A Coggle Diagram about Formation Techniques ( Moulding, Extrusion, Lamination and Vacuum forming ), Plastics are materials formed by polymers. The polymers in plastics are made from long chains of carbon atoms., Ecological properties, Properties (Mechanical: malleabrlity, ductility, mechanical resistance
Acoustic: acoustic insulation
Electrical: electncal insulation
Thermal: thermal insulation
Other properties: low density, impermeability), Thermostable plastics , Thermoplastics (-We manufacture thermoplastics from compounds acquired from petroleum.
-They' re made up of weakly formed molecular chains.
-When we heat them, they become soft, which allows them to be formed into different shapes.
-The heating and cooling process can be repeated many times.
) and Elastomers (Made by vulcanisation mixing sulphur and rubber, and heating to 160'C.
They are hard, resistant and very elastic stretching easily under force.
They' re formed by chains linked laterally and then folded over themselves, like a ball of wool or string )