Powder Coatings for Electric Insulation
We are a manufacturer based in China. We specialize in providing high-quality Powder Coatings for Electric Insulation for industrial clients across various sectors. Whether you need chemicals consultation or technical support, our team is here to help.
Category：Paint chemicals Own Brand：MT /MOQ:100KG /From China/ B2B only.
Introduction
Features:
High density of coating layers;
Excellent Electrical Insulation;
Excellent mechanical properties
Powder Coatings for Electric Insulation: Technical Overview
| Category | Specifications |
|---|---|
| Definition | Thermosetting powder coatings designed to provide electrical insulation and protection for conductive components |
| Key Functions | – Prevent electrical leakage – Resist high voltages – Protect against environmental factors |
Coating Types & Performance
| Type | Dielectric Strength (kV/mm) | Temperature Resistance (°C) | Common Applications |
|---|---|---|---|
| Epoxy-Based | 30-50 | 150-180 | Transformers, bus bars |
| Silicone-Modified | 20-40 | 200-250 | High-temperature coils |
| Polyester-Imide | 25-45 | 180-220 | Motor windings, stators |
| Fluoropolymer | 15-30 | 250-300 | Aerospace components |
Key Electrical Properties
| Property | Test Method | Typical Value |
|---|---|---|
| Dielectric Strength | IEC 60243 | ≥30 kV/mm |
| Volume Resistivity | IEC 60093 | ≥10¹⁴ Ω·cm |
| Arc Resistance | ASTM D495 | ≥180 sec |
| Tracking Resistance | IEC 60112 | CTI ≥600 V |
Application Process
| Step | Parameters | Equipment |
|---|---|---|
| Surface Preparation | Degreasing, sandblasting | Pretreatment line |
| Powder Application | Electrostatic spray (40-80 kV) | Spray booth |
| Curing | 160-200°C × 10-20 min | Convection oven |
| Quality Control | Thickness: 80-150 µm Adhesion: Class 0 (ISO 2409) |
Coating analyzer |
Advantages vs. Liquid Coatings
| Feature | Powder Coating | Liquid Coating |
|---|---|---|
| VOC Emissions | Zero | High |
| Edge Coverage | Excellent | Moderate |
| Curing Time | Fast (10-20 min) | Slow (hours) |
| Waste Reuse | 95%+ reclaimable | Not possible |
Industry Applications
| Sector | Components | Key Requirements |
|---|---|---|
| Power Electronics | Busbars, capacitors | High dielectric strength |
| Electric Motors | Stators, rotors | Thermal + abrasion resistance |
| Consumer Electronics | PCBs, heat sinks | Thin-film insulation |
| Renewable Energy | Solar inverters | UV + moisture resistance |
Future Trends
| Trend | Impact |
|---|---|
| Low-Temperature Cure | Enables coating of heat-sensitive substrates |
| Enhanced Thermal Conductivity | Improves heat dissipation while insulating |
| Self-Healing Coatings | Repairs minor cracks autonomously |
| Halogen-Free Formulations | Eco-friendly flame retardancy |
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