Unlock instant, AI-driven research and patent intelligence for your innovation.

Method of determining content of boron oxide in glass

A technology of boron oxide content, applied in the preparation of test samples, chemical analysis by titration, etc., can solve the problems affecting the accuracy of test results, liquid splashing, long time consumption, etc., and achieve parallelism to ensure consistent reactions and repeatability, reduce preprocessing time, and improve work efficiency

Inactive Publication Date: 2016-05-11
东旭(营口)光电显示有限公司 +2
View PDF4 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The content of boron oxide in TFT glass has a great influence on the above-mentioned properties of the glass, especially the hardness and brightness of TFT glass. The determination of boron oxide content plays an important role in the quality control of TFT glass; therefore, in TFT glass In the production process of glass, the content of boron oxide in TFT glass must be accurately measured, analyzed and controlled; in these detection methods, in order to facilitate the detection of boron oxide content in TFT glass, it is necessary to pretreat solid TFT glass samples to obtain liquid TFT Glass samples, specifically, put TFT glass with alkali in a silver crucible for high-temperature melting and decomposition to obtain liquid TFT glass samples. The melting temperature of this method is relatively high, generally above 700°C, and the melting time is relatively long, generally within 10 minutes. As mentioned above, liquid splashes are easy to occur during the operation process, which affects the accuracy of the detection results, and there are safety problems. The method has the problems of high energy consumption, low efficiency, and unfavorable production control when determining the content of boron oxide in glass.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 0.2g of TFT glass powder, 2g of sodium peroxide (Na 2 o 2 ) powder and 8mL distilled water in the digestion tank, immediately tighten the digestion tank and tighten the safety valve plug, set the microwave digestion power of the first stage to 400W, the digestion pressure to 1.0MPa, and the digestion time to 1min, and the second stage to The microwave digestion power is 600W, the digestion pressure is 2.5MPa, and the digestion time is 1min. The microwave digestion power of the third stage is 400W, the pressure is 3.0MPa, and the digestion time is 3min. After the third stage of microwave digestion is completed, open the digestion tank. Obtain a clear and transparent liquid to be tested;

[0024] Transfer the liquid to be tested in the digestion tank to a beaker containing 20 mL of distilled water, wash the inner wall of the digestion tank with distilled water several times until it is cleaned, and mix the obtained washing liquid with the liquid to be tested in the beake...

Embodiment 2

[0030] The difference between this embodiment 2 and embodiment 1 is that 0.18g of TFT glass powder, 1.8g of sodium hydroxide powder and 7mL of distilled water are placed in the digestion tank, and the digestion tank is immediately tightened and the safety valve plug is set. The power of microwave digestion in the first stage is 350W, the digestion pressure is 0.9MPa, and the digestion time is 0.9min. The microwave digestion power of the second stage is 550W, the digestion pressure is 2.2MPa, and the digestion time is 1min. The power is 380W, the pressure is 2.8MPa, and the digestion time is 2.5min. After the third stage of microwave digestion is completed, the digestion tank is opened to obtain a clear and transparent test solution; two parallel experiments are performed to detect the content of boron oxide in TFT glass The results are shown in Table 2.

Embodiment 3

[0032] The difference between this embodiment 3 and embodiment 1 is that 0.22g of TFT glass powder, 2.2g of potassium hydroxide powder and 9mL of distilled water are placed in the digestion tank, and the digestion tank is immediately tightened and the safety valve plug is set. The power of microwave digestion in the first stage is 400W, the digestion pressure is 1.1MPa, and the digestion time is 1.1min. The microwave digestion power of the second stage is 600W, the digestion pressure is 2.6MPa, and the digestion time is 1.2min. The digestion power is 430W, the pressure is 3.2MPa, and the digestion time is 3.5min. After the microwave digestion of the third stage is completed, the digestion tank is opened to obtain a clear and transparent liquid to be tested; two parallel experiments are carried out to find out the content of boron oxide in TFT glass The test results are shown in Table 3.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method of determining the content of boron oxide in glass. The method comprises the steps that glass powder to be tested, a microwave digestion agent and water are added into microwave digestion equipment for microwave digestion for 3 min to 10 min to obtain liquid to be tested; the mass ratio of the glass powder to be tested to the microwave digestion agent is 0.18-0.22 to 1.8-2.2; the microwave digestion agent is one or a mixture of more than one of NaOH, Na2O2, KOH, LiOH, Na2CO3, K2CO3, LiBO2 and Na2B4O7.10H2O; the microwave digestion pressure is 1 MPa to 4 MPa, and the microwave digestion power is 300 W to 700 W; a mannitol titration method is adopted for titration of the liquid to be tested to obtain the content of boron oxide in the glass. The method has the advantages that energy consumption is small, efficiency is high, the testing result is more accurate, and production control is easier.

Description

technical field [0001] The invention relates to the field of glass component detection, in particular to a method for measuring boron oxide content in glass. Background technique [0002] The detection method of glass composition is generally to pretreat the glass sample first, and then detect the content of a certain component in the glass by adding acid, alkali and other reagents. Common methods for the determination of boron oxide content in glass include mannitol volumetric method, potentiometric analysis, photometric analysis and ICP-AES; the above three methods all include glass sample pretreatment process, and the commonly used pretreatment method is high temperature Alkali fusion method, that is to mix alkali and glass powder and place it on an electric furnace to heat and melt it to a liquid glass sample, and after cooling, leaching the frit with boiling water to obtain the solution to be tested. [0003] TFT glass is a thin film transistor used to manufacture liqu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01N31/16G01N1/44
CPCG01N31/16G01N1/44
Inventor 林娇娇
Owner 东旭(营口)光电显示有限公司