define thermosetting‚thermo plastics and give two examples ’
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A thermoplastic polymer can be repeatedly softened on heating and hardened on cooling. Hence, it can be used again and again. The examples are polythene, polypropylene, etc. A thermosetting polymer is a permanent setting polymer as it gets hardened and sets during moulding process and cannot be softened again.
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thermoplastic, or thermosoftening plastic, is a plastic polymer material that becomes pliable or moldable at a certain elevated temperature and solidifies upon cooling. Thermoplastics differ from thermosetting polymers which form irreversible chemical bonds during the curing process.
examples of thermoset plastics and polymers include epoxy, silicone, polyurethane and phenolic.
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