Davo PM Primid Polyester
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Product Description
This product series is a thermosetting powder coating made by melt-extruding and grinding saturated polyester resin with excellent weather resistance, combined with Primid curing agent, along with necessary pigments, fillers, and additives. It boasts outstanding physical, chemical, and decorative properties. Depending on requirements, this product series can be formulated into products with varying curing temperatures (150℃ to 200℃), different textures (smooth, sand-textured, or draped), and different gloss levels (from 20% to 95%).
Storage conditions
Under conditions where the temperature is below 30℃ and the relative humidity is below 60%, the shelf life is 6 months. If the shelf life exceeds 6 months, the product must undergo re-inspection before it can be used.
Powder curing requirements
180℃ for 15 minutes (workpiece temperature); 200℃ for 10 minutes (workpiece temperature); for matte finishes, extend the time by 5 minutes—refer to the product’s test report for details.
Operation Process and Parameters
- Common steel, zinc phosphate treatment
- Galvanized steel sheet, iron phosphate treatment
- Aluminum material – Chromate treatment
Before the above processing steps, the substrate must be thoroughly cleaned to remove any oil and grease, and then dried. The drying temperature should not exceed 200℃ to avoid damaging the operational process and film parameters, which could result in the final powder coating performance failing to meet the required standards.
Before spraying castings (especially those that have been poured) and hot-dip galvanized parts, it is essential to heat them at high temperature to remove internal moisture and gases, thus preventing bubble formation. Please notify us in advance so that we can make appropriate adjustments to the formulation.
Note: Customers should periodically inspect the quality of operating procedures and parameters according to their supplier’s requirements.
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