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Alkali-free aluminoborosilicate glass

A technology of borosilicate glass and alkali aluminum, which is applied in glass production, instruments, optics, etc., can solve the problems of poor glass uniformity, large boron volatilization, furnace erosion, etc., and achieve high hardness and high Young's modulus amount, high strain point effect

Active Publication Date: 2020-09-01
(CNBM) BENGBU DESIGN & RES INST FOR GLASS IND CO LTD +1
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of large volatilization of boron in the melting process of the existing borosilicate glass system, serious corrosion of the kiln, and poor uniformity of the product glass, and to provide an alkali-free aluminoborosilicate glass

Method used

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  • Alkali-free aluminoborosilicate glass

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preparation example Construction

[0036] A kind of preparation method of alkali-free aluminum borosilicate glass, adopts the proportion described in table 1-5, wherein SiO 2 、Al 2 o 3 , B 2 o 3 , MgO, CaO, SrO, ZrO 2 ,P 2 o 5 It means that the composition contains Si-containing compounds, Al-containing compounds, B-containing compounds, Mg-containing compounds, Ca-containing compounds, Sr-containing compounds, Zr-containing compounds, and P-containing compounds, (such as: carbonates containing the aforementioned elements, Nitrates, sulfates, oxides, etc., the content of each component is based on the oxides of each element), according to the different glass preparation processes, the composition contains a clarifying agent, there is no special limitation on the specific selection of the clarifying agent, you can Various choices commonly used in this field; Under heating condition, described SiO 2 、Al 2 o 3 , B 2 o 3 , MgO, CaO, SrO, ZrO 2 ,P 2 o 5 After mixing evenly, carry out high-temperature m...

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Abstract

The invention relates to alkali-free aluminoborosilicate glass which is characterized by being prepared from the following raw materials in percentage by weight: 60-72% of SiO2, 13-18% of Al2O3, 8.5-10% of B2O3, 1-4.5% of MgO, 3-8% of CaO, 1-5% of SrO, 0.5-2% of ZrO2, 1-5% of P2O5 and 0.1-0.5% of SnO2, wherein the percentage of SiO2 + Al2O3 is 76-85%, (MgO + CaO + SrO) / Al2O3 is 0.4-0.7%, the totalamount of the alkaline earth metal oxide is 5-11.5%, B2O3 / (B2O3 + ZrO2 + P2O5) is 0.6-0.9%, and (ZrO2 + P2O5) / (MgO + CaO + SrO) ranges from 0.15% to 0.8%. The glass has the beneficial effects that the glass has the characteristics of high strain point, high Young modulus, high hardness, high specific modulus, proper thermal expansion coefficient, low thermal shrinkage rate and the like, the boronvolatilization rate is as low as 5.6-10.5%, and the phenomenon of uneven components caused by boron volatilization is effectively controlled; the glass is suitable for a float molding process, does not contain toxic substances such as As2O3 and Sb2O3, is environment-friendly, and is suitable for large-scale industrial production; and the glass is particularly suitable for a glass substrate for anLCD / OLED display.

Description

technical field [0001] The invention belongs to the field of glass production, and relates to various glass substrates for displays, in particular to an alkali-free aluminoborosilicate glass. Background technique [0002] With the development of photoelectric display technology and the popularization of electronic products, liquid crystal displays are constantly being updated, and people's performance requirements for displays are constantly improving. Light and thin, high-resolution, and ultra-high-definition gradually occupy the display market and become mainstream features. Therefore, the technology of glass substrates for displays is constantly innovating, and the requirements for the characteristics of glass substrates are becoming more and more stringent. In the flat panel display panel manufacturing process, a metal or oxide film needs to be plated on the surface of the glass substrate. The alkali metal ions in the substrate glass diffuse into the film and damage the ...

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Application Information

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IPC IPC(8): C03C3/097H01L27/32G02F1/1333
CPCC03C3/097G02F1/1333H10K59/00Y02P40/57C03C3/093C03B18/02H01L27/1218
Inventor 彭寿张冲沈玉国曹志强金良茂朱明柳
Owner (CNBM) BENGBU DESIGN & RES INST FOR GLASS IND CO LTD
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