Polyethersulfone describes a family of thermoplastic polymers. These polymers are known for their toughness and stability at high temperatures. They contain the subunit aryl-SO2-aryl, the defining feature of which is the sulfone group. Polysulfones were introduced in 1965 by Union Carbide.
Polyethersulfone when used in combination with fluoropolymers such as PTFE (polytetrafluoroethylene) create a hard durable finish that has all the attributes of PTFE along with the non-porosity and durability of PES.
Key Characteristics of PES:
- Good thermal properties
- Good chemical resistance
- Excellent non-permeability properties