Thermoset ES-121 Epoxy Encapsulant Where to Buy
LORD Thermoset ES-121 epoxy encapsulant is a black, two-component system designed specifically for high voltage, automotive ignition coils, where excellent adhesion to segmented bobbins is critical.
Shelf life of Thermoset ES-121 resin and Thermoset ES-121 hardener is one year from date of manufacture when stored at 25°C in original, unopened container.
Features and Benefits
Low Viscosity – maintains low viscosity for complete and void-free encapsulation.
Environmentally Resistant – provides excellent resistance to thermal shock.
High Temperature Electrical Performance – developed specifically for electrical stability at high temperature.
Uncured Typical Properties*
|Mixed Appearance||Black, Thick Liquid|
|Mixed Viscosity, cps @ 25°C||8000|
|Mixed Specific Gravity||1.63|
|Gel Time, min @ 100°C||70|
|Working Life, day @ 25°C||1|
|Cure Time||2 hr @ 90°C, plus 2 hr @ 110°C, plus 2 hr @ 140°C|
Cured Typical Properties*
|Volume Resistivity, ohm-cm @ 25°C||>1 x 1014|
|Coefficient of Linear Thermal Expansion, ppm/°C||
alpha 1 = 40 x 10-6
alpha 2 = 129 x 10-6
|Glass Transition Temperature (Tg), °C||145|
|Hardness, Shore D||90|
|Storage Modulus, GPa||2|
|Dielectric Strength, kV/mm||30|
|Dielectric Constant, @ 25°C||< 4|
|Dissipation Factor, % @ 25°C||< 0.5|
*Data is typical and not to be used for specification purposes.