Construction requirements

(1) To fully utilize the characteristics of powder coating and extend the service life of the coating, the surface of the coated material should first undergo strict surface pretreatment

(2) When spraying, the object to be coated must be completely grounded to improve the spraying efficiency of powder coating.

(3) For coatings with significant surface defects, conductive putty should be applied to ensure the smoothness and flatness of the coating

(4) The sprayed object needs to be heated and cured. The curing conditions are based on the technical specifications of the powder product, but the curing temperature and time must be fully guaranteed to avoid quality accidents caused by insufficient curing.

(5) Check immediately after powder coating. If defects are found, they should be dealt with promptly. If defects are found after curing, their range is very small, only partially unaffected. The surface decoration of the coated object can be repaired by diluting it with the same color powder and acetone. If the range is large, it will also affect the surface quality. After sanding with sandpaper, spray again or remove the coating with paint remover and spray again.

(6) The recycled powder must be sieved to remove impurities, and then mixed with new powder in a certain proportion.

(7) The powder hopper, powder spraying room, and recycling system should avoid contamination from powders of different colors, so they must be cleaned every time the color is changed.

storage method

1. Keep away from sources of fire, avoid direct sunlight, and store in a well ventilated area below 35 ℃.

2. Avoid storing in places that are easily contaminated by water, organic solvents, oils, and other substances.

3. After using powder coating, do not expose it to the air at will, and always cover or tightly seal the bag to prevent debris from entering.

4. Avoid long-term skin contact. Powder adhering to the skin should be washed with soap and water. Do not use solvents. Painting site safety

5. The equipment used for painting operations must be well grounded to eliminate static electricity.

6. Avoid unnecessary discharge of the coating machine

7. The concentration of floating dust in the powder spraying room should be controlled below the safe concentration as much as possible to avoid the danger of dust ignition and explosion.

prospect

Under the promotion of environmental laws and regulations, limiting VOC emissions will enable faster promotion and application of powder coatings. If the coating line is compared and comprehensively evaluated with solvent based and water-based coatings, powder coatings will replace other coatings. Painting. The development trend of future powder coating equipment is as follows.

(1) In order to comprehensively evaluate the coating performance, coating cost, coating cost, and equipment investment return of powder coatings, it is necessary to jointly organize research with the entire industry related to powder coatings.

(2) In terms of powder coating equipment, it is necessary to develop and design electrostatic fluidized bed coating equipment suitable for large-area coating, and develop and research cleaning methods for color changing.

(3) In terms of powder coating technology, it is expected to further improve the coating efficiency of electrostatic coating, develop rapid color changing methods and powder spraying room exhaust gas recovery technology.