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	Original Value	Comments

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

Mechanical Properties	Original Value	Comments
Hardness, Shore D	40 @Temperature 100 °C
	50 @Temperature 25.0 °C
	50 @Temperature 60.0 °C
Tensile Strength	1025 psi
Elongation at Break	30 %

Electrical Properties	Original Value	Comments
Volume Resistivity	6.80e+13 ohm-cm
Surface Resistance	1.80e+17 ohm
Dielectric Constant	4.0 @Frequency 100 Hz
Dielectric Strength	540 V/mil
Dissipation Factor	0.18 @Frequency 100 Hz

Thermal Properties	Original Value	Comments
Thermal Conductivity	1.15 W/m-K
Maximum Service Temperature, Air	130 °C
Minimum Service Temperature, Air	-55.0 °C
Shrinkage	<= 1.0 %

Processing Properties	Original Value	Comments
Cure Time	1.50 hour @Temperature 65.0 °C
	2.50 hour @Temperature 45.0 °C
	24.0 hour @Temperature 25.0 °C
	40.0 min @Temperature 85.0 °C
Pot Life	70.0 min @Load 0.100 kg

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

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PFEPOX044 / 316721

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