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Aluminosilicate glass and preparation method

A kind of technology of aluminosilicate glass and glass raw material, which is applied in the preparation of aluminosilicate glass and the field of aluminosilicate glass, which can solve the problems of high equipment investment and production cost, poor process stability, and short service life of molten salt, etc. problems, to achieve the effect of improving the stability against falling and increasing the height of falling and crushing

Active Publication Date: 2022-07-05
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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Experimental program
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Embodiment

[0052] In Tables 1-4, commonly used glass raw materials such as oxides and carbonates, etc. are appropriately selected to have the compositions shown in the table, weighed to obtain batches of more than 500 g, and thoroughly mixed with stirring. Put the batch mixture into a platinum crucible larger than 400ml, put the platinum crucible into a silicon molybdenum furnace, heat it up to 1670°C, melt and clarify it for more than 8 hours, homogenize it and cast it into a mold, and anneal it below 750°C Precision annealing is carried out at the temperature, and then a bulk glass is obtained. The block glass is precisely wire-cut, and both surfaces are ground and polished to obtain two types of ultra-thin glass with a diagonal length of 6 inches and a thickness of 1.1 mm and 0.5 mm.

[0053] The size and thickness of the above ultra-thin glass can be adjusted arbitrarily according to the needs of end customers of electronic products, the thickness range is 0.2~1.1mm, and the size ran...

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Abstract

The invention discloses an aluminosilicate glass and a preparation method, wherein the mass percentage based on oxides includes: 65%-75% SiO 2 , 10%~19% Al 2 O 3 , 4% to 8% Li 2 O, 3% to 7% Na 2 O, 4% to 8% MgO, and 1% to 5% ZrO 2 . The glass composition of the invention combined with a specific primary ion exchange process can effectively control the intermediate tensile stress value after the ultra-thin glass is strengthened, and the ultra-thin glass of the same thickness has a lower CT value, which can improve the drop resistance of the protective cover. stability.

Description

technical field [0001] The invention relates to silicate glass, and further relates to aluminosilicate glass and a preparation method of aluminosilicate glass. Background technique [0002] Mobile phones have now become a necessity in daily life, tablet computers have gradually become 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 use double-sided glass design. At the same time, in order to pursue differentiated and personalized design concepts such as thinness and narrow bezels, more and more mobile phones use 3D curved cover or backplane designs. [0003] In order to pursue the anti-drop performance of the protective cover or the back of the back cover, and to continuously increase the height of the drop and breakage, mobile phone manufacturers strive to obtain protective...

Claims

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Application Information

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Patent Type & Authority Patents(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