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Ensinger PEI

Covestro Bayflex® XGT-140 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: Characterization: Bayflex XGT-140 is an elastomeric polyurethane system used in the reaction injection molding (RIM) process.

Properties / Applications: Bayflex XGT-140 is an elastomeric polyurethane system used in the reaction injection molding (RIM) process. The system is supplied as two liquid components: Component A is a modified diphenylmethane diisocyanate (MDI), and Component B is a polyether polyol system. The extended gel time of Bayflex XGT-140 system gives equipment designers the flexibility to create large, complex parts that can be molded on existing injection machinery. The resin ’s excellent surface quality and high impact resistance make it a candidate for agricultural equipment, heavy-duty trucks, specialty transportation, and marine applications. As with any product, use of the Bayflex XGT-140 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 PropertiesMetricEnglishComments
Specific Gravity 1.04 g/cc1.04 g/ccPolyol (Component B)
 1.21 g/cc1.21 g/ccIsocyanate (Component A)
Density 1.04 g/cc0.0376 lb/in³ASTM D792
Viscosity 550 cP550 cPPolyol (Component B)
 700 cP700 cPIsocyanate (Component A)
Thickness 3180 microns125 mil
Linear Mold Shrinkage 0.0085 cm/cm0.0085 in/inBayer Test
 
Mechanical PropertiesMetricEnglishComments
Hardness, Shore D 7171ASTM D2240
Tensile Strength, Ultimate 29.0 MPa4210 psiASTM D412
Elongation at Break 80 %80 %ASTM D412
Flexural Modulus  0.345 GPa
@Temperature 65.0 °C
50.0 ksi
@Temperature 149 °F
ASTM D790
 0.965 GPa
@Temperature 23.0 °C
140 ksi
@Temperature 73.4 °F
ASTM D790
 1.79 GPa
@Temperature -30.0 °C
260 ksi
@Temperature -22.0 °F
ASTM D790
Izod Impact, Notched 2.40 J/cm4.50 ft-lb/inASTM D256
Tear Strength 120 kN/m685 pliDie C; ASTM D624
 
Thermal PropertiesMetricEnglishComments
CTE, linear 110 µm/m-°C
@Temperature 20.0 °C
61.1 µin/in-°F
@Temperature 68.0 °F
ASTM D696
Deflection Temperature at 0.46 MPa (66 psi) 55.0 °C131 °FASTM D648
Flash Point 110 °C230 °FPolyol (Component B)
 213 °C415 °FIsocyanate (Component A)
 
Processing PropertiesMetricEnglishComments
Mold Temperature 60.0 - 70.0 °C140 - 158 °F
 
Descriptive Properties
AppearanceLight yellow to yellow liquidIsocyanate (Component A)
 Viscous liquidPolyol (Component B)

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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