Termokset

Termokset is a Finnish term used to describe thermosetting plastics. These are polymers that irreversibly harden when heated, through a chemical cross-linking process. Unlike thermoplastics, which can be repeatedly melted and reshaped, thermosets maintain their shape and strength after curing. This permanent structural change is due to the formation of strong covalent bonds between polymer chains, creating a rigid, three-dimensional network.

The curing process for thermosets typically involves heat, but can also be initiated by catalysts or radiation. Once cured, thermosets are known for their excellent thermal stability, chemical resistance, and mechanical strength. They are often used in applications where durability and resistance to heat and chemicals are crucial. Examples of common thermosets include epoxy resins, phenolic resins, and vulcanized rubber. These materials find widespread use in industries such as aerospace, automotive, electronics, and construction, for products ranging from adhesives and coatings to electrical insulation and structural components. The permanent nature of their hardened state makes them ideal for demanding environments where heat or chemical exposure is a concern.