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Compositions for reinforcing glass and its reinforcing method

A composition and glass technology, which is applied in the field of composition and strengthening for strengthening glass, can solve the problems such as the strength of ultra-thin glass does not rise but falls, normal cutting cannot be performed, and ITO film is damaged, etc. time, reduced energy consumption, and improved compressive strength

Active Publication Date: 2007-05-16
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If it is necessary to chemically strengthen this kind of glass, it needs to be carried out before ITO plating, otherwise the strengthening process will cause great damage to the ITO film
However, after strengthening by general physical or chemical methods, the strength of ultra-thin glass is prone to decrease instead of increase, and it cannot be cut normally, and cutting is a necessary process in the production of flat panel display panels.
If the processing formula and method are improper, some negative effects will be caused on the silicon dioxide film of silicon dioxide coated glass, such as: adhesion is reduced, light transmittance is reduced, etc., and the process method described in CN1162363C is still not suitable for flat panel display Reinforcement with ultra-thin silica-coated glass, so higher requirements are put forward for the strengthening of ultra-thin silica-coated glass for flat panel displays

Method used

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  • Compositions for reinforcing glass and its reinforcing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] This example illustrates the strengthening method of ultra-thin silica-coated glass

[0024] Mix 98.5 parts by weight of potassium nitrate, 0.5 parts by weight of potassium phosphate, and 1 part by weight of aluminum oxide. Put this mixture into a molten salt tank with good heat insulation performance, raise the temperature to 480°C at a constant speed under stirring, keep it for 15 minutes, then lower the temperature to 400°C to obtain molten salt.

[0025] Ultra-thin silica-coated glass with a size of 470 × 370 × 0.5 mm (SiO-coated glass produced by Japan Plate Glass Co., Ltd. 2 film, STN substrate glass) was slowly heated to 400°C, and then the ultra-thin silica-coated glass was immersed in the above molten salt for 30 minutes and then taken out, and the molten salt attached to the surface was allowed to flow down naturally, and then heated at 420°C After annealing, cleaning and drying in the annealing chamber, strengthened ultra-thin silica-coated glass B1 is obtaine...

Embodiment 2

[0027] This example illustrates the strengthening method of ultra-thin silica-coated glass

[0028] Mix 99 parts by weight of potassium nitrate, 0.05 parts by weight of potassium phosphate, and 0.05 parts by weight of aluminum oxide. Put this mixture into a molten salt tank with good heat insulation performance, raise the temperature to 460°C at a uniform speed under stirring, keep it for 20 minutes, then lower the temperature to 420°C to obtain molten salt.

[0029] Ultra-thin silica-coated glass with a size of 470×370×0.5 (SiO-coated glass produced by Japan Plate Glass Co., Ltd. 2 film, STN substrate glass) was slowly heated to 420°C, and then the ultra-thin silica-coated glass was immersed in the above molten salt for 60 minutes and then taken out, and the molten salt attached to the surface was allowed to flow down naturally, and then heated at 400°C Perform annealing in the annealing chamber, clean and dry to obtain strengthened ultra-thin silica-coated glass B2.

Embodiment 3

[0031] This example illustrates the strengthening method of ultra-thin silica-coated glass

[0032] Mix 95 parts by weight of potassium nitrate, 2.0 parts by weight of potassium phosphate, and 3.0 parts by weight of aluminum oxide. Put this mixture into a molten salt tank with good heat insulation performance, raise the temperature to 440°C at a constant speed under stirring, keep it for 10 minutes, then lower the temperature to 390°C to obtain molten salt.

[0033] Ultra-thin silica-coated glass with a size of 470×370×0.5 (SiO-coated glass produced by Japan Plate Glass Co., Ltd. 2 film, STN substrate glass) was slowly heated to 390°C, and then the ultra-thin silica-coated glass was immersed in the above-mentioned molten salt for 60 minutes and then taken out, and the molten salt attached to the surface was allowed to flow down naturally, and then heated at 420°C Perform annealing in the annealing chamber, clean and dry to obtain strengthened ultra-thin silica-coated glass B3...

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Abstract

The invention discloses a chemical reinforced composition of silica coating glass for panel display, which comprises the following parts: fusing salt with 85-99% potassium nitrate and 0.01-10% bialuminium trioxide, 0.01-10% other potassium salts, wherein the potassium salt contains one or more from potassium phosphate, potassium nitrite, potassium chloride, potassium sulfate, potassium silicate, potassium hydrogen phosphate and potassium bichromate.

Description

technical field [0001] The invention relates to a composition and a strengthening method for strengthening glass, more specifically to a chemically strengthening composition and a strengthening method for strengthening ultra-thin silicon dioxide coated glass. Background technique [0002] Glass is a brittle material with low tensile strength. The strength of brittle materials depends largely on its surface structure. Although the surface of glass looks complete and smooth, there are actually a large number of microcracks. Under the action of tensile stress, these microcracks expand at first, and then cracks from the surface. Therefore, if the effect of these surface microcracks can be eliminated, the tensile strength of the glass can be significantly improved. Due to various defects in the glass's own structure and production process, the actual tensile strength of the glass is much lower than the theoretical strength. In order to increase the strength of the glass, it is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C21/00
Inventor 杨彧李金美陈学刚何志奇
Owner BYD CO LTD
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