With the rapid growth of metallic powder coatings, manufacturers are demanding pigments that offer higher stability, stronger chemical resistance, and more consistent metallic effects. 

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Understanding Double Coated Aluminum Powder

Double coated aluminum powder is a high-performance metallic pigment where each aluminum flake is protected by two layers of resin or silica-based coatings.
This structure enhances its durability, compatibility, and appearance when used in modern metallic powder coating systems.

Compared with standard aluminum pigments, this double-layer design significantly improves:

• Chemical resistance

• Moisture resistance

• Storage stability

• Orientation consistency

• Safety in processing

In metallic powder coating applications, these properties directly affect whether a coating shows uniform brilliance, stable color, and long-term weather resistance.

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Why Double Coated Aluminum Powder Is Different

1. High Stability & Anti-Corrosion Technology

Traditional aluminum pigments can react with moisture and release hydrogen gas—risking swelling, instability, or even safety hazards.

Double coated aluminum powder prevents this because:

• The inner coating isolates the aluminum from moisture.

• The outer coating enhances chemical stability during extrusion, mixing, and curing.

Independent testing shows that double-coated pigments maintain over 98% brightness retention after high-temperature baking compared with uncoated grades.

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2. Superior Non-Leafing Performance

Powder coating systems require non-leafing aluminum pigments to ensure that flakes evenly distribute within the powder layer, not floating to the surface.

Double coated aluminum powder offers:

• Narrow particle size distribution

• High orientation consistency

• Excellent metallic leveling without surface floating

This makes it ideal for metallic powder coating raw materials, especially in automotive parts, appliances, architectural panels, and outdoor equipment.

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3. Enhanced Compatibility for Modern Resin Systems

Double coated pigments are engineered for seamless compatibility with:

• Polyester powder coatings

• Hybrid resin systems

• Epoxy-polyester coatings

• High-durability outdoor systems

This ensures stable dispersion, reduced flocculation, and predictable color outcomes.

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Applications & Performance Comparison

Where Double Coated Aluminum Powder Performs Best

• Automotive components

• Bike parts and motorcycle accessories

• Outdoor furniture and architectural profiles

• Consumer electronics casings

• Appliances requiring premium metallic finishes

Comparison Table

This explains why metallic powder coating solutions increasingly prefer double-coated grades for consistent, defect-free results.

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Frequently Asked Questions

1. Is double coated aluminum powder safer?

Yes. The dual-layer coating minimizes hydrogen generation, meeting global powder safety standards.

2. Does it cost more than traditional aluminum pigments?

Yes, slightly—but manufacturers save costs through reduced rejects, improved stability, and superior performance.

3. Can it be used in all metallic powder coating systems?

It works best in non-leafing applications, especially polyester and hybrid systems.

4. How does it improve appearance?

Narrow particle size distribution ensures a smooth, bright, uniform metallic finish with fewer defects.

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Choose Better Protection and Better Performance

Double coated aluminum powder has become the new standard for high-performance metallic powder coatings—offering:

✔ Enhanced stability
✔ Safer processing
✔ Better metallic brilliance
✔ Improved durability
✔ Strong compatibility with modern resin systems

As one of Asia’s leading professional manufacturers, ZHANGQIU METALLIC PIGMENT CO., LTD provides high-quality, double-coated aluminum powder engineered for global powder coating markets.

For samples, pricing, or technical support:
 Website: https://zqmetallic.com/
 Email: info@zqmetallic.com