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Thermoset Coating

Last updated: November 6, 2019

What Does Thermoset Coating Mean?

A thermoset coating is a protective covering substance made up of lines of polymers that are highly cross-linked linked by strong chemical bonds, and are used to create thin protective layers on metallic surfaces. Thermosetting coatings are resistant to higher temperatures than ordinary thermoplastics.

Thermoset coatings are used to prevent corrosion and other forms of degradation.


Corrosionpedia Explains Thermoset Coating

The cross-linked structures produced by the chemical bonds in thermoset materials are directly responsible for their relatively higher mechanical and physical strength compared to thermoplastics or elastomers. However, thermoset materials provide poor elasticity or elongation of the material—once hardened, thermoset materials cannot be reheated and melted to be shaped differently.

Examples of thermoset coatings include epoxy resins, phenolic resins and polyester. They are often resistant to melting, creeping and swelling.


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