Covestro Bayflex® MP-10000 Polyurethane Elastomeric RIM, MDI-based 2-Component Liquid System

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Covestro Bayflex® MP-10000 Polyurethane Elastomeric RIM, MDI-based 2-Component Liquid System
Categories:	Polymer; Thermoset; Polyurethane, TS; Thermoset Polyurethane, Elastomer, Unreinforced; Rubber or Thermoset Elastomer (TSE)
Material Notes:	Bayflex MP-10,000 is a solid elastomer which has a flexural modulus of approximately 10,000 psi (69 MPa) at room temperature. Bayflex MP-10,000 is a solid elastomer which has a flexural modulus of approximately 10,000 psi (69 MPa) at room temperature. It is processed on reaction injection molding (RIM) equipment and is used for rollers, gaskets, and encapsulated windows. This system combines rapid demold times, excellent integrity at demold, improved release characteristics, and outstanding physical properties. Bayflex MP-10,000 is a formulated RIM system supplied as two liquid components. Component A is a diphenylmethane diisocyanate (MDI) prepolymer, and Component B is a polyether polyol. As of 1 September 2015, Bayer MaterialScience was separated from Bayer AG and officially adopted its new name – Covestro.
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Physical Properties	Metric	English	Comments

Specific Gravity	1.03 g/cc	1.03 g/cc	Polyol (Component B)
	1.21 g/cc	1.21 g/cc	Isocyanate (Component A)
Density	1.10 g/cc	0.0397 lb/in³	ASTM D792
Water Absorption	3.3 %	3.3 %	24 hours; Bayer Test
Water Absorption at Saturation	5.0 %	5.0 %	240 hours; Bayer Test
Viscosity	700 cP	700 cP	Isocyanate (Component A)
	1350 cP	1350 cP	Polyol (Component B)
Thickness	3000 microns	118 mil
Linear Mold Shrinkage	0.0142 cm/cm	0.0142 in/in	Bayer Test

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	90	90	ASTM D2240
Hardness, Shore D	40	40	ASTM D2240
Tensile Strength, Ultimate	15.0 MPa	2180 psi	ASTM D638/D412
Elongation at Break	300 %	300 %	ASTM D638/D412
50% Modulus	6.89 MPa @Strain 50 %	6.89 MPa @Strain 50 %	20 in/min, Die C; ASTM D412
100% Modulus	5.17 MPa @Strain 100 %	750 psi @Strain 100 %	20 in/min, Die C; ASTM D412
Flexural Modulus	0.0700 GPa	10.2 ksi	ASTM D790
	0.0540 GPa @Temperature 65.0 °C	7.83 ksi @Temperature 149 °F	ASTM D790
	0.0690 GPa @Temperature 23.0 °C	10.0 ksi @Temperature 73.4 °F	ASTM D790
	0.163 GPa @Temperature -30.0 °C	23.6 ksi @Temperature -22.0 °F	ASTM D790
Tear Strength	40.0 kN/m	228 pli	Die C; ASTM D624

Thermal Properties	Metric	English	Comments
CTE, linear	95.0 µm/m-°C @Temperature 20.0 °C	52.8 µin/in-°F @Temperature 68.0 °F	ASTM D696
Flash Point	185 °C	365 °F	Polyol (Component B)
	213 °C	415 °F	Isocyanate (Component A)

Processing Properties	Metric	English	Comments
Mold Temperature	65.0 - 70.0 °C	149 - 158 °F

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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PB2B83 / 26625

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