1. Fundamental PropertiesTable 1: Typical Technical SpecificationsParameterSpecification R
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| Parameter | Specification Range | Test Method |
|---|---|---|
| Application Temperature | 110-140°C | ASTM D3236 |
| Open Time | 30-180 seconds | ISO 11343 |
| Tensile Strength | 8-20 MPa | ISO 527 |
| Elongation at Break | 200-500% | ISO 527 |
| Peel Strength (Textile/Substrate) | 6-12 N/mm | DIN 53282 |
| Viscosity @ 120°C | 5.000-25.000 mPa·s | ASTM D3236 |
| Densità | 1.10-1.25 g/cm³ | ISO 1183 |
| Moisture Cure Time (24h) | 70-90% final strength | - |
| Component | Bonding Requirements | PUR Advantages |
|---|---|---|
| Headliners | Lightweight bonding, sag resistance | Excellent initial grab |
| Door Panels | Structural integrity, vibration damping | High fatigue resistance |
| Seat Assemblies | Foam-to-fabric bonding | Penetration control |
| Instrument Panels | Multi-material bonding | Thermal stability |
| Acoustic Insulation | Porous material adhesion | Deep fiber anchoring |
| Decorative Trims | Precision application | Clean processing |
| Characteristic | Reactive PUR HM | EVA Hot Melt | Solvent-based PU | Acrylic PSA |
|---|---|---|---|---|
| Initial Tack | ★★★★ | ★★★★★ | ★★ | ★★★★★ |
| Final Strength | ★★★★★ | ★★ | ★★★★ | ★★★ |
| Heat Resistance | ★★★★☆ (150°C) | ★★ (80°C) | ★★★★ (120°C) | ★★ (70°C) |
| Vibration Damping | ★★★★★ | ★★ | ★★★★ | ★★★ |
| Curing Mechanism | Moisture | Physical | Chemical | Physical |
| VOC Emission | <50g/L | <20g/L | 300-600g/L | <5g/L |
| Substrate Versatility | ★★★★★ | ★★★ | ★★★★ | ★★★★ |
Application Equipment:
Optimal Conditions:
| Substrate Type | Surface Preparation | Bond Strength Rating |
|---|---|---|
| PP/EPDM | Flame treatment | ★★★☆ |
| ABS/PC | Solvent wipe | ★★★★★ |
| Polyurethane Foam | None required | ★★★★★ |
| Nylon Fabrics | None required | ★★★★☆ |
| Aluminum | Abrasion + cleaning | ★★★★ |
| Leather | Mechanical abrasion | ★★★★☆ |
| Requirement | Test Method | Target Value |
|---|---|---|
| Heat Aging (120°C/1000h) | ISO 188 | ≤20% strength loss |
| Cold Flexibility (-40°C) | DIN 53122 | No cracking |
| Fogging Test | SAE J1756 | <3mg |
| Odor Evaluation | VDA 270 | ≤3.5 rating |
| Flammability | FMVSS 302 | Self-extinguishing |
Next-Gen Developments:
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