Metallic powder coatings continue to gain market share across automotive, appliance, architectural, and industrial applications. As demand rises, the performance of powder coating raw materials, especially aluminum pigments, directly affects coating appearance, durability, and processing stability.
This article explains why non-leafing aluminum powder for metallic powder coating systems has become the preferred choice and how it delivers superior consistency and visual impact.

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Understanding Aluminum Powder for Powder Coatings

Aluminum pigments used in metallic powder coating systems are produced through ball-milling and classification processes that create thin, reflective flakes. When properly formulated, aluminum powder for powder coatings offers:

• Clean metallic brightness

• Strong covering power

• Excellent orientation behavior

• Stable performance during extrusion and curing

At ZHANGQIU METALLIC PIGMENT CO., LTD, our aluminum pigment powders are designed to withstand the thermal and mechanical stresses of powder coating production.

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Non-Leafing Aluminum Powder: The Core Technology

Why Non-Leafing Structure Is Important

Most powder coating systems require non-leafing aluminum powder, meaning the flakes disperse uniformly within the coating instead of floating and forming a barrier layer. This structure ensures:

• Even metallic appearance

• Superior adhesion

• Better mechanical properties

• Compatible curing and film formation

This aligns with global market usage—over 90% of powder coating aluminum pigments are non-leafing, based on industry survey data (APCRA, 2023).

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Resin-Coated Technology for Enhanced Performance

Powder coatings operate under high heat (up to 200°C) and mechanical shear. To avoid pigment degradation, resin-coated aluminum pigment technology has become essential.

Benefits of resin-coated aluminum pigment:

• Improved heat resistance

• Reduced risk of gas generation or reaction during extrusion

• Better dispersion in powder matrix

• Dust-free, safer handling

According to ZHANGQIU METALLIC PIGMENT’s internal performance data, resin-coated grades can improve processing stability by 25–40% compared to uncoated aluminum flakes.

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Narrow Particle Size Distribution for Uniform Effects

A narrow particle size distribution aluminum paste/powder produces:

• More consistent metallic appearance

• Higher reflectivity

• Smooth and uniform film surfaces

Fine-particle aluminum pigments (≤18µm) are often used in automotive wheels, bicycles, electronics, and appliances.

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Applications & Technical Comparison

Where Metallic Powder Coating Solutions Are Used

Common applications include:

Why Not Leafing Aluminum Powder for Powder Coatings?

Leafing aluminum tends to float and is mainly used in solventborne coatings—not suitable for thermosetting powder.

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FAQ: Aluminum Powder for Powder Coatings

1. Why is non-leafing aluminum powder preferred?

Because it disperses uniformly and supports proper curing. It also maintains mechanical strength and coating adhesion.

2. Will aluminum powder affect powder coating storage stability?

Not when resin-coated. Our resin-coated grades maintain stability for 12–24 months, depending on storage conditions.

3. Is aluminum powder safe for powder coating extrusion?

Yes — resin-coated products significantly reduce dusting and ignition risks. Always follow standard ATEX and NFPA guidelines.

4. Can water-borne aluminum paste be used for powder coatings?

No. Water-based aluminium paste is used for liquid coatings, not powder systems.

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Choose High-Performance Metallic Pigments for Powder Coating Success

Selecting the right non-leafing aluminum powder for metallic powder coating systems is crucial for consistent appearance and processing stability. Resin-coated and narrow particle-size pigments deliver superior brightness, durability, and safety — essential for modern high-performance powder coatings.

For technical support, custom formulations, or samples, contact:

 info@zqmetallic.com
 https://zqmetallic.com/
ZHANGQIU METALLIC PIGMENT CO., LTD — Global Supplier of Metallic Powder Coating Solutions