Coating knowledge: development of fluorocarbon coating industry at home and abroad

Core tip: in 1938, DuPont company of the United States synthesized polytetrafluoroethylene resin and developed a "TEFLON" non stick coating It is to disperse polytetrafluoroethylene (PTFE) in the state of small particles in the solvent, and then sintered into a film at 360-380 ℃, the coating can be used at - 195-250 ℃ for a long time, its chemical resistance is more than all polymers, mainly used in non stick coating; Such as: non stick pot coating, polymerization reactor lining In the 1960s, elf ATO developed "kynar500" for 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 Coating House News: in 1938, DuPont company of the United States synthesized polytetrafluoroethylene resin and developed a "TEFLON" non stick coating It is to disperse polytetrafluoroethylene (PTFE) in the state of small particles in the solvent, and then sintered into a film at a high temperature of 360-380 ℃ The coating can be used at - 195-250 ℃ for a long time, and its chemical resistance exceeds all polymers, mainly used in non stick coating; Such as: non stick pot coating, polymerization reactor lining In the 1960s, elf ATO company developed the polyvinylidene fluoride (PVDF) fluorocarbon resin with the trademark of "kynar500", which was then applied in fluorocarbon coatings It has excellent weather resistance, water resistance, pollution resistance and chemical resistance, especially for the external decoration of buildings, it has advantages that other coatings can not compare However, PVDF resin is insoluble in common solvents, and the formation of the film requires high-temperature sintering at 230-250 ℃, so it can only be applied to the base materials of high-temperature resistant exterior wall decoration materials such as aluminum curtain wallboard, aluminum profile and color steel plate with fixed processing place and baking equipment, which limits its use In 1982, the company developed FEVE resin, which introduced soluble functional group, adhesive functional group, cross-linked curing functional group and rheological functional group on the basis of fluoroalkene It not only inherits all the excellent quality of fluororesin, but also has the ability to dissolve in aromatics, lipids, ketones and other conventional dissolves at room temperature Agent, crosslinking and curing at room temperature The application of the resin in the fluorocarbon coating has expanded the application field of fluorocarbon coating to the high temperature resistant PVC profiles, plastic steel profiles, glass fiber reinforced plastics, plexiglass and other organic materials; large steel plates and steel structures that cannot enter the oven; road and bridge structures that need to be constructed on site, building exterior walls; as well as non-ferrous metals, glass materials, ceramic products, stone and wood materials, etc In the late 1990s, waterborne fluorocarbon emulsion resin was successfully applied to fluorocarbon coatings Its high weatherability, water resistance, pollution resistance and chemical resistance are no inferior to solvent based fluorocarbon coatings; its environmental protection makes it easy to break through the environmental protection barriers of some European and American countries; its easy construction makes its cost of work and materials even lower than the same high-quality fluorocarbon coatings Waterborne fluorocarbon coatings have become the main direction of architectural coatings development With the progress of human beings and the development of science and technology, fluorocarbon coatings are also advancing At present, the scientific and technological achievements that have just come out and are still in the research stage include: hydrophilic self-cleaning anti pollution fluorocarbon coatings, fire retardant fluorocarbon coatings, wear-resistant lubricating fluorocarbon coatings, fluorescent fluorocarbon coatings, electrothermal fluorocarbon coatings and other functional fluorocarbon coatings; powder fluorocarbon coatings; waterborne wood fluorocarbon coatings; Nano fluorocarbon coating and so on At present, there are more than 20 fluorine resin manufacturers all over the world In 2000, the production capacity of fluororesin in the world was about 100000 tons, and in 2005, the production capacity steadily increased to 120000-140000 tons At present, the main fluorine resin manufacturers in the world are DuPont company, ICI company, atofina company, Asahi and Daikin company, etc., with annual production capacity ranging from 3000 tons to 20000 tons Domestic enterprises producing fluorine resin mainly include Shanghai sanaifu, Changshu Zhonghao, etc., and the production scale is growing From the comparison of domestic and foreign, the foreign fluorocarbon coating industry started earlier, the product process is more mature, the market operation is more standardized, the application experience is more rich, and the experimental data is more complete The typical representatives are: PPG, Daikin, Asahi and other domestic fluorocarbon coating industries started late, but developed rapidly In just over ten years, not only developed the "TEFLON" non stick coating and high-temperature baking PVDF coating that had been used for a long time abroad, but also successfully promoted FEVE Type Room Temperature Curable Fluorocarbon coating At the same time, it also firmly grasped the most current water-based environmental protection fluorocarbon coatings and various functional fluorocarbon coatings in the world Typical representatives include: fc-s series solvent based fluorocarbon coatings and fc-w series waterborne fluorocarbon coatings of Shanghai Hengfeng Fluorocarbon Materials Co., Ltd 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,