| About |
|---|
| Baydur 661 IBS is a gray-pigmented, rigid polyurethane structural foam system used in the reaction injection molding (RIM) process. This system incorporates a specially engineered interactive blowing system (IBS) and is supplied as two reactive liquid components. Component A is a polymeric diphenylmethane diisocyanate (PMDI), and Component B is a formulated polyol system containing no CFC- or HCFC-blowing additives. Note: Component B should be agitated thoroughly prior to delivery of drum contents to day tank due to possible pigment settling. The Baydur 661 IBS system is used in transportation, industrial, and recreational markets. The applications typically take advantage of the material’s strength, excellent surface finish, and large-part capability. As with any product, use of the Baydur 661 IBS system in a given application must be tested (including field testing, etc.) in advance by the user to determine suitability.&& |
| Product Description | |
|---|---|
| Supplier | Covestro |
| Generic | PUR+MDI |
| Material Status | Commercial: Active |
| Features | Good Rigidity,Good surface appearance |
| Availabilitys | Africa & Middle East ,North America,Latin America,Asia Pacific,Europe |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | 0.479 | g/cm³ | ASTM D792 |
| Shrinkage rate | |||
| MD：6.35 mm | 0.30 to 0.50 | % | ASTM D955 |
| IMPACT | Nominal value | Unit | Test method |
|---|---|---|---|
| Charpy Unnotch Impact strength | Internal Method | ||
| — | 9.5 | kJ/m² | Internal Method |
| — | 8.8 | kJ/m² | Internal Method |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Shore hardness | ASTM D2240 | ||
| Shaw D, 6.35 mm | 56 | ASTM D2240 | |
| Shore D, 12.70 mm | 64 | ASTM D2240 | |
| tensile strength | ASTM D638 | ||
| Fracture, 6.35 mm | 13.8 | MPa | ASTM D638 |
| Fracture, 12.70 mm | 12.4 | MPa | ASTM D638 |
| Tensile strain | ASTM D638 | ||
| Fracture, 6.35 mm | 7.0 | % | ASTM D638 |
| Fracture, 12.70 mm | 7.0 | % | ASTM D638 |
| Bending modulus | ASTM D790 | ||
| 6.35 mm | 717 | MPa | ASTM D790 |
| 12.70 mm | 689 | MPa | ASTM D790 |
| bending strength | ASTM D790 | ||
| 6.35 mm | 24.1 | MPa | ASTM D790 |
| 12.70 mm | 26.2 | MPa | ASTM D790 |
| compressive strength | ASTM D695 | ||
| 6.35 mm | 18.6 | MPa | ASTM D695 |
| 12.7 mm | 14.5 | MPa | ASTM D695 |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Hot deformation temperature | ASTM D648 | ||
| 0.45 MPa, unannealed, 6.35 mm | 80.0 | ℃ | ASTM D648 |
| 0.45 MPa, unannealed, 12.7 mm | 90.0 | ℃ | ASTM D648 |
| Thermosetting components | |||
| Component A | 按重量计算的混合比: 120 | ||
| Component B | 按重量计算的混合比: 100 |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
| 2. 0.5 |
| 3. 0.25 in |
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