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Catalyst for Touchable Glass Tempering Process

A glass tempering and catalyst technology, applied in glass tempering, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems such as large fluctuation range, instability, and production cost reduction.

Inactive Publication Date: 2017-06-20
SHANTOU TOPJET TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of catalysts can reduce the release temperature of potassium ions. However, the existing two types of catalysts have some defects in the ion exchange effect on the touchable glass surface. One type of catalyst can greatly increase the ion exchange rate in the tempering process, but in large During mass production, glass surface tempering stress and tempering depth will be uneven and unstable, and the fluctuation range is too large, resulting in about 10% to 30% of out-of-spec defects; another type of catalyst can stabilize large batches During the production process, the glass surface tempering stress value and tempering depth value can increase the qualified product rate of mass production to 95%, but the relative tempering time is relatively slow, which greatly affects the improvement of mass production efficiency and the reduction of production costs. Therefore, the two types of catalysts All will cause certain production defects to tempering mass production process operations to varying degrees

Method used

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  • Catalyst for Touchable Glass Tempering Process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A catalyst for a touchable glass tempering process, including K 2 O:;ZrO 2 ;Al 2 o 3 ;K 2 CO 3 ; Na 2 CO 3 ; KMnO 4 , the weight ratio of each component is: K 2 O: 6 parts, ZrO 2 : 6 parts, Al 2 o 3 : 20 copies, K 2 CO 3 : 50 parts, Na 2 CO 3 : 8 parts, KMnO 4 : 10 servings.

[0032] Using method, it is characterized in that described using method is:

[0033] A, the potassium nitrate that will be broken into powder is poured in the heating furnace:

[0034] B. Heating furnace temperature to 400°C to completely melt potassium nitrate, then keep the temperature at 400°C;

[0035] C, breaking the catalyst raw material into a powdery mixture;

[0036] D, finish constant temperature, add catalyzer by the 10% percentage of added potassium nitrate weight;

[0037] E. The above mixture was precipitated for 24 hours to prepare.

Embodiment 2

[0039] A catalyst for a touchable glass tempering process, including K 2 O:;ZrO 2 ;Al 2 o 3 ;K 2 CO 3 ; Na 2 CO 3 ; KMnO 4, the weight ratio of each component is: K 2 O: 8 parts, ZrO 2 : 8 servings, Al 2 o 3 : 24 parts, K 2 CO 3 : 50 parts, Na 2 CO 3 :5 parts, KMnO 4 : 5 servings.

[0040] The method of use is:

[0041] A, the potassium nitrate that will be broken into powder is poured in the heating furnace:

[0042] B. Raise the temperature of the furnace to 410°C to completely melt the potassium nitrate, then keep the temperature at 400°C;

[0043] C, breaking the catalyst raw material into a powdery mixture;

[0044] D, finish constant temperature, add catalyzer by the 4% percentage of added potassium nitrate weight;

[0045] E. The above mixture was precipitated for 48 hours.

Embodiment 3

[0047] A catalyst for a touchable glass tempering process, comprising a weight ratio of: K 2 O: 8 parts, ZrO 2 : 10 parts, Al 2 o 3 : 30 parts, K 2 CO 3 : 40 parts, Na 2 CO 3 :4 parts, KMnO 4 : 8 servings.

[0048] The method of use is:

[0049] A, the potassium nitrate that will be broken into powder is poured in the heating furnace:

[0050] B. Heating up the furnace temperature to 420°C to completely melt the potassium nitrate, then keep the temperature at 400°C;

[0051] C, breaking the catalyst raw material into a powdery mixture;

[0052] D, finish constant temperature, add catalyzer by the 8% percentage of added potassium nitrate weight;

[0053] E. The above mixture was precipitated for 36 hours to prepare.

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Abstract

The invention provides a catalyst in a touch-controllable glass tempering technology, wherein the catalyst includes following components, by weight: 1-8 parts of K2O, 2-10 parts of ZrO2, 10-30 parts of Al2O3, 40-60 parts of K2CO3, 2-10 parts of Na2CO3 and 2-10 parts of KMnO4. Compared with a reinforcing process in the prior art, the catalyst can significantly reduce a reinforcing time.

Description

[0001] Technical field: [0002] The invention belongs to a catalyst used in a glass strengthening process in the field of touchable glass processing, and specifically relates to a catalyst for a touchable glass tempering process. [0003] Background technique: [0004] For the touchable glass tempering process, the principle used is the ion exchange method. The method used is to immerse the glass in a molten potassium nitrate pool to promote the exchange of sodium ions on the glass surface with potassium ions in the potassium tank. Potassium nitrate In the absence of a catalyst, the solution will release potassium ions (K+) in a hot environment around 420 degrees, and the potassium ions (K+) will gradually replace the sodium ions (Na+) on the glass surface, and the potassium salt ions with larger molecular volume will press The glass surface increases its impact resistance. Potassium nitrate has a toughening effect on almost all alkali glasses under certain conditions, so pot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/34C03B27/03
Inventor 贺超谢庆强李华斌李艳秀林希
Owner SHANTOU TOPJET TECH