write two points of difference between thermosetting plastic and thermoplastic
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Thermo plastics
1 It can be melted and recycled.
2 Prepared mostly by additional polymerisation.
3 Mostly processed by conventional methods such as injection molding, extrusion and blow molding.
4 Examples include polyethylene (PE), polyethylene terphthalate (PET).
Thermosetting plastics --
1 It cannot be melted and recycled.
2 Prepared mostly by condensation polymerisation.
3 Mostly processed by special methods such as compression, transfer and casting.
4 Examples include Phenol formaldehyde, melamine formaldehyde.
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