Glass strengthening liquid as well as preparation method and application thereof

Abstract

The invention relates to glass strengthening liquid as well as a preparation method and application thereof. The glass strengthening liquid comprises the following components in percentage by mass: 0.8%-15% of an alkaline reagent, 0.05%-0.5% of a surfactant, 0.1%-1% of a chelating agent, 0.5%-5% of an auxiliary agent and 78.5%-98.55% of water, the auxiliary agent is selected from a borate compound and / or a polyol compound. The alkaline reagent can react with silicon dioxide in the glass to achieve the purpose of eliminating or passivating microcracks; the borate and / or polyhydric alcohol auxiliaries can reduce the damage rate of hydroxyl ions to a new surface layer, reduce the scratch ratio of the glass and improve the impact strength of the glass; the surfactant can increase the permeability and dispersity of the chemical polishing solution, so that the possibility of deposition of chemical polishing products on the glass surface is reduced; the chelating agent can avoid the influence of water quality on the strengthening result. In addition, hydrofluoric acid and concentrated sulfuric acid do not need to be used, harm to the human body and the environment is avoided, and operation is safe.

Description

technical field [0001] The invention relates to the technical field of glass strengthening, in particular to a glass strengthening liquid and a preparation method and application thereof. Background technique [0002] At present, electronic products such as tablet computers and mobile phones are pursuing lightness and thinness, and the glass cover plate is getting thinner and thinner. In order to reduce drop damage, the strength of the glass cover plate is required to be high enough. [0003] Glass is a typical brittle material, the main component is silicate double salt. There are many factors that affect the strength of glass, among which the existence of surface micro-cracks has the greatest impact on the actual strength of glass. Specifically, micro-cracks will occur in glass after cutting, CNC and polishing. In addition, the ion exchange in the chemical toughening process will also make the microcracks have a tendency to expand, resulting in a decrease in the impact s...

AI Technical Summary

Problems solved by technology

However, hydrofluoric acid is toxic, and concentrated sulfuric acid is highly corrosive, which can adversely affect the health of workers

(2) Use alkaline agents (such as strong bases), basic additives (such as weak bases) and reinforcing agents (silicates) to chemically polish the glass. Compared with hydrofluoric acid polishing, this method is harmless to the environment , and basically has no effect on the human body, but if the content of alkaline reagents is low, the impact strength of the glass will be improved relatively little; The surface layer will cause a small amount or a large amount of silicon-oxygen bonds to break in the new surface layer, which may cause scratches. After the silicon-oxygen bonds are broken, the impact strength of the product will decrease, which is the opposite of the goal of improving the impact strength of the product.

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