Stator potting_MCOTI

CN | EN

Motor
The motor industry is developing in lightweight, high-efficiency, energy-saving, and miniaturization. Traditional mechanical fixing and welding processes have problems such as stress concentration, complex assembly, and poor sealing. MCOTI adhesives have the characteristics of filling gaps and balancing tension, and provide maximum strength and resistance to temperature, media, and impact, ensuring long-term stable operation and service life of motors under high-speed operation and complex working conditions.
Motor
Stator potting Magnetic steel bonding
Stator potting
Permanent magnet motors have problems such as high dependence on rare earths, difficulties in heat dissipation, insulation withstand voltage, and mass production yield control under high-speed operating conditions, and limited expansion of high-efficiency ranges in all operating conditions. MCOTI's high-reliability epoxy potting glue is used for motor stator potting, which can improve the performance of the rotor, stator and stator end faces, and has good impregnation capabilities, making it suitable for electronic stator applications.

The viscosity is <2500 mPa·s at 80℃, and the flat wire motor has excellent penetration in tiny gaps <0.3mm;

The thermal conductivity is 2.0 W/m·K, which efficiently dissipates motor heat and significantly reduces temperature rise;

It combines high Tg and low CTE to alleviate the difference in thermal expansion coefficient and eliminate the risk of cracking during hot and cold cycles;

Excellent high and low temperature impact resistance, oil resistance, moisture and heat resistance, etc., ensuring full cycle reliability.

Stator potting
Product advantages

Excellent electrical insulation ability to prevent corona and arcing

Effectively reduce hot spot temperature by 20-30℃ to ensure long-term stability

The motor can operate at lower temperatures and has better durability

Dramatically reduce vibration and noise

Better mechanical stability and structural strength

Product parameters
ClassificationcharacteristicMEP 4210MEP 4215MEP 4570
UncuredViscosity after mixing [mPa・s]
Brookfield LVDV
25℃/14#/20rpm: 73,00025℃/14#/10rpm: 75,00025℃/14#/20rpm: 35,916
60℃/14#/20rpm: 7,70060℃/14#/20rpm: 7,80060℃/14#/20rpm: 4,058
80℃/14#/20rpm: 3,20080℃/14#/20rpm: 3,40080℃/14#/20rpm: 2,199
Mixed density [g/cm³]2.592.612.73
Curing conditions2hr@100℃ + 3hr@150℃ + 1hr@180℃2hr@100℃ + 3hr@150℃ + 1hr@180℃2hr@100℃ + 3hr@150℃ + 1hr@180℃
After curinghardnessShore D97Shore D97Shore D92
Thermal conductivity [W/m・K]11.52
Tg [℃]158158173
CTE below Tg [ppm/K]181813
CTE above Tg [ppm/K]737365
Young's coefficient [GPa]5.35.75.2
Shear strength [MPa]131313
Tensile strength [MPa]181818
Volume resistivity [ohm-cm]> 1.0×1014> 1.0×1014> 1.0×1014
Insulation performance [kV/mm]>20>20>20
Operating temperature [℃]-40~200-40~200-40~200


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