Coating technology: quality inspection method of anti mildew coating

Core tip: the technical requirements of anti mould coating include two aspects: first, the physical performance index, the national standard GB/T 9756, the "synthetic resin emulsion interior wall coating" or other related decorative coatings quality standards; two, the mildew resistance performance index shall be GB/T according to the national standard 1741 test method for film mildew resistance (at present, the actual test cycle is generally 28 days) In addition, there are still some methods to test the mildew resistance of the coating, such as constant temperature and humidity test, mould chamber hanging test and field exposure test 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 Coating home information: the technical requirements of anti mould coating include two aspects: first, the physical performance index, the national standard GB/T 9756, the synthetic resin emulsion interior wall coating or other related decorative coatings quality standards; two is the mildew proof performance index, and the coating should be GB/T 1741 according to the national standard The test is carried out by the method of mould resistance test (at present, the actual test cycle is generally 28 days) In addition, there are still some methods to test the mildew resistance of the coating, such as constant temperature and humidity test, mould chamber hanging test and field exposure test Constant temperature and humidity test method put the test sample in the glass cabinet to spray the mold suspension, dry it for 10min after infecting the mold, then move the sample to the constant temperature and humidity room or the suspension box of the test room to keep it stable at 28 ℃± 1 ℃, and the relative humidity is 98% ± 1% Observe the mold growth on the sample, and the evaluation standard can be in accordance with the provisions of GB 1741 test method for film mildew resistance The general test period is 28 days Mold chamber hanging method test mold chamber hanging method test is to coat 3 / 4 of the surface area of the sample to be tested with coating sample, 1 / 4 of the surface area (generally the upper part of the sample) is not coated with sample, connect with the strain, and put it in the room with the temperature of 28-30 ℃ and relative humidity of 95%, regularly observe the mold growth of the sample, and the evaluation standard is the same as above The test takes 28 days In the field exposure test method, the sample coated with the tested anti mold coating is placed in the actual environment for inspection, or the field coating test is carried out in the cigarette factory, brewery, food processing factory and other places where the anti mold coating is required, and the surface condition is regularly observed Obviously, the most accurate results can be obtained by field test The technical requirements of antifungal coating products should also include toxicity requirements Although the antifungal performance is very good, the antifungal coating with high toxicity still has no practical value Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,