Properties or Plastics

Properties or Plastics

1. Thermosetting

   • Melamine Formaldehyde
     • Heat resistant polymer
   • Epoxy Resin
     • Hardener mixed to produce cast
   • Polyester resin
     • Polymerises at room temp
     • Often reinforced with glass fibre
   • Phenol Formaldehyde
     • Hard
     • Brittle
     • Heat Resistant
   • Urea Formaldehyde
     • Can be moulded into shape when heated

2. Thermoplastic

   • Polythene (HDPE)
     • Stiff
     • Strong
   • Polythene (LDPE)
     • Weaker/ softer than HDPE
     • Flexible
   • Polypropylene
     • High Impact strength
     • Can be flexed many times without breaking
   • High Impact Polystyrene
     • Light
     • Strong
   • Nylon
     • Hard
     • Good resistance to wear/ tear
     • Low friction
   • Rigid PVC
     • Stiff
     • Hard wearing
   • Acrylic
     • Resists weathering
     • Flexible
     • Abrasion resistant
     • Strong
     • Easy to work with
     • Can withstand a long duration in the sun