General knowledge of coating: production and application of anti mildew coating

Key tips: (1) formula design The antifungal coating consists of antifungal fungicide, binder, pigment, filler, auxiliary agent, etc The task of formulation design is to make the anti mold coating not only have qualified anti mold and anti algae performance, but also have excellent decorative performance Of course, it must also have enough storage stability, construction, and production operability Nowadays, the excellent anti mildew coating should have the basic performance of the conventional architectural coating, which is non-toxic, no unpleasant smell, pleasant color and long-lasting efficacy, making it an environment-friendly decorative functional coating (2 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 news: (1) formulation design anti mold coating consists of anti mold fungicide, binder, pigment and filler, additives, etc The task of formulation design is to make the anti mold coating not only have qualified anti mold and anti algae performance, but also have excellent decorative performance Of course, it must also have enough storage stability, construction, and production operability Nowadays, the excellent anti mildew coating should have the basic performance of the conventional architectural coating, which is non-toxic, no unpleasant smell, pleasant color and long-lasting efficacy, making it an environment-friendly decorative functional coating (2) Production process of antifungal coating: firstly, water and additives related to pigment dispersion shall be mixed evenly in the mixing tank, and solid water-soluble additives shall be converted into solution in advance or dissolved at this stage Then add mildew inhibitor and pigment and filler, and fully mix to make pigment and filler completely wet The mixture is then fed to a dispersing device, such as a sanding machine or a three roller grinder, for grinding, and the fineness is controlled by QC The slurry is transferred to the paint mixing tank, and then the base material, defoamer, film-forming agent, rheological modifier, pH regulator and other additives are added, and the white anti mildew coating is prepared by continuous mixing If you want to make a color coating, you should add a toner paste to the white coating to make a toner Finally, the finished product is filtered and packaged The product shall be stored in a ventilated and dry warehouse to prevent sun exposure, rain, heat source and freezing (3) the technical requirements of quality control methods for mildew proofing coating include two aspects, one is the index of decoration performance, which can implement the national standard GB / T 9756 "synthetic resin emulsion interior wall coating"; two is the functional index, which is the mildew proof performance, which can be carried out according to the national standard GB 1741 "paint film mould resistance test" or choose one of the following methods a In the wet greenhouse test, the test sample is placed in a glass kitchen for spraying mold suspension, and then dried for 10 minutes after being infected with mold Then, the sample is moved to a constant temperature and humidity chamber or a test chamber for hanging The temperature in the chamber is maintained at (28 ± 1) ℃, and the relative humidity is (98 ± 1)% Observe the mould growth on the sample and evaluate the grade (the rating standard can be in accordance with the provisions of gbl74l test method for film mildew resistance) The general test period is 28d b R0bert asmiih designed the hanging method of mould chamber The 3 / 4 surface area of the sample was coated with coating sample, and the 1 / 4 surface area (generally the upper part of the sample) was not coated with the sample The sample was connected with the strain and placed in the room with the temperature of 28-30 ℃ and the relative humidity of 95% The mould growth of the sample was observed regularly and the rating was evaluated (the rating standard is the same as above) The test takes 28 days c The purpose of this test is to evaluate the durability of coatings Before the mold resistance test, the test sample of the coating to be tested shall be subject to the aging treatment simulating the natural environment and climate, and the artificial aging time shall be determined according to the requirements Then, according to the wet greenhouse method or mould chamber hanging method d In the field exposure test, the samples coated with the tested anti mold coating are placed in the actual environment, such as the jungle, hot and humid areas, etc for inspection, or in the cigarette factory, brewery, food processing factory and other places where the anti mold coating is required for field coating test, and the surface conditions are regularly observed Obviously, the most accurate results can be obtained by field test The technical requirements of antifungal coating products should also include the toxicity requirements, because the antifungal coating with high toxicity still has no practical value Toxicity test should include acute oral toxicity test, skin irritation test, eye irritation test and mutagenicity test 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,