A kind of plain glass, strengthened glass and preparation method

Abstract

The invention discloses a plain glass, the thickness range of the plain glass is 0.4mm-2.0mm, the transmittance range of 550nm wavelength light to the plain glass is 86%-92.2%, and the refraction of the plain glass is The coefficient range is 1.48-1.54, and the alkali metal oxide content in the plain glass is 11mol%-22mol%, wherein, the oxide content of Na is 5mol%-18mol%, and the oxide content of Al is 7mol%-16mol%. Aiming at the technical problem that the mechanical properties of the existing strengthened glass need to be improved, by rationally designing the content ratio of the components in the plain glass, the components can play a synergistic effect and cooperate with each other, so that the plain glass obtained has a higher The advantages of high refractive index, high 550nm wavelength light transmittance and good chemical strengthening effect have also promoted the research and application of chemically strengthened glass. The invention also discloses strengthened glass prepared from the plain glass and a preparation method of the strengthened glass.

Description

technical field [0001] The invention relates to the technical field of glass production, in particular to plain glass, strengthened glass and a preparation method. Background technique [0002] Chemically strengthened glass is currently used in mobile phones, media players, and other terminals due to its high transparency, high strength, and abrasion resistance. The high strength of chemically strengthened glass is achieved through ion exchange. The principle is: the smaller ions in the glass can be replaced with the larger ions in the salt bath at high temperature. Strong compressive stress, thus showing higher strength. [0003] However, in the ion exchange process, the salt bath will dilute the larger ions with the increase of the smaller ions being exchanged, and continuing to use the same salt bath will reduce the compressive stress of the glass; in addition, the shallow surface of the glass is larger. The ion concentration is too concentrated, and the enriched large ...

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Problems solved by technology

This will inevitably lead to uneven strength distribution of the compressive stress layer of the final strengthened glass.

[0004] In short, so far, whether it is physical toughening or chemical strengthening, whether it is one-time strengthening or multiple strengthening, the stress distribution or the concentration of the exchanged ions in the single-layer compressive stress layer formed on the glass surface is along the The inward direction of the glass surface decreases sharply, so the compressive stress layer does not change much in the depth direction, so the overall strength of the glass cannot be improved

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