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Liquid medicine capable of improving surface strength of ultrathin glass as well as preparation method and application of liquid medicine

An ultra-thin glass and strength technology, applied in the field of folding screens, can solve the problems of reduced impact resistance and low surface strength of the glass surface, and achieve the effect of enhancing the surface etching effect, improving the formula, and improving the in-plane quality.

Pending Publication Date: 2021-10-08
芜湖东信光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The ultra-thin glass produced by traditional overflow, down-draw, float and thinning methods has the problem of low surface strength. The main reason is that micro-cracks are formed on the glass surface during the manufacturing process, resulting in a significant drop in the impact strength of the glass surface.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A liquid medicine that can improve the strength of ultra-thin glass surfaces, including the following raw materials in weight percentage: 0.3% hydrofluoric acid, 40% sulfuric acid, 0.3% phosphoric acid, 1.2% ammonium sulfate, 3.0% acetic acid, 6.0% nitric acid, deionized water 49.2%.

[0018] The preparation method is as follows: mixing the raw materials in the formula amount, heating to 50° C., and stirring evenly.

Embodiment 2

[0020] A liquid medicine that can improve the strength of ultra-thin glass surfaces, including the following raw materials in weight percentage: 0.4% hydrofluoric acid, 50% sulfuric acid, 0.3% phosphoric acid, 1.2% ammonium sulfate, 3.0% acetic acid, 6.0% nitric acid, deionized water 39.1%.

[0021] The preparation method is as follows: mixing the raw materials in the formula amount, heating to 50° C., and stirring evenly.

experiment example

[0029] Use the chemical solution in each embodiment and comparative example to treat the surface of the ultra-thin glass. The treatment method is: use acid-proof tooling or fixtures to insert the glass basket, immerse the tooling as a whole in the acid solution for etching for 60 seconds, and wash with water after etching , and the ultra-thin glass treated with the liquid medicine can be obtained.

[0030] Use AFM (atomic force microscope) to test the surface roughness of ultra-thin glass; place the glass on a marble platform, use a 55g steel ball for free fall, and record the vertical drop height of the steel ball when the glass breaks. The results are shown in Table 1. And the ultra-thin glass treated with no chemical solution was used as the control. The thickness of the ultra-thin glass plate used is 0.05 mm. The test results are shown in Table 1.

[0031] Table 1

[0032] Liquid source Falling ball height (55g small ball) Surface Roughness (Ra) untre...

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PUM

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Abstract

The invention discloses liquid medicine capable of improving the surface strength of ultra-thin glass as well as a preparation method and application of the liquid medicine. The liquid medicine is prepared from the following raw materials in percentage by weight: 0.1%-0.4% of hydrofluoric acid, 40%-60% of sulfuric acid, 0.2%-0.4% of phosphoric acid, 1%-2% of ammonium sulfate, 1.0%-20.0% of acetic acid, 2.0%-10.0% of nitric acid and the balance of deionized water. According to the invention, by controlling the composition and dosage of the raw materials, the degree of etching the surface of the ultra-thin glass by the liquid medicine, the etching uniformity and the etching rate are controlled, the in-plane quality of the ultra-thin glass treated by the liquid medicine is obviously improved, in-plane microcracks are obviously passivated, and the in-plane roughness is obviously reduced.

Description

technical field [0001] The invention belongs to the technical field of folding screens, and in particular relates to a liquid medicine capable of improving the strength of an ultra-thin glass surface, a preparation method and application thereof. Background technique [0002] With the development of society and the advancement of technology, glass has been widely used in the electronics industry, and the thickness of the usual ultra-thin glass is 0.1mm-0.33mm. However, the toughness and softness of the ultra-thin glass of the above thickness are not good, which cannot meet the needs of screens with curved edges or current folding screen applications that require extremely high bending degrees and times. [0003] At present, flexible materials or ultra-thin glass materials are generally used for folding screens. The mainstream requirements are to improve the impact resistance and bending performance of the glass. Among them, bending performance is the most important performan...

Claims

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Application Information

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IPC IPC(8): C03C15/00C09K13/08
CPCC03C15/00C09K13/08
Inventor 郑建军杨夫舜陈沛东岳伟齐彦杰
Owner 芜湖东信光电科技有限公司