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Catalyst for chemically enhancing glass, preparation 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: 2009-02-25
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the existing glass chemical strengthening process, the generally used strengthening composition 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 the strength of the glass can be improved, the strengthening process takes a long time, and the impact resistance of the strengthened glass is low;

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The parts by weight of each component of the catalyst:

[0042] Component A: Potassium Hydroxide 2 Component B: Potassium Silicate 20

[0043] Component C: potassium chromate 80 potassium carbonate 50

[0044] Preparation method of glass strengthening fluid:

[0045] In step a, component B potassium silicate is added to the potassium nitrate molten salt in the strengthening furnace 1 and heated and melted for 4 hours to form the first molten salt mixture;

[0046] In step b, potassium carbonate and component C potassium chromate are respectively added to the first molten salt mixture and heated and melted for 1 hour to form a second molten salt mixture;

[0047] In step c, the potassium hydroxide of component A is added to the second molten salt mixture, heated and melted, and then left to stand for 2 hours to obtain a glass strengthening liquid.

[0048] Wherein the weight ratio of potassium nitrate molten salt to catalyst is 1:99.

[0049] The method of using this...

Embodiment 2

[0053] The parts by weight of each component of the catalyst:

[0054] Component A: Potassium Hydroxide 2 Component B: Potassium Silicate 50

[0055] Component C: Potassium Phosphate 50 Potassium Carbonate 50

[0056] Preparation method of glass strengthening fluid:

[0057]In step a, component B potassium silicate is added to the potassium nitrite molten salt in the strengthening furnace 1 and heated and melted for 2 hours to form the first molten salt mixture;

[0058] In step b, component C potassium phosphate and potassium carbonate are respectively added to the first molten salt mixture and heated and melted for 4 hours to form a second molten salt mixture;

[0059] In step c, the potassium hydroxide of component A is added to the second molten salt mixture, heated and melted, and then left to stand for 6 hours to obtain a glass strengthening liquid.

[0060] Wherein the weight ratio of potassium nitrite molten salt to catalyst is 1.9:98.1.

[0061] The method of usin...

Embodiment 3

[0065] The parts by weight of each component of the catalyst:

[0066] Component A: Potassium Fluoride 1 Component B: Potassium Silicate 30

[0067] Component C: potassium permanganate 70 potassium carbonate 10

[0068] Preparation method of glass strengthening fluid:

[0069] In step a, the component B potassium silicate is added to the potassium nitrate and potassium chloride molten salt in the strengthening furnace 1 and heated and melted for 1 hour to form the first molten salt mixture;

[0070] In step b, component C potassium permanganate and potassium carbonate are respectively added to the first molten salt mixture and heated and melted for 5 hours to form a second molten salt mixture;

[0071] In step c, the potassium fluoride of component A is added into the second molten salt mixture, heated and melted, and then left to stand for 2 hours to obtain a glass strengthening liquid.

[0072] Wherein the weight ratio of potassium nitrate molten salt to catalyst is 1.7:9...

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Abstract

The invention discloses a catalyst used for strengthening glass, a preparation method and the application thereof. The catalyst is prepared according to the following steps: component B is added into molten salt and melted for 1 to 5 hours, then potassium carbonate and component C are added into the molten salt and melted for 0.5 to 8 hours, finally, component A is added into the molten salt obtained and put statically for 2 to 10 hours. The catalyst of the invention which is used for chemical strengthening of glass can improve the surface compressive stress and the strength 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 invention relates to a chemical catalyst composition and its application field, in particular to a glass chemical strengthening catalyst. The present invention also relates to the preparation method and application of the above-mentioned catalyst. Background technique [0002] There are a large number of microcracks on the surface of the glass, which can easily cause stress concentration and cause the glass to break, which seriously affects the tensile strength of the glass. In order to increase the tensile strength of glass, a lot of research has been done on the strengthening process. 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 of less than 3mm or immersing it in molten salt such as potassium nitra...

Claims

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Application Information

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