Epoxies, Etc 50-2151 FR Polyurethane Thermally Conductive Potting & Encapsulating Compound

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Epoxies, Etc 50-2151 FR Polyurethane Thermally Conductive Potting & Encapsulating Compound
Categories:	Polymer; Thermoset; Polyurethane, TS
Material Notes:	Description: 50-2151 FR is a high performance thermally conductive two component urethane system. This easy to use polyurethane is low in viscosity and ideal for potting or encapsulating delicate electronic components. 50-2151 FR exhibits very low shrinkage, stress, and exotherm throughout the cure cycle. This system is also well known for its outstanding thermal shock and excellent dielectric properties. 50-2151 FR is formulated to be flame retardant. It is a good choice when heat transfer and electrical insulation properties are required. Features: Does not contain MOCA or TDI Low viscosity Very good thermal shock and vibration resistance Benefits: Low stress on components Easy to handle Low shrinkage Information provided by Epoxies, Etc
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Physical Properties	Metric	English	Comments

Specific Gravity	1.23 g/cc	1.23 g/cc	Isocyanate
	1.66 g/cc	1.66 g/cc	Polyol
Viscosity	200 cP	200 cP	Isocyanate
	10000 cP	10000 cP	Mixed
	30000 cP	30000 cP	Polyol
Storage Temperature	18.0 - 27.0 °C	64.4 - 80.6 °F

Mechanical Properties	Metric	English	Comments
Hardness, Shore D	40 @Temperature 100 °C	40 @Temperature 212 °F
	50 @Temperature 25.0 °C	50 @Temperature 77.0 °F
	50 @Temperature 60.0 °C	50 @Temperature 140 °F
Tensile Strength	7.067 MPa	1025 psi
Elongation at Break	30 %	30 %

Electrical Properties	Metric	English	Comments
Volume Resistivity	6.80e+13 ohm-cm	6.80e+13 ohm-cm
Surface Resistance	1.80e+17 ohm	1.80e+17 ohm
Dielectric Constant	4.0 @Frequency 100 Hz	4.0 @Frequency 100 Hz
Dielectric Strength	21.3 kV/mm	540 kV/in
Dissipation Factor	0.18 @Frequency 100 Hz	0.18 @Frequency 100 Hz

Thermal Properties	Metric	English	Comments
Thermal Conductivity	1.15 W/m-K	7.98 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air	130 °C	266 °F
Minimum Service Temperature, Air	-55.0 °C	-67.0 °F
Shrinkage	<= 1.0 %	<= 1.0 %

Processing Properties	Metric	English	Comments
Cure Time	40.0 min @Temperature 85.0 °C	0.667 hour @Temperature 185 °F
	90.0 min @Temperature 65.0 °C	1.50 hour @Temperature 149 °F
	150 min @Temperature 45.0 °C	2.50 hour @Temperature 113 °F
	1440 min @Temperature 25.0 °C	24.0 hour @Temperature 77.0 °F
Pot Life	70.0 min @Load 0.100 kg	70.0 min @Load 0.221 lb

Descriptive Properties
Color	Tan
Mix Ratio	100:12		By weight (Polyol, Isocyanate)
	100:16		By volume (Polyol, Isocyanate)

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.

PFEPOX044 / 316721

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