Fluorescence detection method of zirconia content in TFT glass

Abstract

The invention discloses a fluorescence detection method of the zirconia content in TFT glass. The method comprises: a, finely grinding a glass sample to obtain glass powder; b, mixing the glass powder obtained from the step a with a fusing agent and a releasing agent for fusion sample preparation to obtain a fused glass sheet, wherein the mass ratio of the glass powder to the fusing agent to the releasing agent is 1: (0.5-2): (0.01-0.1), and the fusing agent is a mixture of lithium tetraborate and lithium metaborate with the mass ratio being (1-5): 1; and c, performing fluorescence detection of the fused glass sheet obtained from the step b to obtain the zirconia content in the glass sample. According to the method, the zirconia content in glass can be quickly, accurately, and efficiently measured.

Description

technical field [0001] The invention relates to the field of glass detection, in particular to a fluorescence detection method for zirconia content in TFT glass. Background technique [0002] Since a variety of glass products have been widely used in various fields of production and life, the characteristics and production processes of glass used in different fields are very different, especially for TFT glass used in high-end display technology, which has great impact on production equipment and The production process is very demanding, and the process control capability of the glass melting furnace has the greatest impact on product quality and product yield. The brick body of the glass melting furnace is usually a refractory material containing a high content of zirconia. The refractory material will be eroded by the molten glass at high temperature. Most of the eroded zirconia will be melted and dispersed into the molten glass, or part of it will be due to Its high dens...

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Problems solved by technology

[0003] Due to the existence of the matrix effect of the glass frit, the traditional fluorescence analysis method of zirconia in glass uses a large proportion of flux. Usually, the mass ratio of glass powder to flux is 1:10. In such a high dilution ratio, when If the zirconia content in the glass is lower than a certain level, further dilution of the zirconia content in the molten glass sheet will be close to or lower than the detection limit of the fluorescence spectrometer, resulting in a significant reduction in the accuracy and precision of the test results and losing its monitoring significance

[0004] In addition, if the tablet method of glass powder mixed with binder is used to determine the content of zirconia, the stability and accuracy of the test results will be seriously affected due to its particle size effect, surface effect and uniformity of sample dispersion.