ER2221 Thermally Conductive Epoxy

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ER2221 resin has been formulated as high temperature resistant and thermally conductive potting compound which retains excellent characteristics throughout thermal cycling. ER2221 is coloured black, while ER2222 is a red version, otherwise the cured resins do not differ in their physical properties. Both exhibit excellent thermal resistance up to an operating temperature of 150°C and have an enhanced thermal conductivity value in comparison to other encapsulants of 1.20W/m.K.

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Approvals RoHS Compliant (2015/863/EU): Yes
UL Approval: UL94 V-0 File #E100107
Typical Properties
Liquid Properties: Base Material Epoxy
Density Part A – Resin (g/ml) 2.00
Density Part B – Hardener (g/ml) 1.01
Part A Viscosity (mPa s 23°C) 8000
Part B Viscosity (mPa s 23°C) 250
Mixed System Viscosity (mPa s 23°C) 6000
Mix Ratio (Weight) 13.91:1
Mix Ratio (Volume) 7:1
Usable Life (23°C) 60 mins
Gel Time (23°C) 6 hours
Cure Time (23 °C) 24 hours
Cure Time (60 °C) 2 hours
Cure Time (100 °C) 1 hour
Colour Part A – Resin Black
Colour Part B – Hardener Brown
Storage Conditions Dry Conditions: Above 15ºC, Below 35ºC
Shelf Life 12 months
Shrinkage < 1%

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