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Baydur® 684 (25 pcf)
| Category: | PUR, Unspecified , Polyurethane |
| Manufacturer: | Covestro - PUR |
| Trademark: | Baydur® |
| Fillers: | - |
| Ports: | Qinzhou, Shekou, Shanghai, Ningbo |
| Delivery Terms | FOB, CIF, DAP, DAT, DDP |
| PDF: | 94F6A2_Baydur-684-25-pcf-.pdf  |
| PRICE: | Order Products email sales@su-jiao.com |
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Baydur 684 is a rigid polyurethane structural foam system used in the reaction injection molding (RIM) process. The system 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. The Baydur 684 system is used for applications requiring high compression strength foams,filling cavities and/or producing foam cores for overmolding. As with any product, use of the Baydur 684 system in a given application must be tested (including field testing, etc.) in advance by the user to determine suitability. |
| General Information | |
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| Uses |
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| Processing Method |
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| Hardness | Nominal Value | Test Method | |
|---|---|---|---|
| Durometer Hardness (Shore D, 12.7 mm) | 50 | ASTM D2240 |
| Mechanical | Nominal Value | Unit | Test Method |
|---|---|---|---|
| Tensile Strength (Break, 12.7 mm) | 11.0 | MPa | ASTM D638 |
| Flexural Modulus (12.7 mm) | 434 | MPa | ASTM D790 |
| Flexural Strength (12.7 mm) | 13.3 | MPa | ASTM D790 |
| Compressive Strength (12.7 mm) | 10.7 | MPa | ASTM D695 |
| Thermoset | Nominal Value | ||
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| Thermoset Components | |||
| Component a | Mixing ratio by weight: 130 | ||
| Component B | Mixing ratio by weight: 100 |
| Additional Information |
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| Part A Type: Isocyanate Specific Gravity @ 25°C: 1.24 Viscosity @25°C: 200 cps Part B Type: Polyol Specific Gravity @ 25°C: 1.08 Viscosity @25°C: 900 cps Machine Reactivity at 80°F Cream Time: 16 sec Gel Time: 55 sec Tack Free Time: 80 sec Free Rise Density: 5.6 pcf |
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