Thermosetting Polymer
Thermosetting polymers are a class of polymers that irreversibly cure or set into a hard solid when heated or exposed to a catalyst. This curing process is called cross-linking, which forms a three-dimensional network of covalent bonds between polymer chains. Once cured, thermosetting polymers cannot be melted or reshaped by heating, unlike thermoplastic polymers. This property makes them ideal for high-temperature applications, such as in the aerospace industry, where they are used in the manufacture of heat shields, ablative materials, and composite structures. Thermosetting polymers also exhibit excellent mechanical and chemical properties, such as high strength, stiffness, and resistance to corrosion and wear. Examples of thermosetting polymers used in space and astronautical engineering include epoxy resins, phenolic resins, and polyimides.
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