Coating process: coating covering power test

Core tip: coating covering power test The ability of a coating to be evenly coated so that the underlying color on the surface of the coating is no longer present is called covering power There are two ways to express it, i.e to determine the minimum amount of coating required to cover the unit area (in g / ㎡) or to cover the bottom surface (in μ m) At present, the former method, the weight per unit area method (also known as the black and white grid method), is widely used to test the covering power in China The instrument is a 100 mm × 200 mm black and white glass plate, which is made of 25 mm & T Paint knowledge how about Akzo Nobel Powder Coating Recommended introduction: powder coating is a kind of coating with different form from general coating, which is in powder form It is a new type of coating, because of its own advantages and more and more known by people Let's introduce Akzo Nobel Powder coating Akzo Nobel Powder coating is a cost-effective coating solution, which can be applied to different kinds of products After the treatment of static electricity and fire baking, a tough and durable coating surface will be formed, with the least impact on the environment Since the introduction of this technology, powder coating has been able to continue to maintain the Coating home news: coating covering power test coating into a uniform coating, the ability to make the surface of the substrate no longer present is called covering power There are two ways to express it, i.e to determine the minimum amount of coating required to cover the unit area (in g / ㎡) or to cover the bottom surface (in μ m) At present, the former method, the weight per unit area method (also known as the black and white grid method), is widely used to test the covering power in China The instrument is a 100 mm × 200 mm black and white glass plate, which is composed of 25 mm × 25 mm black and white small squares Evenly apply the coating sample to the glass plate, and visually measure it under the astigmatism until the gray white grid can not be seen Weigh the amount of coating used, and then calculate according to the following formula: x-covering power, g / ㎡; w-total weight of coating sample and container, G; ω - total weight of remaining coating and container, G; s-painted area of black and white grid glass plate, C ㎡ This method is easy to operate, and it is also convenient to make black and white glass plate, but sometimes the end point is not observed accurately In addition, the leveling of the coating and the scratches of the operation time have a certain impact on the test results of the hiding power At present, the covering power tester is mainly used to measure the covering power The tester can measure the opacity (covering power) and whiteness based on the principle of standard color measurement, which is suitable for the classification of covering power of surfaces such as ceramics and anodized aluminum 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,