Products and equipment used in acid, alkali and other corrosive media must be protected with chemically resistant anti-corrosion coatings. There are many varieties of this type of paint , how to choose?
Although anti-corrosion coatings have corrosion resistance to corrosive media, they also have limitations. For example, phenolic paint has good chemical resistance, but it is hard and brittle; anaerobic paint has strong adhesion, good alkali resistance and solvent resistance, but acid resistance is not good. Not very satisfactory, perchlorethylene paint has good chemical corrosion resistance and weather resistance, but poor adhesion to metal; vinyl paint has good chemical resistance and toughness, but is easily invaded by solvents; asphalt paint has water resistance, acid resistance It has good corrosion resistance, but the paint film is not strong. Therefore, it is necessary to overcome the shortcomings of a single resin and use a modified resin with comprehensive properties to prepare anti-corrosion coatings. For example, polyester paint and urushiol lacquer have comprehensive anti-corrosion and other properties, but the disadvantage is that they are more expensive. To use anti-corrosion paint, it is necessary to weigh its advantages and disadvantages first. If it is permitted, choose to use it. In order to achieve satisfactory results, in addition to choosing an appropriate anti-corrosion paint, it is also necessary to pay attention to the surface treatment of the painted part and the choice of primer. , the correct construction method and the thickness of the paint film.
Cheryl Roberts