N5 Plastics - thermosetting

Thermosetting plastics are

• Once heated and shaped the plastic is set and cannot be remoulded.

• Can be headset and return to their original shape

• Can be reheated and reshaped

select the 2 thermosetting plastics below

• Melamine formaldehyde

• Polypropylene

• ABS

• Urea formaldehyde

Which thermosetting is used to permanently join materials

• Epoxy resin

• Melamine formaldehyde

• Polypropylene

Melamine formaldehyde is… 3 marks

• Rigid and tough

• Scratch resistant

• Heat resistant

• Strong

• buoyant

Urea formaldehyde is…2 marks

• Heat resistant

• Rigid and strong

• Chemical resistant

• Lightweight