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High-zirconium borosilicate glass and preparation method thereof

A silicate glass, high zirconium boron technology, applied in the field of high zirconium borosilicate glass and its preparation, can solve the problems of poor glass uniformity, difficult engineering, small size, etc., achieve large negative anomalous dispersion, high Optical uniformity, the effect of solving the problem of high temperature precipitation

Active Publication Date: 2015-03-25
CHINA BUILDING MATERIALS ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These measures in the preparation of ZrO 2 The content of 5-10wt.% borosilicate glass still has great advantages, but there are big obstacles in the preparation of high zirconium borosilicate glass (zirconia content ≥ 10wt.%), such as large energy consumption, glass Poor uniformity, small size, difficult engineering, etc.

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  • High-zirconium borosilicate glass and preparation method thereof

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preparation example Construction

[0025] A preparation method of high zirconium borosilicate glass, comprising the following steps:

[0026] (1) Obtain nano-scale ZrSiO 4 Powder;

[0027] (2) Weigh the raw materials according to the distribution ratio of the glass components, and mix the raw materials evenly to obtain a mixture; in the glass components, ZrO 2 Components based on the ZrSiO 4 Introduced in powder form, SiO 2 Components are ZrSiO 4 The powder and quartz sand are introduced together, and other components are introduced in the form of corresponding oxides, carbonates or nitrates;

[0028] (3) Put the mixed material into the crucible and melt it. After the mixed material is completely melted into glass liquid, then pass O through the pipeline to the bottom of the glass liquid. 2 Carry out bubbling, after bubbling ends, stir by agitator;

[0029] (4) After the temperature is lowered, it is formed by leakage. After the glass is shaped, it is moved into a muffle furnace for annealing to obtain hi...

Embodiment 1

[0049] Raw materials are weighed and batched according to the ratio required in Table 1, and put into a V-shaped mixer for mixing to obtain a mixture, wherein ZrO 2 Nanoscale ZrSiO synthesized by hydrothermal method 4 Powder. Use a Pt crucible to melt at 1450 ° C. After the mixture is completely melted into a glass liquid, high-purity O is introduced to the bottom of the glass liquid through a Pt tube. 2 For bubbling, the flow rate is 0.5L / min, and the time is 1.5h. After bubbling, the molten glass was mechanically stirred with a frame-type Pt stirrer at a speed of 50 rpm for 3 hours. After the temperature is lowered, it is formed by leaking material. After the glass is set, it is moved into a muffle furnace heated to 520°C in advance for annealing for 6 hours. The corresponding high zirconium borosilicate glass is obtained after physical polishing. The relevant properties of the glass are shown in Table 1.

Embodiment 2

[0051] Raw materials are weighed and batched according to the ratio required in Table 1, and put into a V-shaped mixer for mixing to obtain a mixture, wherein ZrO 2ZrSiO synthesized by hydrothermal method 4 Powder. Use a Pt crucible to melt at 1480 ° C. After the mixture is completely melted into a glass liquid, pass high-purity O2 to the bottom of the glass liquid through a Pt tube. 2 For bubbling, the flow rate is 0.8L / min, and the time is 2h. After bubbling, the molten glass was mechanically stirred with a frame-type Pt stirrer at a speed of 60 rpm for 4 hours. After the temperature is lowered, it is formed by leaking material. After the glass is set, it is moved into a muffle furnace that has been heated to 560°C for annealing for 4 hours. The corresponding high zirconium borosilicate glass is obtained after physical polishing. The relevant properties of the glass are shown in Table 1.

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Abstract

The invention discloses high-zirconium borosilicate glass and a preparation method thereof, belonging to the technical field of preparation of glass. The method comprises the following steps: (1) obtaining nano-scale ZrSiO4 powder; (2) weighing raw materials according to a mixture ratio of components of the glass, and uniformly mixing the raw materials to obtain a mixture, wherein in the components of the glass, a ZrO2 component is introduced in a form of ZrSiO4 powder, a SiO2 component is jointly introduced in the forms of ZrSiO4 powder and quartz sand, and other components are introduced in the forms of corresponding oxides, carbonates or nitrates; (3) putting the mixture into a crucible for melting, further introducing O2 to the bottom of molten glass through a pipeline after the mixture is completely molten to form the molten glass for bubbling and stirring by a stirrer; and (4) cooling, then forming in a material leaking way, and transferring into a muffle furnace for annealing after shaping of the glass so as to obtain the high-zirconium borosilicate glass. The high-zirconium borosilicate glass prepared by the method disclosed by the invention has the advantages of high optical uniformity, relatively large negative anomalous dispersion and excellent chemical stability.

Description

technical field [0001] The invention relates to the technical field of glass preparation, in particular to a high zirconium borosilicate glass and a preparation method thereof. Background technique [0002] Introduce a certain amount of ZrO in borosilicate glass components 2 , can significantly improve the water resistance, alkali resistance, dispersion constant and mechanical properties of glass. But it should be noted that the introduction of ZrO 2 While improving glass performance, it brings many problems to glass preparation, such as increased melting temperature, prolonged clarification time, component precipitation, and increased crystallization tendency, which will lead to loss of control of glass components, increase energy consumption and reduce finished products. Rate. Therefore, ZrO in the glass 2 The content is limited, ZrO in ordinary borosilicate glass 2 The content is controlled below 5wt.%, otherwise it is unfavorable for glass preparation. With the adv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/066
CPCC03C3/066
Inventor 王衍行祖成奎何坤韩滨陈江赵慧峰刘永华张瑞
Owner CHINA BUILDING MATERIALS ACAD
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