Pigments Powder for Powder Coating Applications

Integrated Solutions for Powder Finishing

Deqing Demi Pigment Technology Co., Ltd. is a reliable supplier of inorganic colorants for the global powder coating industry. Our production process focuses on removing volatile components that could compromise the film quality during the bake cycle. We work with manufacturers of polyester, epoxy, and hybrid powder systems to provide pigments that offer consistent fluidization and uniform color development. Our materials support the transition toward high-efficiency, zero-VOC finishing technologies.

Powder Coating Usage Sectors

• Architectural Extrusions: Powder coatings for window frames and curtain walls.
• Domestic Appliances: "White goods" finishes requiring high chemical and heat resistance.
• Job-Shop Coating: General industrial finishing of metal parts and assemblies.
• Automotive Components: Powder coatings for wheels, suspension parts, and engine components.

Powder Coating Technical Specifications

Functional Attributes for Powder Systems

• Thermal Resistance: Zero color drift during the standard 10-20 minute curing cycles at 200掳C.
• Compatibility: Does not react with standard curing agents like TGIC or HAA.
• Fine Texture: Enables the production of high-gloss, smooth finishes without surface haze.
• Non-Leaching: Pigments are completely encapsulated by the resin, providing high corrosion resistance.

• Q: Do these pigments affect the charging of the powder?

  A: Our inorganic oxides have very high resistivity and do not negatively impact the transfer efficiency or wrap-around of the powder coating during application.

• Q: Can these be used for thin-film powder coatings?

  A: Yes, the fine particle size distribution allows for uniform coloration even in coatings as thin as 40-50 microns.

Precision Manufacturing for Dry Systems

Our pigments undergo a vacuum-drying process to ensure the lowest possible moisture content, which is essential for the stability of the dry powder during storage and application.

Sample Formulation: We can provide starting-point formulations for common powder coating types (e.g., RAL 7035 Grey or RAL 9005 Black) to help our customers achieve fast color matching in their own facilities.

Managing Color Consistency in the Bake

Color science for powder coatings requires understanding the "over-bake" stability. We measure the color difference (Delta E) between a standard bake cycle and an over-bake cycle (e.g., 20 minutes extra at 200掳C). Our pigments are designed to keep this Delta E below 1.5, ensuring that if a production line stops, the parts in the oven do not change color. We provide these performance maps to help coaters set their process windows for maximum yield.