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    Home > Coatings News > Paints and Coatings Market > Analysis of the main components of fluorocarbon coatings and the principle of corrosion protection

    Analysis of the main components of fluorocarbon coatings and the principle of corrosion protection

    • Last Update: 2020-12-28
    • Source: Internet
    • Author: User
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    Fluorocarbon coatings have been widely used in various fields such as construction, chemical industry, electrical and electronics industry, machinery industry, aerospace industry and household goods after decades of rapid development. After acrylic coatings, polyurethane coatings, silicone coatings and other high-performance coatings, the highest overall performance of the coating brand. At present, the application of a wide range of fluorocarbon coatings are PTFE, PVDF, PEVE and other three types., the main components of fluorocarbon coatings: 1, fluorocarbon resins: including natural resins and artificial resins, but also part of the main film-forming substances.2, fluorocarbon oil: including dry oil and semi-dry oil, is one of the main film-forming substances.3, pigments: including coloring pigments, body pigments and rust-proof pigments, the specific variety is quite a wide range, as a secondary film-forming substances.4, accessories: including drying agents, curing agents, plasticizers, moisture inhibitors. It is also an auxiliary film-forming substance.5, fluorocarbon thinners: including solvents and thinners, used to dissolve the above-mentioned substances and toner consistency, for auxiliary film-forming substances.3. Analysis of the anti-corrosion principle of fluorocarbon coatings:refers to the anti-corrosion of zinc-rich coatings, adding a large number of coatings, zinc particles between zinc particles, zinc particles and steel surface close contact, zinc potential is more negative than iron, so in the electrolyte solution zinc atoms easily lose electrons into anodes, iron is yin pole. Zinc is corroded due to the loss of electrons in the anode region, and is continuously protected by electrons on the steel surface in the cathode zone. In order for the coating film conduction to play the role of sacrificing anode, it is necessary that the whole coating must have good conductivity, so that the whole coating and steel substrate system form an electrochemical circuit, zinc-rich coating can play an electrochemical protection role.
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