PPSU/PESU/PSU

Members of thepolysulfone family are among the most thermoplastic materials available. Due to their chemical structure, they are used primarily in high-temperature applications. All members of the polysulfone family exhibit excellent stability at high temperatures. However, they have certain other differentiating characteristics: PSU is predominantly used in applications requiring high creep resistance and suitability for high continuous service temperatures alongside the usual requirements of high mechanical stability and stiffness. A light amber amorphous strucutre, it enables transmission of light and has high dimensional stability and good hydrolysis resistance. Like PSU, PESU is an amorphous transparent plastic with a light yellowish colour. Its properties are similar to those of PSU, although PESU exhibits a higher impact strength and better chemical resistance. Its stiffness and stability are high and its notch snesitivity is low. PPSU has better impact strength than PSU and PESU. It also has higher chemical resistance - particularly to cleaning and disinfecting agents - and a very low rate of water absorption, which makes it suitable or applications involving superheated steam sterilization. Other properties of note are its good dimensional stability and excellent resistance to high-energy radiation.