PLASTICS

PLASTICS

1. Thermoplastics

   • It react by hit (fire) and it can be melted as many times as you want
   • Materials
     • Polyethylene (PE)
       • Good chemical resistance. Its non-toxic.
       • Examples:Bags,bottles, containers
     • Polystyrene (PS)
       • Lightweight and a transparent plastic
       • Example : a Pen
     • PVC (polyvinyl chloride
       • Resistant to abrasion and impact
       • Example :cable insulation
     • Polypropylene (PP)
       • Its easy to model and dye
       • Example : folder
     • PET (polyethylene terephthalate )
       • Food use, recyclable, transparent and easy to dye
       • Example : Bottles
     • Teflon
       • Resistant to chemicals and high temperatures and its not sticky
       • Example : frying pans
     • Polycarbonate (PC)
       • Resistant to impact and heat
       • Examples :smartphones

2. Thermoset

   • It can be melted and shaped by hit but it can't be melted again
   • Materials
     • Melamine
       • Resistant to high temperatures and chemicals. Easy to clean
       • Example : coating for wooden boards
     • Bakelite
       • Dark plastic that resist heat very well
       • Example :handles
     • Polyester resins
       • Rigid and brittle. Its usually strengthened with fibreglass
       • Example : car bodies

3. Elastomers

   • Flexible materials that recover to its original shape when external forces stop acting on it
   • Materials
     • Rubber
       • It can be natural or synthetic. Its also an elastic material
       • Example : rubber bands
     • Noprene
       • Flexible, insulated and waterproof
         • Example : immersion suits