2-component polyurethane casting resin 8503 + PU hardener 8901
Solvent-free and electrically insulating, very high thermal conductivity, no metallic fillers, excellent adhesion properties, free of halogenated flame retardants. Ideal for cooling windings, electric motors, accumulators, and high-performance components. For creating effective heat sink design variations and easily combinable with Kisling's LED potting compounds.
Chemical basis: Polyurethane
Color: Natural (beige)
Density: 2.20 – 2.30 g/cm3
Mixing ratio: 100 : 8 (W:W)
Viscosity: 8500 – 12500 mPas
Pot life: min. 25 – 35
Shore hardness (DIN EN ISO 868): D50 – 60
Operating temperature range: -50 to +160 °C
Curing conditions: Cold curing
Thermal conductivity: 1.5 W/mK
Glass transition temperature: 10 °C
CTE < Tg: 72.5 ppm/K
CTE > Tg: 141.7 ppm/K
UL94: V0, 4.0 mm