Polyfluoro-rubber chemical-reagent-resistance special anti-corrosive coating

Abstract

The invention discloses a polyfluoro-rubber chemical-reagent-resistance special anti-corrosive coating, and belongs to the technical field of special coatings. The coating belongs to a bi-component system and is prepared from, by mass, 20-40 parts of polyfluoro-rubber, 0-1 part of a dispersing agent, 0-0.5 part of a wetting agent, 0-0.5 part of a defoaming agent, 0-0.5 part of a flatting agent, 0-2 parts of a rheological auxiliary agent, 2-15 parts of a macromolecular polymer, 2-15 parts of a ceramic compound, 1-5 parts of mica powder, 3-10 parts of wearproof and acid-proof powder, 1-10 partsof barium sulfate, 20-40 parts of a curing agent and the balance solvent. According to the coating, construction technologies such as spray-coating, brush-coating and roller-coating can be adopted, apaint film is compact, full, high in flexibility and wear resistance, and resistant to various chemical solvents, and the coating can be used in an environment of 250 DEG C or below for a long term.

Description

technical field [0001] The invention belongs to the technical field of special coatings, and relates to a preparation method of a special anti-corrosion coating of polyfluororubber resistant to chemical reagents. [0002] technical background [0003] At present, the leading desulfurization method in my country is limestone-gypsum wet flue gas desulfurization technology. It is also the most mature and most widely used high-efficiency desulfurization process, but in practical applications, the wet desulfurization process has a high removal efficiency for SO2 in flue gas, but the removal efficiency for SO3, the main component of corrosion in flue gas, is not high , about 20%. In addition, the desulfurized flue gas generally contains complex components such as dust, HF, HCl, NOx, water vapor, H2SO3 H2SO4, etc. These substances alternate acid and alkali, cold and heat, dry and wet, corrosion and wear coexist, so the desulfurization equipment Bearing a variety of physical, chemi...

AI Technical Summary

Problems solved by technology

However, if the flue gas temperature increases, the activity of titanium increases rapidly, and titanium can react violently with many substances at high temperatures, resulting in corrosion.

Therefore, when titanium plates are used as anti-corrosion materials, they should be used with caution after analyzing the actual flue gas components and condensation conditions of the project, and the cost is too high, which is difficult for ordinary customers to accept

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