Method for efficiently and accurately detecting content of silicon dioxide and aluminum oxide in glass

Abstract

The invention discloses a method for efficiently and accurately detecting the content of silicon dioxide and aluminum oxide in glass. The method comprises the following steps: A, adding to-be-detected glass powder into a weighing bottle, and drying the glass powder in a drying box; B, weighing the same amount of dried glass powder into a group of platinum crucibles, adding diluted hydrochloric acid, heating till each solution is slightly boiling, filtering, firing each solution with filter paper until obtained residual filtrate reaches constant weight, weighing and recording the mass as m0; C, heating and leaching each residual filtrate with diluted hydrofluoric acid, filtering, firing each filtrate with filter paper until an obtained aluminum oxide residue reaches constant weight, weighing, recording the mass as m1, calculating the content of aluminum oxide according to the difference between m1 and the mass of each crucible, and taking the average value of the values obtained be measuring the samples of the platinum crucibles as the final content value of aluminum oxide; and D, taking the average value of the values obtained by measuring the samples of the platinum crucibles as the final content value of silicon oxide according to the difference between m0 and m1 weighed twice. According to the method disclosed by the invention, the relative deviation is small, and the detection result is real and reliable; and moreover, the reliability of the detection result obtained by the method disclosed by the invention is higher than that of a detection result obtained by a traditional method.

Description

technical field

[0001] The invention relates to a physical and chemical analysis method for silicon dioxide and aluminum oxide in glass, in particular to a method for efficiently and accurately detecting the content of silicon dioxide and aluminum oxide in glass. Background technique

[0002] The sum of silica and alumina in the glass substrate can reach more than 75% of the total composition, and its content not only determines the main properties of the substrate, such as expansion coefficient, strain point, softening point, annealing point, etc., but also affects the molding viscosity of the glass substrate. It plays a decisive role with temperature, and is the first consideration in the formulation of glass substrate materials, so it is particularly important to quickly and accurately detect its content.

[0003] At present, the commonly used detection and analysis methods for silica and alumina components of glass substrates include X-ray fluorescence spectroscopy, pota...

Examples

Embodiment Construction

[0022] An embodiment will be described in detail below.

[0023] A method for efficiently and accurately detecting the content of silicon dioxide and aluminum oxide in glass, comprising the following steps:

[0024] Step A, take the glass powder to be tested in a weighing bottle, and then put the weighing bottle into a drying box for drying.

[0025] Step B. Weigh the same amount of dried glass powder into a set of platinum crucibles, then add dilute hydrochloric acid and heat to a slight boil, and add dilute hydrochloric acid when the solution evaporates to 1 / 3-1 / 2 of the total volume. Hydrochloric acid leaching, followed by filtration, and the residual filtrate obtained by burning together with the filter paper to constant weight, accurately weighed, recorded as m 0 .

[0026] Specifically, when performing step B, weigh two equal parts of 1.0000 g of glass powder dried at 110°C into two platinum crucibles, and add a small amount of pure water to moisten them; respectively ...

technical field

[0001] The invention relates to a physical and chemical analysis method for silicon dioxide and aluminum oxide in glass, in particular to a method for efficiently and accurately detecting the content of silicon dioxide and aluminum oxide in glass. Background technique

[0002] The sum of silica and alumina in the glass substrate can reach more than 75% of the total composition, and its content not only determines the main properties of the substrate, such as expansion coefficient, strain point, softening point, annealing point, etc., but also affects the molding viscosity of the glass substrate. It plays a decisive role with temperature, and is the first consideration in the formulation of glass substrate materials, so it is particularly important to quickly and accurately detect its content.

[0003] At present, the commonly used detection and analysis methods for silica and alumina components of glass substrates include X-ray fluorescence spectroscopy, pota...

Examples

Embodiment Construction

[0022] An embodiment will be described in detail below.

[0023] A method for efficiently and accurately detecting the content of silicon dioxide and aluminum oxide in glass, comprising the following steps:

[0024] Step A, take the glass powder to be tested in a weighing bottle, and then put the weighing bottle into a drying box for drying.

[0025] Step B. Weigh the same amount of dried glass powder into a set of platinum crucibles, then add dilute hydrochloric acid and heat to a slight boil, and add dilute hydrochloric acid when the solution evaporates to 1 / 3-1 / 2 of the total volume. Hydrochloric acid leaching, followed by filtration, and the residual filtrate obtained by burning together with the filter paper to constant weight, accurately weighed, recorded as m 0 .

[0026] Specifically, when performing step B, weigh two equal parts of 1.0000 g of glass powder dried at 110°C into two platinum crucibles, and add a small amount of pure water to moisten them; respectively ...