Epoxies, Etc 50-2369 FR Flame Retardant Thermally Conductive Polyurethane

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Epoxies, Etc 50-2369 FR Flame Retardant Thermally Conductive Polyurethane
Categories:	Polymer; Thermoset; Polyurethane, TS
Material Notes:	Description: The 50-2369FR Potting and Encapsulating Compound has been formulated to meet the stringent non-burning requirements of UL94 V-0. 50-2369 FR Urethane is listed with Underwriter’s Laboratory for passing UL94 V-0. This system offers excellent heat transfer, low exotherm, and excellent electrical properties. This system is a good choice for potting applications containing surface mount components or any application requiring low stress, thermal conductivity and flame retardancy. 50-2369 FR is suitable for outdoor use. Features: Low viscosity Low stress on sensitive components Excellent electrical insulation Excellent water resistance Low shrinkage Thermal shock resistance Thermally conductive Flame retardant (UL 94 V-0 Listed) Information provided by Epoxies, Etc
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Physical Properties	Original Value	Comments

Specific Gravity	1.21 g/cc	Isocyanate
	1.57 g/cc	Polyol
Water Absorption	0.074 % @Time 86400 sec
	0.18 % @Time 605000 sec
Viscosity	150 cP	Isocyanate
	15000 cP	Polyol
Storage Temperature	18.0 - 29.0 °C

Mechanical Properties	Original Value	Comments
Hardness, Shore D	75
Tensile Strength	3500 psi
Elongation at Break	20 %

Electrical Properties	Original Value	Comments
Volume Resistivity	2.10e+14 ohm-cm
Surface Resistance	6.00e+17 ohm
Dielectric Constant	4.3 @Frequency 100 Hz
Dielectric Strength	540 V/mil

Thermal Properties	Original Value	Comments
CTE, linear	162 µm/m-°C
Thermal Conductivity	1.15 W/m-K
Maximum Service Temperature, Air	135 °C
Minimum Service Temperature, Air	-65.0 °C
Shrinkage	0.20 %

Processing Properties	Original Value	Comments
Cure Time	24.0 hour @Temperature 25.0 °C
	30.0 - 45.0 min @Temperature 60.0 °C
Shelf Life	12.0 Month

Descriptive Properties
Color	Dark Gray

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PFEPOX046 / 316723

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