termokõvenevate

Termokõvenevate is an Estonian term that translates to "thermosetting" in English, referring to a class of polymers that undergo an irreversible chemical change when heated. Unlike thermoplastics, which can be repeatedly softened by heating and hardened by cooling, thermosetting polymers, once cured, will not soften or melt when reheated. Instead, they degrade or char at high temperatures.

The curing process involves the formation of permanent cross-links between polymer chains, creating a rigid, three-dimensional network structure. This cross-linking is typically initiated by heat, but can also be induced by catalysts or radiation. Common examples of thermosetting polymers include epoxy resins, phenolic resins, polyester resins, and vulcanized rubber.

The unique properties of thermosets, such as high strength, stiffness, thermal stability, and chemical resistance, make them suitable for a wide range of applications. They are widely used in the manufacturing of durable goods, including automotive parts, aerospace components, electrical insulation, coatings, adhesives, and composite materials. The irreversible nature of their curing process contributes to their long-term dimensional stability and resistance to deformation under stress.