Vac/E与PVE改性磷酸镁涂层附着力与防腐性能研究

doi:10.11896/cldb.24100232

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Abstract Magnesium phosphate cement (MPC) is a candidate material for inorganic anti-corrosion with excellent performance. However, when it is used for anti-corrosion of the steel surfaces, there are still some problems, such as the coordinated deformation of coating and steel, the evaluation and improvement of anti-corrosion ability. In this work, the modified MPC coating was prepared by Vac/E and PVE. The changes in the setting time and adhesion of the coating with different contents of Vac/E and PVE were studied. The electrochemical performance of the coa-ting with the selected content was analyzed. Combined with the phase composition and micromorphology analysis, the adhesion mechanism between Vac/E and PVE modified MPC coating was revealed. The results show that compared with epoxy coating, the adhesion of Vac/E and PVE-modified MPC coating is improved by 2—3 levels, which meets the engineering application requirements of anti-corrosion coating for power infrastructure. The modified effect of PVE is better than that of Vac/E, and its optimal content is 1%. During the accelerated corrosion process, the coating resistance decreases by only 24.62%, and the penetration decreases by 1—2 orders of magnitude, exhibiting good anti-corrosion performance. SEM analysis shows that the space network structure formed by PVE polymerization is interspersed in the hydration product of MPC, which improves the compactness of the coating and delays the destruction of the passive film. Vac/E could be adsorbed on the surface of the hydration product, inhibits its hydrolysis, and be not conducive to the re-passivation of the pitting corrosion area.

Key words： magnesium phosphate cement (MPC) anti-corrosion coating electrochemistry polymer

Published: 10 December 2025 Online: 2025-12-03

CLC number:

TG174.4

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	Articles by authors
	ZHENG Chuanjie
	LI Yanli
	DONG Huizhu
	TANG Shihao
	FAN Xuhan
	PEI Yan

Cite this article:

ZHENG Chuanjie,LI Yanli,DONG Huizhu, et al. Study on Adhesion and Anticorrosive Performance of Magnesium Phosphate Coating Modified by Vac/E and PVE[J]. Materials Reports, 2025, 39(23): 24100232-8.

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https://www.mater-rep.com/EN/10.11896/cldb.24100232 OR https://www.mater-rep.com/EN/Y2025/V39/I23/24100232

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