PSU 1000
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 its materials.
Profile
- 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
Applications
- Manifolds
- Manifolds machined from PSU 1000 Polysulfone plate are optically transparent, able to be sterilised by radiation, and resist cracking from environmental stresses.
- Distributor valves
- In the poultry industry, PSU 1000 Polysulfone parts used on processing lines offer chemical resistance and minimal expansion rates.
- Medical equipment components
- Parts machined from PSU 1000 Polysulfone are compatible with blood on dialysis equipment and can endure repeated autoclaving cycles.
- Steam cleaning equipment inserts
- Inserts made of PSU 1000 Polysulfone reduce chemical attack on the nylon distribution block in hot water and steam cleaning equipment.
- Endoscopic probe positioning ferrule
- Because of its excellent autoclavability, PPSU 1000 was chosen as material for the positioning ferrule on the instrument handle of endoscopic surgical devices.
- Sighting arm and positioning sight
- A fabricated PEI 1000 sighting arm and positioning sight coordinate the exact placement of screws during surgery to realign broken femoral bones. Using the PEI 1000 components, a doctor can view placement through a screen rather than expose his hands to X-rays. After a beam is locked into place, the sight is removed and a hole drilled for a titanium screw to repair the bone.
- Clamps
- The high dielectric strength and inherent low flammability of PEI 1000 make it ideal for clamps used to connect circuit boards to video display units in aeroplanes, tanks and ships.
- Cleaning equipment inserts
- Inserts made of PSU 1000 reduce chemical attack on nylon distribution blocks in hot water and chemical cleaning equipment.
