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Corrosion can seriously damage the substrate and can lead to significant repair or replacement costs. Good corrosion protection for metal coatings is traditionally achieved through two component (2K) systems. However, they show certain disadvantages that do not exist for one component (1K) systems.
Corrosion can seriously damage the substrate and can lead to significant repair or replacement costs. Good corrosion protection for metal coatings is traditionally achieved through two component (2K) systems. However, they show certain disadvantages that do not exist for one component (1K) systems. 1K systems are generally considered to have a much lower performance level than 2K systems, also in corrosion protection. A new ambient curing cationic, epoxy-amine adduct combines the advantages of a 1-pack system with a very high level of corrosion resistance, clearly outperforming the traditional 1-pack systems.
The creepage of corrosion underneath a coatings film applied to a steel test panel is often used as a performance test for the anti-corrosion properties of a coating system. Underfilm corrosion creep, also sometimes referred as scribe creep in the laboratory environment, is defined as the degree of corrosion emanating away from a scribe line underneath a coating film applied to a steel substrate.
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This presentation will cover Why adheson matters, paint Specifications and test methods.
Pull-off adhesion behaviors of 15 coating systems in three groups were studied utilizing test method ASTM D4541. Three groups of coating systems included coating systems with organic or inorganic zinc-rich primers, polymeric polyurea coatings, and overcoating systems applied on an existing coating system.