General knowledge of coating: Research on new conductive anticorrosive coating

It is suggested that conductive anticorrosive coatings are widely used, especially in the fields of electronics, architecture, aerospace, petrochemical and military industries The preparation of the conductive anticorrosive coating on the metal substrate can effectively protect the metal surface from corrosion, and make the metal have good conductivity, which can protect the metal, reduce the loss and save energy It is an inevitable trend for the development of coatings industry to study multifunctional coatings Taking electrolytic copper and zinc in metallurgical industry as examples, electrolytic copper bath solution usually contains 20% (mass fraction) H 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 Home of coatings: conductive anticorrosive coatings are widely used, especially in the electronic industry, construction industry, aerospace, petrochemical and military industries, etc The preparation of the conductive anticorrosive coating on the metal substrate can effectively protect the metal surface from corrosion, and make the metal have good conductivity, which can protect the metal, reduce the loss and save energy It is an inevitable trend for the development of coatings industry to study multifunctional coatings Taking electrolytic copper and zinc in metallurgical industry as examples, electrolytic copper bath solution usually contains 20% (mass fraction) H 2SO 4 Due to the high temperature, the sulfuric acid medium and the acid mist produced by it have strong corrosiveness; and the whole process of electrolytic zinc has strong acid solution and acid mist corroding production equipment and workshop The conductive rod widely used in the electrolytic process is copper rod In this humid acid environment, the copper rod is easy to be corroded, and its surface will generate a layer of copper green, which seriously affects the copper Because of its conductivity, it needs to be replaced regularly, resulting in the loss of resources The conductive anticorrosive coating prepared in this paper can not only keep good conductivity of metal matrix, but also slow down the corrosion of metal matrix in acid environment, and play a role in protecting metal, reducing loss and saving energy Because copper is more expensive, aluminum is cheaper and its conductivity is better, so this paper chooses aluminum as the matrix material Because copper is more expensive, aluminum is cheaper, and its conductivity is better, so in this paper, aluminum is selected as the base material to prepare conductive anticorrosive coating At present, conductive coatings can be divided into two categories according to their composition and conductive mechanism: structural conductive coatings and mixed conductive coatings At present, the blending conductive coating is the main conductive coating Its formulation generally includes resin, conductive filler, solvent or other additives Epoxy resin is one of the most widely used resins in conductive coatings It has the advantages of good adhesion (good adhesion with metal, plastic, glass, etc.), good chemical resistance, salt fog resistance, and good mechanical properties Silver coated glass beads have good conductivity, low price, and can make up for the shortcomings of easy migration of silver In this paper, modified epoxy resin is used as binder and silver coated glass bead as conductive filler to prepare conductive anticorrosive coating The reference formula of the conductive anticorrosive coating is as follows: the amount of raw materials (mass fraction /%) modified epoxy resin 25% curing agent 5% silver coated glass bead 70% (silver content is 30%), the solvent is a mixed solution of n-butanol and xylene, the drying temperature is 60 ° C, and the drying time is 2H The conductive anticorrosive coating obtained by this process is milky white, the coating is smooth, the resistivity is 0.03 ~ 0.05 Ω· cm, and the adhesion reaches level 2 After 25-30 days of corrosion test, the resistivity of the coating changed little The coating has the advantages of low temperature drying, convenient operation, good adhesion with metal matrix, good corrosion resistance, and the difference between its resistivity and metal matrix is less than 100m Ω· cm When it is used in the protection of metal in the conductive environment, it can slow down the corrosion of metal and protect the metal on the premise of ensuring the good conductivity of the coating 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,