Fabrication of a Conductive Additive for the Anticorrosion Enhancement of Zinc-Rich Epoxy Coatings
Source abstract
Abstract
In the study, a conductive polypyrrole (PPy) is deposited on the lamellar sericite powder (SCP) surfaces by an in situ oxidization growth method and the prepared PPy/SCP conductive additive is successfully applied on the zinc-rich primer (ZRP) coating. The equal mass substitution and the equal volume substitution methods of the conductive additives to zinc dusts are discussed, as well as the optimal replacing ratio to achieve the best corrosion protection effect of the ZRP coatings. The results indicate that the equal volume substitution method is in favor of corrosion resistance of coating film. The salt spray test and the electrochemical impedance spectroscopy (EIS) and polarization curves show that the prepared ZRP coating with a 66% zinc content and replacing ratio of 1:3 possesses the best corrosion-resistant performance and an optimal adhesion strength. The replacement of PPy/SCP particles to zinc dusts using the equal volume substitution method is feasible to achieve the improvement in anticorrosion ability through a synergic function of the cathodic protection effect and barrier effect.
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Research context
OpenAlex topics: Conducting polymers and applications · Smart Materials for Construction · Advanced Sensor and Energy Harvesting Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
Datang North China Electric Power Test and Research Institute, Beijing 100043, China
China Datang Corporation Science and Technological Research Institute, Beijing 100032, China
Department of Chemical and Biochemical Engineering, The University of Western Ontario, London, ON N6A 5B9, Canada
Nottingham Ningbo China Beacons of Excellence Research and Innovation Institute, Ningbo 315000, China
Funding
Datang North China Electric Power Test and Research Institute
References (25)
Show source-provided references
1. Bai, Y., Zhang, H., Shao, Y., Zhang, H., and Zhu, J. (2021). Recent Progresses of Superhydrophobic Coatings in Different Application Fields: An Overview. Coatings, 11.10.3390/coatings11020116 ↗
2. Investigation of graphene effect on the anti-corrosion behaviour of polyurethane coatings in sea-water10.1108/ACMM-01-2019-2054 ↗
3. Efficient protection of Mg alloy enabled by combination of a conventional anti-corrosion coating and a superamphiphobic coating10.1016/j.cej.2020.124562 ↗
4. Incorporation of electroconductive carbon fibers to achieve enhanced anti-corrosion performance of zinc rich coatings10.1016/j.jcis.2020.02.002 ↗
5. Effect of chemical conversion induced by self-corrosion of zinc powders on enhancing corrosion protection performance of zinc-rich coatings10.1016/j.corsci.2021.109942 ↗
6. Characterization of zinc-rich powder coatings by EIS and Raman spectroscopy10.1016/S0257-8972(02)00147-0 ↗
7. Effects of highly crystalline and conductive polyaniline/graphene oxide composites on the corrosion protection performance of a zinc-rich epoxy coating10.1016/j.cej.2017.03.061 ↗
8. Electrochemical impedance spectroscopy investigations of epoxy zinc rich coatings: Role of Zn content on corrosion protection mechanism10.1016/j.electacta.2010.04.018 ↗
9. Improvement of electrochemical action of zinc-rich paints by addition of nanoparticulate zinc10.1016/j.corsci.2012.10.004 ↗
10. Respiratory Symptoms and Pulmonary Function Tests among Galvanized Workers Exposed to Zinc Oxide
11. Corrosion study of electrophoretically deposited graphene oxide coatings on copper metal10.1016/j.tsf.2016.09.036 ↗
12. Tan, H., Wang, D., and Guo, Y. (2018). Thermal Growth of Graphene: A Review. Coatings, 8.10.3390/coatings8010040 ↗
13. Conductivity and anticorrosion performance of polyaniline/zinc composites: Investigation of zinc particle size and distribution effect10.1016/j.porgcoat.2011.06.022 ↗
14. Unstirred preparation of soluble electroconductive polypyrrole nanoparticles10.1007/s00604-009-0278-4 ↗
15. Novel zinc-rich epoxy paint coatings with hydrated alumina and carbon nanotubes supported polypyrrole for corrosion protection of low carbon steel: Part II: Corrosion prevention behavior of the hybrid paint coatings10.1002/maco.201206707 ↗
16. Corrosion protection and conducting polymers: Polypyrrole films on iron10.1016/S0013-4686(01)00699-5 ↗
17. Evaluation of synergistic effect of nanozinc/nanoclay additives on the corrosion performance of zinc-rich polyurethane nanocomposite coatings using electrochemical properties and salt spray testing10.1016/j.surfcoat.2012.11.036 ↗
18. Chen, Z., Cai, Y., Lu, Y., Cao, Q., Lv, P., Zhang, Y., and Liu, W. (2022). Preparation and Performance Study of Carboxy-Functionalized Graphene Oxide Composite Polyaniline Modified Water-Based Epoxy Zinc-Rich Coatings. Coatings, 12.10.3390/coatings12060824 ↗
19. Large-scale fabrication of a durable and self-healing super-hydrophobic coating with high thermal stability and long-term corrosion resistance10.1039/D0NR08985K ↗
20. Anticorrosion properties of an epoxy zinc-rich composite coating reinforced with zinc, aluminum, and iron oxide pigments10.1007/s11998-014-9580-0 ↗
21. Mechanism of surface modification for sericite10.1007/s11595-006-3470-y ↗
22. Reinforced Zinc-Silicate Coatings on Anti-Wear Anticorrosion and Water Resistance by Adding Sericite
23. Fabrication of durable fluorine-free polyphenylene sulfide/silicone resin composite superhydrophobic coating enhanced by carbon nanotubes/graphene fillers10.1016/j.porgcoat.2019.04.042 ↗
24. Yang, M.S., Huang, J., Noël, J.J., Chen, J., Barker, I., Henderson, J.D., Zhang, H., Zhang, H., and Zhu, J. (2022). A Mechanistic Study on the Anti-Corrosive Performance of Zinc-Rich Polyester/TGIC Powder Coatings. Processes, 10.10.3390/pr10091853 ↗
25. Influence of heat treatment on the microstructure and corrosion properties of the Inconel-625 clad deposited by microwave heating10.1088/2051-672X/abfc61 ↗