Pearlescent pigments in powder coatings application of the top ten to avoid the pit guide Common Misconceptions of Pearlescent Pigment Selection In powder coating, the selection of pearlescent pigment is crucial. Many enterprises tend to neglect the high temperature resistance and stability of pigment when selecting, which leads to discoloration or degradation of coating under high temperature environment. Therefore, when selecting, the thermal stability, weather resistance and compatibility with the substrate of the pigment must be considered. Second, the key point of pigment dispersion process Pigment dispersion process directly affects the uniformity and gloss of the coating. Common dispersion problems include pigment agglomeration, uneven dispersion and so on. In order to avoid these problems, it is recommended to use high shear dispersing equipment and strictly control the dispersing time and temperature. Third, the strategy of coating process optimization The optimization of coating process can not only improve the production efficiency, but also enhance the quality of coating. For example, by adjusting the viscosity, solid content and leveling of the coating, the defects of the coating, such as pinholes and orange peel, can be effectively reduced. IV. Tips for controlling pearlescent effect The control of pearlescent effect is a major difficulty in powder coatings. In order to achieve stable metallic luster and color texture, it is necessary to accurately control the amount of pigment added, the degree of dispersion and the thickness of the coating. In addition, the use of multi-angle detection equipment for real-time monitoring is also an effective means to ensure the consistency of pearlescent effect. V. Solutions to coating defects Coating defects such as blooming and color difference are often related to uneven dispersion of pigments and improper process parameters. By optimizing the dispersion process, adjusting the electrostatic spraying parameters, and strengthening the post-treatment of the coating, the occurrence of these defects can be effectively reduced. Suggestions for selection of high temperature resistant pigments Under the high temperature environment, ordinary pearlescent pigment is easy to be degraded, resulting in coating discoloration or failure. Therefore, when selecting the type, priority should be given to the pigment with excellent high temperature resistance performance, such as inorganic pigment or specially treated organic pigment. VII. Optimization of electrostatic spraying parameters Electrostatic spraying is a common coating method in powder coating. In order to obtain a uniform coating, it is necessary to optimize the parameters such as spraying voltage, gun distance and spraying speed. At the same time, regularly check the operating status of the equipment to ensure the stability of the spraying process. Eight, pigment dispersion process improvement In order to improve the uniformity of pigment dispersion, can use pre-dispersion technology or add dispersing additives. In addition, optimizing the maintenance and repair of dispersing equipment can effectively prolong the service life of the equipment and improve the dispersing effect. Nine, the application of multi-angle detection techniques Multi-angle detection is an important means to ensure the consistency of the pearlescent effect. By observing the reflection effect of the coating under different angles, defects in the coating, such as color difference, uneven gloss, etc., can be found and corrected in a timely manner. X. Implementation of full-process solutions From selection, dispersion process to coating inspection, the whole process solution is the key to ensure the quality of powder coating. By establishing a perfect quality control system and strengthening the monitoring and adjustment of process parameters, various application traps can be effectively avoided and stable coating results can be realized. Through the above ten pitfall avoidance guidelines, we hope to help you avoid common problems in the application of pearlescent pigments and improve the quality and stability of powder coatings.