Effect of Acrylic Resin on the Protection Performance of Epoxy Coating for Magnesium Alloy

被引:0
|
作者
Liu, Xinyu [1 ]
Zhang, Yingjun [1 ,2 ]
Jiang, Yong [3 ]
Li, Mengyang [1 ]
Bai, Jianjun [4 ]
Zhou, Xiaorong [4 ]
机构
[1] Sichuan Univ Sci & Engn, Sch Mat Sci & Engn, Zigong 643000, Peoples R China
[2] Sichuan Univ Sci & Engn, Mat Corros & Protect Key Lab Sichuan Prov, Zigong 643000, Peoples R China
[3] Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China
[4] Sichuan Xingrong Sci & Technol Co Ltd, Meishan 620000, Peoples R China
基金
中国国家自然科学基金;
关键词
acrylic resin; epoxy coating; corrosion protection; magnesium alloy; BEHAVIOR; WATER;
D O I
10.3390/coatings14050577
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The low toughness of epoxy resin can influence its shielding performance against a corrosive medium and strength of adhesion to metal surfaces. Extensive efforts have been made to modify epoxy resin. In this research, acrylic resin was synthesized by the solution method, and 1 wt.%, 2.5 wt.%, and 5 wt.% were added to epoxy resin (E44 brand) to prepare coatings on the surface of AZ31B magnesium alloy. The effects of acrylic resin on the mechanical and protective properties of epoxy coatings were investigated via experiments measuring impact resistance, flexibility, and adhesion as well as the electrochemical impedance technique. Compared with the pure epoxy coating, the adhesion between the coating and the substrate increases by 1.37 MPa after the addition of 2.5 wt.% acrylic resin. Meanwhile, the pencil hardness has a slight change from 5B to 6B, and the flexibility significantly improves. Therefore, the epoxy coating exhibits enhanced anticorrosive properties after the addition of 2.5 wt.% acrylic resin.
引用
收藏
页数:15
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