PES - Polyetheresulphone
This high performance engineering plastic is an amorphous polymer with
exceptional mechanical features (typical of crystalline polymers). It
also has excellent chemical, electrical and thermal properties.
FEATURES
- resistance to high temperature (heat deflection temp. 200° C.)
- mechanical properties: very high tensile stress, flexural strength,
E.modulus
- flame resistance
- very high chemical resistance
- electrical properties
- transparency
WEAK POINT
The cost is higher than conventional engineering plastics.
APPLICATION
- mechanical: the dimensional stability and heat resistance
are very high. Compressive and flexural strength combined with the tensile
stress are typical of a super-polymer. It is consequently used for high
performance applications such as bearings and precision gears at low
as well as high temperatures
- electrical: the very good insulating and dielectric
properties make it irreplaceable in many electrical applications
- chemical: PES is ideally suited for use in the chemical
industry thanks to its high chemical and thermal resistance. It also
possesses excellent resistance to acids, alkali and salt solutions
- food contact: it is physiologically inert and therefore
it is used for parts in contact with food, even at high temperature.
The excellent chemical properties make it suitable for pump components,
flanges, etc. which are in contact with food liquids. It withstands
hydrolysis and sterilisation as well as the continuous heat cycles in
pressure cookers
Heat Deflection Temperature (1,8 N/mm2 )