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Plastics - Coggle Diagram
Plastics
Problems with plastic usage
Using fossil fuels, they take thousands of years to degrade
typical plastic bag takes 200 years
can recycle
process can be polluting
still likely to end up in landfills
Thermosetting
Cannot be recycled
used for electrical appliances as it burns but doesn't melt
HIPS (High Impact Polystyrene)
Used in vacuum forming
Easy to cut and work with
Polythene
High density
Tough and can be blow moulded into bottles
Low density
Made into films (plastic bags, insulation wires ect...)
Plasticity
Property to be shaped or formed
Polymers
Larger the chain the easier to shape
Thermoplastics
Thermoplastics are recyclable
can be reheated and reshaped
Molecules are loosely linked
PMMA (acrylic)
Vacuum forming/line shaping
ABS
strong, tough, scratch resistant
Injection Moulding
Household products
Polypropylene (PP)
translucent (light passes through)
Raw materials are oil
