Polyurethane
Polyurethane (PU) is an extremely versatile, abrasion resistant material.
Typical applications
- High hydraulic/high-tress/wear applications
- Coatings
- Adhesives
- Print rollers
- Bumpers
- Couplers
Advantages
Disadvantages
Properties
Resistance
Advantages
- Excellent physical strength
- Excellent tear and abrasion attributes
Disadvantages
- Poor high temperature resistance
- Not suitable for hot water/steam applications or ketones, concentrated acids, hydrocarbons or esters
Properties
| Available hardness range (Shore A) | 25 – 85 |
| Upper continuous service temp | 150°C |
| Min. temp. for sealing applications | -50°C |
| Minimum non-brittle temp | -80°C |
| Tensile strength (up to) | 30 MPa |
| Elongation at break (up to) | 600% |
Resistance
| ASTM 1 Oil | Excellent |
| ASTM 2 Oil | Good |
| ASTM 3 Oil | Good |
| Kerosene | Excellent |
| Liquid B | Average |
| Liquid 101 | Good |
| Phosphate ester | None |
| Ketone | None |
| Toluene | None |
| Iso-octane | Good |
| Methanol | None |
| Acid (weak) | None |
| Acid (strong) | None |
| Base (weak) | None |
| Base (strong) | None |
| Hydrogen sulphide | None |
| Steam | None |
| Ozone | Excellent |
| Radiation | Average |
