Polyarylsulfones

Polyarylsulphones (PSU, PPSU) are a family of thermoplastic, amorphous and polar polymers. These materials have high strength and stability, even at elevated temperatures.
Polyetherimide (PEI) is very similar to polysulphone and therefore belongs to the same product category.

  • rigid
  • high strength
  • transparent (yellowish)
  • dimensionally stable
  • can be sterilized by superheated steam, resistant to hot water
  • good chemical resistance

Ensinger offers the following Polyarylsulfones:

TECASON P (PPSU)

Polyphenylsulphone (PPSU) - TECASON P - is an amorphous plastic. This material combines a high melting temperature with quite a low moisture absorption.  Furthermore, it has better impact strength and chemical resistance than PSU and PES from the polysulphone group. Apart from these characteristics, PPSU can be better sterilized with superheated steam than other members of this group of polymers, and is resistant to detergents and disinfectants.

  • high operating temperature (180°C)
  • good chemical resistance
  • excellent resistance to hydrolysis (suitable for repetitive steam sterilization)
  • high rigidity over a wide range of temperatures
  • very high impact strength
  • high dimensional stability
  • very good resistance against high energy radiation (gamma and X-rays)
  • good electrical insulating properties
  • favourable dielectric characteristics

TECASON S (PSU)

Polysulphone (PSU) - TECASON S - is a thermoplastic with high mechanical strength and rigidity. Apart from the high permanent operating temperature, outstanding characteristics include a remarkably high creep strength over a wide range of temperatures. Due to its amorphous molecular structure, polysulphone is translucent and has a light-brown transparency. A high dimensional stability and very good resistance to hydrolysis rounds off the picture.

  • high operating temperature (160°C)
  • very good resistance to hydrolysis (suitable for repetitive steam sterilization)
  • high toughness, even at low temperatures
  • high dimensional stability
  • good electrical insulation
  • high mechanical strength
  • high rigidity
  • high creep resistance over a wide range of temperatures
  • good radiation resistance

TECASON E (PES)

Polyethersulphone (PES) - TECASON E - is an amorphous thermoplastic.
The characteristics of this material are similar to those of PSU. PES has high mechanical strength and rigidity with relatively low notch sensitivity. Furthermore, PES has good chemical resistance and is resistant to hydrolysis. Due to its amorphous structure, the slightly yellowish material is transparent.
Compared to PSU, PES has better chemical resistance as well as higher impact strength.

  • high operating temperature (180°C)
  • good chemical resistance
  • good resistance to hydrolysis (limited suitability for repetitive steam sterilization)
  • high rigidity over a broad range of temperatures
  • low notch impact sensitivity
  • high dimensional stability
  • good electrical insulating properties
  • favourable dielectric characteristics

TECAPEI (PEI)

Polyetherimide (PEI) - TECAPEI - is an amorphous thermoplastic with high mechanical strength and rigidity. Due to its characteristics, PEI is very similar to the polyarylsulphones. This material has a remarkably high creep resistance over a wide temperature range. Furthermore, PEI has a high permanent operating temperature. The very good resistance to hydrolysis together with its dimensional stability round off the portfolio of properties. Due to its amorphous molecular structure, PEI is transparent and golden yellow in colour.

  • high permanent operating temperature (170°C)
  • high mechanical strength
  • high rigidity
  • high creep resistance over a wide temperature range
  • high dimensional stability
  • very good resistance to hydrolysis (suitable for repetitive steam sterilization)
  • good electrical insulation
  • good radiation resistance