2021-9-15 09:31| 发布者: steelfu4mo| 查看: 457| 评论: 0 |原作者: 佛山万庆物资
[Foshan Wanqing Materials] What are the common factors that affect the color difference of black color coating board?
Common factors affecting the color difference of the black color coating board
01 Coating thickness
The coating thickness is closely related to the application environment.The color of substrate, the thickness of coating and other factors change, must be fully considered in the process of coating color adjustment.
02 Solvent volatilization rate
The volatilization of the solvent affects the surface luster of the coating and the directional arrangement of the pigment, thus affecting the color phase.
03 The hydrophilic nature of the solvent
In the high humidity environment, if a drastic temperature change is involved, in the process of solvent volatilization, the coating surface appears in temperature difference due to solvent volatilization, resulting in a thin layer of water mist on the coating surface, resulting in white coating and color difference.
04 Uniformity of the coating
Different pigments have different color saturation due to the deployment, and the same color is due to different construction methods, different operation habits
The surface of the same plate produces color spots or causes the thickness difference between different plates, which affects the color difference of the coating.
Common factors affecting the gloss of the black color coating board
The quality of black color coating board is not only related to the raw material substrate, the production process plays a vital role in the quality of finished products, the gloss of color coating board is affected by the baking process and other factors.
Although the surface gloss of the black color coating board mainly depends on the coating itself, the baking process, the viscosity of the coating, the film thickness and the roughness of the substrate are also the main factors that determine the burnish of the coating surface.
The test results show that the PMT and the coating gloss have a negative correlation, the higher the temperature, the lower the gloss, but the baking parameters have less influence on the product gloss.
In order to control the environmental harm caused by the volatile solvent gas in the curing process of coating curing, the exhaust gas from the baking oven is introduced into the incinerator for combustion and transformed into harmless water and carbon dioxide. The heat released by the combustion continues to be used to heat the fresh air.
The gloss of black color coating board is one of the important factors to investigate the quality of products, and will also cause a certain degree of impact on the appearance of the product, so we must grasp the control of each link in the production process.