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Alkali aluminosilicate glass with high elastic modulus and preparation method thereof

A technology of silicate glass with high elasticity, which is applied in glass manufacturing equipment, glass tempering, glass molding, etc., and can solve problems such as poor elastic modulus of glass

Pending Publication Date: 2021-11-09
河北视窗玻璃有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In addition, the elastic modulus of glass in other prior art is also not good

Method used

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  • Alkali aluminosilicate glass with high elastic modulus and preparation method thereof
  • Alkali aluminosilicate glass with high elastic modulus and preparation method thereof
  • Alkali aluminosilicate glass with high elastic modulus and preparation method thereof

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preparation example Construction

[0063] The present invention also provides a method for preparing the high elastic modulus alkali aluminosilicate glass described in the above technical solution, comprising the following steps:

[0064] a) Quartz sand, alumina, dolomite, magnesia, soda ash and LaCl 3 ·7H 2 O mixed to obtain a mixture;

[0065] b) heating and melting the mixture to obtain molten glass;

[0066] c) After pouring the molten glass into a mold for molding, annealing is performed to obtain glass.

[0067] Regarding step a):

[0068] The quartz sand, alumina, dolomite, magnesia, soda ash and LaCl 3 ·7H 2 O respectively corresponds to SiO in the glass 2 、Al 2 o 3 , CaO, MgO, Na 2 O, La 2 o 3 The constituents, ie the respective oxide constituents, are introduced by starting materials of the form described above. The amount of the above-mentioned raw materials is based on the composition ratio of the corresponding oxides in the target glass, that is, according to the composition of the targ...

Embodiment 1

[0078] 1. Glass composition:

[0079] Component A:

[0080]

[0081] 2. Preparation of glass

[0082] S1. Combine quartz sand, alumina, dolomite, magnesia, soda ash and LaCl 3 ·7H 2 O mixed to obtain a mixture;

[0083] Wherein, the feeding ratio of each raw material mentioned above is based on the ratio of each oxide in the glass product.

[0084] S2. Heat and melt the above mixture at 1550° C. for 5 hours to obtain molten glass.

[0085] S4. After pouring the molten glass into a mold for molding, anneal at 580° C. for 3 hours, and cool to room temperature to obtain glass.

[0086] 3. Performance test

[0087] The following performance tests were carried out on the obtained glass samples:

[0088] (1) After cutting the obtained glass, measure the modulus of elasticity, see Table 1 for the test results.

[0089] (2) After the obtained glass is chemically strengthened and further processed, the strengthening performance is tested:

[0090] Put cut glass into KNO 3 ...

Embodiment 2

[0093] 1. Glass composition:

[0094] Component A:

[0095]

[0096] 2. Preparation of glass

[0097] S1. Combine quartz sand, alumina, dolomite, magnesia, soda ash and LaCl 3 ·7H 2 O mixed to obtain a mixture;

[0098] Wherein, the feeding ratio of each raw material mentioned above is based on the ratio of each oxide in the glass product.

[0099] S2. Heat and melt the above mixture at 1550° C. for 5 hours to obtain molten glass.

[0100] S4. After pouring the molten glass into a mold for molding, anneal at 580° C. for 3 hours, and cool to room temperature to obtain glass.

[0101] 3. Performance test

[0102] Each performance test was carried out according to the test method of Example 1, and the test results are shown in Table 1.

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Abstract

The invention provides alkali aluminosilicate glass with high elastic modulus and a preparation method thereof. The alkali aluminosilicate glass provided by the invention comprises a component A and a component B, wherein the component A comprises the following components in percentage by mass of oxides: 60%-72% of SiO2; 3%- 13% of Al2O3; 4%-14% of CaO; 5%-10% of MgO; and 12%-15% of Na2O; the mass of the component B is 0%-2.5% of the mass of the component A, and the mass of the component B is not 0%; and the component B is La2O3. The elastic modulus and the shear modulus of the glass can be effectively improved, and the glass has better strengthening performance after being chemically strengthened.

Description

technical field [0001] The invention relates to the field of glass materials, in particular to an alkali-aluminosilicate glass with high elastic modulus and a preparation method thereof. Background technique [0002] In the float ultra-thin electronic glass industry, the original glass needs to be polished and strengthened before it can be applied to electronic products. In the process of deep processing of glass, due to the action of external force, the glass will inevitably be deformed. If the deformation is too large, it will affect the normal use of the glass. There are many factors that affect the deformation of glass, and the modulus of elasticity of the glass itself is an important factor. Glass with high elastic modulus has a strong ability to resist external force without deformation, and the deformation will be small during deep processing. Currently commercially available soda-lime glass and aluminosilicate glass (such as Corning's "Gorilla" glass) have a relati...

Claims

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Application Information

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IPC IPC(8): C03C3/095C03B19/02C03B27/03
CPCC03C3/095C03B19/02C03B27/03
Inventor 孙雪峰韩正伟何智钢蔡礼貌巩瑞龙
Owner 河北视窗玻璃有限公司
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