Curing (cross-linking) of thermosetting polymers is accomplished at the fabrication plants rather than the chemical plants that supply the starting materials:

Question

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Curing or cross-linking of thermosetting polymers is typically done at the fabrication plants where the final product is shaped and formed, rather than at the chemical plants where the starting materials (pre-polymers) are produced. This is because curing is the process that gives the thermosetting polymers their final properties, including rigidity and heat resistance, which are necessary for their intended applications.

Curing (Cross-Linking) of Thermosetting Polymers Is Accomplished at the Fabrication