Baydur® 641 IBS (30 pcf)

About
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.&&

Product Description
SupplierCovestro
GenericPUR+MDI
Material StatusCommercial: Active
FeaturesGood surface appearance,Good Dimensional Stability
AvailabilitysAfrica & Middle East ,North America,Latin America,Asia Pacific,Europe

Technical Data
PHYSICALNominal valueUnitTest method
Density0.479g/cm³ASTM D792
Shrinkage rate
MD:12.7 mm0.30 to 0.50%ASTM D955

IMPACTNominal valueUnitTest method
Charpy Unnotch Impact strength9.0kJ/m²Internal Method

MECHANICALNominal valueUnitTest method
Shore hardness
Shore D, 12.70 mm61 ASTM D2240
tensile strength
Fracture, 12.70 mm9.65MPaASTM D638
Tensile strain
Fracture, 12.70 mm8.0%ASTM D638
Bending modulus
12.70 mm483MPaASTM D790
bending strength
12.70 mm20.0MPaASTM D790
compressive strength
12.7 mm8.96MPaASTM D695

THERMALNominal valueUnitTest method
Hot deformation temperature
0.45 MPa, unannealed, 12.7 mm70.0ASTM D648
Thermosetting components 
Component A按重量计算的混合比: 110 
Component B按重量计算的混合比: 100 

Notes
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