MEP 3700 series is a one-component heat-curing water-based epoxy spray material with a thermal conductivity of up to 2.0W. It is environmentally friendly and compliant. It can be directly coated on the surface of a radiator or metal base plate to form a continuous, strong adhesion thermal insulation film layer. While achieving high thermal conductivity, it also has electrical insulation and protection functions, creating a "thermal conductivity + insulation + protection integrated interface" and becoming an innovative choice for high-power module packaging. Suitable for high heat dissipation density scenarios such as AI power supplies, high-power DC/DC, OBC, and server VRM modules.
Application advantages:
Thermal conductive insulation coating can replace insulation sheets in application scenarios to avoid the risk of cracks in high-frequency vibration environments
The coating dries instantly and can be sprayed on R corners, grooves and sides. It supports different 3D designs and is flexible and efficient.
A single spraying is only 5μm, which can be repeatedly superimposed to reach the target thickness. Multiple sprayings can simultaneously compensate for defects and improve yield.
The coating thickness can be precisely controlled, the thickness is uniform, and the Cpk can reach 1.67
High insulation, thickness range of 100~250μm can meet the high voltage requirements of 3000~6000V in different application fields
High reliability, excellent performance can be maintained after long-term aging
Comparison with traditional ceramic sheet/PI film solution:
The coating is in direct contact with the metal substrate, and the contact thermal resistance between layers is low.
Traditional insulation sheets are prone to cracking in high-frequency vibration environments
The coating thickness is controllable and conforms to lightweight structural design
The coating process is more flexible and can cover curved edges and grooves
Fully automated operation, no need for cutting and positioning
| Product name | MEP 3700 | MEP 3700–20 | MEP 3700–17 |
| chemical system | Water-based epoxy | Modified epoxy | Modified epoxy |
| Appearance | Transparent/Customizable | white/customizable | white/customizable |
| filler | none | Al₂O₃ | Al₂O₃ |
| Viscosity [mPa·s] | 1,500 | 30~70 | 30~70 |
| proportion | ~1.0 | ~1.75 | ~1.75 |
| Curing conditions | Thermal curing: 30min@150℃ | Thermal curing: 30min@150℃ | Thermal curing: 30min@150℃ |
| hardness | > 2H | > 2H | > 2H |
| Volume resistivity [ohm·cm] | >2.0X10¹⁴ | >1.0X10¹⁴ | >1.0X10¹⁴ |
| Thermal conductivity [W/(m·K)] | 0.2 | 2.0 | 1.7 |
| Breakdown voltage | Leakage current:< 0.1mA, @6000V for 100μm thickness | Leakage current:< 0.1mA, @5000V for 150μm thickness | Leakage current:< 0.1mA, @5000V for 100μm thicknes |
| Dielectric strength [kV/mm] | >60 | >30 | >50 |
| Working temperature [℃] | -40~180 | -40~180 | -40~180 |
| RoHS/REACH/HF/VOC | pass | pass | pass |
Data Download
