Outdoor Indoor Red Texture Electrostatic Polyester Powder Coating

Luster increases when matte powder is mixed with high-gloss powders or if the curing temperature is too low or time is insufficient. Solutions include cleaning before production and testing the furnace temperature to ensure proper curing.

Color changes may occur due to residual pretreatment liquid, excessive baking time/temperature (causing yellowing), mixing other powders, or pigments/resins not resistant to high heat. Improvements include optimizing pre-treatment, strictly following curing parameters, strengthening site sanitation, and using qualified powder coatings.

Shrinkage holes are caused by inadequate pre-treatment with oil residue, oil/water in compressed air, dust/impurity contamination, or polluted powder. To resolve this, strengthen pretreatment control, regularly check and drain oil/water from air tanks, and thoroughly clean the site and drying channel.

Pores and pinholes occur due to unclean workpiece surfaces, insufficient degreasing/derusting, thick conductive putty not fully dried, spray gun too close/high voltage causing breakdown, volatile gases in the drying channel, or coating being too thick/uncured. Fixes include strengthening surface treatment, improving pre-treatment, extending baking time, adjusting spraying parameters, cleaning the drying tunnel air, and controlling film thickness/curing time.

Coating detachment is typically caused by poor base material quality, improper pre-treatment, or insufficient/excessive curing temperature and time. Solutions involve improving pre-treatment and determining the appropriate curing temperature and duration.