Epoxies, Etc 70-3812 NC High Thermal Transfer Epoxy

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Epoxies, Etc 70-3812 NC High Thermal Transfer Epoxy
Categories:	Polymer; Thermoset; Epoxy
Material Notes:	Description: 70-3812 NC is a two component, aluminum filled epoxy system. This system is used for making heat resistant tools, parts, or bonds that require the highest thermal conductivity and heat resistance. We have developed this extremely conductive epoxy by formulating it with a unique combination of fillers, particle sizes and dispersion techniques. 70-3812 NC has good heat dissipation making this a popular choice for a variety of heat sink applications. Common heat sink bonding applications include fin to base, folded-fin set to base, pin-fin set to base, and cold plate tube to extruded base. The 70-3812RNC is formulated with high performance materials and additives that give heat sink manufacturers improved adhesion and processing advantages. 70-3812 NC passes NASA’s outgassing requirements per ASTM E-595-07. Features: Excellent Thermal Conductivity Superior Adhesion Low Viscosity allows quick self leveling Information provided by Epoxies, Etc
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Physical Properties	Original Value	Comments

Specific Gravity	1.81 g/cc
Viscosity	8000 cP	Mixed
	130000 cP	Resin
Outgassing - Total Mass Loss	0.070 %	CVCM
	0.91 %

Mechanical Properties	Original Value	Comments
Hardness, Shore D	65 @Temperature 100 °C
	90 @Temperature 25.0 °C
Tensile Strength	2500 psi	Aluminum to Aluminum 1” overlap
Compressive Strength	18500 psi

Thermal Properties	Original Value	Comments
CTE, linear	28.0 µm/m-°C
Thermal Conductivity	4.50 W/m-K
Maximum Service Temperature, Air	155 °C
Minimum Service Temperature, Air	-55.0 °C

Processing Properties	Original Value	Comments
Cure Time	15.0 - 20.0 min @Temperature 125 °C
	24.0 hour @Temperature 25.0 °C
	45.0 min @Temperature 65.0 °C

Descriptive Properties
Color	Grey
Mix Ratio	100:10	by weight
Working Time	100 g

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PFEPOX063 / 316740

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