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THERMOSETTING PLASTICS


Thermosetting plastics are made of cross-linking molecules and this produces a characteristically rigid and hard structure. Therefore, thermosetting plastics can withstand higher compressive forces than thermoplastics without deformation. They are non-flammable and brittle. Also, they have good heat resistance and good abrasion resistance. Unlike thermoplastics, thermosetting plastics cannot be appreciably softened when heated and so cannot be reused. Moreover, excess heating can cause charring. Compared with thermoplastics, creep is very small.


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