Processing and molding easier

- Sep 11, 2017 -

Thermoplastic softening or melting when heated, after cooling hardening, stereotypes, hot and cold process does not occur in chemical changes, and regardless of heating and cooling to repeat the number of times, to maintain this performance, and thus the processing is relatively simple and has a high mechanical properties , But the heat resistance and rigidity is poor. Thermoplastic resins are linear molecular structure, including all the polymer resin and part of the condensed resin, the typical varieties are polyethylene, polypropylene, polystyrene, polyvinyl chloride, polymethyl methacrylate, ABS plastic, poly Amide, polyoxymethylene, polycarbonate, polyphenylene ether and the like.

Thermosetting plastics in the processing process, the first softening heat, and then curing molding, hardening can no longer soften, the process of chemical changes in the process of adjacent molecules cross-linked into the body structure and hardened into insoluble material, its Heat resistance and stiffness are good, but the mechanical strength is low. Most of the plastic made from the condensed resin is thermosetting, such as phenolic, epoxy, amino resin, unsaturated polyester and polysilicate resin made of plastic.

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