As global manufacturers demand higher performance from metallic powder coatings, double coated aluminum powder has quickly become a preferred solution. With better corrosion resistance, improved stability, and optimized particle-size control, this new generation of aluminum powder is reshaping the architectural, automotive, and industrial coating markets. ZHANGQIU METALLIC PIGMENT CO., LTD (ZQ) brings years of expertise to this field, delivering products engineered to meet increasingly strict performance standards.

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Understanding Double-Coated Aluminum Powder

Double-coated aluminum powder is produced using a dual-layer silica and resin surface treatment, significantly enhancing chemical resistance, salt-spray durability, and mortar resistance. Compared with conventional aluminum powders, the improved surface treatment delivers higher stability and safer processing during powder coating manufacturing.

ZQ’s current series includes particle sizes from 11 μm to 50 μm (D50), covering applications ranging from fine architectural finishes to durable industrial metallic effects.

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Advanced Surface Technology: Why Double Coating Matters

1. Superior Corrosion and Weather Resistance

The dual silica-resin coating forms a dense protective barrier. Testing shows:

• Enhanced resistance to salt spray exposure

• Better performance in alkaline and acidic environments

• Reduced risks of oxidation or gas generation

This makes the powder ideal for exterior architectural materials requiring long-term durability.

2. Consistent Particle Size Distribution (11–50 μm)

The series includes grades such as YJU-11A, YJU-18, YJU-35, YJU-50, each offering:

• Narrow particle size distribution

• Higher metallic uniformity

• Better curing performance in powder lines

Fine grades (11–18 μm) deliver smoother finishes, while larger flakes enhance texture and reflectivity.

3. Improved Processing & Safety Performance

Thanks to the dense coating structure:

• The powder shows excellent charging behavior

• Improved stability during extrusion and bonding

• Lower reactivity during storage and transport

Manufacturers benefit from fewer production risks and better consistency batch to batch.

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Applications & Performance Comparison

Double-coated aluminum powder is widely used in:

Comparison with standard aluminum powder:

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Frequently Asked Questions

Q1: Why is double-coated aluminum powder better for powder coatings?

The dual-layer silica and resin coating reduces chemical reactivity and improves corrosion resistance, essential for long-lasting metallic powder coatings.

Q2: Does particle size affect appearance?

Yes. Finer grades (11–18 μm) produce smoother finishes, while coarser grades (35–50 μm) deliver higher sparkle and stronger aluminum flop.

Q3: Can it be used in architectural-grade powders?

Absolutely. The series is engineered specifically for high-performance architectural and industrial applications requiring strong weather resistance.

Q4: Is this product safer to store and handle?

Yes. The dense SiO₂/resin coating significantly minimizes moisture reactivity, improving storage stability.

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Why Choose ZQ Double-Coated Aluminum Powder

ZQ’s double-coated aluminum powder provides advanced protection, stable performance, and superior metallic effects tailored for modern powder coating systems. With precise control over particle size and industry-leading surface treatment technology, ZQ offers a reliable solution for manufacturers seeking long-lasting, premium metallic finishes.

For technical support or product inquiries, contact info@zqmetallic.com or visit https://zqmetallic.com/.