Methanol-resistant, static-conducting and anti-corrosive paint

Abstract

The invention discloses a methanol-resistant electrostatic conductive anticorrosive coating, which consists of the following raw materials according to the weight ratio: 18 to 33 of epoxy resin, 8 to 20 of modified arylated alkyl amine curing agent, 18 to 35 of electrostatic conductive filler, 1 to 30 of pigment, 1 to 30 of filler, 2 to 4 of auxiliary agent, and 10 to 30 of diluting agent, wherein the epoxy resin consists of an epoxy resin E44 and an epoxy resin E51 according to the weight ratio of 2-3:5; and the electrostatic conductive filler consists of conductive mica powder and conductive zinc oxide according to the weight ratio of 5:1-2. A final product has good electrostatic conductivity, and the resistivity on the surface of a paint film is between 10<6> and 10<7>omega; the final product has good corrosion resistance, can not seep particles when storing methanol for a long time, and has no pollution to the methanol; and the final product has good stability of electric conductivity, and the resistivity on the surface of the paint film has no obvious change through the soaking of the methanol.

Description

technical field [0001] The invention relates to a paint, in particular to a methanol-resistant, static-conductive, anti-corrosion paint. Background technique [0002] Methanol is easy to generate static electricity during loading, unloading, transportation, and storage. Therefore, anti-static and anti-corrosion coatings should be used on the inner wall of the storage tank. The static conductive coatings used in the prior art include ordinary epoxy, polyurethane, phenolic, etc., because the space structure is not compact enough, it has been proved by experiments that methanol molecules can easily pass through, and the coating film is easy to swell and foam in the methanol environment for a long time , and eventually fall off. On the other hand, the static conductive performance of the conductive coating in the prior art has poor stability. As time goes on, the static conductive performance decreases, and the static charge cannot be leaked in time. Once the static charge accu...

AI Technical Summary

Problems solved by technology

The static conductive coatings used in the prior art include ordinary epoxy, polyurethane, phenolic, etc., because the space structure is not compact enough, it has been proved by experiments that methanol molecules can easily pass through, and the coating film is easy to swell and foam in the methanol environment for a long time , and eventually fall off

On the other hand, the static conductive performance of the conductive coating in the prior art has poor stability. As time goes on, the static conductive performance decreases, and the static charge cannot be leaked in time. Once the static charge accumulates to exceed the breakdown field strength of the medium, it will It will lead to spark discharge, resulting in fire and explosion accidents

[0003] Moreover, the conductivity and whiteness of the conductive filler used in the preparation of conductive coatings are closely related to the content of deposited metal oxides. Therefore, when the content of conductive powder is low, the whiteness of the conductive powder is high, but the static conductivity generally decreases accordingly.

Therefore, it is difficult to have both the electrostatic conductivity and the depth of the paint color

Images