PSU / Polysulphone
This unreinforced amorphous thermoplastic material has a lot
of features in common with PPSU and PEI.All three offer a combination of excellent
mechanical, thermal and electrical properties.
MAIN CHARACTERISTICS
* High maximum allowable service temperatures in air (180°C, 170°C and 150°C continuously for PPSU 1000, PEI 1000 and PSU 1000 respectively)
* High mechanical strength, stiffness and creep resistance, also at elevated temperature
* Excellent hydrolysis resistance (suitable for repeated steam sterilisation)
* High toughness, even at low temperatures
* Physiologically inert (suitable for food contact)
* Very good dimensional stability
* Translucent, non-optical quality (except for PPSU 1000 which is black)
* Very good resistance against high energy radiation (gamma and X-rays)
* Good electrical insulating and dielectric properties
PSU 1000 natural (yellow, translucent) [PSU]
PSU 1000 stock shapes are produced from non-UV-stabilised
polysulphone resin. It offers very good radiation stability, low ionic impurity levels and good chemical and hydrolysis resistance. Compared to PEI 1000, it has a lower property profile, often replacing polycarbonate whenever higher temperature resistance and improved chemical resistance are required. PSU 1000 is commonly used in food processing equipment (milk machines, pumps, valves, filtration plates, heat exchangers) and for medical components* subject to repeated cleaning and sterilisation.
* Quadrant Engineering Plastic Products does not allow, approve or support human implantable applications utilising this material.
