CH1012
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PLASTICS
• Polyethylene (HDPE) is produced on a vast
scale (10.4 MT/y) as are: polyvinylchloride (PVC), PolyTetraFluoroEthene (Teflon) …
scale (10.4 MT/y) as are: polyvinylchloride (PVC), PolyTetraFluoroEthene (Teflon) …
• Plastic is a term applied to materials that
can be formed into various shapes by the
use of heat & pressure.
can be formed into various shapes by the
use of heat & pressure.
• Thermoplastic is a plastic
which can be reshaped.
eg. HDPE recycling.
which can be reshaped.
eg. HDPE recycling.
• Thermosetting plastic is
fixed into a shape thru an
irreversible reaction.
eg. rubber
fixed into a shape thru an
irreversible reaction.
eg. rubber
Kevlar®
Kevlar ropes are >20 stronger than steel
ropes
H-bonds
