Covestro Baydur® 730 IBS Polyurethane Structural Foam RIM, Density 25 pcf

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Covestro Baydur® 730 IBS Polyurethane Structural Foam RIM, Density 25 pcf
Categories:	Polymer; Thermoset; Polyurethane, TS; Thermoset Polyurethane Foam, Unreinforced
Material Notes:	Characterization: Baydur 730 IBS is a rigid polyurethane structural foam system used in the reaction injection molding (RIM) process. Properties / Applications: Baydur 730 IBS is a rigid 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. The Baydur 730 IBS system was designed for general-purpose applications and is used in the construction, agricultural, consumer products, industrial and specialty automotive markets. The applications typically take advantage of the material ’s strength, as well as its excellent surface finish, large part capability and good flowability. As with any product, use of the Baydur 730 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	0.400 g/cc @Thickness 6.35 mm	ASTM D792
	0.400 g/cc @Thickness 12.7 mm	ASTM D792
Linear Mold Shrinkage	0.0070 - 0.0090 cm/cm @Thickness 6.35 mm
	0.0070 - 0.0090 cm/cm @Thickness 12.7 mm

Mechanical Properties	Original Value	Comments
Hardness, Shore D	50 @Thickness 6.35 mm	ASTM D2240
	75 @Thickness 12.7 mm	ASTM D2240
Tensile Strength at Break	8.27 MPa @Thickness 6.35 mm	ASTM D638
	23.4 MPa @Thickness 12.7 mm	ASTM D638
Elongation at Break	10 % @Thickness 6.35 mm	ASTM D638
	10 % @Thickness 12.7 mm	ASTM D638
Flexural Strength	13.8 MPa @Thickness 6.35 mm	ASTM D790
	48.3 MPa @Thickness 12.7 mm	ASTM D790
Flexural Modulus	400 MPa @Thickness 6.35 mm	ASTM D790
	1230 MPa @Thickness 12.7 mm	ASTM D790
Charpy Impact Unnotched	12.2 kJ/m² @Thickness 6.35 mm
	33.6 kJ/m² @Thickness 12.7 mm

Thermal Properties	Original Value	Comments
Deflection Temperature at 0.46 MPa (66 psi)	70.0 °C @Thickness 6.35 mm
	100 °C @Thickness 12.7 mm

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