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

A technology for strengthening glass and composition, applied in the field of chemically strengthened glass composition and chemically strengthened glass, can solve the problems of long potassium nitrate strengthening time and low production efficiency, and achieves the promotion of rapid ion exchange, energy saving, shortening Strengthen the effect of time

Active Publication Date: 2021-09-03
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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  • Compositions, methods, and chemically strengthened glass for chemically strengthening 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, method, and chemically strengthened glass for chemically strengthening glass. The composition contains component A and component B, and the content of component B is 25 to 70 parts by weight relative to 100 parts by weight of component A; the component A is potassium salt, and the component B is sodium salt and / or lithium salt; the anions of the A component and the B component are the same, and the A component and the B component are each selected from one of sulfate, carbonate and hydrochloride. The composition of the present disclosure is used for chemically strengthening glass, and can replace small-radius metal ions in the glass with large-radius ions in the molten salt through one-step strengthening, so that the glass surface expands, thereby forming compressive stress on the glass surface to achieve strengthening. Purpose. The composition can strengthen the glass at a relatively high temperature of 400-600 DEG C, thereby promoting ion exchange and reducing strengthening time. The composition of the present application chemically strengthens the glass, can shorten the processing time, and the glass still remains transparent without crystallization.

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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Patent Type & AuthorityPatents(China)
IPC IPC(8): C03C21/00
CPCC03C21/002
Inventor裴郁蕾向前飞崔静娜张家鑫
OwnerBYD CO LTD