A kind of aluminosilicate glass and its preparation method and application

A technology of aluminosilicate glass and glass raw materials, which is applied in glass manufacturing equipment, glass furnace equipment, glass production, etc., can solve the problems of poor strength and toughness of aluminosilicate glass, and achieve enhanced softening resistance and diffusion activation Can reduce the effect of switching frequency

Active Publication Date: 2022-07-12
CHINA BUILDING MATERIALS ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the object of the present invention is to solve the problem of poor strength and toughness of aluminosilicate glass in the prior art by providing an aluminosilicate glass and its preparation method and application, which can significantly improve the aluminosilicate glass. The mechanical properties of glass meet the requirements of industry development for glass strength

Method used

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preparation example Construction

[0033] The invention provides a preparation method of aluminosilicate glass, comprising the following steps:

[0034] Step 1, according to the set content of each component of the aluminosilicate glass, take the corresponding glass raw material and mix it uniformly, wherein the glass raw material contains Al(PO) 3 ) 3 pink;

[0035] In step 2, the uniformly mixed raw materials in step 1 are subjected to high temperature melting, clarification, leakage forming and annealing to obtain aluminosilicate glass;

[0036] Step 3, preheating the tempered molten salt to a molten state, wherein the tempered molten salt includes potassium nitrate, sodium nitrate, potassium phosphate and potassium carbonate; wherein the functions of potassium nitrate and sodium nitrate are mainly to complete Li-Na and Na- The ion exchange of K can obtain a variety of stress layers and higher stress to achieve enhanced effects; the role of potassium phosphate and potassium carbonate is to introduce phosph...

Embodiment 1

[0056] According to the set content of each component of the aluminosilicate glass, take the corresponding glass raw material and mix it uniformly. Based on the weight percentage based on the oxide, the glass raw material contains 42% SiO 2 ; 16% Al 2 O 3 ; 8% LiO 2 ; 3% ZnO 2 ; 8% La 2 O 3 ; 6% ZrO 2 ; 1% TiO 2 ; 1% Sb 2 O 3 ; 3% B 2 O 3 ; 3% MgO; 2% BaO; 5% Y 2 O 3 and 2% Al (PO 3 ) 3 . The uniformly mixed raw materials are melted at a high temperature in a melting furnace at 1500°C, and mechanically stirred at a gradient of 50rpm / 0.5h+30rpm / 0.5h+20rpm / 1h to ensure uniform distribution of the glass powder. After leakage forming and annealing, aluminosilicate glass is obtained. After testing, the flexural strength of the aluminosilicate glass is 430MPa, and the fracture toughness is 1.21MPa m 1 / 2 , thermal expansion coefficient 45×10 -7 ℃; using the modified and optimized chemical toughening method for strengthening treatment, immersing the above-mentioned a...

Embodiment 2

[0058] According to the set content of each component of the aluminosilicate glass, take the corresponding glass raw materials and mix them uniformly. Based on the weight percentage based on oxides, the glass raw materials contain 48% SiO 2 ; 16% Al 2 O 3 ; 8% LiO 2 ; 3% ZnO 2 ; 5% La 2 O 3 ; 4% ZrO 2 ; 1% TiO 2 ; 1% Sb 2 O 3 ; 3% B 2 O 3 ; 3% MgO; 2% BaO; 5% Y 2 O 3 and 1% Al (PO 3 ) 3 . The uniformly mixed raw materials are melted at a high temperature in a melting furnace at 1450°C, and subjected to gradient mechanical stirring at 40rpm / 1h+30rpm / 0.5h+20rpm / 1h to ensure uniform distribution of the glass frit. After leakage forming and annealing, aluminosilicate glass is obtained. After testing, the flexural strength of the aluminosilicate glass is 442MPa, and the fracture toughness is 1.27MPa m 1 / 2 , thermal expansion coefficient 48×10 -7 / °C; using a modified and optimized chemical tempering method for strengthening treatment, immersing the above aluminosi...

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Abstract

The invention relates to an aluminosilicate glass and a preparation method and application thereof. The preparation method comprises the following steps: taking corresponding glass raw materials according to the set content of each component of the aluminosilicate glass and mixing them uniformly, wherein the glass The raw material contains Al(PO 3 ) 3 powder; carry out high temperature melting, clarification, leakage forming and annealing of the uniformly mixed raw materials to obtain aluminosilicate glass; preheat the tempered molten salt to a molten state, wherein the tempered molten salt includes potassium nitrate, sodium nitrate, phosphoric acid Potassium and potassium carbonate; the prepared glass is immersed in molten tempered molten salt, and chemically tempered to obtain a strengthened aluminosilicate glass. In the preparation method of the aluminosilicate glass of the present invention, by adding potassium phosphate and potassium carbonate to the molten salt, a better strengthening effect can be achieved and the service life of the molten salt can be ensured.

Description

technical field [0001] The invention relates to the technical field of glass tempering treatment, in particular to an aluminosilicate glass and a preparation method and application thereof. Background technique [0002] In recent years, the widespread use of devices such as smartphones and laptops has increased the demand for thin glass, but the bottleneck faced by thin glass is the reduction of glass strength and toughness, which is related to the composition and structure of the glass itself. In order to meet the use requirements of thin glass, it is necessary to optimize the components and processing and forming processes of the glass, and to strengthen and toughen the glass. [0003] At present, the methods of glass strengthening and toughening mainly include physical tempering, chemical tempering, acid corrosion tempering, coating tempering, etc. Although these methods can significantly improve the strength of glass, they are still far from the theoretical strength. Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C6/00C03C1/00C03B5/16C03C21/00H04M1/02G06F1/16
CPCC03C1/00C03C21/002C03B5/16H04M1/026G06F1/1613Y02P40/57
Inventor 韩韬王衍行何坤李宝迎祖成奎王琪
Owner CHINA BUILDING MATERIALS ACAD
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