Material	PC - polycarbonate
	Polycarbonate is an amorphous plastic with very high impact strength, good ductility and fair stiffness. It is very difficult to break and the material is therefore considered fracture-proof (e.g. bullet-proof glass). Light transmission is 85-90% but depends on the thickness. It has good outdoors resistance in the UV-stabilized form, but it tends to turn yellow by long exposition to sunlight. PC is transparent and can be dyed in many colours.
Danish Name	PC - polycarbonat
Category	Plastics, Thermoplastics
Products	CD compact disc Bullet-proof glass Water container Oxidation flask Cylinder head, model
Processes	Plastic moulding Plastic injection moulding Extrusion Blow moulding Vacuum forming Printing
Similar materials	Acrylic PS
Price	High cost plastic (see also Plastics general overview)
Environmen- tal notes	Creation: Production of 1 kg of PC requires the equivalent of about 2 1/2 kg of oil (raw material and energy). Use: Limited inflammability. Disposal: Incineration in an incineration plant mainly producess water and carbon dioxide. Heating value is equivalent to 1/2 kg of oil.
Additional Info	PC is resistant to oils, fats and alcohol also at high temperatures. Other solvents affect it, and hot water decreases its ductility.
Photo	Thomas Nissen (Computer graphics)
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