EIS STUDY OF CORROSION PREVENTION PERFORMANCE OF ACRYLIC LATEX COATINGS MODIFIED BY SILANE COUPLINGAGENT

J Chin Soc Corr Pro

1998, Vol. 18

Issue (1): 62-66 DOI:

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EIS STUDY OF CORROSION PREVENTION PERFORMANCE OF ACRYLIC LATEX COATINGS MODIFIED BY SILANE COUPLINGAGENT

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Abstract The corrosion prevention ability of acrylic latex coatings could be enhanced by introducing silane coupling agent into coating/metal interface. The effects of coupling agent type, its contents, curing temperature and application procedure on the anticorrosion behavior were investigated. Electrochemical impedance spectroscopy(EIS) and adhesive strength measurements were used to assess the corrosion prevention performance of the modified coatings. The results showed that the steel substrate pretreated with methacryloxypropyl trimethoxysilane(A174) and cured at 120℃ exhibited excellent anticorrosion performance, which could be attributed to the formation of a new interfacial layer with high hydrophobicity and strong adhesive strength.

Key words: Corrosion Electrochemical impedance spectroscopy(EIS) Latex coating Silane coupling agent

Received: 25 February 1998

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WANG Sheng-xian LIN Wei-wei DUAN Hong-dong (Department of polymer science and engineering; Zhejiang University; Hangzhou 310027)ZHANG Jian-qing CHENG Shao-an (Department of chemistry; Zhejiang University; Hangzhou 310027). EIS STUDY OF CORROSION PREVENTION PERFORMANCE OF ACRYLIC LATEX COATINGS MODIFIED BY SILANE COUPLINGAGENT. J Chin Soc Corr Pro, 1998, 18(1): 62-66.

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1998/V18/I1/62

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3 Plueddemann E P. Prog. Org. Coat., 1983, 11:297
4 Scully J R. J. Electrochem. Soc., 1989, 136:979
5 Murray J N, Hack H P. Corrosion, 1991, 47:480

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