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Catalyst for chemically enhancing glass and use thereof

A technology of glass strengthening and catalyst, which is applied in chemical catalyst composition and its application field, can solve the problems of low impact resistance of glass and long time of strengthening process, etc., and achieve the effect of increasing compressive stress and glass strength

Active Publication Date: 2012-01-25
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The strengthening composition generally used in the existing glass chemical strengthening process is to add 0.5% potassium carbonate to the molten salt of potassium nitrate and / or potassium nitrite, or add 0.02% potassium phosphate and 0.2% aluminum oxide, although It can improve the strength of glass, but the strengthening process takes a long time, and the impact resistance of strengthened glass is low

Method used

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  • Catalyst for chemically enhancing glass and use thereof
  • Catalyst for chemically enhancing glass and use thereof
  • Catalyst for chemically enhancing glass and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Parts by weight of each component of the first catalyst:

[0040] Component A: Potassium Chromate 80 Component B: Potassium Carbonate 50

[0041] Parts by weight of each component of the second catalyst:

[0042] Component C: Potassium Hydroxide 40 Component D: Potassium Silicate 20

[0043] The above-mentioned first catalyst is added to potassium nitrate molten salt E and heated and melted to form a molten salt to prepare a first glass strengthening solution; the above-mentioned second catalyst is added to another potassium nitrate molten salt F to be heated and melted to form a molten salt to obtain a second Glass strengthening fluid.

[0044] The weight ratio of potassium nitrate molten salt to the first catalyst is 99:1;

[0045] The weight ratio of potassium nitrate molten salt to the second catalyst is 98.5:1.5.

[0046] The method to increase the strength of the glass by using the glass strengthening liquid:

[0047] Step a: Clean and dry the polished soda-lime float glass 3...

Embodiment 2

[0050] Parts by weight of each component of the first catalyst:

[0051] Component A: Potassium Chromate 100 Component B: Potassium Carbonate 45

[0052] Parts by weight of each component of the second catalyst:

[0053] Component C: potassium hydroxide 1 Component D: potassium pyrophosphate 10,

[0054] The above-mentioned first catalyst is added to potassium nitrate molten salt E and heated and melted to form a molten salt to prepare a first glass strengthening liquid; the above-mentioned second catalyst is added to potassium nitrate molten salt F to be heated and melted to form a molten salt to obtain a second glass strengthened liquid.

[0055] The weight ratio of potassium nitrate molten salt to the first catalyst is 98.5:1.5;

[0056] The weight ratio of potassium nitrate molten salt to the second catalyst is 99:1.

[0057] The method to increase the strength of the glass by using the glass strengthening liquid:

[0058] Step a: Clean and dry the polished soda lime float glass 3 wit...

Embodiment 3

[0061] Parts by weight of each component of the first catalyst:

[0062] Component A: potassium sulfate 70 Component B: aluminum oxide 40

[0063] Parts by weight of each component of the second catalyst:

[0064] Component C: potassium hydroxide 10 Component D: potassium phosphate 80,

[0065] The above-mentioned first catalyst is added to potassium nitrite molten salt E and heated and melted to form a molten salt to prepare a first glass strengthening liquid; the above-mentioned second catalyst is added to potassium nitrate molten salt F to be heated and melted to form a molten salt to obtain a second glass Strengthening fluid.

[0066] The weight ratio of potassium nitrite molten salt to the first catalyst is 98.5:1.5;

[0067] The weight ratio of potassium nitrate molten salt to the second catalyst is 99:1.

[0068] The potassium nitrate molten salt is a mixture of potassium nitrate and potassium chloride, and potassium chloride accounts for 10% of the weight of the entire molten sal...

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Abstract

The invention discloses a catalyst used for strengthening glass intensity, wherein, the catalyst comprises a first catalyst and a second catalyst. The first catalyst is added into molten salt, and first glass strengthening liquid is obtained. The second catalyst is added into the molten salt, and second glass strengthening liquid is obtained. Then the glass to be strengthened is put into the first glass strengthening liquid and the second glass strengthening liquid in sequence, and the strengthening process is completed. The catalyst of the invention can improve surface compressive stress andstrength of the glass, as well as can prolong the service life of the glass. The invention pertains to the chemical strengthening field of the glass.

Description

Technical field [0001] The present invention relates to chemical catalyst compositions and their application fields, and in particular to a catalyst for chemical strengthening of glass. The present invention also relates to a method for preparing a glass chemical strengthening liquid using the above catalyst and its application. Background technique [0002] There are a large number of micro-cracks on the surface of the glass, which can easily cause stress concentration and cause the glass to break, seriously affecting the tensile strength of the glass. In order to improve the tensile strength of glass, a lot of research has been done on strengthening processes. Chemical strengthening includes high-temperature chemical strengthening and low-temperature chemical strengthening. Low-temperature chemical strengthening is widely used in production due to its low cost. It generally refers to spraying on the surface of soda-lime float glass with a thickness less than 3mm or imme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/00C03C21/00
Inventor 杨会良
Owner BYD CO LTD