Powder Coatings on Aluminum
We are a manufacturer based in China. We specialize in providing high-quality Powder Coatings on Aluminum for industrial clients across various sectors. Whether you need chemicals consultation or technical support, our team is here to help.
Category：Application industries, Paint chemicals Own Brand：MT /MOQ:100KG /From China/ B2B only.
Introduction
Features:
Outstanding water resistance and anti-corrosion;
Excellent weather resistance and anti-scratching;
Excellent overbake resistance
Powder Coatings for Aluminum: Technical Overview
| Category | Specifications |
|---|---|
| Definition | Dry finishing process applying protective/decorative polymer powder to aluminum substrates |
| Key Benefits | Corrosion resistance, UV protection, aesthetic versatility |
Coating Types Comparison
| Coating Type | Advantages | Limitations | Typical Applications |
|---|---|---|---|
| Polyester-TGIC Free | Excellent weatherability REACH compliant |
Moderate chemical resistance | Architectural extrusions Window frames |
| Polyurethane | Superior abrasion resistance High gloss retention |
Higher cost | Automotive trim Marine components |
| Epoxy | Best chemical resistance Strong adhesion |
Poor UV stability | Industrial equipment Electrical enclosures |
| Hybrid (Epoxy-Polyester) | Balanced properties Cost-effective |
Limited outdoor use | Indoor furniture Consumer electronics |
Surface Preparation Standards
| Process | Parameters | Purpose |
|---|---|---|
| Alkaline Cleaning | pH 9-11. 50-60°C | Remove oils/contaminants |
| Chromate Conversion | 30-90 sec immersion | Enhance adhesion/corrosion resistance |
| Non-Chromate Pretreatment | Zr/Ti based alternatives | Eco-friendly option |
| Rinsing | DI water, <50 ppm impurities | Prevent staining |
Application Parameters
| Parameter | Requirements | Equipment |
|---|---|---|
| Film Thickness | 60-120 μm | Eddy current gauge |
| Curing Schedule | 180°C × 15 min | Convection oven |
| Transfer Efficiency | 70-85% | Electrostatic gun |
| Pre-heat | 100-120°C × 5 min | For complex geometries |
Performance Standards
| Test | Requirement | Method |
|---|---|---|
| Salt Spray | 1000h (Class 9) | ASTM B117 |
| QUV Weathering | ΔE<3 after 2000h | ASTM G154 |
| Adhesion | 5B (cross-cut) | ASTM D3359 |
| Bend Test | 2T pass | ASTM D522 |
Color & Finish Options
| Option | Characteristics | Gloss Range |
|---|---|---|
| Metallic | Aluminum flake effects | 20-80% |
| Matte | Non-reflective surface | 10-30% |
| Textured | Hammer-tone patterns | 15-40% |
| Clear Coat | Substrate visibility | 85-95% |
Industry Applications
| Sector | Components | Key Requirements |
|---|---|---|
| Architecture | Curtain walls, roofing | Weather resistance |
| Transportation | Vehicle panels, railings | Impact resistance |
| Consumer Goods | Electronics housings | Aesthetic quality |
| Industrial | Heat sinks, machinery | Thermal stability |
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