Thermoplastics are polymers, which soften (becomes pliable and plastic) and melt when heated. In the melted conditions thermoplastics may be formed by various methods (injection molding, extrusion, Thermoforming).
No new cross-links form (no chemical curing) when a thermoplastic cools and harden. Thermoplastics may be reprocessed (re-melt) many times.
Molecules of most of thermoplastics combine long polymer chains alternating with monomer units.
Styrenics: Polysterene (PS), Acrylonitrile-Butadiene-Styrene (ABS), Styrene-Acrylonitrile (SAN), Styrene/Acrylic (S/A), Styrene-Maleic Anhydride (SMA).
Vinyls: Polyvinyl Chloride (PVC), Chlorinated Polyvinyl Chloride (CPVC).
Acrylics: Polymethylmethacrylate (PMMA), Polyvinilchloride-Acrylic Blend (PVC/MA).
Polyesters: Polyethylene Terephtalate (PET), Polyester PETG (PETG), Polybutylene Terephtalate (PBT), Polyarilate (PAR), Liquid Crystal Polyester (LCP).
Polyimides: Polyimide (PI), Polyetherimide (PEI).
Source : SubsTech