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Engineering Materials - Thermoset Plastics
Thermoset Plastics

Thermoset plastics such as amino, epoxy, phenolic, and unsaturated polyesters, are so named because they experience a chemical change during processing and become "set", hard solids. Thermosets are highly cross-linked polymers that have a molecular mesh or network of polymer chains like a three-dimensional version of a net. Thermosets undergo a chemical as well as a phase change when they are heated. Once cured they cannot be melted or remolded and are resistant to solvents - that is once they are formed they are 'set' (hence the name).

Thermoset plastics, because of their tightly crosslinked structure, resist higher temperatures and provide greater dimensional stability than do most thermoplastics. Thermosets are tough, durable with high temperature performance, and have found applications in a wide variety of fields including electronic chips, fibre-reinforced composites, polymeric coatings, spectacle lenses and dental fillings.

For more specific examples of thermoset resins and their uses browse the following pages.

Thermoset Plastics

 

 




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