A kind of environment-friendly gas-sensitive coating for volatile acid and preparation method thereof

Abstract

The invention relates to an environment-friendly gas-sensitive paint for volatile acids and a preparation method thereof, comprising the following components by mass: 50-100 parts of strong acid-resistant resin, 1-30 parts of special color-changing agent A, and auxiliary color-changing components 0.5-5 parts, 0-20 parts of filler, 0-20 parts of auxiliary agent, 0-300 parts of solvent; the special discoloration agent A is the substance obtained after compound B is treated with white carbon black. The invention utilizes the discoloration performance of the special color-changing agent A when it encounters acid gas, strengthens the color change through auxiliary color-changing components, and combines the reasonable compatibility of pigments, fillers, auxiliary agents, etc., to realize the preparation of gas-sensitive coatings for volatile acids. The invention has the characteristics of obvious discoloration, rapid discoloration, reversible discoloration and good compatibility, and is suitable for manufacturing, storing, transporting and the surface of devices using strong acids. Petroleum alkylation, fluorine chemical industry, ore flotation, pulp and paper industry, semiconductor industry and other manufacturing industries have good market demand prospects.

Description

technical field [0001] The invention relates to the development of a gas-sensitive coating for volatile acids, belonging to the field of comprehensive utilization of chemical products. Background technique [0002] Concentrated sulfuric acid, hydrofluoric acid, nitric acid, hydrochloric acid and other strong acids are widely used in chemical production such as petroleum alkylation, fluorine chemical industry, ore flotation, pulp and paper industry, semiconductor industry, etc., and have made great contributions to promoting the development of the national economy. huge contribution. At present, there are two traditional alkylation processes in the petrochemical industry, namely hydrofluoric acid method and sulfuric acid method. The hydrofluoric acid method uses hydrofluoric acid as a catalyst to synthesize industrial isooctane (ie, alkylated oil) from isobutane and butene. The prepared alkylate is a mixture of isoparaffins, not only has good anti-knock performance, the oct...

AI Technical Summary

Problems solved by technology

In the 1990s, my country developed a "hydrogen fluoride indicator paint", but compared with foreign products, there are problems such as inconspicuous discoloration, long discoloration time, irreversible discoloration (only one-time use), and the application is greatly limited.

At present, the acid warning paint used in China basically relies on imports, and there are problems such as high price and long delivery cycle.

Moreover, the current foreign products are solvent-based paints, which need to be diluted with solvent-based paints, which are not environmentally friendly and cannot achieve environmentally friendly coatings

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