Catalyst for chemical enhancement of ultrathin optical glass panel, and applications of catalyst

A technology of optical glass and catalyst, which is applied in physical/chemical process catalysts, glass tempering, glass manufacturing equipment, etc., and can solve problems such as long time required

Inactive Publication Date: 2013-02-06
NANYANG HUAXIANG PHOTOELECTRIC SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing chemical strengthening proce...

Method used

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  • Catalyst for chemical enhancement of ultrathin optical glass panel, and applications of catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The catalyst for chemical strengthening of ultra-thin optical glass panels is made by mixing raw materials according to the following mass percentages: potassium carbonate 25%, potassium chloride 25%, sodium chloride 15%, aluminum oxide 25%, diatomite 10% %.

Embodiment 2

[0027] The catalyst for chemical strengthening of ultra-thin optical glass panels is made by mixing raw materials according to the following mass percentages: potassium carbonate 40%, potassium chloride 20%, sodium chloride 5%, aluminum oxide 20%, diatomite 15% %.

Embodiment 3

[0029] The catalyst for chemical strengthening of ultra-thin optical glass panels is made by mixing raw materials according to the following mass percentages: 50% potassium carbonate, 15% potassium chloride, 10% sodium chloride, 15% aluminum oxide, and 10% diatomaceous earth %.

[0030] The application of the catalyst in the chemical strengthening of ultra-thin optical glass panels is specifically as follows:

[0031] (1) Production of molten salt:

[0032] A. For preparation, wipe the molten salt furnace clean, raise the temperature of the furnace to 150°C, and keep the temperature constant for 30 minutes;

[0033] B. After drying in the molten salt furnace, start to add potassium nitrate, and after it is completely melted, settle at constant temperature for more than 12 hours;

[0034] C, after constant temperature finishes, add catalyst by the weight ratio of potassium nitrate, make strengthened molten salt;

[0035] (2) Strengthening steps:

[0036] Step a. Preheat...

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Abstract

The invention discloses a catalyst for chemical enhancement of an ultrathin optical glass panel, and applications of the catalyst. The catalyst is prepared by mixing the following raw materials in percentage by weight: 25-50% of potassium carbonate, 5-25% of potassium chloride, 2-15% of sodium chloride, 3-25% aluminium oxide, and 2-15% of diatomaceous earth. The applications of the catalyst comprise the steps of production and enhancement of fused salt. The catalyst can accelerate the ion exchange between Na<+> in glass and K<+> in fused salt, so as to offset microcracks, and can obviously shorten the time for chemical enhancement on the basis of not reducing the properties of the ultrathin optical glass panel.

Description

technical field [0001] The invention relates to a chemical catalyst composition and its application field, in particular to a catalyst for chemical strengthening of an ultra-thin optical glass panel and its application. Background technique [0002] There are a small number of microcracks on the surface of the ultra-thin optical glass panel, which can easily cause stress concentration and cause the glass to break easily, seriously affecting the tensile strength of the ultra-thin optical glass panel. At present, it is commonly used to immerse it in molten salt such as potassium nitrate for a period of time to increase the mechanical strength and thermal stability of the glass. [0003] The principle is: immerse the ultra-thin optical glass panel in the molten salt of potassium nitrate for a period of ten hours to dozens of hours, and the Na+ in the glass and the K+ ions in the molten salt will exchange ions, due to the K+ ions The radius of K+ is larger than that of Na+ ions...

Claims

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Application Information

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IPC IPC(8): B01J27/232C03B27/03
Inventor 杨国强冯坤张学明
Owner NANYANG HUAXIANG PHOTOELECTRIC SCI & TECH
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