Intrinsic hydrophobic fluoroethylene-vinyl ester polymer-based superhydrophobic coating with superior anticorrosion properties for metal protection

IF 6.3 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2025-09-02 DOI:10.1016/j.jtice.2025.106382

Yue Ma , Jinxue Li , Shuhui Li , Zunzhao Li , Wei Zhao , Yuezhen Bin

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引用次数: 0

Abstract

Background

Metal corrosion remains a significant challenge in industrial applications, while high-performance anti-corrosion coatings provide an effective solution for protecting metal surfaces from environmental degradation.

Methods

In this study, chlorotrifluoroethylene (CTFE), vinyl acetate (VAc), dodecafluoroheptyl methacrylate (DFMA), and hydroxybutyl vinyl ether (HBVE) monomers with crosslinking sites were selected to synthesize intrinsically hydrophobic fluoroethylene-vinyl ester (FEVE) polymers via solution polymerization. Subsequently, unmodified SiO₂ particles were directly compounded with the CTFE-VAc-DFMA-HBVE polymer to prepare a superhydrophobic coating (CVDH-SiO₂) by air spraying. The above polymer-based coating containing only 18 wt% unmodified nano-SiO₂ exhibits remarkable superhydrophobicity. Investigations into the surface self-cleaning and antifouling properties of the superhydrophobic coatings demonstrate their ability to return to a clean state even after exposure to contaminants such as carbon powder and muddy water. Furthermore, the coatings display outstanding corrosion resistance, with a low-frequency impedance value |Z|_0.01 _Hz reaching 1.23 × 10⁹∼1.35 × 10¹⁰ Ω·cm², which is five orders of magnitude higher than that of the bare steel (|Z|_{0.01 Hz}=1.37 × 10⁴ Ω·cm²). These findings indicate that the CVDH-SiO₂ coatings offer exceptional corrosion protection for metals.

Significant Findings

This study offers new possibilities for the practical engineering applications of superhydrophobic coating technology in heavy corrosion protection, antifouling, and other industrial fields.

Abstract Image

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本征疏水氟乙烯-乙烯酯聚合物基超疏水涂层，具有优异的金属防护防腐性能

金属腐蚀在工业应用中仍然是一个重大挑战，而高性能防腐涂层为保护金属表面免受环境退化提供了有效的解决方案。方法选择具有交联位点的三氟氯乙烯（CTFE）、醋酸乙烯（VAc）、甲基丙烯酸十二氟辛基（DFMA）和羟丁基乙烯醚（HBVE）单体，采用溶液聚合法制备本疏水性氟乙烯-乙烯酯（FEVE）聚合物。随后，将未改性的SiO2颗粒与CTFE-VAc-DFMA-HBVE聚合物直接复合，通过空气喷涂制备超疏水涂层（CVDH-SiO2）。上述聚合物基涂层仅含有18 wt%未改性的纳米sio2，表现出显著的超疏水性。对超疏水涂层表面自清洁和防污性能的研究表明，即使在暴露于碳粉和浑水等污染物后，它们也能恢复到清洁状态。此外，涂层表现出出色的耐腐蚀性，其低频阻抗值|Z|0.01 Hz达到1.23 × 109 ~ 1.35 × 1010 Ω·cm²，比裸钢（|Z|0.01 Hz=1.37 × 104 Ω·cm²）提高了5个数量级。这些发现表明，CVDH-SiO2涂层对金属具有特殊的防腐作用。本研究为超疏水涂层技术在重腐蚀防护、防污等工业领域的实际工程应用提供了新的可能性。

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来源期刊

Journal of the Taiwan Institute of Chemical Engineers 工程技术-工程：化工

CiteScore

9.10

自引率

14.00%

发文量

362

审稿时长

35 days

期刊介绍： Journal of the Taiwan Institute of Chemical Engineers (formerly known as Journal of the Chinese Institute of Chemical Engineers) publishes original works, from fundamental principles to practical applications, in the broad field of chemical engineering with special focus on three aspects: Chemical and Biomolecular Science and Technology, Energy and Environmental Science and Technology, and Materials Science and Technology. Authors should choose for their manuscript an appropriate aspect section and a few related classifications when submitting to the journal online.