Covestro Prism® CM-200 Polyurethane Solid RIM, MDI-based 2-Component Liquid System

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Covestro Prism® CM-200 Polyurethane Solid RIM, MDI-based 2-Component Liquid System
Categories:	Polymer; Thermoset; Polyurethane, TS; Thermoset Polyurethane, Solid RIM
Material Notes:	Characterization: Prism CM-200 solid polyurethane system is used in the reaction injection molding (RIM) process. Properties / Applications: Prism CM-200 solid polyurethane system incorporates an internal mold release (IMR) and is supplied as two reactive components: Component A is a polymeric diphenylmethane diisocyanate (MDI), and Component B is a polyol blend. The Prism CM-200 system has a UL94 flammability rating of V-0/5VA and is used for applications in the electronic, equipment housing and appliance markets. The applications typically take advantage of the material ’s strength, excellent surface finish, and large-part capability. As with any product, use of the Prism CM-200 system in a given application must be tested (including field testing, etc.) in advance by the user to determine suitability. 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	Original Value	Comments

Density	1.09 g/cc	ASTM D792
Linear Mold Shrinkage	0.0070 - 0.0090 cm/cm	Bayer Test

Mechanical Properties	Original Value	Comments
Hardness, Shore D	75	ASTM D2240
Tensile Strength, Ultimate	48.0 MPa	ASTM D638/D412
Elongation at Break	9.0 %	ASTM D638/D412
Flexural Yield Strength	76.0 MPa	at 5% strain; ASTM D790
Flexural Modulus	2.03 GPa	ASTM D790
Izod Impact, Unnotched	4.30 J/cm	ASTM D256

Electrical Properties	Original Value	Comments
Electrical Resistivity	5.20e+14 ohm-cm	ASTM D257
Surface Resistance	7.90e+14 ohm	ASTM D257
Dielectric Constant	3.07 @Frequency 1e+6 Hz	ASTM D150
Dielectric Strength	19.0 kV/mm	ASTM D149

Thermal Properties	Original Value	Comments
Deflection Temperature at 0.46 MPa (66 psi)	105 °C	ASTM D648
UL RTI, Electrical	85.0 °C @Thickness 6.35 mm	UL746B
	90.0 °C @Thickness 3.20 mm	UL746B
UL RTI, Mechanical with Impact	75.0 °C @Thickness 6.35 mm	UL746B
	80.0 °C @Thickness 3.20 mm	UL746B
UL RTI, Mechanical without Impact	85.0 °C @Thickness 6.35 mm	UL746B
	90.0 °C @Thickness 3.20 mm	UL746B
Flammability, UL94	5VA	UL94
	V-0 @Thickness 3.18 mm	UL94

Processing Properties	Original Value	Comments
Mold Temperature	65.0 - 75.0 °C

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 go back to viewing the property data in MatWeb's normal format.

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