Fluorocarbon paint
close The earliest "fluorocarbon coating" was actually born in 1938, which is known as DuPont's Teflon coating, namely, PTFE, FEP and other copolymers. This kind of material has unique and excellent heat resistance (180 ℃ - 260 ℃), low temperature resistance (- 200 ℃), self-lubricating and chemical stability, and is known as the "corrosion resistant, never stick Teflon". Fluorocarbon paint is generally divided into three fluorine and four fluorine, and four fluorine has higher anti-corrosion performance. Due to the extremely high liquefaction temperature required during use and poor dispersion of pigments, it has been only used in non stick pot, medical, aviation and other fields, and has not entered the construction field. It was not until 1965, when Pennwalt Company of the United States successfully developed the fluorocarbon coating for building with polyvinylidene fluoride (PVDF) (trademark Kynar500) as the base material, that the fluorocarbon coating realized commercialization, and people saw the application prospect of fluorocarbon coating in the construction field. Tens of thousands of buildings around the world were shining under the protection of (PVDF) fluorocarbon coating. As this kind of coating is still baking coating, although the baking temperature is much lower than that of PTFE, about 230 ℃, it can not be used on site and needs factory processing, which also restricts the further promotion of fluorocarbon coating. It was not until 1982 that Asahi Nippon developed fluoroolefin vinyl ether copolymer (FEVE) to create a room temperature curing fluororesin that can be dissolved in aromatic, lipid and ketone solvents at room temperature. It overcame the shortcoming that the original fluorocarbon coating cannot be cured at room temperature, realized the ideal of coating fluorocarbon coating on the construction site, and greatly expanded the application field of fluorocarbon coating.