Please enable JavaScript.
Coggle requires JavaScript to display documents.
Plastics - Coggle Diagram
Plastics
thermo plastic
can be recycled
can be reheated and re shaped
molecules are loosely linked
types of thermo plastics
acrylic
vacuum forming/blow moulding/line bending
abs
injection moulded
household products
polypropylene (PP)
cut's easily - laser or knife / scores or bends well too
translucent - light passes through
HIIPS )high impact polystyrene)
used in vacuum forming
HDPE high density polythene
tough strong
LDPE low density polythene
squeezy
thermo setting plastic
once set/moulded they can't be reheated
e.g. electrical fittings
closely linked chain of molecules
UF Urea Formaldehyde
good insulator
hard brittle
e.g. plug, toilet seats
epoxy resin
adhesive
good for joining different materials together
strong bond, expensive
melamine
scratch, water resistant
problems / bad for the environment
use fossil fuel oils
can recycle
recycling is possible but the process is polluting and will eventually end up in landfill
takes very long time to decompose naturally (100s of years)
raw material: crude oil
separated using fractional distillation
