Coating classification: epoxy resin coating

Core tip: epoxy resin was synthesized by Pierre castan of Switzerland and sogreenlee of America in 1930 In 1947, devoeand Reynolds of the United States first, and then shell obtained the patent production right of Ciba Corporation of Switzerland, and successively realized industrial production [1] Epoxy resin is widely used in coatings, adhesives, composites and other fields because of its excellent adhesion, adhesion, stability, chemical resistance, insulation and mechanical strength China began to develop epoxy resin in 1956, and in 1958 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 Paint House News: epoxy resin was synthesized by Pierre castan of Switzerland and sogreenlee of America in 1930 In 1947, devoeand Reynolds of the United States first, and then shell obtained the patent production right of Ciba Corporation of Switzerland, and successively realized industrial production [1] Epoxy resin is widely used in coatings, adhesives, composites and other fields because of its excellent adhesion, adhesion, stability, chemical resistance, insulation and mechanical strength China began to develop epoxy resin in 1956, and trial production was successful in 1958 Epoxy resin coating is one of the widely used protective coatings The coating formed by epoxy resin coating can not only shield the corrosive medium, but also passivate the protected metal and play the role of electrochemistry The coating formed by epoxy resin coating has excellent "wet" adhesion, which makes other coatings out of reach Therefore, epoxy coating has been a hot spot in the field of coating research The coating with epoxy resin as the main film-forming material is called epoxy resin coating, and the compound containing two or more epoxy groups belongs to epoxy resin Epoxy group is a ring composed of one oxygen atom and two carbon atoms It has high activity, which makes epoxy resin react with various curing agents to form a three-dimensional network structure polymer Characteristics of epoxy resin coating: good adhesion the excellent adhesion of epoxy resin coating is mainly determined by the molecular structure of epoxy resin and its curing reaction characteristics In the molecular structure of epoxy resin, there are polar groups such as epoxy end group, hydroxyl group and ether bond The existence of these groups makes the epoxy resin molecules produce electromagnetic adsorption or chemical bond with the adjacent interface Therefore, the coating film of epoxy resin can produce strong adhesion with the surface of metal, wood, concrete and other base materials The internal stress of epoxy coating is low in the process of cross-linking and curing In the process of film formation, many factors will lead to the internal stress of the film and cause the final defects of the film, especially the decrease of the adhesion of the film to the substrate The corrosion resistance is good after the epoxy coating is cured into a film, because the molecules contain stable benzene ring and ether bond, so it has good stability for chemical media, such as medium concentration of acid, alkali, salt and other media Because of the three-dimensional network structure formed after the curing of epoxy resin coating, it is also resistant to oil impregnation, and can also be widely used for anti-corrosion of the inner wall lining of oil tanks such as oil tankers and airplanes Compared with thermosetting phenolic resin coating, epoxy coating is hard due to its aromatic ring structure, easy to rotate due to its ether bond, and has a certain toughness, unlike phenolic resin, which is brittle (because its cross-linking distance is shorter than epoxy resin) The epoxy resin has a long cross-linking distance, which is convenient for internal rotation Because of its large molecular weight, the cross-linking distance is long 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,