Energy-saving environment-friendly inorganic zinc-rich primer

Abstract

The invention discloses an energy-saving environment-friendly inorganic zinc-rich primer, which is prepared from a component A and a component B respectively placed. The component A is prepared from the components in percentage by mass: 2.0 to 8.0 percent of hydrochloric acid, 20 to 30 percent of polyvinyl butyral adhesive solution, and 65 to 75 percent of distilled water, wherein the polyvinyl butyral adhesive solution is a mixture prepared from mixing polyvinyl butyral and an alcohol substance; the component B is prepared from the components in percentage by mass: 7 to 16 percent of tetraethoxysilane, 1.5 to 4.0 percent of powdery anti-settling agent, and 80 to 90 percent of zinc powder; the mass ratio of the component A to the component B is 1 to (3 to 5). According to the inorganic zinc-rich primer provided by the invention, the hydrochloric acid liquor, the polyvinyl butyral isobutyl alcohol liquor, the distilled water and the like are physically mixed to form the component A, sothat tetraethoxysilane hydrolysate synthesis is removed, and the problems of cumbersome technological operation, time consumption, energy consumption, lack of end point control scientificity and easiness in gelling deterioration are avoided; without an organic solvent, safety and environmental protection are realized; the energy-saving environment-friendly inorganic zinc-rich primer can adapt to alow surface treatment coating occasion, and other relevant construction performances are remarkably improved.

Description

technical field [0001] The invention relates to the field of preparation of an inorganic zinc-rich primer, in particular to the preparation of an energy-saving and environment-friendly inorganic zinc-rich primer coating with stable process, strong practicability and excellent performance. Background technique [0002] Inorganic zinc-rich primers are divided into water-based inorganic zinc-rich primers and alcohol-soluble inorganic zinc-rich primers. They are used as anti-corrosion supporting coatings for large steel structures. They have been widely promoted as mature classic anti-corrosion solutions and have been widely promoted by engineering design, construction and other parties. recognized. It has already become a well-known anti-corrosion product for traditional steel structures. [0003] The traditional alcohol-soluble inorganic zinc-rich primer uses a mixture of polyvinyl butyral glue, anti-settling agent, zinc powder and other mixtures as component B, and ethyl ort...

AI Technical Summary

Problems solved by technology

[0004] 1. The tetraethyl orthosilicate hydrolyzate as component A needs to be synthesized in the reactor according to the process. The synthesis process is not only cumbersome to operate but also wastes a lot of water, electricity and energy;

[0005] 2. The endpoint control of tetraethyl orthosilicate hydrolyzate as component A cannot accurately reflect the quality of the product and is prone to gelation and deterioration during storage;

[0007] 4. The non-volatile content of the product is difficult to meet the requirements of JT / T722-2008 Highway Bridge Steel Structure Anticorrosion Coating Technical Conditions Standard (≥75%)