Casted poliurethane is a next generation material provided with certified technical characteristics.
There is wide range of poliurethane systems (also with raw material certified for the food industry) able to resist to the most critical chemical and mechanical conditions. We are available to advise you on the best system to manufacture tour items.
Please find below a chart with a poliurethane system in comparison with rubber compounds and silicones.
| Feature | Unit | NR | SBR | NBR | Silicones | Poliurethane |
|---|---|---|---|---|---|---|
| Hardness | Shore | 30-100A | 40-95A | 40-95A | 10-85A | 0-85D |
| Tear Strength Pure | MPa | 28 | 21 | 2 | 3 | 5 |
| Elongation at Break Pure | % | 800 | 700 | 800 | <200 | 100-900 |
| Resilience | A | C | A+-E | |||
| Compression Set | B | B | B-C | C | A+-C | |
| Abrasion Loss | B | C | C | E | A+ | |
| Heat Resistance Pure | °C | 250 | 80-110 | |||
| Minimal Use Temperature | °C | -55 | -45 | -30 | -90 | -40-80 |
| Fire Resistance | E | E | C | B | C-E | |
| Resistivity | B | B | C | A | A | |
| Ageing | C | B | C | A-C | ||
| Oil | E | E | A | D | A | |
| Aliphatic Solvents | E | E | A | E | B | |
| Aromatic Solvents | E | E | C | E | C | |
| Ketones | C | C | E | D | D | |
| Chlorinated Solvents | E | E | C | E | D | |
| Water | B | B | B | A | A | |
| Non-Oxydant Acids | E | E | E | E | E | |
| Oxydant Acids | E | E | E | E | E | |
| Gas Permeability | C | C | B | E | C |
| Rank | Meaning |
|---|---|
| A+ | Excellent |
| A | Very Good |
| B | Good |
| C | Fair |
| D | Weak |
| E | Very Weak |
