A self-healing anti-corrosion coating for exhaust gas recovery pipeline

Abstract

The present invention relates to the anticorrosion field of chemical structures. Aiming at the problem that the anticorrosion coatings in the prior art lack anticorrosion durability, a self-repairing anticorrosion coating for exhaust gas recovery pipelines is disclosed. The self-repairing anticorrosion coating includes the following parts by weight Composition of raw materials: 54-60 parts of methylsiloxane modified epoxy resin latex solution, 6-10 parts of self-repairing slow-release ball, 4-6 parts of plasticizer and 4-8 parts of filler; The concentration of the siloxane-modified epoxy resin latex solution is 60-70wt%; the self-healing slow-release balls include copolymer-mesoporous SiO 2 Shell and Support on Copolymer‑Mesoporous SiO 2 A self-healing agent within the shell. The invention introduces the self-repairing slow-release ball, and releases the self-repairing agent in the self-repairing slow-release ball in time under the trigger condition to improve the repair of the base material of the anti-corrosion coating, greatly improving the service life and anti-corrosion effect of the anti-corrosion coating , significantly reducing maintenance costs.

Description

technical field

[0001] The invention relates to the field of anticorrosion of chemical structures, in particular to a self-repairing anticorrosion coating for waste gas recovery pipelines. Background technique

[0002] In industry, when processing stainless steel pickling sludge and other raw materials to extract nickel-chromium alloys, a large amount of SO2 is produced. 2 , H + The flue gas with moisture will seriously corrode the pipes and equipment, and the dust removal system. Various methods are used to thicken the steel plate and use stainless steel. These phenomena will not only greatly increase maintenance costs, but also cause exhaust gas leakage, pollute the environment, and pose a threat to biological health. Since the flue gas discharged in the pipeline is the exhaust gas produced just after sintering, it has a high residual temperature, which requires the exhaust pipeline and the inner wall coating of the pipeline to have high corrosion resistance in addition ...