
Epoxy polyester powder coating series designed for automobile engine blocks, suspension systems, filters, springs and other parts.
-Good adhesion
-Good mechanical properties
-Excellent corrosion resistance
Application:
Suitable for various types of engines, suspension parts, filters and other automobile parts.
Curing time: 180℃~200℃×10~15 minutesSpraying method: high voltage electrostatic spraying 60~80KVRecommended film thickness: 60~150um
| Project | Instrument | Judgment standard | Test standard |
| Pencil hardness | Pencil hardness tester | ≥1H | ASTM D 3363
GB/T 6739 |
| Impact resistance | Impact tester | 50kg.cm(8mm diameter) 2.5Nm (16mm diameter) (20mm diameter) |
GB/T 1732 |
| ASTMD2794 | |||
| ISO 6272 | |||
| Bending resistance | Bending tester | ≤2mm (cylindrical shaft) Conical shaft bending Cylindrical shaft |
GB/T 6742 |
| ASTM D 1737 | |||
| ISO 1519 | |||
| Adhesion | Hundred grid test | Grade 0 | GB/T 9286 |
| ISO 2409 | |||
| ASTM D 3359 | |||
| Cupping | Cupping tester | ≥6mm | GB/T 9753 ISO 1520 |
| Salt spray resistance | NSS salt spray | ≥500H,Wb≤2mm | GB/T 1771 |
| ASTM B-117 | |||
| ISO 7253 | |||
| Moisture and heat resistance | Constant temperature and humidity chamber | ≥1000H slight gloss loss | GB/T 1740 ISO 6270 |
The above tests are all conducted on 0.8mm degreased and rusted cold-rolled steel plates, with a coating thickness of 60-80um. The performance indicators of the coating will vary slightly with the gloss.
Environmental protection requirements: This product does not contain arsenic, selenium, lead, hexavalent chromium, mercury, antimony, cadmium, and other heavy metals, and fully complies with RoHS2.0 environmental protection requirements.
Note: We will provide complete powder coating consultation and application customization solutions based on the actual needs of each customer. The test indicators mentioned in this report are all laboratory test data for reference only and are not intended as performance commitments for product applications. The results may vary depending on environmental factors and other conditions.
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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