Resinlab® EP1285HD-10 Highly Filled, Medium Viscosity Casting Resin

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Resinlab® EP1285HD-10 Highly Filled, Medium Viscosity Casting Resin
Categories:	Polymer; Thermoset; Epoxy; Epoxy Cure Resin; Epoxy, Cast, Metal Filled
Material Notes:	Resinlab™ EP1285 (Formerly Lab Product W021901 series) is a highly filled, medium viscosity black casting resin designed for applications requiring a high degree of thermal conductivity and a low CTE combined with a moderate free flowing viscosity. They give excellent resistance to acids, bases, water, and most organic compounds. The high filler content also enhances resistance to thermal cycle stresses. The choice of hardener allows the user to choose a variety of reactivity’s, viscosities, thermal ranges and environmental resistance capabilities. The resin contains a high loading of abrasive aluminum oxide filler, which can introduce wear considerations for wetted components of meter-mix and dispensing equipment. Warming the assembly prior to filling will aid in flow and air release. Additional vacuum degassing may be desired for some applications. Information Provided by Resinlab L.L.C., an Ellsworth Adhesives Company.
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Physical Properties	Original Value	Comments

Specific Gravity	2.00 g/cc
Water Absorption	0.050 % @Time 86400 sec	TM R050-35
Viscosity	3000 cP	Mixed, RVT, #6, 2.5 rpm; TM R050-12
Linear Mold Shrinkage	0.0010 cm/cm

Mechanical Properties	Original Value	Comments
Hardness, Shore D	95	TM R050-19
Tensile Strength at Break	4800 psi	TM R050-36
Tensile Strength, Ultimate	4800 psi	TM R050-36
Tensile Strength, Yield	3000 psi	TM R050-36
Elongation at Break	0.00 - 1.0 %	TM R050-36
Tensile Modulus	800 ksi	TM R050-36
Compressive Yield Strength	9000 psi	TM R050-38
Compressive Strength	12000 psi	Break; TM R050-38
	13000 psi	Ultimate; TM R050-38
Compressive Modulus	650 ksi	TM R050-38
Adhesive Bond Strength	1000 psi	Lap shear; 2024 T3 Al Abraded / MEK Wipe

Electrical Properties	Original Value	Comments
Volume Resistivity	>= 1.00e+15 ohm-cm
Dielectric Constant	4.9
Dielectric Strength	400 V/mil

Thermal Properties	Original Value	Comments
CTE, linear	40.0 µm/m-°C @Temperature <=103 °C	below Tg
	110 µm/m-°C @Temperature >=103 °C	above Tg
Thermal Conductivity	1.15 W/m-K
Maximum Service Temperature, Air	180 °C
Minimum Service Temperature, Air	-20.0 °C
Glass Transition Temp, Tg	103 °C	TM R050-25

Processing Properties	Original Value	Comments
Cure Time	1.00 hour @Temperature 100 °C	plus 2 hrs at 125°C
Pot Life	480 - 720 min	Mass: 100g; TM R050-17

Descriptive Properties
Color	Black
Mix Ratio	2.5:1	Volume
	4.76:1	Weight

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PRESL121 / 101535

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