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Volume 14
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10.3390/coatings14070917
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Article

Self-Healing Performance of Cellulose-Based Gel Coating with Highly Loaded Hybrid Inhibitor

by
Xiong Zhao
1,
Jixing Wang
2,
Haibing Zhang
3,
Hailong Zhang
2,4,
Lu Ma
1,
Xianfeng Zhang
1,
Wenhua Cheng
3,
Huiyu Zhang
2,
Ali Hussein Khalaf
2,
Bing Lin
2,* and
Junlei Tang
2,*
1
Science and Technology Research Institute, China Three Gorges Corporation, Beijing 100038, China
2
School of Chemistry and Chemical Engineering & Institute for Carbon Neutrality, Southwest Petroleum University, Chengdu 610500, China
3
State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute, Qingdao 266237, China
4
School of Materials Science and Engineering, Xihua University, Chengdu 610039, China
*
Authors to whom correspondence should be addressed.
Coatings 2024, 14(7), 917; https://doi.org/10.3390/coatings14070917
Submission received: 21 June 2024 / Revised: 15 July 2024 / Accepted: 19 July 2024 / Published: 22 July 2024
(This article belongs to the Section Corrosion, Wear and Erosion)
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Abstract

The self-healing performance of an ethyl-cellulose-based gel coating with different corrosion inhibitors was investigated in this work. Various contents of 11 alkyl imidazoline (IMO-11) were pre-loaded into the gel coating. The EIS results of scratched coatings with inhibitors confirmed the self-healing performance of the coating. As the inhibitor contents increased, the improved self-healing effect was attributed to inhibitor release, while the increased inhibitor content would also affect the film-forming ability and mechanical properties of the composite coating, and lead to the accelerated failure of the coating. Different contents of thiourea and sodium oleate were added to the gel coating with 25% IMO-11. It was hoped that the hybrid inhibitor in the coating would obtain the synergistic effect of different inhibitors during the self-healing progress. The SEM and FT-IR results indicate the hybrid inhibitor was successfully loaded into the gel coating. The EIS and morphology results of scratched coatings confirmed the enhance effect of the synergistic inhibitor on the self-healing performance of the coating. The high content of the hybrid inhibitor could enhance the corrosion protection effect of the intact gel coating. Once the coating is damaged, the fast released inhibitor could extend the corrosion protection time. The synergistic effect difference of thiourea and sodium oleate with IMO-11 did not show much difference in the coating self-healing effect in this work.
Keywords: gel coating; self-healing performance; synergistic effect of inhibitor gel coating; self-healing performance; synergistic effect of inhibitor

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MDPI and ACS Style

Zhao, X.; Wang, J.; Zhang, H.; Zhang, H.; Ma, L.; Zhang, X.; Cheng, W.; Zhang, H.; Khalaf, A.H.; Lin, B.; et al. Self-Healing Performance of Cellulose-Based Gel Coating with Highly Loaded Hybrid Inhibitor. Coatings 2024, 14, 917. https://doi.org/10.3390/coatings14070917

AMA Style

Zhao X, Wang J, Zhang H, Zhang H, Ma L, Zhang X, Cheng W, Zhang H, Khalaf AH, Lin B, et al. Self-Healing Performance of Cellulose-Based Gel Coating with Highly Loaded Hybrid Inhibitor. Coatings. 2024; 14(7):917. https://doi.org/10.3390/coatings14070917

Chicago/Turabian Style

Zhao, Xiong, Jixing Wang, Haibing Zhang, Hailong Zhang, Lu Ma, Xianfeng Zhang, Wenhua Cheng, Huiyu Zhang, Ali Hussein Khalaf, Bing Lin, and et al. 2024. "Self-Healing Performance of Cellulose-Based Gel Coating with Highly Loaded Hybrid Inhibitor" Coatings 14, no. 7: 917. https://doi.org/10.3390/coatings14070917

APA Style

Zhao, X., Wang, J., Zhang, H., Zhang, H., Ma, L., Zhang, X., Cheng, W., Zhang, H., Khalaf, A. H., Lin, B., & Tang, J. (2024). Self-Healing Performance of Cellulose-Based Gel Coating with Highly Loaded Hybrid Inhibitor. Coatings, 14(7), 917. https://doi.org/10.3390/coatings14070917

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