Resin type: Choose a resin with high gloss properties as the base material, which is the basis for achieving high gloss coating.
Formula adjustment: Optimize the gloss of the coating by adjusting the proportion of ingredients in the formula, such as resin, curing agent, solvent, additive, etc. For example, increasing the amount of curing agent can improve the gloss of the coating, but too much curing agent may cause the coating to be too brittle, so it is necessary to find the best ratio.
2. Optimize the construction process
Coating environment: Ensure that the coating environment is clean and dry, and avoid dust, oil and other impurities from contaminating the coating and affecting the gloss.
Coating method: Use appropriate coating methods, such as spraying, brushing or roller coating, to ensure that the coating is uniform and smooth. Spraying usually achieves higher gloss because it can form a thinner coating and the coating is more uniform.
Drying conditions: Control the drying conditions of the coating, such as temperature, humidity, and drying time. Appropriate drying conditions help the coating form a smooth and dense surface, thereby improving gloss.
3. Control coating thickness and uniformity
Coating thickness: Too thick a coating may lead to a decrease in gloss, because too thick a coating is prone to sagging, orange peel, and other phenomena. Therefore, it is necessary to control the thickness of the coating within an appropriate range.
Coating uniformity: Ensure that the coating is evenly distributed to avoid missing coating, uneven thickness, and other phenomena. A uniform coating can reflect more light, thereby improving gloss.
4. Use gloss enhancer
The role of gloss enhancer: Gloss enhancer can fill the tiny depressions and pores on the surface of the coating, making the coating surface smoother and flatter, thereby improving gloss.
Choose a suitable gloss enhancer: Choose a suitable gloss enhancer according to the specific requirements and construction conditions of the coating. For example, for a coating that requires high gloss, a gloss enhancer with a strong filling effect and good leveling can be selected.
5. Subsequent treatment and maintenance
Polishing and grinding: After the coating is dry, proper polishing and grinding can be performed to remove minor flaws and unevenness on the coating surface and further improve the glossiness.
Regular maintenance: Clean and maintain the coating regularly to avoid stains, scratches and other damage to the coating surface and maintain the high glossiness of the coating.
To achieve the high gloss coating effect of water-based two-component polyurethane paint, it is necessary to comprehensively consider and implement multiple aspects such as resin and formula selection, construction process optimization, coating thickness and uniformity control, gloss enhancer use, and subsequent treatment and maintenance.
