Transparent powder coating
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WEB: std-coatings.com
Introduction
Transparent powder coatings are prepared by mixing carefully selected raw materials, including resins, curing agents, and additives. The resulting transparent powder coatings offer excellent economic and social benefits and have a broad market potential.
Application
Transparent powder coating is suitable as a topcoat for metal objects, providing excellent protection and decorative effects. Examples include metal furniture, hardware, bicycles, door handles, and handicrafts. It is also suitable as a protective topcoat for metallic powder coatings. Furthermore, it is suitable for automotive exterior parts, car wheels, interior and exterior paints, architectural coatings, interior and exterior metal components, and gardening equipment.
Features
| Item | Specification |
|---|---|
| Chemical Type | Epoxy/Polyester or Pure Polyester Type |
| Appearance | Flat |
| Curing Condition (Workpiece Temperature) | 200℃ / 10min; improper curing may cause loss of color, gloss, and coating performance |
| Gloss | Depends on specific product |
| Storage Condition | Sealed and stored in a dry, cool place below 30℃ |
| Shelf Life | 6 months (<30℃), 12 months (<25℃) |
| Packaging Specification | 25kg/carton |
Technical indicators
Note: Substrate and pretreatment: Mechanical performance tests were conducted using 0.6mm thick degreased cold-rolled steel plates; corrosion and aging resistance tests were conducted using 0.6mm thick zinc phosphated steel plates or chromated aluminum plates.
• Film thickness: 60-80μm • Curing conditions: 200℃/10min (workpiece temperature)
| Item | Index | Test Standard |
|---|---|---|
| Bending | Passed, curvature diameter 6mm | ASTM D522 |
| Passed, curvature diameter 4mm | GB/T 1731 | |
| Dry Adhesion | Passed, result 5B | ASTM D3359 |
| Passed, result Grade 0 | ISO 2409 | |
| Cupping Test | Passed, 6mm, no cracking/peeling | ISO1520 |
| Passed, 6mm, no cracking/peeling | GB/T 9753 | |
| Impact Resistance (Direct Impact) | ≥50kg·cm | ASTM D2794 |
| ≥50kg·cm | GB/T 1732 | |
| Pencil Hardness | ≥H | ASTM D3363 |
| ≥H | GB/T 6739 | |
| Chemical Resistance | Good (tested with general acids, alkalis, oils at room temperature) | / |
| Water Mist Resistance | Passed, 1000h, no blistering or loss of gloss | ASTM D1735 |
| Water Immersion Resistance | Passed, 24h, no blistering or loss of gloss | ASTM D870 |
| Neutral Salt Spray | Passed, 250h, no blistering or peeling | ISO 9227 |
Construction Reference
Transparent powder coating can be applied using manual or automatic spraying equipment. For best results, automatic spraying equipment is recommended. Unadhered powder can be recycled through a suitable recovery system.
Atomizing air pressure: ~0.7 bar
Primary air pressure: ~0.7 bar
Recommended voltage: 40~90 kV
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