Conductive Powder Coating

Surface Finish Options Overview

Product Features:

Dissipates static electricity to protect the normal operation of low-voltage or micro-electronic components.

Prevents the occurrence of electrical sparks and the accumulation of static electricity, which can cause static fires or injuries.

Can be formulated according to customer requirements for conductivity, with a range of 10⁴ to 10¹² ohms (adjustable).

Excellent adhesion, impact resistance, scratch resistance, flexibility, and high hardness.

Conductive powder coatings are functional coatings that, after application and curing on a substrate, can conduct electricity and dissipate electrical charges. They are used for static elimination, electromagnetic shielding, electric heating, and corrosion protection, and have wide applications in modern electronics, construction, transportation, military, and other fields.

Doped conductive powders offer moderate pricing and good conductivity, but with limited color options, primarily available in dark colors or with speckled patterns.

This product is a conductive powder primarily composed of polymers, conductive pigments, conductive fillers, and conductive additives. It offers a variety of colors to meet customer requirements. The conductive mechanism, based on quantum mechanics, involves the mixing (overlap) of molecular orbitals in polymers, which generates charge carriers and exhibits electrical properties. For conjugated chain polymers, intrinsic charge carriers (electrons and holes) are produced, displaying unique electrical properties, photoelectric effects, and light-conducting effects, and can form rectifying junctions.

Product Parameters

Application Fields:

Residential gas pipelines

Coal mine gas pipelines

Ventilation duct coatings

Anti-static covers and housings for precision instruments and meters

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.