Due to the development of bottom and surface coating materials, vacuum electroplating of vehicle logo equipment has been continuously improved, continuous, and large-scale. Vacuum plating has entered the stage of industrial production, and has penetrated into various scientific fields. It has become one of the surface treatment technologies that have been adopted competitively in the world since the 1980s. It is widely used in plating parts of various substrates such as metal, wood, paper, and plastic, gradually demonstrating the unique role of vacuum plating in applications. The selection and application of coatings are important factors affecting the quality of decorative vacuum coating.
What are the coatings used for vacuum electroplating of car logos? How to improve the coating technology in the application of these coatings in actual production? Below, we will focus on discussing this. In decorative vacuum coating, relying on comprehensive coating technology can achieve coatings with strong wear resistance, good adhesion, and high brightness.
The function and requirements of coatings, decorative vacuum plating coatings are generally divided into two types: primer and topcoat. In order to meet the different technical requirements of the product, the primer and topcoat can be applied, or color coatings, protective coatings, etc. can be applied on top of the topcoat. The main functions of these coatings are:
Improve the adhesion of the film layer. Using the same coating method, applying a base coating on a plastic substrate and then vacuum coating can improve the adhesion of the film layer. Reduce the surface roughness of the plated parts and improve the brightness. Generally, there are micro unevenness on the surface of plated parts, and the smoothness of coatings with varying thickness can fill in the defects on the surface of the plated parts and achieve mirror flatness on the surface.
It can protect the metal film layer. The vacuum coating layer is generally only 100nm, and its wear resistance and discoloration resistance are poor. After applying the surface coating, the coating layer does not come into direct contact with the outside world, which can provide protection for the coating layer.
The requirements for the bottom coating in vacuum electroplating car logos: good contact performance and high adhesion between the plated parts and the coating layer, small difference in thermal expansion coefficient, no reaction, and good leveling performance. Has good vacuum performance. After the primer is cured, there is less bleeding, less thermal stress, and good heat resistance.
The film forming performance is good, and the coating has good properties such as density, coverage ability, solvent resistance, and light resistance. Good compatibility with the topcoat. Due to the extremely thin and porous coating layer, it is required that the solvents and diluents of the primer and topcoat have good compatibility. Good coating performance. Good leveling performance, appropriate viscosity, and short curing time.
The requirement for vacuum plating on the surface coating is to have good contact performance with the coating layer. It must have a certain degree of compatibility with the primer; Excellent film forming and coating performance; Having appropriate mechanical strength; Good moisture resistance, solvent resistance, and corrosion resistance. Strong anti-aging performance.