溴代环氧/环氧复合涂层防腐性能研究

摘要针对金属腐蚀问题，制备了以环氧涂层为底漆，溴代环氧涂层为面漆的溴代环氧/环氧复合涂层。研究结果表明：环氧树脂的极性为涂层提供良好的附着力，溴代环氧树脂的疏水性有效提高涂层的抗渗透性能。复合涂层具有低润湿性（吸水率：0.217%，接触角：93.6°）、高附着力（干：5.28 MPa，湿：2.52 MPa）和优异的耐盐水防腐性能（浸泡70 d后，|Z|_{0.01 Hz}>10⁸ Ω·cm²）。通过综合利用溴代环氧树脂和环氧树脂的优势，使复合涂层具有良好疏水性、屏蔽性，有效提高涂层的防护能力，实验结果表明，该涂层具有防腐的长效性和实用性。

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	吴昌豪
	王纪孝
	宋双双
	王志
	赵颂

关键词：溴代环氧树脂；环氧树脂；复合涂层；防腐

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.

Keywords： brominated epoxy； epoxy； composite coating； anticorrosion

Received 2020-06-23;

Fund:化学工程联合国家重点实验室探索性课题（SKLoChE-17T01）。

Corresponding Authors: 王纪孝,E-mail:jxwang@tju.edu.cn。 Email: jxwang@tju.edu.cn

About author: 吴昌豪(1996-),男,硕士研究生,现从事防腐防污涂料方面的研究。

引用本文:

吴昌豪, 王纪孝, 宋双双, 王志, 赵颂.溴代环氧/环氧复合涂层防腐性能研究[J]. 化学工业与工程, 2021,38(2): 81-87

Wu Changhao, Wang Jixiao, Song Shuangshuang, Wang Zhi, Zhao Song.Anticorrosion Performance of Brominated Epoxy/Epoxy Composite Coatings[J]. Chemcial Industry and Engineering, 2021,38(2): 81-87

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