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Plastics (thermoforming plastics (Can be reheated, Recyclable, Can be…
Plastics
thermoforming plastics
Can be reheated
Recyclable
Can be flexible
Pigments can be added to self colour
Can be rigid
Good thermal and electrical insulators
100% recyclable
Can be repeatedly remoulded and reshaped
Form weak crosslinks
thermosetting plastics
general properties
Hard and rigid
Excellent thermal insulator
Will not melt
Excellent electrical insulator
Cannot be reshaped
Cannot be recycled
Not 6R friendly
Chemical resistant
Waterproof
Most are factory made
ideal for heat resistant products
Form permanent cross links
Bioplastics
Biopol
Made from plant sugars and glucose
Compostable
Carbon neutral process
Non toxic
Produced in a closed loop carbon cycle
sinks unlike most plastics
Insoluable in water
Expensive to produce at present
General properties
toughness
good insulator of heat
good insulator of electricity
All plastics are Polymers
Natural Plastics
Fossilised = Amber
Animals horn and bone = keratin
Trees rubber/latex
insects shellac
Standard Stock sizes
Granules
square and round rod
sheets
Square and round tube
Powder
Synthetic (often referred to as Polymers)
Carbon based
Coal
Natural gas
Crude oil
CommonThermoplastics
Common Thermosetting plastics
Products made from Biopol