Coating process: Determination of water content of coating diluent
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Last Update: 2020-04-03
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Source: Internet
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Author: User
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Core tip: the water content of the paint diluent shall not exceed the specified standard, otherwise, the paint film will turn white and pinholes will occur, so the water content of the paint diluent shall be strictly controlled Test method for water content of paint diluent: 1 Qualitative measurement Under the condition of constant temperature and humidity, measure 25ml diluent in 100ml measuring cylinder with grinding plug, and then add 25ml ny-200 solvent oil Plug the measuring cylinder with a grinding plug and shake it vigorously for 1min Under the astigmatism line, it is qualified if there is no turbidity or stratification If there is turbidity, or the water content of raw materials is too high or the raw materials are stored and transported 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: the water content of paint diluent shall not exceed the specified standard, otherwise the paint film will be white and pinholes will occur, so the water content of paint diluent shall be strictly controlled Test method for water content of paint diluent: 1 Qualitative measurement: under constant temperature and humidity, measure 25ml diluent in 100ml measuring cylinder with grinding plug, and then add 25mlny-200 solvent oil Plug the measuring cylinder with a grinding plug and shake it vigorously for 1min Under the astigmatism line, it is qualified if there is no turbidity or stratification If there is turbidity, or because the water content of raw materials is too high or there is water leakage in the process of storage and transportation, it should be dried before reuse 2 Quantitative determination of gas chromatography this method uses polymer porous microspheres as stationary phase, because it has the smallest retention value for water, and the peak shape of water is steep, and the symmetry is good The external standard method was used to quantify the water peak area or peak height 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,
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