PLASTICS MATERIALS

PLASTICS MATERIALS

1. What are?

   • long chains of molecules of carbon

2. origin

   • Natural
     • vegetable (latex, cellulose)
     • animal ( casein )
   • synthetic
     • carbon
     • natural gas
     • petroleum

3. transformation (polymerisation)

   • chemical aditives
     • to increase flexibility and resitance
   • fillers (sawdust, fibreglass, mineral, paper)

4. Properties:

   • malleable
   • resistance
     • compression
     • streching
     • twisting
     • bending
   • ductile ( into thrends)
   • insulator
     • electrical
     • thermal
     • acoustic
   • recyclacle
     • chemical
     • mechanical
     • energy
   • impermeable
     • gas
     • liquid