Covestro Bayflex® XGT-16 Polyurethane Elastomeric RIM, MDI-based 2-Component Liquid System

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Covestro Bayflex® XGT-16 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-16 Clear is an elastomeric polyurethane system used in the reaction injection molding (RIM) process. Properties / Applications: Bayflex XGT-16 Clear is an elastomeric polyurethane system used in the reaction injection molding (RIM) process. The formulated system is supplied as two liquid components: Component A is a diphenylmethane diisocyanate (MDI) prepolymer, and Component B is a polyether polyol system. Bayflex XGT-16 Clear system has a flexural modulus of 16,00 psi* at room temperature. It is used in applications requiring excellent impact properties, such as bumpers for buses and other vehicles. As with any product, use of the Bayflex XGT-16 Clear 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	Metric	English	Comments

Specific Gravity	1.04 g/cc	1.04 g/cc	Polyol (Component B)
	1.21 g/cc	1.21 g/cc	Isocyanate (Component A)
Density	1.04 g/cc	0.0376 lb/in³	ASTM D792
Viscosity	600 cP	600 cP	Polyol (Component B)
	700 cP	700 cP	Isocyanate (Component A)
Thickness	3180 microns	125 mil
Linear Mold Shrinkage	0.0080 - 0.0090 cm/cm	0.0080 - 0.0090 in/in	Bayer Test

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	94	94	ASTM D2240
Hardness, Shore D	45	45	ASTM D2240
Tensile Strength, Ultimate	17.0 MPa	2470 psi	ASTM D412
Elongation at Break	250 %	250 %	ASTM D412
Flexural Modulus	0.110 GPa	16.0 ksi	ASTM D790
Tear Strength	80.0 kN/m	456 pli	Die C; ASTM D624
Taber Abrasion, mg/1000 Cycles	200	200	H-18 wheel, 1000 g Load; ASTM D3489

Thermal Properties	Metric	English	Comments
CTE, linear	140 µm/m-°C @Temperature 20.0 °C	77.8 µin/in-°F @Temperature 68.0 °F	ASTM D696
Flash Point	114 °C	237 °F	Polyol (Component B)
	213 °C	415 °F	Isocyanate (Component A)

Processing Properties	Metric	English	Comments
Mold Temperature	60.0 - 70.0 °C	140 - 158 °F
Cure Time	2.00 - 3.00 min	0.0333 - 0.0500 hour

Descriptive Properties
Appearance	Light yellow to yellow liquid		Isocyanate (Component A)
	Yellow or blue-green to amber liquid		Polyol (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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Natural Rubber, Not Vulcanized (NR, IR, Polyisoprene)

PB2B89 / 26631

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