Covestro Bayflex® XGT-15 Polyurethane System, Unfilled

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Covestro Bayflex® XGT-15 Polyurethane System, Unfilled
Categories:	Polymer; Thermoset; Polyurethane, TS; Thermoset Polyurethane, Solid RIM
Material Notes:	Characterization: Bayflex XGT-15 is an elastomeric polyurethane system used in the reaction injection molding (RIM) process. Properties / Applications: Bayflex XGT-15 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-15 system has a flexural modulus of 16,00 psi* at room temperature. It is used in applications requiring long shot times allowing large parts to be made on smaller equipment. The Bayflex XGT-15 system is suitable for use in glass encapsulation applications, or in applications requiring excellent impact properties, such as bus and truck bumpers or equipment housings. As with any product, use of the Bayflex XGT-15 system in a given application must be tested (including field testing, etc.) in advance by the user to determine suitability. Information provided by Covestro
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Physical Properties	Original Value	Comments

Specific Gravity	1.04 g/cc	Polyol (Component B)
	1.04 g/cc	ASTM D792
	1.21 g/cc	Isocyanate (Component A)
Viscosity	700 cP	Isocyanate (Component A)
	1200 cP	Polyol (Component B)
Linear Mold Shrinkage	0.0080 - 0.0090 cm/cm

Mechanical Properties	Original Value	Comments
Hardness, Shore A	94	ASTM D2240
Hardness, Shore D	45	ASTM D2240
Tensile Strength at Break	16.5 MPa	ASTM D412
Elongation at Break	250 %	ASTM D412
Flexural Modulus	110 MPa	ASTM D790
Tear Strength	450 pli	Die C; ASTM D624
Taber Abrasion, mg/1000 Cycles	200 @Load 1.00 kg	H-18 Wheel; ASTM D3489

Thermal Properties	Original Value	Comments
CTE, linear	78.0 µin/in-°F	ASTM D696
Flash Point	114 °C	Polyol (Component B)
	213 °C	Isocyanate (Component A)

Processing Properties	Original Value	Comments
Mold Temperature	60.0 - 70.0 °C

Descriptive Properties
Appearance	Colorless to pale yellow liquid	Polyol (Component B)
	Light yellow to yellow liquid	Isocyanate (Component A)

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PCOVEST0140 / 201923

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