Insulating Powder Coating is engineered to provide high electrical insulation for motor components, transformers, and electronic devices. You benefit from excellent breakdown voltage, strong adhesion, thermal stability, and flame retardancy, making it suitable for general enameled wires, electronic component encapsulation, and high-voltage equipment. Its formulation allows rapid low-temperature curing or residual heat curing for heat-sensitive or heavy components, ensuring consistent performance and reliability in demanding applications.
You can use this insulating powder coating for components that require both electrical insulation and mechanical protection:
| Industry / Field | Typical Products / Parts | Benefits |
|---|---|---|
| Electrical Motors | Motor casings, stators, rotors | High dielectric strength, edge coverage >30%, excellent adhesion |
| Electronic Components | Small transformers, capacitors, inductors | Thermal stability, flame retardant, moisture resistant |
| Measurement Instruments | Electrical meters, controllers | Continuous, dense coating, durable and reliable |
| Industrial Equipment | Sensors, relays, circuit boards | Resistance to heat, wear, water, acids, alkalis, and salts |
Recommended Application Method: Fluidized bed preheating or electrostatic spraying with residual heat curing for large/heavy parts
Curing Conditions: Adjustable depending on part size and thermal tolerance
These insulating powder coatings are manufactured and tested according to internationally recognized standards:
IEC 60384-14 – Insulating materials for enameled wires
IEC 60085 – Thermal evaluation of electrical insulation
ISO 2409 – Cross-cut adhesion test
ISO 4624 – Pull-off adhesion test
ISO 6270-2 – Humidity resistance test
ISO 7253 / ASTM B117 – Salt spray corrosion test
ISO 15184 / ASTM D3363 – Scratch and pencil hardness tests
IEC 60243-1 – Electrical strength (dielectric breakdown) test
RoHS Directive – Compliance with restricted hazardous substances
| Item | Specification | Test Method / Standard |
|---|---|---|
| Appearance | Uniform color, loose powder, free-flowing | Visual inspection |
| Color | Customer-defined | Colorimeter + visual check |
| Adhesion | 0 level (excellent) | ISO 2409 / ISO 4624 |
| Impact Resistance | Good at 50 kg·cm | ISO 6272 (drop weight) |
| Flexibility | Bending 3 mm, no cracks | ISO 1519 |
| Cupping Test | Pass at 8 mm | ISO 1520 |
| Surface Hardness | 1H–2H (pencil) | ASTM D3363 |
| Electrical Insulation | Breakdown voltage >40 KV/mm | IEC 60243-1 |
| Moisture Resistance | >1000 h | ISO 6270-2 |
| Salt Spray Resistance | >1000 h | ISO 7253 / ASTM B117 |
High Electrical Insulation
You gain reliable dielectric strength and edge coverage >30%, suitable for high-voltage applications.
Thermal and Flame Resistance
Resistant to heat, aging, and flame, ensuring stable performance in electronic and motor components.
Excellent Adhesion and Flexibility
Maintains integrity on complex surfaces, preventing cracking, peeling, or flaking.
Chemical and Mechanical Durability
Resistant to water, acids, alkalis, salts, and mechanical wear.
Customizable Colors and Curing Options
You can select color options and adapt curing methods for rapid or residual heat processing.
| Item | Specification |
|---|---|
| Standard Packaging | 20 kg sealed kraft paper box with inner plastic liner |
| Storage Conditions | Dry, ventilated environment below 30°C; avoid sunlight, moisture, and chemical exposure |
| Shelf Life | 6–12 months in sealed packaging |
| Handling | Keep powder sealed until use to maintain flowability and coating quality |
1. What types of components can be coated with this insulating powder?
You can use it on motors, stators, rotors, transformers, sensors, and other electronic components requiring high dielectric strength.
2. What is the dielectric breakdown voltage of the coating?
The coating provides a breakdown voltage greater than 40 KV/mm, ensuring reliable insulation performance.
3. Can this powder coating be cured using residual heat?
Yes. For heat-sensitive or heavy components, you can use residual heat curing to achieve complete polymerization.
4. How resistant is the coating to moisture and corrosion?
It withstands over 1000 hours of humidity exposure and salt spray testing, providing long-term reliability.
5. Is the coating flame retardant and thermally stable?
Yes. It has excellent flame retardancy and thermal stability, making it suitable for high-temperature environments.
6. Can I customize the color of the coating?
Yes. You can select from standard shades or provide custom color specifications.
Powder coatings can be categorized by resin system (epoxy, polyester, hybrid, polyurethane), appearance (smooth, texture, hammer, metallic, pearlescent), or performance level (anti-corrosion, heat-resistant, UV-resistant, architectural grade, automotive grade).
Powder coatings offer thousands of colors in gloss, matte, satin, metallic, candy, texture, wrinkle, hammer tone, wood grain, fluorescent, and other custom effects. Special powders can create soft-touch, anti-scratch, anti-fingerprint, or anti-graffiti surfaces.
The process generally includes surface pretreatment (degreasing, phosphating, chromating, sandblasting), drying, electrostatic spraying, curing in an oven, and cooling. A well-controlled pretreatment and curing process ensures strong adhesion and long service life.
Powder coatings are environmentally friendly, solvent-free, and produce minimal waste. They offer excellent corrosion resistance, weather durability, mechanical strength, and uniform film appearance. The coating is tough, impact-resistant, scratch-resistant, and has a long lifespan.
Powder coatings are widely used in appliances, aluminum profiles, architectural components, automotive parts, bicycles, furniture, outdoor equipment, machinery, electrical cabinets, pipeline systems, and general industrial and consumer goods.
Powder coating is a dry finishing technology where finely ground powder is electrostatically sprayed onto a metal or non-metal surface and then cured at high temperature. After curing, the powder melts into a continuous, durable, and decorative coating layer.
Powder coating protects the substrate from corrosion, weathering, chemical attack, and mechanical wear. It also provides decorative appearance with rich colors, gloss levels, textures, and special effects.
In many industrial applications, powder coating outperforms liquid paint. It forms a thicker and tougher coating, resists corrosion and chemicals better, and does not contain VOCs. It also provides excellent consistency and cost-effective mass production.
It is called powder coating because the coating material is a solid powder instead of a liquid paint. The coating is formed by melting and curing powder particles under heat.
Powder coatings include several families depending on resin chemistry:
• Epoxy powders
• Polyester powders
• Epoxy-polyester hybrid powders
• Polyurethane powders
• Acrylic powders
• Fluorocarbon (PVDF) powders
Each type has its own performance features such as corrosion resistance, UV resistance, chemical resistance, outdoor durability, or decorative properties.
Powder coatings are based on thermoset or thermoplastic resins combined with pigments, curing agents, fillers, additives, and in some cases metallic or effect particles. Common substrates include steel, aluminum, galvanized metal, MDF, and certain heat-resistant plastics.
The lifespan depends on powder type, film thickness, application method, pretreatment, and service environment. Indoor coatings can last more than 10–20 years. High-grade outdoor polyester or fluorocarbon powders can last 15–25 years or longer under UV exposure.
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