Product Description:
JJ polyethylene powder coating is made of polyethylene resin, pigments, fillers, compatibilizers, and functional additives. These coatings have excellent properties such as adhesion, corrosion resistance, chemical stability, electrical insulation, and low-temperature resistance.
Application of Powder Coating:
This coatings can be used to cover surfaces of various specialty chemical equipment, refrigeration equipment, fire equipment, baskets, industrial pipelines, etc.
Powder Coatings Properties:
| Dry fluidity: | fluidization floating ≥20% |
| Non-volatile content: | ≥99.5% |
| Particle size distribution: | ≤300um |
| Specific gravity: | 0.91-0.95 (varies by different colors) |
| Melt index: | 5-50 g/10min (2.16kg, 190℃) (it is depending on the workpiece to be coated and the process). |
Storage:
To ensure proper storage, keep the coatings in a well-ventilated, dry indoor area with a temperature below 35°C. Stay away from fire source.
Quality guarantee period: two years from the date of production.
After the expiration date, retesting should be conducted. If they pass the test, they can still be used. It is also recommended to use the powder on a first-in, first-out basis.
Package: Composite kraft paper bags, 25kg/bag.
Instructions of Powder Coating:
Before applying the coating, the surface of the substrate should be pre-treated. This can be achieved by degreasing using high temperature or solvents. Alternatively, chemical or sandblasting methods can be used to remove rust. After pre-treatment, the substrate surface should be neutral.
The preheating temperature of the workpiece can reach up to 250-350°C (adjustable based on the thermal capacity of the workpiece, such as, the metal thickness).
Immerse the coating in a fluidized bed for 4-8 seconds (adjust according to the thickness and shape of the metal).
Plasticize at 180-250°C for 0-5 minutes (heating the plasticization process helps in achieving a smooth coating).
Cooling: Allow natural cooling or use air cooling.
Health and Safety:
Powder coatings are non-toxic products, but inhalation of dust should be avoided during use. It is recommended for operators to wear appropriate dust masks and goggles.
If possible, prolonged skin contact with the powder coating should be avoided. We suggest installing an edge exhaust fan above the fluidized bed.
Precautions:
To achieve optimal adhesion, it is recommended to perform phosphating or chromating treatment on the substrate after degreasing and rust removal.
Overheating can cause aging and discoloration of the coating film. However, if the temperature is too low, it may result in defects such as thin film and roughness. Therefore, the optimal heating temperature should be determined through testing based on the customer's metal thickness and coating facility.
Workpiece design: Sharp edges should be grounded, welding should be gapless, and the metal thickness and wire diameter inside the workpiece should be close.
This product is not recommended for post-processing (coating deformed parts).
Like all polymer powders, especially under flowing conditions, if the powder coating is exposed to a high-temperature source, it may ignite or burn.
