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Composition and methods for chemically strengthening glass, and chemically strengthened glass

A technology for strengthening glass and composition, applied in the fields of chemically strengthened glass and chemically strengthened glass composition, can solve the problems of long time for strengthening potassium nitrate, low production efficiency, etc. Strengthen the effect of time

Active Publication Date: 2020-01-07
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main component of molten salt for chemically strengthening glass is potassium nitrate, and the strengthening time of potassium nitrate is long and the production efficiency is low

Method used

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  • Composition and methods for chemically strengthening glass, and chemically strengthened glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] This example is used to illustrate the composition for chemically strengthening glass and the method for chemically strengthening glass of the present disclosure.

[0033] The aluminosilicate glass is processed into small pieces of glass of 80×40×0.55 mm. The composition includes 100 parts by weight of potassium sulfate and 33.3 parts by weight of lithium sulfate.

[0034] Using the composition for chemical strengthening, the method for chemical strengthening includes the following steps:

[0035] (1) Add the prepared composition into the strengthening furnace, and heat it at a temperature of 500°C until it is completely melted;

[0036] (2) preheating the glass;

[0037] (3) Put the preheated glass into molten salt for chemical strengthening, and the strengthening time is 80 minutes;

[0038] (4) Wash and dry the strengthened glass after cooling.

Embodiment 2

[0040] The aluminosilicate glass is processed into small pieces of glass of 80×40×0.55 mm. The composition includes 100 parts by weight of potassium sulfate and 33.3 parts by weight of lithium sulfate.

[0041] Using the composition for chemical strengthening, the method for chemical strengthening includes the following steps:

[0042] (1) Add the prepared composition into the strengthening furnace, and heat it at a temperature of 500°C until it is completely melted;

[0043] (2) preheating the glass;

[0044] (3) Put the preheated glass into molten salt for chemical strengthening, and the strengthening time is 60 minutes;

[0045] (4) Wash and dry the strengthened glass after cooling.

Embodiment 3

[0047] The aluminosilicate glass is processed into small pieces of glass of 80×40×0.55 mm. The composition includes 100 parts by weight of potassium sulfate and 25 parts by weight of sodium sulfate.

[0048] Using the composition for chemical strengthening, the method for chemical strengthening includes the following steps:

[0049] (1) Add the prepared composition into the strengthening furnace and heat it at 550°C until it is completely melted;

[0050] (2) preheating the glass;

[0051] (3) Put the preheated glass into molten salt for chemical strengthening, and the strengthening time is 100 minutes;

[0052] (4) Wash and dry the strengthened glass after cooling.

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Abstract

The present disclosure relates to a composition and a method for chemically strengthening glass, and chemically strengthened glass. The composition comprises a component A and a component B. Taking the weight amount of the component A as 100 parts, the content of the component B is 25-70 parts by weight. The component A is a sylvite, and the component B is a sodium salt and / or a lithium salt; theanions of the component A and the anions of the component B are the same, and the component A and the component B are respectively selected from one of sulfates, carbonates and hydrochlorides. The composition disclosed by the invention is used for chemically strengthening glass, and small-radius metal ions in glass can be replaced with large-radius ions in molten salt through one-step strengthening, so that the surface of glass is expanded, pressure stress is formed on the surface of glass, and the purpose of strengthening is achieved. The composition can reinforce glass at a relatively high temperature of 400 to 600 DEG C, so that ion exchange is promoted, and the reinforcing time is shortened. The composition disclosed by the invention is used for chemically strengthening glass, so thatthe treatment time can be shortened, glass is still transparent, and no crystal is generated.

Description

technical field [0001] The present disclosure relates to the field of cover glass, in particular, to a composition for chemically strengthening glass, a method and chemically strengthened glass. Background technique [0002] With the development of the touch screen market, it has become a new trend for consumers to pursue the thinness and convenience of related products, which will promote the development of cover glass in a thinner direction. The sharp reduction in glass thickness makes thin glass have the advantages of small volume and light weight compared with ordinary glass, but this also has obvious disadvantages, that is, the mechanical properties of glass are significantly reduced. In order to improve performance, chemical glass is often used for thin glass. Strengthening method. The main component of molten salt for chemically strengthening glass is potassium nitrate, and the strengthening time of potassium nitrate is long and the production efficiency is low. Co...

Claims

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Application Information

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IPC IPC(8): C03C21/00
CPCC03C21/002
Inventor 裴郁蕾向前飞崔静娜张家鑫
Owner BYD CO LTD