PU
List of Elastomer & Rubber Material
List of Plastic Material
List of Metal Material
Price
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Strength
Good resistance to abrasion, tearing, and weathering, wide range of mechanical properties, from soft and flexible to rigid and tough.
Weakness
Susceptibility to degradation when exposed to UV radiation,poor resistance to certain chemicals and solvents.
Common Application
Automotive, construction, furniture, footwear, and coatings.
| Property | Metric | English |
|---|---|---|
| Density | 1.1 – 1.25 g/cm³ | 0.0397 – 0.0450 lb/in³ |
| Shore Hardness D | 20 – 90 | 20 – 90 |
| Min/Max Temperature | -40 °C to 120 °C | -40 °F to 248 °F |
| UL94 Flammability | HB to V-0 | HB to V-0 |
| Elongation at Break | 100% – 600% | 100% – 600% |
*Please Note: Material properties are for reference only and may vary by brand.
How Additives Improve PU Properties?
To meet diverse application demands, various additives are incorporated into PU formulations to improve its properties.
- Plasticizers: Increase flexibility and softness for softer foam or elastomeric parts.
- UV Stabilizers: Protect against degradation and discoloration from sunlight exposure.
- Antioxidants: Prevent oxidation and extend material lifespan.
- Flame Retardants: Enhance fire resistance to meet safety standards.
- Fillers: Improve mechanical strength, reduce cost, or modify hardness.
- Crosslinking Agents: Improve chemical resistance and mechanical durability.
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What is the typical lifespan of PU products under normal conditions?
PU products usually last several years but lifespan depends on exposure to UV, chemicals, and mechanical stress.
Is PU material recyclable or eco-friendly?
PU recycling is possible but less common; environmental impact depends on formulation and disposal methods.
Can PU materials be bonded or coated easily?
Yes, PU can be bonded with adhesives and coated for additional properties like abrasion or chemical resistance.
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