For the drying degree of the coating, the actual drying effect can be tested by referring to the content of the coating surface drying and solid drying measurement methods in Chapter 3. The next coat is generally applied after the previous coat has actually dried. The surface drying of various coatings, the hard drying time can be roughly seen in the table. When each coating is painted, there must be a certain interval between coatings, which is not only related to the type of coating and the specific coating, but also related to the temperature, humidity and other climatic conditions during construction. The coating interval can be extended appropriately in winter. Appropriately shortened in summer. Similarly, the drying time of the paint will be prolonged or even not completely dry in winter, and the drying time in summer will be shortened.
The good coating interval here refers to the most suitable coating interval time when the coating film has good performance. For some varieties, such as single-component chlorinated rubber , perchlorethylene and acrylic paints that rely on solvent volatilization , there is no limit , and only the shortest painting interval is specified. For some coatings, after the surface of the coating is sanded with sandpaper, the longest coating interval can be extended appropriately. These situations should be considered according to the specific conditions of the construction site. However, in order to achieve a good coating effect , it should be applied within a good coating interval .
After the coating film is dry, attention should be paid to the maintenance of the coating film . Generally, the coating film can be and the coated object can be put into use.
