Anti-corrosive paint with improved toughness

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A group of scientists developed an anti-corrosive paint with improved toughness by using carboxyl terminated modified epoxy resin.

Epoxy resins despite having excellent adhesion to various substrates, good corrosion and chemical resistance are less suitable for high-performance applications, as they are poor in ductility. In the present study, carboxyl terminated polyethylene glycol adipiate (CTPA) and carboxyl terminated polyethylene glycol succinate (CTPS) modifiers were synthesised and then used to modify bisphenol-A epoxyresin to raise the latter’s toughness.

Mixture of zinc phosphate and red iron oxide

The study showed that in both the cases, 5 wt.% addition gave rise to the highest toughness as well as corrosion protection against salt fog and synthetic sea water exposure. However, between the two modifications the epoxy resin modified with 5 wt.% CTPS gave a better performance and so was pigmented with a mixture of zinc phosphate and red iron oxide to obtain the paint. The study showed that the epoxy resin modified with 5 wt.% CTPS + 30 vol.%pigments gave rise to the highest toughness (flexibility), adhesion and corrosion resistance when applied on to mild steel panels.

Continue at: http://www.european-coatings.com/Raw-materials-technologies/Applications/Anti-corrosive-paint-with-improved-toughness/(cpg)/LA0093?cpg=LA0093&utm_source=newsletter&utm_medium=email&utm_campaign=EC-NL-2018-04-18&utm_content=Anti-corrosive-paint-with-improved-toughness&uid=678731

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