Polymer Technology
Thermocole (expanded polystyrene) is not used for

Low temperature thermal insulation as in refrigerator and air conditioners
High temperature thermal insulation in furnaces
Accoustic control and ceiling for building
Packing of delicate electronic gadgets

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Polymer Technology
Polyvinyl chloride (PVC)

Can be made thermosetting by adding a plasticiser
Uses either emulsion or suspension polymerisation methods
Is produced by polycondensation reaction
Softening temperature is 200°C

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