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Aluminosilicate glass and preparation method

A kind of aluminosilicate glass and glass technology, which is applied in branch office equipment, telephone communication, electrical components, etc., can solve the problems of high equipment investment and production cost, poor process stability, low yield rate, etc., and achieve improved drop resistance stability , Improve the effect of falling and crushing height

Active Publication Date: 2019-11-22
CSG HOLDING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the actual application of the two-step or multi-step ion strengthening process, it is difficult to control the overall process time to be shortened within 300 minutes, and it is prone to problems such as pollution from different molten salts in the two-step method, and the service life of the molten salt is too short. , poor process stability, low yield, high equipment investment and production costs, etc.

Method used

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  • Aluminosilicate glass and preparation method
  • Aluminosilicate glass and preparation method
  • Aluminosilicate glass and preparation method

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Embodiment

[0052] In Tables 1-4, commonly-used glass raw materials such as oxides and carbonates, etc. were appropriately selected to have the compositions shown in the tables, weighed to make batches greater than 500 g, and thoroughly stirred and mixed. Put the batch mixture into a platinum crucible larger than 400ml, put the platinum crucible into a silicon-molybdenum furnace, heat up to 1670°C, melt and clarify for more than 8 hours, homogenize it and cast it into a mold, and anneal at a temperature below 750°C Precision annealing is carried out at high temperature, and subsequently bulk glass is obtained. Carry out precision wire cutting to this bulk glass, and all carry out grinding and polishing to two surfaces, obtain the ultra-thin glass of two kinds of different thicknesses that diagonal length dimension is 6 inches, thickness is 1.1mm and 0.5mm.

[0053] The size and thickness of the above ultra-thin glass can be adjusted arbitrarily according to the needs of end customers of e...

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Abstract

The invention discloses aluminosilicate glass and a preparation method. The aluminosilicate glass comprises the following components in percentage by mass based on oxides: 65%-75% of SiO2, 10%-19% ofAl2O3, 4%-8% of Li2O, 3%-7% of Na2O, 4%-8% of MgO and 1%-5% of ZrO2. The glass composition disclosed by the invention is combined with a specific primary ion exchange process, so that the intermediatetensile stress value of the strengthened ultrathin glass can be effectively controlled, the ultrathin glass with the same thickness has a lower CT value, and anti-falling stability of a protective cover plate can be improved.

Description

technical field [0001] The present invention relates to silicate glass, and further relates to a kind of aluminosilicate glass, a kind of preparation method of aluminosilicate glass. Background technique [0002] Mobile phones have now become a necessity in daily life, tablet computers are also becoming popular, and various devices with touch screen panels have also been widely used in various industries. In recent years, with the development of mobile Internet 5G communication technology and wireless charging technology, more and more mobile phones are designed to use double-sided glass. At the same time, in order to pursue differentiated and personalized design concepts such as thinning and narrow bezels, more and more mobile phones have adopted 3D curved cover or back panel designs. [0003] In order to pursue the anti-drop performance of the protective cover or rear cover backplane, and continuously improve the height of its drop and fragmentation, mobile phone manufact...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/097C03C3/085C03C21/00H04M1/02
CPCC03C3/097C03C3/085C03C21/002H04M1/0283
Inventor 肖子凡刘建党何浩波邓臻禄戴斌刘攀
Owner CSG HOLDING
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