Zinc-Reduced Anticorrosive Primers—Water-Based Versus Solvent-Based
Source abstract
Abstract
Coating systems used for anticorrosion protection usually consist of a primer, intermediate layers, and topcoats. Zinc-rich primers, which serve as cathodic and barrier protection, are widely used for the corrosion protection of steel structures. Due to the fact that the functioning of the above-mentioned coatings is related to the conduction of galvanic current, these types of coatings are highly pigmented with zinc (up to 80 wt% in the dry coating). This may result not only in a deterioration of the performance of the coating system but also have a negative impact on the environment. Taking the above into account, solvent-based and water-based organic epoxy primers with zinc content reduced to approximately 50% have been developed. Zinc pigments of different shapes and with different surface treatments were used in the primers, as well as pigments without chemical treatment but with the addition of nanoparticles. It was found that, depending on the type of zinc pigment, both the developed solvent-based and water-based primers demonstrate good protective properties comparable to traditional zinc-rich coatings. Water-based paints tend to absorb more moisture compared to solvent-based systems, but their water uptake reversibility is limited. Moreover, the organic treatment of zinc flakes helps to improve this water uptake reversibility, improving the mechanical properties of coatings.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Corrosion Behavior and Inhibition · Nanomaterials for catalytic reactions · Electrochemical Analysis and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Łukasiewicz Research Network, Institute for Engineering of Polymer Materials and Dyes, 87-100 Toruń, Poland
Road and Bridge Research Institute, 03-302 Warsaw, Poland
Fraunhofer Institute for Manufacturing Engineering and Automation, 70569 Stuttgart, Germany
Funding
New generation of zinc primers with improved anticorrosion, application, and ecological properties (ZINCPOWER) · Water-based, environmentally friendly zinc-rich primer systems (EcoWaterZinc) · National Centre for Research and Development (NCBiR) · Industrial research (IGF)
References (67)
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