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Overview of Polysulfone (PSU)

Overview of Polysulfone (PSU) including background, history, advantages, limitations and typical applications.

Background: Polysulfone (PSU), introduced by Union Carbide in 1965, was among the first thermoplastics developed for long term service beyond 300°F.
 PSU Generics
- PES
- PSU
- PPSU
- PAS
- PSU Alloy
- PSU+PC
- PSS
- PSU+ABS
 
 Typical PSU Applications

- Electrical/Electronic Applications
- Food Service Applications
- Medical/Healthcare Applications
- Electrical Parts
- Automotive Applications
- Appliances
- Automotive Electronics
- Appliance Components
- Connectors
 
 Advantages of PSU
- Flame Retardant
- Lubricated
- Dimensional Stability, Good
- Heat Resistance, High
- Toughness, Good
- Chemical Resistance, Good
- Creep Resistance, Good
- Rigidity, High
- ESCR, High (Stress Crack Resist.)
 
 Disadvantages of PSU
- Attacked by some solvents
- Poor weatherability
- Subject to stress cracking
- Processing difficulties
- Increased costs
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