What method can deal with the surface activation of chemical plastic barrels

- Aug 17, 2020-

Users who have used chemical plastic barrels may know that surface activation will inevitably occur when they are used, so how should this problem be solved? Let’s get to know it together! The surface treatment of chemical plastic barrels mainly includes coating coating treatment and plating coating treatment. Generally, the crystallinity of plastics is large, the polarity is small or non-polar, and the surface energy is low, which will affect the adhesion of the coating. Chemical plastic barrels select corresponding layers in the surface treatment process, and continue to process them in the detailed application and treatment process. Because plastic is a non-conductive insulator, it is not possible to directly coat the surface of the plastic according to the standard of electroplating skills. Coating, so before the surface treatment, the necessary pre-treatment should be carried out to advance the adhesion of the coating coating and to provide the coating coating with a conductive underlayer with excellent adhesion. There are many ways to activate the surface of chemical plastic barrels, such as chemical oxidation, flame oxidation, solvent vapor etching and corona discharge oxidation. Among the most widely used is the chemical crystal oxidation treatment method. This method is commonly used for chromic acid treatment liquid. Its typical formula is 4.5% potassium dichromate, 8.0% water, and 87.5% concentrated sulfuric acid (above 96%).