| About |
|---|
| Bayflex MP-25,000 is a solid elastomer which has a flexural modulus of 25,000 psi (172 MPa) at room temperature.* It is processed on reaction injection molding (RIM) equipment and is used for rollers, gaskets, and encapsulated windows. This system combines rapid demold times, excellent integrity at demold, improved release characteristics and outstanding physical properties. As with any product, use of the Bayflex MP-25,000 system in a given application must be tested (including field testing, etc.) in advance by the user to determine suitability. Bayflex MP-25,000 is a formulated RIM system supplied as two liquid components. Component A is a diphenylmethane diisocyanate (MDI) prepolymer, and Component B is a polyether polyol. Note: Component B should be agitated thoroughly prior to transfer of contents from the drum to the day tank.&& |
| Product Description | |
|---|---|
| Supplier | Covestro |
| Generic | PUR-脂肪族+MDI |
| Material Status | Commercial: Active |
| Features | Good stripping performance |
| Availabilitys | Africa & Middle East ,North America,Latin America,Asia Pacific,Europe |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | 1.04 | g/cm³ | ASTM D792 , ASTM D1622 |
| Shrinkage rate | |||
| MD：3.0 mm | 1.5 | % | Internal Method |
| Water absorption rate | |||
| 10days，3.00 mm | 5.0 | % | Internal Method |
| 24hr，3.00 mm | 3.3 | % | Internal Method |
| elastic body | Nominal value | Unit | Test method |
|---|---|---|---|
| tensile strength | ASTM D412 | ||
| Fracture, 3 mm | 24.1 | MPa | ASTM D638 |
| Fracture, 3 mm | 24.1 | MPa | ASTM D412 |
| 20% strain | 7.93 | MPa | ASTM D412 |
| 50% strain, 3 mm | 8.27 | MPa | ASTM D412 |
| 100% strain, 3 mm | 9.65 | MPa | ASTM D412 |
| Tensile strain | |||
| Fracture, 3 mm | 250 | % | ASTM D412 |
| tear strength | |||
| 3.00 mm | 85.8 | kN/m | ASTM D624 |
| Supplementary information | Nominal value | Unit | Test method |
|---|---|---|---|
| Water Immersion（Length Increase，3.00 mm） | 1.4 | % | Internal Method |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Shore hardness | |||
| Shore D, 3.00 mm | 50 | ASTM D2240 | |
| Bending modulus | ASTM D790 | ||
| -30℃，3 mm | 441 | MPa | ASTM D790 |
| 23℃，3 mm | 172 | MPa | ASTM D790 |
| 65℃，3 mm | 124 | MPa | ASTM D790 |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Linear coefficient of thermal expansion | |||
| MD：3 mm | 1.4E-4 | 1/℃ | ASTM D696 |
| Low temperature brittleness | |||
| -50℃，3.00 mm | No Cracking | ASTM D746 | |
| Thermosetting components | |||
| Component A | 按重量计算的混合比: 48 | ||
| Component B | 按重量计算的混合比: 100 | ||
| Storage period | |||
| 30℃ | 26 | wk | |
| stripping time | 0.50 | min |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
| 2. Die C, 20 in/min |
| 3. Die C |
| 4. 105 Index |
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