Coating technology: production method of test panel for multicolor coating

Core tips: 1 Test conditions of test panel for multicolor coating inspection The experimental temperature is 25 ± 1 ℃, and the relative humidity is 60% ~ 70% 2 Requirements for test sample of colorful coating test panel: Asbestos cement board can be selected The water absorption of the Board shall not exceed 21% of the weight, the average density shall not be less than 167g / cm2, the thickness shall be 3-4mm, and the storage time shall be more than 15 days (from the production date), so as to ensure the stability of the board The test plate shall be pretreated Water sandpaper will Which is the price of Dajin diatom mud Recommended brief introduction: which is the price of Dajin diatom mud? How to buy genuine diatom mud? Guangdong diatom mud agent suggests placing a basin of cold water in the air conditioning room, so that the diatom mud wall can breathe effectively The feature of the breathing wall is obvious When the indoor air is dry, the diatom mud wall will release the absorbed water quickly Put it out to help regulate the indoor dry humidity It is suggested to place a basin of cold water in the air conditioning room, so that the wall of diatom mud can breathe effectively The feature of the wall that can breathe is obvious When the indoor air is relatively dry, the wall of diatom mud will absorb the water Paint Home News: 1 Test conditions of test panel for multi color paint test: the test temperature is 25 ± 1 ℃, relative humidity is 60% ~ 70% 2 Requirements for test panel for multi color paint test: asbestos cement board can be selected, the water absorption of the Board shall not exceed 21% of the weight, the average density shall not be less than 167 g / cm 2, the thickness shall be 3-4mm, and the storage time shall be 15 D above (from the production date), to ensure the stability of the board The test plate shall be pretreated Polish the smooth surface with abrasive paper, remove the floating ash on the surface, immerse in water for several hours, make the pH value of the plate about 10, and finally dry it for standby The size and quantity of the test plate are listed in Table 1 There are three processes in the process of plate making The bottom and middle coating are applied by the method of coating, and the 1.5-inch shading pen is used for painting One undercoat and two intermediate coats The interval between the first intermediate coat and the second intermediate coat is 24h After the intermediate coat is completed, the test plate shall be stored for 24h under the test environment conditions After the film is completely dry, the surface coating shall be sprayed, and the performance test can only be carried out after the coating is cured for 5 days Table 1 test panel size and quantity performance index test panel number (piece) test panel size (mm) adhesion 1 150 × 70 wood resistance 3 150 × 70 alkali resistance 3 150 × 70 washability 3 430xl70 paint home is focused on coating, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, Decoration knowledge and effect drawing of fireproof coating,