Standard Building Materials Powder Coating

Surface Finish Options Overview

Polyester resin and TGIC curing agent as the main raw materials.

Coating characteristics:

Good adhesion, excellent mechanical properties, tough coating film.

Smooth and smooth film

Good Outdoor endurance

Excellent resistance to excessive baking

Application:

Suitable for various outdoor products such as: outdoor lighting, beach chair, solar water heater,

outdoor air conditioning unit, aluminum curtain wall, door and window frame, ceiling, highway guardrail, fence, sports facilities, communication equipment, etc

Application parameters:

Curing time

200°Cx10–15 mins

Recommended film thickness :

60-80 um

Spraying method:

high voltage electrostatic sprayin 60-80KV

STANDARD TEST METHOD FOR ITEMIZER

In the above tests, 0.8mm cold rolled steel plates with oil and rust removal were used. The film thickness was 40 ~ 80um, and the performance index of the film would change slightly with different gloss.

This product does not contain arsenic, selenium, lead, hexavalent chromium, mercury, antimony, cadmium and other heavy metals, and meets RoHS requirements.

Storage conditions: dry at about 35C, stored in the ventilated room, avoid direct sunlight. Under these conditions, the powder can be stored for 12 months, product can still be used after re-examined to be in good condition even if it is found to be expired.

Note: All the test indicators mentioned in this report are the data obtained from laboratory tests for reference only and do not represent the performance. commitment of the product application.

The results vary with environmental factors and other conditions.

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.