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Ultrathin chemical toughened glass and preparation method thereof

A glass strengthening and chemical technology, applied in the field of ultra-thin chemical strengthening glass and its preparation, can solve the problems of long time consumption of chemical strengthening, low ion mobility, environmental pollution, etc., to improve the effect of chemical strengthening, promote ion exchange, improve Effect of ion exchange rate

Active Publication Date: 2018-10-19
WUJIANG GOLDEN GLASS TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since ion exchange is thermal diffusion and the ion mobility is relatively low, the chemical strengthening method takes a long time (generally a minimum of ten hours). On the other hand, it needs to consume a large amount of molten salt, which is easy to cause environmental pollution. Therefore, it is necessary to improve the chemical strengthening process, improve the efficiency of glass chemical strengthening, and reduce the pollution to the environment

Method used

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  • Ultrathin chemical toughened glass and preparation method thereof
  • Ultrathin chemical toughened glass and preparation method thereof
  • Ultrathin chemical toughened glass and preparation method thereof

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specific Embodiment approach

[0028] In order to better illustrate the purpose, technical solutions and advantages of the present invention, the present invention will be further described below in conjunction with specific examples. Those skilled in the art should understand that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present invention.

[0029] In the examples, the experimental methods used are conventional methods unless otherwise specified, and the materials and reagents used are commercially available unless otherwise specified.

[0030] The thickness of the glass sample prepared in the present invention is below 1.5 mm.

Embodiment 1

[0032] The preparation method of the ultra-thin chemically strengthened glass described in this embodiment comprises the following steps:

[0033] (1) prepare ion exchange solution;

[0034] Potassium nitrate, potassium silicate, rubidium nitrate and cesium nitrate are dissolved in ultrapure water to obtain an ion exchange solution, in which K + The concentration is 30mol / L, Rb + The concentration is 2.5mol / L, CS + The concentration is 3.0mol / L, and the molar ratio of potassium nitrate and potassium silicate is set as 1:0.002, 1:0.005, 1:0.01, 1:0.02 and 1:0.04;

[0035] (2) After cutting and polishing the glass, use acetone and ethanol to clean the glass surface and dry it;

[0036] (3) Soak the dried glass in the ion exchange solution, and place it in a microwave hydrothermal instrument for ion exchange treatment; the microwave hydrothermal temperature is 340° C., and the ion exchange time is 5 hours;

[0037] (4) After the ion exchange is completed, cool to room tempera...

Embodiment 2

[0042] The preparation method of the ultra-thin chemically strengthened glass described in this embodiment comprises the following steps:

[0043] (1) prepare ion exchange solution;

[0044] Potassium nitrate, potassium silicate, rubidium nitrate and cesium nitrate are dissolved in ultrapure water to obtain an ion exchange solution, in which K + The concentration is 36mol / L, Rb + The concentration is 3mol / L, CS + The concentration is 2.0mol / L, and the molar ratio of potassium nitrate to potassium silicate is 1:0.02;

[0045] (2) After cutting and polishing the glass, use acetone and ethanol to clean the glass surface and dry it;

[0046] (3) Soak the dried glass in the ion exchange solution, and place it in a microwave hydrothermal instrument for ion exchange treatment; the microwave hydrothermal temperature is 320° C., and the ion exchange time is 8 hours;

[0047] (4) After the ion exchange is completed, cool to room temperature, take out the glass sample, ultrasonically...

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Abstract

The invention discloses ultrathin chemical toughened glass and a preparation method thereof. The chemical toughened glass is obtained by immersing a glass sample into a microwave hydrothermal environment of an ion exchange solution for carrying out ion exchange treatment, wherein the ion exchange solution is a water solution prepared from potassium nitrate, potassium silicate, rubidium nitrate andcesium nitrate; in the ion exchange solution, the concentration of K<+> is 27 to 40 mol / L, the concentration of Rb<+> is 0.5 to 4 mol / L and the concentration of CS<+> is 1.5 to 4.5 mol / L; the mol ratio of the potassium nitrate to the potassium silicate is 1 to (0.002 to 0.05); the microwave hydrothermal temperature is 300 DEG C to 350 DEG C and the ion exchange time is 4 to 10 h. Compared with amolten-salt growth method, relatively less pollution and energy source wastes are generated; the stress depth of the prepared chemical toughened glass reaches 45 mum or more and the surface stress strength reaches 700 MPa or more; the chemical toughened glass has good light transparency.

Description

technical field [0001] The invention relates to the technical field of strengthened glass, in particular to an ultra-thin chemically strengthened glass and a preparation method thereof. Background technique [0002] Ultra-thin glass usually refers to glass with a thickness below 1.5mm. At present, ultra-thin glass has been widely used in the field of electronic information display, as the protective glass of display devices such as smartphones and tablet computers, but these electronic products fall when used or carried, causing the glass to break, so ultra-thin glass needs to be strengthened . The introduction of surface compressive stress on the glass surface can effectively improve its strength, and the introduction of surface compressive stress can be achieved by physical strengthening and chemical strengthening. The physical strengthening method can be divided into gas medium strengthening method, liquid medium strengthening method, particle strengthening method and m...

Claims

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Application Information

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IPC IPC(8): C03C21/00C03C3/091
CPCC03C3/091C03C21/002
Inventor 肖坚伟张坚华吴从真林俊明郑意君
Owner WUJIANG GOLDEN GLASS TECH
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