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Baydur® 641 IBS (20 pcf)
| Category: | PUR-MDI , Polyurethane (MDI) |
| Manufacturer: | Covestro - PUR |
| Trademark: | Baydur® |
| Fillers: | - |
| Ports: | Qinzhou, Shekou, Shanghai, Ningbo |
| Delivery Terms | FOB, CIF, DAP, DAT, DDP |
| PDF: | nRYGmb_Baydur-641-IBS-20-pcf-.pdf  |
| PRICE: | Order Products email sales@su-jiao.com |
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Baydur 641 IBS is a rigid polyurethane structural foam system used in the reaction injection molding (RIM) process. This system is supplied as two reactive liquid components and is typically used with a blowing paste purchased separately. Component A is a polymeric diphenylmethane diisocyanate (PMDI). Component B is a formulated polyol system containing no CFC- or HCFC-blowing additives. The blowing paste is Baydur PU-1731. The Baydur 641 IBS system is used in the industrial and medical equipment markets for applications requiring dimensional stability and excellent surface finish, such as, rollers for photographic and X-ray film processing equipment. As with any product, use of Baydur 641 IBS 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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| Features |
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| Uses |
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| Processing Method |
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| Physical | Nominal Value | Unit | Test Method |
|---|---|---|---|
| Specific Gravity | 0.319 | g/cm³ | ASTM D792 |
| Molding Shrinkage - Flow (12.7 mm) | 0.30 - 0.50 | % | ASTM D955 |
| Hardness | Nominal Value | Unit | Test Method |
|---|---|---|---|
| Durometer Hardness (Shore D, 12.7 mm) | 42 | ASTM D2240 |
| Mechanical | Nominal Value | Unit | Test Method |
|---|---|---|---|
| Tensile Strength (Break, 12.7 mm) | 5.24 | MPa | ASTM D638 |
| Tensile Elongation (Break, 12.7 mm) | 8.0 | % | ASTM D638 |
| Flexural Modulus (12.7 mm) | 276 | MPa | ASTM D790 |
| Flexural Strength (12.7 mm) | 11.0 | MPa | ASTM D790 |
| Compressive Strength (12.7 mm) | 3.79 | MPa | ASTM D695 |
| Impact | Nominal Value | Unit | Test Method |
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| Charpy Unnotched Impact Strength 1 | 5.3 | kJ/m² | Internal method |
| Thermal | Nominal Value | Unit | Test Method |
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| Deflection Temperature Under Load (0.45 MPa, unannealed, 12.7mm) | 60.0 | °C | ASTM D648 |
| Thermoset | Nominal Value | ||
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| Thermoset Components | |||
| Component a | Mixing ratio by weight: 110 | ||
| Component B | Mixing ratio by weight: 100 |
| Additional Information |
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| Part A Type: Isocyanate Appearance: Dark brown liquid Specific Gravity @ 25°C: 1.24 Viscosity @25°C: 200 cps Flash Point PMCC: 199°C NCO: 31.5 wt% Part B Type: Polyol Appearance: Pale yellow liquid Specific Gravity @ 25°C: 1.02 Viscosity @25°C: 2000 cps Flash Point PMCC: 187°C Water: 0.45 wt% Hydroxyl Number: 367 KOH/g Material Temperatures: 27 to 35°CMold Temperature: 60 to 70°CHand Mix Reactivity at 25°C Cream Time: 8 to 13 sec Gel Time: 15 to 25 sec Tack Free Time: 23 to 28 sec Free-Rise Density: 7.5 to 10 lb/ft³ Polyol Nucleation Specific Gravity: 0.85 to 0.90 0Typical cure Time, 0.500 in Thickness: 4 sec |
| Note Message | |
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| 1 . | 0.5 in |
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