Polytek Poly-Optic® 1420 Rigid Clear Polyurethane

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Polytek Poly-Optic® 1420 Rigid Clear Polyurethane
Categories:	Polymer; Thermoset; Polyurethane, TS
Material Notes:	A versatile, clear polyurethane. A matte finish will give a frosted appearance, and a higher gloss will increase its transparency.
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Physical Properties	Metric	English	Comments

Specific Gravity	1.05 g/cc	1.05 g/cc
Brookfield Viscosity	250 cP	250 cP	Mixed

Mechanical Properties	Metric	English	Comments
Hardness, Shore D	85	85
Tensile Strength	54.5 MPa	7900 psi	Post cured for 16 hours at 160°F
Elongation at Break	5.3 %	5.3 %	Post cured for 16 hours at 160°F
Modulus of Elasticity	1.182 GPa	171.5 ksi	Post cured for 16 hours at 160°F
Flexural Strength	86.9 MPa @Strain 5.0 %	12600 psi @Strain 5.0 %	Post cured for 16 hours at 160°F
Flexural Modulus	1.72 GPa	250 ksi	Post cured for 16 hours at 160°F

Thermal Properties	Metric	English	Comments
Deflection Temperature at 0.46 MPa (66 psi)	75.6 °C	168 °F	Post cured for 16 hours at 160°F

Processing Properties	Metric	English	Comments
Pot Life	15.0 min	15.0 min

Descriptive Properties
Color / Appearance	Water clear		Part A
	Water clear		Part B
Demold Time (hrs)	0.5		@ 175°F
	8		@ 150°F
Max Exotherm (°F)	311		1-lb mass
Mix Ratio by weight	2 to 1		Part A to Part B

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PPOLYT9911 / 287691

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