Page 1 ER2074 Epoxy Resin ER2074 is a flame retardant, thermally conductive, two part potting and encapsulating compound. The flame retardant technology used is of a clean type leading to relatively low toxicity fumes and low smoke emission. High thermal conductivity ideal for heat dissipation within LED applications Good environmental protection water and chemical resistance Does not contain abrasive fillers low wear on dispensing machinery Meets UL94 V-0 approval high level of flame retardancy Approvals RoHS-2 Compliant (2011/65/EU): Yes UL Approval: Meets UL94 V-0 Typical Properties Liquid Properties: Base Material Epoxy Density Part A - Resin (g/ml) 2.25 Density Part B - Hardener (g/ml) 0.94 Part A Viscosity (mPa s 23C) 200000 Part B Viscosity (mPa s 23C) 58 Mixed System Viscosity (mPa s 23C) 16700 Mix Ratio (Weight) 17.31:1 Mix Ratio (Volume) 7.23:1 Usable Life (20C) 90 mins Gel Time (23C) 5 hours Cure Time (23 C) 24 hours Cure Time (60 C) 4 hours Cure Time (100 C) 1 hour Colour Part A - Resin White Colour Part B - Hardener Clear Storage Conditions Dry Conditions: Above 15C, Below 30C Shelf Life 24 Months (bulk) 18 months (resin pack) Exotherm < 35C (Measured on 100ml sample in a cylinder of diameter 49.4mm 23C) Shrinkage < 1% Page 2 Cured System: Thermal Conductivity (W/m.K) 1.26 Cured Density (g/ml) 2.09 Temperature Range (C) -40 to +130 Max Temperature Range (Short Term (C)/30 Mins) +150 (Application and Geometry Dependent) Dielectric Strength (kV/mm) 10 15 Volume Resistivity (ohm-cm) 10 Shore Hardness D80 Colour (Mixed System) White Flame Retardancy Meets UL94 V-0 Tensile Strength (MPa) 82 Compressive Strength (MPa) 120 Deflection Temperature (C) 60 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 0.3% 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