ER2221RP250G

Page 1 ER2221 Epoxy Resin ER2221 is a high temperature resistant, thermally conductive, two-part encapsulation compound based on epoxy technology. Designed to meet increasing demands for efficient thermal dissipation, ER2221 combines ease of processing with an enhanced thermal conductivity when compared to traditional thermally conductive encapsulants. It also offers enhanced performance in high temperature applications as well as those subject to thermal cycling. Excellent high temperature resistance suitable for operating environments up to 150C Enhanced thermal conductivity ideal for heat dissipation within a variety of applications Moderate viscosity for a filled system provides thermal dissipation for units with limited spacing Does not contain abrasive fillers low wear on dispensing machinery Approvals RoHS-2 Compliant (2011/65/EU): Yes UL Approval: UL94 V-0 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 23C) 8000 Part B Viscosity (mPa s 23C) 250 Mixed System Viscosity (mPa s 23C) 6000 Mix Ratio (Weight) 13.91:1 Mix Ratio (Volume) 7:1 Usable Life (23C) 60 mins Gel Time (23C) 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 15C, Below 30C Shelf Life 24 Months (bulk) 12 months (resin pack) Shrinkage < 1% Page 2 Cured System: Thermal Conductivity (W/m.K) 1.20 Cured Density (g/ml) 1.88 Temperature Range (C) -40 to +150 Max Temperature Range (Short Term (C)/30 Mins) +170 (Application and Geometry Dependent) Relative Thermal Index (C) +130 Dielectric Strength (kV/mm) 10 10 Volume Resistivity (ohm-cm) 10 Shore Hardness D90 Colour (Mixed System) Black Flame Retardancy Meets UL94 V-0 Tensile Strength (MPa) 50 Compressive Strength (MPa) 120 Coefficient of Expansion (ppm/C) 30 Loss Tangent 50 Hz 0.05 Permittivity 50 Hz 6.00 Comparative Tracking Index >850 Volts Water Absorption (9.7mm thick disk, 51mm diameter) < 0.5% / < 1% 10 days 20C / 1 hour 100C Elongation At Break 6.5% Mixing Procedures Resin Packs When in Resin pack form, the resin and hardener are mixed by removing the clip and moving the contents around inside the pack until thoroughly mixed. To remove the clip, remove both end caps, grip each end of the pack and pull apart gently. By using the removed clip, take special care to push unmixed material from the corners of the pack. Mixing normally takes from two to four minutes depending on the skill of the operator and the size of the pack. Both the resin and hardener are evacuated prior to packing so the system is ready for use immediately after mixing. The corner may be cut from the pack so that it may be used as a simple dispenser. 1 3 2 4 5 6