Sulfone polymers or polysulfones (PSUs) is the class of high temperature thermoplastics which contains a common structural unit diphenyl sulfone. The polymers of this family (standard PSU, polyaryl sulfone, polyether sulfone, polyphenyl sulfone) are characterized by extraordinary, inherent flame retardancy and high transparency.
POLYETHERSULFONE is one of the high-temperature engineering thermoplastics in the polysulfone family.
It is an amorphous, transparent thermoplastic. It is rigid, tough, and dimensionally stable over a wide temperature range.
The low flammability and low smoke generation of PES make it a good candidate to meet FAA regulations for aircraft interior parts. Unreinforced grades are used in high-temperature electrical applications, bakery oven windows, and medical components. The reinforced grades are incorporated in radones, airplace components and automotive parts.
It can be processed on conventional injection molding, blow molding, extrusion and thermoforming equipment.
Of all the polyarylsulfones (PSU, PESU, PPSU), PESU has the highest values of temperature resistance and tensile modulus in elasticity. PESU properties are similar to those of PSU, although it exhibits a higher impact strength and better chemical resistance. Its stiffness and stability are high, and its notch sensitivity is low.