Synthesis of high-molar ratio potassium silicate adhesive and aqueous anticorrosive paint composition

Abstract

The synthesis of high-molar ratio potassium silicate adhesive includes adding water soluble silica sol to low-molar ratio potassium silicate solution, adding small amount of silane as blocking agent and adhesion reinforcer, adding proper stabilizer, and adding organic polymer emulsion to improve the filming property of the adhesive. One kind of anticorrosive paint composition obtained through compounding the adhesive and zinc powder is also disclosed.

Description

technical field [0001] The invention relates to a synthesis method of a high molar ratio potassium silicate binder and a coating composition using it as an active substance, belonging to the technical field of chemical compositions. Background technique [0002] There are many reports on the manufacture of coatings with inorganic silicates. Some use low molar ratio sodium silicate, and some use lithium silicate with a molar ratio of 4.8:1. U.S. Patent 4162169 uses high molar ratio potassium silicate. mixture. This patent describes that under the state of stirring speed controlled at 3000-5000r / min and forming a vortex, the silicon dioxide hydrogel solution is added dropwise to the potassium silicate with a low molar ratio, so that the silica gel solution in the transparent solution is finally formed. The molar ratio of silicon to potassium oxide reaches 5.3:1, and the silicon dioxide hydrogel used in the reaction is in the form of powder, which needs to be made into a 35% a...

AI Technical Summary

Problems solved by technology

[0003] The problem in this patent is that the high molar ratio potassium silicate binder has poor storage stability, and the zinc-rich coating made of this binder has low viscosity, poor thick coatability, and stric