Anhydride Cured Epoxy Powder Coating is a thermoset coating system developed to provide you with excellent electrical insulation properties, strong chemical resistance, and stable mechanical performance. By using anhydride curing agents, this epoxy formulation forms a highly crosslinked network during curing, resulting in a dense, uniform protective film.
When you select Anhydride Cured Epoxy Powder Coating, you gain a technically reliable solution for indoor metal components that require corrosion protection, dielectric stability, and long-term structural integrity. It is particularly suitable for electrical, industrial, and OEM applications where controlled curing and consistent film performance are essential.
You can apply Anhydride Cured Epoxy Powder Coating across multiple professional sectors:
Construction and architecture – Indoor metal structures, brackets, window and door frames installed in sheltered environments
Home appliances and electronics – Metal panels, internal frames, electrical enclosures, motor housings
Automotive and transportation – Interior structural components and protected underbody parts
Industrial equipment – Machine housings, piping systems, tools, and protective enclosures
Electrical insulation components – Busbar supports, transformer housings, and motor stator parts
OEM production lines – Automated coating systems requiring stable curing characteristics and batch consistency
Performance validation can be conducted according to internationally recognized standards such as ISO 9227 for corrosion resistance, ISO 2409 for adhesion, ISO 6272 for impact resistance, and IEC standards for dielectric performance where required.
| Item | Typical Specification |
|---|---|
| Resin System | Epoxy resin with anhydride curing agent |
| Coating Type | Thermoset powder coating |
| Application Method | Electrostatic spray |
| Curing Condition | Typically 160–200°C metal temperature, depending on formulation |
| Recommended Film Thickness | 60–120 μm |
| Adhesion | Excellent, compliant with ISO 2409 after proper pretreatment |
| Corrosion Resistance | High, evaluated per ISO 9227 upon request |
| Impact Resistance | Good mechanical strength, tested per ISO 6272 |
| Electrical Insulation | Suitable for electrical applications, verified per IEC standards upon request |
| Surface Finish Options | Smooth, matte, textured |
Note: Final coating performance depends on substrate preparation, curing accuracy, operating environment, and film thickness.
Stable Electrical Insulation Performance
The anhydride-cured epoxy network provides reliable dielectric properties for electrical components.
Strong Chemical and Corrosion Resistance
You obtain a dense protective barrier that resists moisture, oils, and many industrial chemicals.
Excellent Adhesion
With proper pretreatment such as phosphating or chromate-free conversion, the coating bonds securely to metal substrates.
Controlled Curing Behavior
The anhydride curing system supports consistent crosslinking under defined baking conditions, helping you maintain production stability.
Mechanical Durability
The cured film withstands handling, assembly, and operational stress in industrial environments.
In an electrical equipment manufacturing project, you required a coating solution for motor housings and internal support brackets that demanded both corrosion protection and dielectric stability. The components were installed in a humid industrial facility with continuous operation.
After applying Anhydride Cured Epoxy Powder Coating at a controlled film thickness of approximately 90 μm over pretreated steel substrates, adhesion and corrosion resistance were verified in accordance with ISO 2409 and ISO 9227. Electrical insulation performance was internally assessed following IEC-related procedures. The coated components demonstrated stable performance and reduced maintenance requirements during long-term operation.
Powder coatings can be categorized by resin system (epoxy, polyester, hybrid, polyurethane), appearance (smooth, texture, hammer, metallic, pearlescent), or performance level (anti-corrosion, heat-resistant, UV-resistant, architectural grade, automotive grade).
Powder coatings offer thousands of colors in gloss, matte, satin, metallic, candy, texture, wrinkle, hammer tone, wood grain, fluorescent, and other custom effects. Special powders can create soft-touch, anti-scratch, anti-fingerprint, or anti-graffiti surfaces.
The process generally includes surface pretreatment (degreasing, phosphating, chromating, sandblasting), drying, electrostatic spraying, curing in an oven, and cooling. A well-controlled pretreatment and curing process ensures strong adhesion and long service life.
Powder coatings are environmentally friendly, solvent-free, and produce minimal waste. They offer excellent corrosion resistance, weather durability, mechanical strength, and uniform film appearance. The coating is tough, impact-resistant, scratch-resistant, and has a long lifespan.
Powder coatings are widely used in appliances, aluminum profiles, architectural components, automotive parts, bicycles, furniture, outdoor equipment, machinery, electrical cabinets, pipeline systems, and general industrial and consumer goods.
Powder coating is a dry finishing technology where finely ground powder is electrostatically sprayed onto a metal or non-metal surface and then cured at high temperature. After curing, the powder melts into a continuous, durable, and decorative coating layer.
Powder coating protects the substrate from corrosion, weathering, chemical attack, and mechanical wear. It also provides decorative appearance with rich colors, gloss levels, textures, and special effects.
In many industrial applications, powder coating outperforms liquid paint. It forms a thicker and tougher coating, resists corrosion and chemicals better, and does not contain VOCs. It also provides excellent consistency and cost-effective mass production.
It is called powder coating because the coating material is a solid powder instead of a liquid paint. The coating is formed by melting and curing powder particles under heat.
Powder coatings include several families depending on resin chemistry:
• Epoxy powders
• Polyester powders
• Epoxy-polyester hybrid powders
• Polyurethane powders
• Acrylic powders
• Fluorocarbon (PVDF) powders
Each type has its own performance features such as corrosion resistance, UV resistance, chemical resistance, outdoor durability, or decorative properties.
Powder coatings are based on thermoset or thermoplastic resins combined with pigments, curing agents, fillers, additives, and in some cases metallic or effect particles. Common substrates include steel, aluminum, galvanized metal, MDF, and certain heat-resistant plastics.
The lifespan depends on powder type, film thickness, application method, pretreatment, and service environment. Indoor coatings can last more than 10–20 years. High-grade outdoor polyester or fluorocarbon powders can last 15–25 years or longer under UV exposure.
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