About |
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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.&& |
Product Description | |
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Supplier | Covestro |
Generic | PUR |
Material Status | Commercial: Active |
Availabilitys | Africa & Middle East ,North America,Latin America,Asia Pacific,Europe |
Technical Data | |||
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THERMAL | Nominal value | Unit | Test method |
Thermosetting components | |||
Component A | 按重量计算的混合比: 130 | ||
Component B | 按重量计算的混合比: 100 |
MECHANICAL | Nominal value | Unit | Test method |
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Shore hardness | |||
Shore D, 12.70 mm | 43 | ASTM D2240 | |
tensile strength | |||
Fracture, 12.70 mm | 5.86 | MPa | ASTM D638 |
Bending modulus | |||
12.70 mm | 306 | MPa | ASTM D790 |
bending strength | |||
12.70 mm | 9.13 | MPa | ASTM D790 |
compressive strength | |||
12.7 mm | 6.51 | MPa | ASTM D695 |
Notes |
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1. Typical properties: these are not to be construed as specifications. |
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