Thermal conductive insulating coating_MCOTI

CN | EN

Electronic control
New energy vehicle electronic controls are iterating in the direction of high voltage, high power integration, small size and lightweight, and have long been faced with severe vehicle working conditions such as high temperature, strong vibration, and alternating temperature and humidity. MCOTI adhesive can simultaneously achieve insulation and heat conduction, sealing and vibration damping, and bonding of dissimilar materials. It adapts to the trend of electronic control upgrades and is a key supporting material to ensure the stable and safe operation of electronic control.
Electronic control
PCBA conformal coating Ferrite Core bonding Thermal conductive insulating coating Chip protection Thermal interface materials Non-conductive/conductive sealant Thermal conductive potting
Thermal conductive insulating coating
Various electronic and power components in electric vehicles require insulation to ensure safe and reliable operation in different application scenarios. At the same time, due to high voltage and high current, thermal management is also a factor that needs to be considered in insulating coatings. The MEP 3700 series launched by MCOTI is a one-component heat-curing water-based epoxy spray material that can be sprayed directly on the surface of a radiator or metal base plate to form a dense, continuous, and highly adhesive thermally conductive insulating coating that can compress the creepage distance, breakdown risk, and heat conduction path between power devices, magnetic components, and metal casings.

Water-based epoxy functional coating

The coating uses water as the solvent and is environmentally friendly

Precise spraying, stable process, Cpk up to 1.67

Excellent flexibility, toughness and adhesion

Insulating coating can be applied to housing and water cooling plate insulation

In MOSFET applications, thermally conductive insulating coatings can be used as an alternative solution to ceramic insulating sheets.

Thermal conductive insulating coating
Thermal conductive insulating coating
Product advantages

The coating dries quickly to form a film, forming initial solid strength.

Support R corner/groove/side/different 3D design spraying

Thermal conductive insulation coating thermal resistance as low as 0.176℃·in²/W

Thickness of 100~250μm can withstand high voltage of 3000~6000V

High reliability, excellent performance can be maintained after long-term aging

3 years of automotive grade mass production, production yield ≥98%

Product parameters
Product nameMEP 3700MEP 3700-20MEP 3700-17
chemical systemWater-based epoxyModified epoxyModified epoxy
AppearanceTransparent/Customizablewhite / customizablewhite / customizable
fillernoneAl₂O₃Al₂O₃
Viscosity [mPa·s]150030~7030~70
proportion~1.0~1.75~1.75
Curing conditionsHeat cure:Heat cure:Heat cure:
30min@150℃30min@150℃30min@150℃
hardness> 2H> 2H> 2H
Volume resistivity [ohm·cm]>2.0×10¹⁴>1.0×10¹⁴>1.0×10¹⁴
Thermal conductivity [W/(m·K)]0.221.7
Breakdown voltageLeakage current:Leakage current:Leakage current:
< 0.1mA, @6000V for 100μm thickness< 0.1mA, @5000V for 150μm thickness< 0.1mA, @5000V for 100μm thickness
Dielectric strength [kV/mm]>60>30>50
Operating temperature [℃]-40~180-40~180-40~180
RoHS/REACH/HF/VOCpasspasspass


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