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> Polycarbonate.
Polycarbonate
is expensive but has high impact resistance and is transparent
or easily coloured. Its high stiffness means it can be used
for thin sections, which is advantageous as this gives a weight
reduction and a shorter moulding cycle due to more rapid heat
transfer. It is often used in the automotive industry and
has additional benefits of low creep and a continuous use
temperature of 115°C
The
fatigue and wear resistance properties of polycarbonate are
good. The main disadvantage of polycarbonate is that it exhibits
rapid stress corrosion in the presence of chlorinated solvents.
One way in which this can be improved is to use blends of
polycarbonate with other thermoplastics.
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