CoolTherm® EP-340/70 Epoxy System Where to Buy
Product Information
LORD CoolTherm® EP-340/70 epoxy system is a two-component system designed to provide maximum thermal conductivity and outstanding mechanical properties. CoolTherm EP-340/70 system offers a very low coefficient of thermal expansion and is appropriate for applications where the expansion and contraction of an epoxy encapsulation system must be maintained.
Handling and cured properties of the two-component epoxy system are dependent on the hardener used with CoolTherm EP-340 epoxy resin.
Shelf Life
Shelf life of CoolTherm EP-340 resin is six months from date of manufacture when stored at 25°C in original, unopened container. The material must be periodically rotated within its container to minimize settling.
Shelf life of Thermoset Hardener No. 70 is two years from date of manufacture when stored at 25°C in original, unopened container.
Features and Benefits
Low Viscosity – provides low viscosity and surface tension, enabling void-free casting without a vacuum step.
Convenient – provides a working life of over one hour; appropriate for cured system that experiences operating temperature of 130°C or below.
UL Rated – cured system is UL 94 HB certified.
Typical Properties*
| Mixed Viscosity, cps @ 25°C | 10,000 |
| Working Life, min @ 25°C | 100 |
| Cure Time, hr @ 25°C | 24 |
Cured Typical Properties*
| Volume Resistivity, ohm-cm @ 25°C | 6 x 1015 |
| Thermal Conductivity, W/mK | 1.4 |
| Coefficient of Linear Thermal Expansion, ppm/°C | 31 |
| Hardness, Shore D | 90 |
| Tensile Strength, psi @ 25°C | 9400 |
| Elongation at Break, % | 4.1 |
|
Moisture Absorption, % 24 hours @ 25°C |
0.17 |
| Dielectric Strength, V/mil | 430 |
| Dielectric Constant | 3.4 |
| Dissipation Factor | 0.034 |
*Data is typical and not to be used for specification purposes.
Literature
| Download | Type | Name | |
|---|---|---|---|
| Technical Data Sheet | CoolTherm EP-340 Epoxy Resin | |
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| Safety Data Sheet | CoolTherm EP-340 Resin | |
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| Technical Data Sheet | Thermoset Hardener No. 70 | |
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| Safety Data Sheet | THERMOSET HARDENER NO. 70 | |
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Product Catalog | Potting & Encapsulation Materials |