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Neoprene
(Polychloroprene)
One of the first synthetic rubbers developed in the search for oil resistant rubber. Widely used due to its combination of useful properties and comparatively low price.
Properties
• resistant to a wide range of hostile environments
• resistant to oils and chemicals
• weather and water resistant
• can withstand temperatures from -30°C to 95°C
• easy to process and compound, offering cost benefits
• flame retardant
• can be produced in any colour required
Limitations
• unsuitable for applications requiring contact with fuels
• tendency to tear once there is initial damage
• some Neoprenes may crystallise during storage or
use causing temporary stiffening (increase in
modulus/hardness). If parts are deformed during
crystallisation, they may take on a set. However,
crystallisation is a readily reversible phenomenon and
can be removed by warming over 80°C. It can be
prevented by the use of special grades.
Typical Applications
• most general mechanical applications without contact
with fuel
• particularly useful in marine environments due to
good ozone resistance.
* Neoprene is a registered trade mark of Du Pont.
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