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plastics - Coggle Diagram
plastics
raw materials-oil based
bad for environment
uses fossil fuel
takes very long to decomposse naturally(100s of years)
can recyle
thermo-plastics
can be recyled
can be re-heated and re-shaped
molecules are loosely linked
thermo setting plastics
once set,cannot reheated
electrical fitting
epoxy resin
adhesive
good for joining different material together
strong bond
types of thermo plastics :
ABS
injection moulded
household products
Artlic
vacuum forming/line bending/below moulding
PP
polystyrene
easy to cut
translucent
HIPS
high impact polystyrene
polythene
HDPE
high density polythene
LDPE
low density polythene
Urea formaldehyde-UF
good insulator
hard
melaine
scratch,water
