Engineering plastics – The Manual - F.wood-supply.dk

Values
TECASON P
(PPSU)
TECASON S
(PSU)
T g 218 °C 188 °C
Density 1.31 g/cm³ 1.24 g/cm³
(can differ depending
on colour)
Modulus of elasticity 2,300 MPa 2,700 MPa
Service temperature, long-term 170 °C 160 °C
Service temperature, short-term 190 °C 180 °C
Lower service temperature –50 °C –50 °C
(Exceptions
down to –100 °C)
Identifying characteristics
ˌˌColour translucent, amber coloured,
darkening with PPSU on
rising glass transition temperature
ˌˌLow flammability
ˌˌBurns with luminous yellow, sooting flame
ˌˌExtinguishes slowly after removing the flame
ˌˌPungent odour
ˌˌDissolves in methylene chloride
Products / Modifications
TECASON P MT coloured (PPSU)
Special type in a variety of colours
for medical technology, tested
biocompatibility, suitable for
contact with foods
TECASON P VF (PPSU)
Unreinforced basic type,
calendered for deep-drawn
products, transparent and in
opaque colours
TECASON P MT XRO coloured
(PPSU)
Special type for use in medical
technology, biocompatible, x-ray
opaque
TECASON S (PSU)
Unreinforced basic type,
compatible for food contact
TECASON E GF30 (PES GF)
non-standard production,
preferably for injection moulding,
glass fibre reinforced for high
strength, electrical components,
flame retarded
Application examples
PPSU is used preferably in medicine in the field of joint
prosthetic surgery for adjustment models, for device handles,
sterilization and storage containers, food and pharmaceuticals
production plants.
PSU for chemical and laboratory equipment, plug components,
lamp fittings, electrical engineering, for high-frequency
technology, aerial carriers, coil formers, microwave
equipment, microelectronics, test adapters.
PES GF is used preferably for injection moulding of highstrength,
rigid precision electrical components with flame
retardant properties.
Summary
PES has been superseded by the product development of
PPSU, and is only of significance nowadays for the manufacture
of special products. The typical characteristic profiles
of the three amorphous polysulphone polymers (PSU,
PPS, PES) are very similar. The main differences are in
their glass transition temperatures and service temperature
ranges.
The strength value, toughness and chemical resistance levels
of the three differ only in detail. Also in comparison to
PEI, certain properties overlap. However, it offers significantly
higher mechanical characteristic values (strength,
rigidity and hardness) as well as being excellently suited for
safety-relevant applications in aviation.
Due to its relatively high moisture absorption, PES frequently
demonstrates problematic behaviour during superheated
steam sterilization with vacuum phase (crack formation).
Alongside PEEK, PPSU is a highly important plastic for use
in medical applications, for instance in the field of devices
used in imaging diagnostics, OP equipment and orthopaedic
technology for joint replacement.
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