A corrosion-resistant insulation board

Abstract

The invention provides an anti-corrosion heat preserving board. The anti-corrosion heat preserving board comprises a polystyrene foam board, a polyethylene core board, a strengthening layer and a protective layer. A jag is formed in the reverse side of the polystyrene foam board, the polyethylene core board is arranged on the surface of the polystyrene foam board, the strengthening layer is arranged on the surface of the polyethylene core board, the protective layer adheres to the surface of the strengthening layer and is a 2Cr13 steel plate, a PTFE film adheres to the surface of the 2Cr13 steel plate, and a protective film capable of being torn is arranged on the surface of the PTFE film. The service life of the anti-corrosion heat preserving board is long due to three-layer protection, the PTFE film is arranged on the surface of the heat preserving board, and therefore the anti-corrosion heat preserving board has the good heat resistance, the good anti-corrosion performance and the good electrical insulation performance; the heat-treated 2Cr13 steel plate is high in plasticity, impact load bearing capacity and anti-corrosion performance at the room temperature; the polyethylene core board is additionally arranged between the strengthening layer and the polystyrene foam board, corrosion of most acid and alkali can be resisted, buffer is formed between the strengthening layer and the polystyrene foam board, and therefore the hollowing phenomenon cannot be caused.

Description

technical field [0001] The invention belongs to the technical field of thermal insulation boards, and in particular relates to a corrosion-resistant thermal insulation board. Background technique [0002] In the industrial production process of the petrochemical industry, in some reaction chambers, it is often exposed to some corrosive media, such as brine solution, sulfuric acid, nitric acid, various organic acids and various corrosive gases or liquids. The inner wall of the chamber has a strong corrosion effect, so the inner wall of the reaction chamber is generally pasted with an insulating board with a protective layer on the surface. However, after practice, the surface of the existing insulating board bears little impact load and has poor corrosion resistance. Improve. Contents of the invention [0003] In order to solve the above problems, the invention discloses a corrosion-resistant thermal insulation board, which has high plasticity, strong impact load bearing c...

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Problems solved by technology

[0002] In the industrial production process of the petrochemical industry, some reaction chambers are often exposed to some corrosive media, such as brine solution, sulfuric acid, nitric acid, various organic acids, and various corrosive gases or liquids. The inner wall of the chamber has a strong corrosion effect, so the inner wall of the reaction chamber is generally pasted with an insulation board with a protective layer on the surface, but after practice, the surface of the existing insulation board bears little impact load and has poor corrosion resistance. Improve

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