Polyurethane (PU)
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Polyurethane (PU)
Polyurethane is a versatile polymer available in foam, elastomer, and solid forms. Known for its flexibility, impact resistance, and cushioning ability, PU is widely used in insulation, sealing, and vibration damping.
- Highly flexible and resilient
- Good impact and abrasion resistance
- Available in rigid and foam variants
- Excellent sealing and insulation
• Foam cushions and mattresses
• Industrial wheels and rollers
• Seals, gaskets, and hoses
• Shoe soles and coatings
Product Property & Details
| Property | Details |
|---|---|
| Types Available: | Rigid, Flexible, Elastomeric |
| Density: | 1.10 – 1.25 g/cm³ |
| Hardness: | Shore A: 30–95 / Shore D: 40–80 |
| Impact Strength: | Excellent |
| Thermal Conductivity: | 0.02 – 0.04 W/m·K (foamed) |
| Coefficient of Thermal Expansion: | 50 – 150 ×10⁻⁶ /°C |
| Glass Transition Temperature: | -50°C to +50°C (varies by type) |
| Melting Point: | Thermoset (does not melt) |
| Dielectric Strength: | 20 – 40 kV/mm |
| Flammability Rating: | UL 94 HB (some grades V-0) |
| UV Resistance: | Poor (can yellow) |
| Weatherability: | Poor to Good (varies) |
| Moisture Absorption: | ~0.5% – 1% |
| Creep Resistance: | High |
| Chemical Resistance: | Excellent to oils, poor to water, acids |