How to Select Potting Compounds for Motors, Connectors and Temperature Sensors? ELAPLUS EP 1796 Heat-Curable Epoxy Potting Compound Solution

For applications including motor stators, connectors, temperature sensors, pressure sensors, power modules, industrial control modules and reactors, potting compounds not only serve as filling and protection materials, but also directly determine electrical insulation reliability, high-low temperature resistance stability, crack resistance and long-term service life of finished products. Especially in scenarios with severe high-low temperature cycling, long-term high-temperature exposure, strict electrical insulation requirements and high dimensional stability, conventional potting materials tend to suffer from cracking, shrinkage, debonding, insulation degradation and bubble residue. To meet such high-reliability potting demands, ELAPLUS recommends EP 1796 A/B heat-curable potting compound. It is a two-component solvent-free heat-curable epoxy potting material featuring excellent processability and adjustable mixing ratio. With superior high-low temperature aging resistance, it is suitable for potting reactors, connectors, pressure sensors, temperature sensors, industrial control modules and motor stators. I. Why High–Reliability Potting Compounds Are Required for These Applications 1. Motor Stator Potting: Simultaneous Exposure to High Temperature, Vibration and Thermal Stress Motor stators continuously generate heat during operation, while windings, iron cores and housings feature different thermal expansion behaviors. Excessively high linear thermal expansion coefficient or large curing shrinkage of potting compounds may cause cracking, coil loosening and insulation degradation. Therefore, motor potting compounds shall have: ■ High-low temperature shock resistance ■ Low linear thermal expansion coefficient ■ Excellent electrical insulation ■ High hardness and good toughness ■ Long-term heat resistance EP 1796 features low linear thermal expansion coefficient, low curing shrinkage, high hardness and good toughness, making it ideal for potting protection of motor stators, coils and high-temperature electrical structures. 2. Connector Potting: Insulation, Moisture Resistance and Dimensional Stability Are Critical Connectors operate under continuous electrical connection, with internal pins, terminals, solder joints and wire harness joints requiring strict insulation and sealing. Large shrinkage of potting compounds may cause stress concentration around terminals; insufficient temperature resistance may lead…