The methods to improve the smoothness of coatings can start from three aspects: optimization of coating formula, improvement of construction process, and post-treatment technology. The following are specific measures:
1. Optimization of coating formula
Selecting appropriate coating components: Fine coating particle size can improve the smoothness and glossiness of the coating, reduce particle protrusion and orange peel phenomenon. Reasonable particle size distribution of coatings can effectively improve the hardness and scratch resistance of coatings.
Adding leveling or smoothing agents: Leveling agents can reduce the surface tension of coatings, improve leveling properties, and make the coating surface smoother. The new nano smoothing agent has smaller particle size and dispersibility, which can reduce the generation of bubbles and particles, thereby improving the smoothness and uniformity of the coating.
2. Construction process improvement
Optimize construction parameters: Control the thickness, spraying speed, and spraying distance of the coating to ensure uniform coating thickness, moderate spraying speed, and reasonable spraying distance, which can achieve good leveling performance.
Pre treated substrate: Before coating, ensure that the surface of the substrate is clean and free of dust, oil stains, or oxides. The surface of the substrate can be treated by spraying, sandblasting, chemical treatment, and other methods.
3. Post processing technology
Mechanical polishing: Using mechanical grinding tools such as sandpaper, grinding wheels, and grinders to remove surface irregularities and improve the flatness and smoothness of the coating.
Media sandblasting: using a beam of media such as glass beads, sand or plastic particles to smooth the surface, improve roughness and porosity.
Chemical treatment: Using methods such as chemical polishing or laser treatment to remove surface oxides and dirt, while improving the flatness and smoothness of the coating.
Post coating treatment: After the coating is cured, the smoothness and glossiness of the coating can be further improved through methods such as grinding and polishing.
Through the above methods, the smoothness of the coating can be effectively improved, and its appearance quality and functionality can be enhanced.