Two-Part RTV Polyurethane Potting Compound for electronics SP2208

PROPERTY STANDARD/UNITS VALUE of SP2208 ---- ---- PART A PART B Appearance Visual inspection White/ Black fluid Transparent light yellow fluid Viscosity 25°C, cps 1,300±500 40±20 Density 25°C, g/cm3 0.98±0.02 1.2±0.03 Mixture ratio Mass ratio A:B=100: 66 Hardness Shore A 70 Water absorption 25°C, 15 days, % ＜0.15 Dielectric strength kV/mm, 25°C ＞20 Flame resistance UL 94 V-0 Volume resistance DC500V, ohm-cm 1.0×1015 Lose factor 50HZ 0.02 Working temperature °C -60~150