RAL1021 RAL 7035 RAL2004 Electrostatic Powder Coating , Shelving Industrial Racks Powder Coating
Powder coating is a type of coating that is applied as a free-flowing, dry powder. The main difference between a conventional liquid paint and a powder coating is that the powder coating does not require a solvent to keep the binder and filler parts in a liquid suspension form. The coating is typically applied electrostatically and is then cured under heat to allow it to flow and form a “skin”.
There are two main categories of powder coatings: thermosets and thermoplastics. The thermosetting variety incorporates a cross-linker into the formulation. When the powder is baked, it reacts with other chemical groups in the powder to polymerize, improving the performance properties. The thermoplastic variety does not undergo any additional reactions during the baking process, but rather only flows out into the final coating.
Preparing the surface prior to coating is known as abrasive media blasting or mediablasting and shot blasting. Blast media and blasting abrasives are used to provide surface texturing and preparation, etching, finishing and degreasing.
The most common way of applying the powder coating to metal objects is to spray the powder using an electrostatic gun, or corona gun. The gun imparts a positive electric charge on the powder, which is then sprayed towards the grounded object by mechanical or compressed air spraying and then accelerated toward the workpiece by the powerful electrostatic charge.
Household appliances.
Coating of aluminum extrusions.
Window trims.
Wind powers.
Agricultural equipment.
Aerospace areas.
Interior and exterior furniture.
Architecture construction.
Metal fence and rails.
Food service areas.
Goods display, etc.
Thermoset Pros
Testing Items | Standard | Data |
Appearance | Flat And Smooth | |
Coating Thickness | GB/T6554-2003 | 50~70mm |
Gloss(60°) | GB/T9754-2007 | From 2%~100% to All Gloss |
Impact Resistance | GB/T1732-1993 | 50kg.cm |
Bending Performance | GB/T6742-2007 | 2mm |
Cupping | GB/T9753-2007 | 8mm |
Adhesion Force | GB/T9286-1998 | 0 Grade |
Hardness | GB/T6739-2006 | 2H |
Resistant to Salt (1000 Hours) | GB/T1771-2007 | No Change For Coating Appearance |
Humidity And Heat Resistance (1000 Hours) | GB/T1740-2007 | No Change For Coating Appearance |
Chemical Medium Resistance (240 Hours) 5%H2SO4 5%HCl 5%NaOH 5%NaCl | GB/T1763-1979 |
No Change For Coating Appearance No Change For Coating Appearance No Change For Coating Appearance No Change For Coating Appearance |
Heat Resistance | GB/T1735-2009 | It Can Reach Between 220℃/20minutes And 240℃/40minutes According To Color And Different Requirement |