Amorphous – CP
Commodity Plastics (Amorphous)
PS – Polystyrene – A synthetic aromatic polymer made from the monomer styrene. Polystyrene can be rigid or foamed. General purpose polystyrene is clear, hard, and brittle. Polystyrene is also copolymerized, or blended with other polymers to provide hardness or ridgidity to other polymers. (HIPS)
ABS – Acrylonitrile Butadiene Styrene – ABS is a terpolymer made by polymerizing styrene and acrylonitrile in the presence of polybutadiene. ABS is readily modified both by the addition of additives and by variation of the ratio of the three monomers Acrylonitrile, Butadiene and Styrene: hence grades available include high and medium impact, high heat resistance, and electroplatable. Fibre reinforcement can be incorporated to increase stiffness and dimensional stability. ABS is readily blended or alloyed with other polymers further increasing the range of properties available. Fire retardancy may be obtained either by the inclusion of fire retardant additives or by blending with PVC. The natural material is an opaque ivory colour and is readily coloured with pigments or dyes. Transparent grades are also available.
PMMA – Polymethyl Methacrylate (Acrylic) – PMMA is the synthetic polymer of methyl methacrylate. Its specific properties such as high resistance to UV light and weathering and unlimited coloring options.
SAN – Styrene-acrylonitrile – SAN, the predecessor of ABS is a hard rigid transparent material and a copolymer of styrene and acrylonitrile. It is widely used in place of polystyrene owing to its greater thermal resistance. It is rigid, transparent, tough, resistant to greases, stress cracking and crazing, easily processed, resistant to food stains.
PVC – Polyvinyl chloride – PVC comes in two forms; ridgid and flexible. Before PVC can be made into finished products, it always requires conversion into a compound by the incorporation of additives (but not necessarily all of the following) such as heat stabilizers, UV stabilizers, plasticizers, processing aids, impact modifiers, thermal modifiers, fillers, flame retardants, biocides, blowing agents and smoke suppressors, and, optionally pigments.