Plastics

Plastics

1. Plastics consist of long chains of molecules

   • Types of plastics
     • Natural plastics
       • Are obtained from vegetables or animal sources
     • Synthetic plastics
       • Are made with compounds that come from petroleum,...etc

2. properties

   • Resistant
   • Insulators
   • Ductile
   • Malleable
   • Light
   • Impermeable
   • Recyclable
     • Chemical recycling
     • Mechanical recycling
     • Energy recovery

3. Non biodegradable plastics

4. Biodegradable plastics

5. Thermoplastics

6. Thermosetting plastics

7. Elastomers

8. Plastics forming techniques

   • Extrusion
   • Calendering
   • Vacuum forming
   • Moulding
     • Blow moulding
     • Injection moulding
     • Compression moulding