Coating process: Test Method of coating corrosion resistance

It is suggested that the coating corrosion mainly includes the corrosion caused by natural medium and the corrosion caused by industrial medium Natural media include air, water, soil and so on The corrosion caused by natural media is widespread Industrial media are produced in the process of industrial production, such as acid, alkali, salt and various organic matters The corrosion caused by natural media is more serious Coating plays a role in protecting the coating from corrosion It is often exposed to various corrosive environments and eroded by corrosive media from nature and industry The corrosion resistance of the coating is mainly determined by the structure of the coating, as well as the thickness and matching of the coating Application scope and advantages of roller ceramic coating Recommended introduction: the surface of ceramic rubber plate used for roller ceramic coating is cast into durable rubber plate by hundreds of independent small ceramic pieces Each ceramic piece has raised characteristics Under general conveyor belt pressure, thousands of unique cast bumps can produce positive traction, prevent slipping and extend the service life of conveyor belt roller At the same time, the bottom layer adopts high-quality rubber, which has strong elasticity and can play a good impact resistance role The scope of application of roller ceramic coating is one three six 83857180 (the same as V) 1 Roller coating in extremely harsh working environment 2 The belt joint is not suitable for fixing with iron buckle; 3 It is suitable for leather Home of coatings: coating corrosion mainly includes the corrosion caused by natural media and the corrosion caused by industrial media Natural media include air, water, soil and so on The corrosion caused by natural media is widespread Industrial media are produced in the process of industrial production, such as acid, alkali, salt and various organic matters The corrosion caused by natural media is more serious Coating plays a role in protecting the coating from corrosion It is often exposed to various corrosive environments and eroded by corrosive media from nature and industry The corrosion resistance of the coating is mainly determined by the structure of the coating At the same time, it has a great relationship with the coating thickness, supporting system and construction management quality Due to the ever-changing corrosion conditions and the different materials and application range of various coatings, it is difficult to evaluate the corrosion resistance of the coating The corrosion resistance is one of the most complex topics in the research and production of the coating The main methods to test the corrosion resistance of coating are as follows: 1) observe the whole or part of the coating, observe the damage process and corrosion of the coating for a long time in the actual use process, so as to determine the corrosion resistance of the coating, but this method involves a large area, takes a long time, and is difficult to achieve 2) In the simulation test of hanging piece, the coating is made into a sample instead of the physical simulation test This method is objective, but the test cycle is still very long, for example, the specified test antirust performance time is up to 2 years Some heavy-duty anti-corrosion systems have been tested for more than 8 years 3) Laboratory simulation accelerated test, including salt spray test, damp heat test, water resistance test, sulfur dioxide resistance test, etc., is the most commonly used method at present, with short test cycle and high efficiency, but only relative and limited conclusions can be obtained It is only comparable for the same type of coating products, but not for the evaluation of different systems of coating Because the corrosion in the actual environment is the result of the comprehensive action of many factors, the simulation test results sometimes have a certain gap with the actual situation It is feasible to use this method to control the quality of the products, but at the same time, several tests are needed to compare with each other to evaluate the corrosion resistance of the coating with its comprehensive performance At present, more accurate simulation test methods are still being studied at home and abroad 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,