Anticorrosion Performance of Brominated Epoxy/Epoxy Composite Coatings

化学工业与工程

Chemcial Industry and Engineering

2021, Vol. 38

Issue (2) :81-87 DOI: 10.13353/j.issn.1004.9533.20200337

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Anticorrosion Performance of Brominated Epoxy/Epoxy Composite Coatings

Wu Changhao^1,2,3,4, Wang Jixiao^1,2,3,4, Song Shuangshuang^1,2,3,4, Wang Zhi^1,2,3,4, Zhao Song^1,2,3,4

1. Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China;
2. State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300350, China;
3. Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin University, Tianjin 300350, China;
4. Collaborative Innovation Center of Chemical Science and Technology, Tianjin University, Tianjin 300072, China

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Abstract In order to improve the anticorrosion performance, composite coatings using epoxy (EP) coating as primer coating and brominated epoxy (BEP) coating as top coating were prepared and characterized. The experimental results indicated that EP provided good adhesion for the coatings, and the hydrophobicity of BEP effectively improved the anti-penetration of the coatings to the corrosion media. The composite coatings exhibited low wettability (water absorption:0.217%, contact angle:93.6°), high adhesion strength (dry:5.28 MPa, wet:2.52 MPa) and excellent anticorrosion performance (|Z|_{0.01 Hz}>10⁸ Ω·cm² after immersed 70 days in brine). By integrating the advantages of BEP and EP, the composite coatings exhibited long-term and promising anticorrosion performance.

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	Wu Changhao
	Wang Jixiao
	Song Shuangshuang
	Wang Zhi
	Zhao Song

Keywords： brominated epoxy； epoxy； composite coating； anticorrosion

Received 2020-06-23;

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Wu Changhao, Wang Jixiao, Song Shuangshuang, Wang Zhi, Zhao Song.Anticorrosion Performance of Brominated Epoxy/Epoxy Composite Coatings[J] Chemcial Industry and Engineering, 2021,V38(2): 81-87

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