The role of epoxy cloud iron intermediate paint in iron and steel industry
The long-term anti-corrosion engineering of bridge steel structure is a systematic engineering, which is directly related to the safe operation and service life of the bridge.Corrosion and protection of steel structure has become an important subject in the fields of material science, coating industry and steel structure manufacturing industry, which has attracted great attention.At present, there are many anticorrosive methods for steel structures, such as hot dip zinc coating, cold zinc coating or powder coating, applied current or sacrificial anode protection. Different anticorrosive methods have different applications.Among them, coating anticorrosive coating method by isolating the steel structure from the outside corrosion medium to achieve the purpose of anticorrosive, the most widely used.The anticorrosive use of steel coating is often matched with the use of anticorrosive primer coating, anticorrosive intermediate paint coating and anticorrosive top paint coating.Anticorrosive intermediate paint plays a role in the transition and connection of bottom and surface coating, and also plays a role in resisting ultraviolet radiation, anti-permeability and so on.The most commonly used antiseptic intermediate paint is epoxy iron cloud intermediate paint.
Epoxy ferric oxide intermediate paint is composed of epoxy resin, mica ferric oxide, antirust pigment, curing agent, additives and solvents, etc. It is widely used as intermediate paint or sealing layer for high-performance anticorrosive coatings. It can be used as primer on galvanized steel and aluminum alloy surface, or directly coated on steel surface after surface treatment.Epoxy iron cloud coatings have been used as protective coatings for steel structures for a hundred years. Since the 19th century, they have been widely used as intermediate coatings for long-acting protective coating systems for steel structures of Bridges. So far, there have been hundreds of large-scale engineering cases.The history of preparing coatings with mica iron oxide in the world can be traced back to the painting of Eiffel Tower in Paris, France in 1889. It has been more than 120 years so far. Sydney Harbour Bridge in Australia, Tower Bridge in London, Humler Suspend Bridge, Wuppertal Railway in Germany,They are also protected by coatings prepared with iron cloud as antirust pigment.
The epoxy resin in the epoxy ferric cloud intermediate paint component has the characteristics of strong adhesion, small shrinkage, good matching and excellent chemical resistance.
