Covestro Bayflex® 962 Polyether-based Polyurethane System, Density 34 pcf

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Covestro Bayflex® 962 Polyether-based Polyurethane System, Density 34 pcf
Categories:	Polymer; Thermoset; Polyurethane, TS
Material Notes:	Characterization: Bayflex 963 is a fully compounded polyether-based polyurethane system consisting of two liquid components which can be water-blown. Properties / Applications: Bayflex 963 is a fully compounded polyether-based polyurethane system consisting of two liquid components which can be water-blown. Component A is a modified diphenylmethane diisocyanate (MDI) prepolymer, and Component B is a polyether polyol system. The Bayflex 963 system is used in the manufacture of microcellular polyurethane innersoles. The innersoles prepared from these components combine light weight, comfort, and durability. Processibility and dynamic flexural properties are excellent and have made the Bayflex 963 system a prime innersole material. As with any product, use of the Bayflex 963 system in a given application must be tested (including but not limited to field testing) in advance by the user to determine suitability. Information provided by Covestro
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Physical Properties	Original Value	Comments

Specific Gravity	0.300 g/cc	Molded
	1.06 g/cc	Polyol (Component B)
	1.20 g/cc	Isocyanate (Component A)
Viscosity	1100 cP	Isocyanate (Component A)
	1100 cP	Polyol (Component B)

Mechanical Properties	Original Value	Comments
Hardness, Shore OO	60	ASTM D2240
Tensile Strength at Break	2.07 MPa	ASTM D412
Elongation at Break	500 %	ASTM D412
Compressive Strength	0.0517 MPa @Strain 25 %	ASTM D575
	0.138 MPa @Strain 50 %	ASTM D575
Tear Strength	8.00 pli	Black
Compression Set	4.0 % @Temperature 25.0 °C, Time 79200 sec	ASTM D395

Thermal Properties	Original Value	Comments
Flash Point	126 °C	Polyol (Component B)
	207 °C	Isocyanate (Component A)

Processing Properties	Original Value	Comments
Mold Temperature	43.0 - 49.0 °C
Moisture Content	<= 0.83 %	Polyol (Component B)

Descriptive Properties
Content	18.7-19.1%	NCO, Isocyanate (Component A)
Hydroxyl number	Polyol (Component B)

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PCOVEST0131 / 201914

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