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PLASTICS - Coggle Diagram
PLASTICS
ORIGIN AND TRANSFORMATION
Natural plastics are obtained directly from raw vegetable materials
Synthetic plastics are made from compounds extracted from petroleum, natural gas and carbon. The majority plastics belong to this group
The transformation is called polymerisation
During the manufacturing process, we can add materials to reduce production costs, and to develop certain characteristics. We can incorporate chemrcal additives to increase flexlbdity and to strengthen the polymers, , and we can add pigments to give colour to
the plasucs.
CLASSIFICATION
Thermoplastics
Polyvinyl chloride, polystyrene, polythene, polypropylene, polymethyl methacrylate, teflon, cellophane, nylon
Thermostable plastics
Polyurethane, phenolic resins, melamine formaldehyde, polyester resins
Elastomers
Naturalrubber, synthetic rubber, neoprene
PROPERTIES
Strength, elasticity, rigidity, flexibtflty, mechanical, acoustic, electrical, thermal, low density and impermeability
ECOLOGICAL
Chemical recycling, mechanical recycling, energetic recycling
FORMATION TECHNIQUES
Extrusion, lamination, vacuum forming
Moulding
Injection moulding
Blow moulding
Compression
Are materials formed by polymers