corsci.2013.05.020

中图分类号：

T [工业技术];

学科分类号：

120111 [工业工程];

摘要：

A two-step esterification process is developed for the synthesis of epoxy-acrylic-grafted-copolymer waterborne resins. The effect of synthesis parameters on water and corrosion resistance of the waterborne coatings is investigated. The results reveal that moderate increasing of the resin molecular weight (<8000 Da) and carboxyl content (<27 wt.%) increased the crosslinking property, thereby improved the anticorrosion performance of the coatings. Longer epoxy-octanoic hydrophobic chains can provide stronger shielding effect on the hydrophilic portion of the polymer matrixes. The polar group content in a waterborne resin can be optimized for better anticorrosion performance, whereas the optimal value is coating-specific. (c) 2013 Elsevier Ltd. All rights reserved.

引用

页码：106 / 113

页数：8

共 42 条

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