IoTBattery
Material Technology
for Achieving High Insulation
and
Lightweight
Epoxy Resin Powder Coating with High Tracking Resistance for Electrical Insulation
Epoxy Coating Powder for Coil-End Insulation SUMILITERESIN™ ECP is Coating Powder for Insulation Based on Epoxy Resin. It Has High Reliability, Workability, and Good Electric Properties.
Our High Tracking Resistance Powder Coating
- Reduces Creepage Distance
- No Mold Required
- Increases Design Flexibility
- Contributes to Labor Savings
Advantage
Advantages of Epoxy Resin（Our Estimation）
- High Electrical Insulation
- Good Adhesion to Metals
- Low Melt Viscosity When Heated (Easy to Cover)
Advantages of Powder Coatings（Our Estimation）
| View Point | Powder Coatings | Thermoplastic Molding Materials | Heat Shrink Tubing (Thermoplastic) |
|---|---|---|---|
| Design Flexibility | ○ | ○ | △ |
| Labor Saving | ○ | ○ | △ |
| Mold Requirement | ○ | × | ○ |
| Adhesion to Metal | ○ | △ | × |
| Implementation Environment | △ | ○ | ○ |
Epoxy Resin Powder Coating with High Tracking Resistance
（Developed Product, Our
Measurement
Values）
| Item | Unit/Condition | Non-Flame Retardant Type | Flame Retardant Type | |
|---|---|---|---|---|
| Standard Curing Conditions | － | 170℃ for 40 min | 170℃ for 40 min | |
| Electrical Properties | Tracking Resistance (CTI) | V, In-house method | ≧800 | ≧800 |
| Dielectric Breakdown Voltage | kV/mm, 1mm | 37 | 35 | |
| Thermal Properties | Flame Retardancy | 0.8 mm thickness, UL94 V method | ̶ | V-0 class |
| Glass Transition Temperature | ℃, TMA | 121 | 84 | |
| Coefficient of Linear Expansion |
ppm(≦Tg), TMA | 28 | 49 | |
| ppm(≧Tg), TMA | 101 | 134 | ||
| Mechanical Properties | Three-Point Bending Strength | MPa | 120 | 84 |
| Shear Adhesion Strength | MPa, C1100 | 12 | 17 | |
| Dupont Impact Strength | cm,1/16inch,500g, 500μm thickness |
≧50 | ≧50 |
Test Method
Coating Method
Electrostatic coating is suitable for powder coating on metal.Powder particles are attached to metal surfaces by electrostatic attraction using a spray gun or a fluidizing bed, then they are cured by heating.You can select areas to coat by masking.
Coating to Curing Process (Cross-Section Image)
