Flame retardant insulation powder coating

Surface Finish Options Overview

Brief description:

Flame retardant insulation pressure-resistant powder coating made of pure epoxy resin, through the dipping process, the film thickness reaches 300 ~ 1500um.

Features:

Smooth surface, high hardness, passed ROHS test, and meets environmental protection requirements. Flame retardant performance reaches UL94-Vo level. Insulation strength 300um is greater than 3kv.

In the fields of electrical equipment, household appliances, and industrial facilities, safety and reliability are always top priorities for procurement managers. As electrification and smart technologies continue to advance, traditional coatings can no longer meet the rising standards of fire protection and insulation. This is where Flame Retardant Insulating Powder Coating comes in — providing unmatched performance and long-term security.

Why Choose Flame Retardant Insulating Powder Coating?

Superior Flame Resistance

Effectively prevents flame spread and enhances overall fire safety.

Compliant with international standards such as UL 94, IEC, and ASTM.

Excellent Electrical Insulation

High dielectric strength and low conductivity ensure safe operation of electrical systems.

Prevents short circuits, leakage, and arc breakdown risks.

Eco-Friendly & Energy-Saving

100% solvent-free (VOC-Free), meeting global environmental regulations.

One-coat application reduces production costs, labor, and energy consumption.

Durability with Aesthetics

Strong adhesion and mechanical resistance with long-lasting protection against impact, heat, humidity, and corrosion.

Available in a wide range of finishes and colors to combine function with design.

Key Applications

Flame Retardant Insulating Powder Coating is widely used across industries:

Electrical & Electronics: transformer housings, switchgear, busbars, distribution boxes

Home Appliances: water heaters, air conditioners, induction cookers, refrigerator parts

Industrial Machinery: motor housings, generators, control cabinets

Public Infrastructure: rail transit, power supply systems, communication equipment

In these applications, it not only ensures safety and compliance but also builds long-term trust and value for manufacturers.

FAQ

1. What is Powder Coating?

Powder coating is a dry finishing process used to apply a protective and decorative coating on metal or other surfaces. Instead of using liquid paint, fine powder particles (usually made of polyester, epoxy, or hybrid resins) are electrostatically charged and sprayed onto a conductive surface. The coated object is then baked in an oven, where the powder melts, flows, and cures into a smooth, durable finish.

Key features:

Durable, hard finish

Resistant to scratches, corrosion, and UV

Environmentally friendly (no VOCs)

2. Benefits of Powder Coating

Powder coating offers several advantages over traditional liquid painting:

Durability: Resistant to chipping, scratching, fading, and wear.

Corrosion Protection: Provides excellent protection against rust and chemicals.

Environmentally Friendly: No volatile organic compounds (VOCs) and minimal waste.

Efficiency: Overspray can be collected and reused, up to 99% material utilization.

Uniform Finish: Smooth, even coating without runs or drips.

Cost-Effective: Single-coat systems can achieve high film thickness, reducing labor and energy.

Aesthetic Variety: Wide range of colors, textures, and effects.

3. What Temperature to Cure Powder Coating

The curing temperature depends on the type of powder used:

Epoxy powder: ~160–200°C (320–392°F)

Polyester powder: ~180–210°C (356–410°F)

Hybrid (Epoxy-Polyester) powder: ~180–200°C (356–392°F)

Typical curing time: 10–20 minutes depending on thickness and oven type.

Always follow the powder manufacturer’s specifications for best results.

4. Process for Powder Coating

The powder coating process usually follows these steps:

Surface Preparation:

Clean the surface thoroughly (remove oil, grease, rust, or dirt)

Methods: chemical cleaning, sandblasting, or phosphating

Pre-Treatment:

Apply a conversion coating or primer if needed to improve adhesion

Powder Application:

Spray the powder using an electrostatic spray gun or fluidized bed

Curing:

Bake the coated object in an oven at the recommended temperature for the powder type

The powder melts and forms a continuous, smooth film

Cooling & Inspection:

Let the coated item cool

Inspect for defects, uniform coverage, and desired thickness

5. How to Spray Powder Coat

Equipment Needed:

Electrostatic spray gun

Compressed air supply

Powder feed hopper or container

Grounding of the object

Steps:

Ground the object: Ensures the charged powder is attracted to the surface.

Spray evenly: Hold the gun 6–12 inches from the surface, moving in smooth, overlapping strokes.

Apply sufficient powder: Ensure full coverage without excessive buildup.

Cure immediately: Transfer the sprayed item to the curing oven to fuse the powder into a solid coating.

Tips:

Maintain consistent speed and distance while spraying.

Use proper ventilation to reduce airborne powder accumulation.

Test a small area to check film thickness and color before full application.