Glass for chemical strengthening, and chemically strengthened glass

A technology of strengthening glass and glass transition, applied in glass production and other directions, can solve problems such as reducing precision and achieve the effect of high surface compressive stress

Active Publication Date: 2017-03-01
ASAHI GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that the accuracy of film formation and patterning decreases (for example, refer to Patent Document 1)

Method used

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  • Glass for chemical strengthening, and chemically strengthened glass
  • Glass for chemical strengthening, and chemically strengthened glass

Examples

Experimental program
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Effect test

Embodiment

[0181] Hereinafter, the present invention will be specifically described with reference to examples, but the present invention is not limited to these examples. In addition, examples 1-8 are examples, and examples 9-15 are comparative examples.

example 1～15

[0183] (Production of glass for chemical strengthening)

[0184] Raw materials for each component of glass for chemical strengthening were prepared so as to have the compositions shown in Table 1 and Table 2 (expressed in mass percent and mole percent based on oxides). With respect to 100 mass parts of the raw material components for glass, SO was added to the raw material for glass 3 The sulfate was converted to 0.1 parts by mass and melted by heating at a temperature of 1600° C. for 3 hours using a platinum crucible. During melting, a platinum stirrer was inserted and stirred for 1 hour to homogenize the glass. Next, the molten glass was flowed out, kept at Tg+50° C. for 1 hour, and then cooled at 1° C. / min. After cooling, grinding and polishing were performed to form a plate, and as the glass for chemical strengthening of Examples 1 to 15, a plurality of glass plates for physical property measurement and glass plates for chemical strengthening were obtained in each exampl...

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Abstract

Provided are: a glass for chemical strengthening, suitable for a display member and having high precision of film formation and patterning (not being prone to positional misalignment) on a glass sheet and low compaction in heat treatment at low temperature (150-300 DEG C) during manufacturing of a display member, even in the case of a glass sheet manufactured by a fusion method or the like in which the cooling rate during glass forming is high; and a chemically strengthened glass obtained using the glass for chemical strengthening. A glass for chemical strengthening, obtained by melting and cooling a glass raw material, the glass for chemical strengthening containing, in percent by mass in terms of oxide, 61-75% SiO2, 2.5-10% Al2O3, 6-12% MgO, 0.1-8% CaO, 14-19% Na2O, and 0-1.8% K2O.

Description

technical field [0001] The present invention relates to a chemically strengthened glass and a chemically strengthened glass that are used in applications such as various touch panels and various display panels, for example, by patterning a conductive film or the like on glass. Background technique [0002] The glass plate for chemical strengthening can be manufactured by various forming methods such as a float method, a roll method, and a fusion method using soda lime silicate glass and alkali aluminosilicate glass. The above-mentioned float method, which is a forming method in which a glass sheet is pulled out in the horizontal direction, can sufficiently secure the length of the annealing furnace. In contrast, there is a restriction in the length of the annealing furnace in a method of forming in a vertical direction such as the melting method. , so the annealing time is insufficient. When the annealing time is insufficient, the cooling rate of the glass plate after formi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/087C03B25/04C03C21/00
CPCC03B25/025C03C21/002C03C3/087Y02P40/57C03B25/04
Inventor 宫坂顺子大原盛辉
Owner ASAHI GLASS CO LTD
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