Motor Stator Thermally‑Conductive Potting Compound Selection | Recommended Grades for Robot Joint Motors and NEV Motors

When selecting potting compounds for motor stators, thermal conductivity alone should not be the only comparison indicator. Viscosity, wet‑out capability, Tg, coefficient of thermal expansion (CTE), cure shrinkage, hardness and crack‑resistance performance shall also be evaluated simultaneously. For conventional epoxy potting of motor stators, evaluate Elaplus EP 1715. Choose EP 1716 for applications requiring high Tg, low shrinkage and crack resistance. For high‑power‑density applications such as robot‑joint motors and new‑energy‑vehicle motors where higher thermal conductivity is needed, evaluate EP 1796‑2# with a thermal conductivity of approx. 2.5 W/m·K. Motor Potting Why Do Motor Stators Require Potting? Stator windings continuously generate heat when energized. As motors trend toward miniaturization, higher rotational speed and elevated power density, heat inside windings becomes harder to dissipate in a timely manner. Motor stator potting compounds mainly deliver the following functions: Robot‑joint frameless torque motors, servo motors and new‑energy‑vehicle drive motors feature high power density, which places higher comprehensive requirements on motor thermally‑conductive potting compounds. Recommended Grades for Conventional Motor Stator Potting EP 1715: Epoxy Potting Compound for Stators EP 1715 is a 100:15 two‑component heat‑curing epoxy potting compound, suitable for potting of general‑purpose motor stators and windings. Recommended Applications: Parameters of EP 1715 may vary for different suffixes or formula versions. Always refer to the latest corresponding TDS for public release. Grade Recommendation for Motors Requiring High Tg and Crack Resistance EP 1716: High‑Tg Low‑Shrinkage Epoxy Potting Compound EP 1716 is a 100:5 two‑component epoxy potting compound characterized by high Tg, high temperature resistance, low cure shrinkage and crack resistance. Its service temperature ranges from approx. ‑50 ℃ to 180 ℃. Suitable for: High Tg helps the material maintain mechanical stability at elevated operating temperatures. Low cure shrinkage and low CTE help reduce thermal stress among windings, iron cores and cured compound. High‑Thermal‑Conductivity Grade for Motor Stators EP…