In the early stage of powder coating development, it was mainly used for metal corrosion protection. With the continuous progress of powder coating production and application technology, the strengthening of environmental protection awareness and regulations in various countries around the world, the application range of powder coatings has continued to expand, and the decorative and beautifying effects of powder coatings have also become more and more popular. People attach great importance to it, while the assembly line processing and assembly of modern enterprises (such as manufacturers of refrigerators, air conditioners, instruments and meters, metal doors and windows, aluminum profiles, electromechanical equipment, etc.) require highly stable internal and external quality of painted products, and consistent coating colors between batches. important requirements of customers.
Powder coatings generally atomize electrostatic powder coatings under the action of compressed air to be fine and uniform, and are evenly adsorbed on the surface of metal workpieces by virtue of the high-voltage electric field, and then solidified at high temperature to form a film. Among them, the curing time and baking temperature are the most influential factors on the color difference of the finished product.
For example, the curing device such as gas furnace has moderate production cost and is suitable for coating workpieces of individual enterprises. However, there are nitrogen oxides in the baking process of gas furnace, which will cause serious yellowing of the powder coating after curing, which will cause serious yellowing to the powder coating. Producers are in great trouble.
The chromatic aberratIon Meter can monitor the influence of baking temperature and curing time on the color difference.
The relationship between the data of color change and the curing time and baking temperature can be recorded by the instrument, and the influence of curing time and baking temperature on the color difference can be understood, so as to solve the color difference problem of the finished product.
Each powder coating has its own curing characteristic curve, which can achieve complete curing within a certain temperature and time range. The color spectrometer can record the color information and color difference value of the finished product, which is convenient for everyone to monitor the color difference of the coating color.
