Coating technology: significance and test method of electrophoretic coating re solubility

The key points are: the significance and test method of the re solubility of electrophoretic coatings Electrophoretic coating is a new type of environmental protection coating at present, which mainly uses water as solvent - the proportion of water in the working fluid of the coating production line is often more than 80%, without fire risk, environmental protection and health It has the advantages of convenient operation, uniform coating, complete coating, strong corrosion resistance and good chemical resistance Therefore, it is widely used in automobiles, motorcycles, home appliances, furniture And other industrial metals Paint knowledge | precautions for wall paint color selection Recommended introduction: when painting the wall, the owner sometimes has difficulty in choosing what color of the wall paint to paint In fact, there is no ugly color in the wall paint, only the disharmonious color matching The use of wall color contains the knowledge of health Too strong color will stimulate people's perception, make people have a sense of fidgety, affect people's mental health Grasp the basic principles of wall color and paint a colorful space 1、 Wall paint color selection notice 1 Light color is generally used for the top surface Light colors make people feel light, dark colors make people feel heavy Usually, the treatment of rooms is from top to bottom, from shallow to deep For example, the ceiling and walls of rooms are white and Home of coatings news: the significance and detection method of electrophoretic coating re solubility electrophoretic coating is a new type of environmental protection coating at present, mainly with water as the solvent - the proportion of water in the working fluid of the coating production line is often more than 80%, no fire risk, environmental protection and health It has the advantages of convenient operation, uniform coating, complete coating, strong corrosion resistance and good chemical resistance Therefore, it is widely used in automobiles, motorcycles, home appliances, furniture And other industrial metal parts of the protective coating However, in electrophoretic coating, pH value, solid content, ratio of pigment to base, penetration, neutralization equivalent, organic solvent content, and solubility And so on are some related parameters that affect the quality of electrophoretic coating Among them, the re solubility of electrophoretic coating mainly refers to that the wet film of electrophoretic coating on the coating can be re dissolved by bath solution and ultrafiltration, and the wet film of the electrophoretic coating can resist re dissolution The lower the detection value, the stronger the re solubility resistance of the electrophoretic coating Re solubility is also very important for the production of electrophoretic coating High re solubility will result in low coulomb efficiency, loss of electric energy and increase of electric cost The dissolved film will form a particle source, which will lead to the decline of film quality Similarly, high re solubility will make the film easy to be washed off in the post water washing section, and in serious cases, it may cause abnormal phenomena such as thin film, rough film, particles, speckles, exposed bottom, etc So do you know how to test the re solubility of electrophoretic coating? The following flying professionals will explain the test methods for the re solubility of electrophoretic coating: 1 Prepare the film sample of electrophoretic coating according to the relevant standard conditions 2 Disconnect the power supply, take out the test plate and wash it with pure water, then immerse 1 / 2 of the lower part of the sample plate in the stirred tank liquid directly, and use the stopwatch to count the time 3 After soaking for 10 minutes, take out the sample and wash it with pure water, then dry and solidify the sample according to the drying conditions specified in relevant standards 4 Visually check whether there is obvious difference in the appearance of the test plate, then use the thickness gauge to test the thickness of the upper and lower part of the paint film of the sample plate, measure at multiple points, calculate the arithmetic mean value, and record it on the book 5 Re solubility calculation: calculation formula: re solubility (%) = (m1-m2) / M1 × 100%, where: M1 is the average film thickness (μ m) of the upper part of the test plate without soaking M2 is the average film thickness (μ m) of the lower part of the test plate after immersion The above is the routine test method for the re solubility of electrophoretic coating, for your reference The specific and more detailed test method needs to be determined according to the actual needs 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,