A kind of alkali-free high aluminum borosilicate glass and its preparation method

A silicate glass and high-alumina-boron technology, which is applied in glass manufacturing equipment, glass furnace equipment, manufacturing tools, etc., can solve the problems of alkali-free high-alumina borosilicate glass clarification difficulties, environmental pollution, and poor uniformity. Achieve the effects of increasing the clarification temperature range, reducing the thermal expansion coefficient, and good clarification effect

Active Publication Date: 2021-05-04
(CNBM) BENGBU DESIGN & RES INST FOR GLASS IND CO LTD
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Problems solved by technology

[0004] The purpose of the present invention is to provide an alkali-free high-alumina borosilicate glass and its preparation method in order to effectively solve the shortcomings of difficult clarification, poor uniformity and environmental pollution during the preparation process of alkali-free high-alumina borosilicate glass

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  • A kind of alkali-free high aluminum borosilicate glass and its preparation method

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[0025] The specific embodiments of the present invention will be described in detail below, and the specific embodiments described here are only used to illustrate and explain the present invention, but not to limit the present invention.

[0026] One, a kind of alkali-free high alumina borate glass provided by the present invention is made of the following raw materials in weight percentage:

[0027] SiO 2 54.5~63.5%

[0028] al 2 o 3 10~15%

[0029] Al(OH) 3 4.5~9.5%

[0030] CaO 3~15%

[0031] B 2 o 3 6~13%

[0032] MgO 2~9%

[0033] SrO 5~10%

[0034] SnO 0.05~0.3%

[0035] ZnSO 4 0.1~0.35%

[0036] Two, the preparation method of a kind of alkali-free high alumina borate glass provided by the present invention comprises the following steps:

[0037] 1) Weigh the above-mentioned various raw materials according to the above-mentioned weight percentages, and mix them uniformly through the mixing system to obtain glass batch materials;

[0038] 2) Melt the...

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Abstract

The invention relates to an alkali-free high-alumina borosilicate glass, which is made of the following raw materials in weight percentage: 54.5-63.5% SiO 2 , 10-15% Al 2 o 3 , 4.5~9.5% Al(OH) 3 , 3~15% CaO, 6~13% B 2 o 3 , 2-9% MgO, 5-10% SrO; 0.05-0.3% SnO, 0.1-0.35% ZnSO 4 After the above-mentioned components are melted and molded according to the glass preparation process, the alkali-free high-aluminosilicate glass used for electronic information display can be satisfied; the performance index of the alkali-free high-aluminosilicate glass prepared by this method can stably reach: The point is greater than 670°C, and the thermal expansion coefficient is less than 3.70×10 ‑6 / °C, visible light transmittance greater than 91%, density less than 2.55g / cm 3 , in unit area (cm 2 ) Bubbles larger than 0.5mm are not visible.

Description

technical field [0001] The invention relates to the technical field of special glass, in particular to an alkali-free high aluminum borosilicate glass and a preparation method thereof. Background technique [0002] Since the beginning of the 21st century, with the development of display technology, new display technology has gradually entered people's life and work, and has become one of the main means of disseminating knowledge and information in today's society. As the main window and device of the display system - the display It has also developed rapidly. At present, the advantages of thin film transistor liquid crystal display (TFT-LCD) technology, such as large display size, high definition, thinness, and good environmental protection performance, are gradually recognized by consumers, and have developed into the current mature mainstream color flat panel display technology. [0003] Alkali-free high-alumina borosilicate glass is the most ideal substrate material for ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C6/04C03C1/00C03B5/16
CPCC03B5/16C03C1/00C03C1/004
Inventor 彭寿马立云赵凤阳曹欣柯震坤单传丽石丽芬崔介东王萍萍仲召进王巍巍高强李金威韩娜倪嘉李常青周刚
Owner (CNBM) BENGBU DESIGN & RES INST FOR GLASS IND CO LTD
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