Termokõvenev

Termokõvenev is an Estonian term that translates to thermosetting in English. It refers to a type of polymer that irreversibly hardens when heated. Unlike thermoplastics, which can be repeatedly melted and reshaped, thermosetting polymers undergo a chemical reaction during their initial heating process. This reaction forms strong, permanent cross-links between the polymer chains, creating a rigid, three-dimensional network. Once cured, this network structure prevents the material from softening or deforming when subjected to heat or stress.

The process of curing thermosetting polymers is often referred to as vulcanization, especially in the context of rubber. Common examples of thermosetting plastics include epoxy resins, phenolic resins, and vulcanized rubber. These materials are known for their excellent mechanical strength, thermal stability, and chemical resistance. Due to these properties, thermosetting polymers find applications in a wide range of industries, including automotive (engine parts, tires), aerospace (composites), electronics (insulation, circuit boards), and construction (adhesives, coatings). The irreversible nature of their curing process makes them ideal for applications where durability and resistance to high temperatures are critical.