General knowledge of coating: Study on epoxy antirust paint

Core tip: in order to enhance the performance of antirust paint, the epoxy antirust primer mainly used now contains zinc phosphate and iron oxide red antirust pigment at the same time Epoxy zinc phosphate antirust paint can be used not only for steel surface, but also for galvanized parts Epoxy zinc phosphate antirust paint is mainly used for intermediate paint of epoxy zinc rich primer on container paint Epoxy zinc phosphate antirust paint has better antirust effect when zinc phosphate and zinc oxide are used together in the formulation It should be noted that since zinc phosphate is slightly soluble in water, the antirust paint containing zinc phosphate pigment has better antirust performance than that containing only iron red Paint agent, top 10 Chinese wall paint brands Recommended introduction: interior wall paint and exterior wall paint can achieve beautiful, clean and pleasant effects, but the effects in different environments are different, so the color of the paint will be different There are ten brands of Chinese paint, ten brands of global paint, ten brands of Chinese wall paint, and ten brands of Chinese paint, Famous trademark of Chinese paint and coating In private rooms, most of us choose according to our own personality, personal hobbies and living habits The younger generation will choose the interior wall paint with rich colors and bright colors, while the older ones will have some working experience Paint Home News: in order to enhance the performance of antirust paint, the epoxy antirust primer mainly used now contains zinc phosphate and iron oxide red antirust pigment at the same time Epoxy zinc phosphate antirust paint can be used not only for steel surface, but also for galvanized parts Epoxy zinc phosphate antirust paint is mainly used for intermediate paint of epoxy zinc rich primer on container paint Epoxy zinc phosphate antirust paint has better antirust effect when zinc phosphate and zinc oxide are used together in the formulation It should be noted that zinc phosphate is slightly soluble in water, so the antirust paint containing zinc phosphate pigment, although its antirust performance is better than the antirust paint only containing iron red, can not be used in water, otherwise it will cause blistering and other problems The epoxy micaceous iron oxide antirust paint is a very important heavy-duty anticorrosive paint It can also be used in alkyd resin, chlorinated rubber and other coatings, so a variety of antirust paints have been developed The appearance of epoxy micaceous iron antirust paint, instead of traditional micaceous iron antirust paint such as alkyd and chlorinated rubber, has been applied to modern heavy-duty anti-corrosion steel structures For the outer wall of steel box girder of Nanpu Bridge in Shanghai, the epoxy micaceous iron is used as the intermediate paint on the epoxy zinc rich primer Epoxy micaceous iron antirust paint has always been an important antirust paint and intermediate paint in foreign countries In many countries, bridges, locomotives and power stations, it is stipulated to use epoxy micaceous iron as intermediate paint Micaceous iron oxide is called micaceous iron for short Its chemical composition is a-Fe2O3, which is in sheet structure Its thickness is only a few microns, and its diameter is 10-100 μ M it has excellent acid and alkali resistance, high temperature resistance and no toxicity Micaceous iron in the paint film and the base material parallel overlapping arrangement, can effectively prevent the penetration of corrosive medium It has strong reflection ability to sunlight and slows down the aging of the coating, so it has good antirust performance and can improve the weather resistance when used in the top coat The use of micaceous iron pigment in epoxy paint further reduces the shrinkage of epoxy paint Due to the rough surface of the epoxy micaceous iron antirust paint, which can reflect the sunlight without the limitation of recoating interval, it is especially suitable for the intermediate paint as the heavy-duty anti-corrosion coating system Therefore, the main function of the epoxy micaceous iron intermediate paint is to use it as the intermediate paint on inorganic and organic zinc rich primer and zinc spraying aluminum spraying surface The construction method of the epoxy antirust paint is a two-component paint When using, mix the main paint evenly, then add the curing agent into the main paint, mix evenly, and use it after 20 minutes of curing The construction methods such as brush coating, roll coating or spraying shall be used If the viscosity of the prepared paint is high, the epoxy diluent shall be used to adjust it to the construction viscosity The prepared paint should be used up within 6 hours to avoid gelatinization Use the low temperature curing agent when the temperature is 5 ~ 35 ℃, or the construction cannot be carried out Base material treatment: carry out construction according to the requirements of 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