This series of products uses saturated polyester resin and Primid curing agent as the main base material to make thermosetting powder coatings.
Good adhesion and good mechanical properties;
Smooth coating film and high gloss;
Good chemical and corrosion resistance;
Higher storage stability and shelf life than TGIC type.
Various wrinkles, metal, pearlescent effects and mixed colors, etc.
Suitable for coating of various products exposed outdoors for a long time: such as household appliances, architectural aluminum profiles, transportation facilities, stadium facilities, courtyard facilities, etc.
Carton packaging, lined with two layers of polyvinyl chloride plastic bags, net weight of each box is 20kg. Non-hazardous items can be transported in various ways, but should be kept away from direct sunlight, moisture and heat, and contact with chemicals.
Operators should wear dust masks during use to avoid inhaling dust and minimize long-term contact between skin and powder coating. Paint attached to the skin can be washed with soap.
| Specific gravity | 1.4~1.8g/cm’ (depending on the formula and color) |
| Particle size | Depending on the application, the standard type has an average particle size of 35~40 microns, less than 10 microns powder <10%, greater than 100 microns powder <0.5% |
| Storage stability | Polyester/Primid type powder coatings should be stored in a dry, ventilated room below 35°C, and avoid direct sunlight. If stored in an air-conditioned room, the powder must be stored at room temperature or the same (temperature) as the spraying equipment before use to avoid moisture. Under this condition, the powder can be stably stored for more than 12 months. If it is exceeded, it must be re-tested. If the result meets the requirements, it can still be used. |
| Test items | Inspection standard or method | Inspection index |
| Appearance | Visual inspection | Various board surface effects |
| Impact | GB/T 1732 | ≥50Kg·cm |
| Bending | GB/T 6742 | ≤2mm |
| Cupping | GB/T 9753 | ≥8mm |
| Hardness | GB/T 6739 | ≥H~2H |
| Adhesion | GB/T 9286 | Level 0 |
| Neutral salt spray resistance | GB/T 1771 | 500h; Scribed area: unidirectional rust ≤2.0mm; Unscribed area: no abnormality |
| Moisture and heat resistance | GB/T 1740 | 500h No abnormality |
| Artificial weather aging resistance | GB/T 1865 | 800h; Discoloration ≤2 level; Gloss loss ≤2 level |
| The above coating performance indicators may decrease slightly as the gloss decreases. | ||
| Spraying | This series of products are suitable for the following spraying methods: corona electrostatic spraying; friction electrostatic spraying; electrostatic fluidized bed spraying; fluidized bed hot dip coating. | |
| Coating thickness: Use between 40~150 microns, recommended film thickness is 50~80 microns. Average coverage: 10~12 square meters/kg, film thickness 60 microns (calculated based on 100% usage rate) | ||
| Curing conditions | 180℃/10 minutes is recommended, and it can also be designed according to user needs: 160C/15 minutes, 170℃/12 minutes, etc. | |
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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