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CoolTherm™ EP-2000 Thermally Conductive Epoxy Encapsulant

Product Information

LORD CoolTherm™ EP-2000 encapsulant is a two-component, low viscosity epoxy system designed for encapsulation of motor stators, transformer coils, and other devices with small-diameter, tightly-packed windings. CoolTherm EP-2000 encapsulant provides high-temperature stability combined with excellent electrical insulation.

Shelf Life

Shelf life of each component is six months from date of manufacture when stored at 25°C in original, unopened container. CoolTherm EP-2000 resin must be periodically rotated within its container to maintain maximum shelf life. Settling will occur if not mixed.

Features and Benefits

Excellent Heat Dissipation – provides lower motor end winding temperatures during high-power operation.

Low Viscosity – provides fine-particle filler and low viscosity; self-levels to fill voids in motor stators/rotors, transformer coils and other electrical devices.

Durable– cured material resists cracking during multiple thermal cycles from sub-zero temperatures to 200°C.

Uncured Typical Properties*

Mixed Appearance Gray Liquid
Mixed Viscosity, cps @ 60°C
Shear rate 10/s
Mixed Specific Gravity, @ 25°C 2.72
Gel Time, min @ 110°C 64
Working Life, hr @ 60°C >3

Cured Typical Properties*

Volume Resistivity, ohm-cm @ 25°C 1 x 1014
Thermal Conductivity, W/mK 1.9
Coefficient of Linear Thermal Expansion, ppm/°C 14.9
Glass Transition Temperature (Tg), °C 204
Hardness, Shore D 85
Young's Modulus, GPa 17.5
Dielectric Strength, V/mil 470

* Data is typical and not to be used for specification purposes.
Cure schedule of 2 hours each at 120°C, 150°C, 180°C and 210°C.


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Download Technical Data Sheet CoolTherm EP-2000 Thermally Conductive Epoxy Encapsulant