Covestro Baydur® 742 IBS Polyurethane Structural Foam RIM, Density 32 pcf

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Covestro Baydur® 742 IBS Polyurethane Structural Foam RIM, Density 32 pcf
Categories:	Polymer; Thermoset; Polyurethane, TS; Thermoset Polyurethane Foam, Unreinforced
Material Notes:	Characterization: Baydur 742 IBS is a semirigid polyurethane structural foam system used in the reaction injection molding (RIM) process. Properties / Applications: Baydur 742 IBS is a semirigid polyurethane structural foam system used in the reaction injection molding (RIM) process. This system incorporates a specially engineered interactive blowing system (IBS) and is supplied as two reactive liquid components. Component A is a modified polymeric diphenylmethane diisocyanate (PMDI) prepolymer blend, and Component B is a formulated polyol system containing no CFC- or HCFC-blowing additives. Baydur 742 IBS system is used in the consumer products market for applications requiring some protective cushioning characteristics. The system is typically molded at medium-to-high densities. As with any product, use of the Baydur 742 IBS system in a given application must be tested (including field testing, etc.) in advance by the user to determine suitability. Information provided by Covestro
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Physical Properties	Original Value	Comments

Specific Gravity	0.510 g/cc	ASTM D792
Linear Mold Shrinkage	0.0090 - 0.011 cm/cm

Mechanical Properties	Original Value	Comments
Hardness, Shore D	41	ASTM D2240
Tensile Strength at Break	6.55 MPa	ASTM D638
Elongation at Break	125 %	ASTM D638
Flexural Strength	6.55 MPa	ASTM D790
Flexural Modulus	118 MPa	ASTM D790
Charpy Impact Unnotched	NB

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PCOVEST0095 / 201878

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