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Alkali-resistant glass and preparation method thereof

An alkali-resistant glass technology, applied in the field of alkali-resistant glass and its preparation, can solve the problems of few research reports on optical properties, and achieve high transmittance of characteristic spectral lines, high optical transmittance, and low consumption of rubidium Effect

Active Publication Date: 2020-09-08
CHINA BUILDING MATERIALS ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with Schott 8436 glass, Corning 1720 glass has excellent processability and longer material properties (Tw-Ts=373℃), but the rubidium consumption (μg) of Corning 1720 glass is: (1.4±0.4)×t 1 / 2 (t is the reaction time / h, the same below), and the rubidium consumption (μg) of Schott 8436 glass is: (0.9±0.15)×t 1 / 2 , significantly lower than Corning 1720 glass rubidium consumption, and the two brands of glass are mostly used as special functional glasses, and their optical properties are rarely reported

Method used

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  • Alkali-resistant glass and preparation method thereof
  • Alkali-resistant glass and preparation method thereof
  • Alkali-resistant glass and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0055] This embodiment provides an alkali-resistant glass and a preparation method thereof.

[0056] The components of the alkali-resistant glass in this embodiment, the weight percentage of each component and the physical properties of the glass obtained are shown in Table 1.

[0057] The preparation method of alkali-resistant glass in this embodiment is: use quartz sand, boric acid, sodium carbonate or sodium nitrate, lithium carbonate, barium nitrate or barium carbonate, basic magnesium carbonate, calcium carbonate, strontium carbonate, aluminum hydroxide, Zirconium and hafnium dioxide are mixed as raw materials, and 0.5% of the clarifier NaCl is added to the total weight of the batch. The batch is melted at a high temperature of 1550°C, mechanically stirred, and clarified by auxiliary bubbling, and then leaked or pressed into a glass blank at 1080°C; The glass blanks are in the form of strips, plates, round rods, tubes and the like.

Embodiment 2

[0059] This embodiment provides an alkali-resistant glass and a preparation method thereof.

[0060] The components of the alkali-resistant glass in this embodiment, the weight percentage of each component and the physical properties of the glass obtained are shown in Table 1.

[0061] In the preparation method of alkali-resistant glass in this example, the clarifying agent is NaCl, which is added as 0.2% of the total weight of the batch; the melting clarification temperature is 1500 ° C; the molding temperature of the glass is 1150 ° C, other preparation methods are the same as in Example 1 same.

Embodiment 3

[0063] This embodiment provides an alkali-resistant glass and a preparation method thereof.

[0064] The components of the alkali-resistant glass in this embodiment, the weight percentage of each component and the physical properties of the glass obtained are shown in Table 1.

[0065] In the preparation method of the alkali-resistant glass in this example, no clarifying agent is added; the melting and clarifying temperature is 1450°C; the forming temperature of the glass is 1200°C, and other preparation methods are the same as in Example 1.

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Abstract

The invention relates to alkali-resistant glass and a preparation method thereof. The alkali-resistant glass is prepared from the following components by mass percentage: 45-68% of SiO2; 3-5% of B2O3;1-3% of Al2O3; 9-14% of first component; 9-19.5% of second component; 8-12.5% of ZrO2; 0-1% of HfO2; The preparation of the glass comprises the following steps: mixing the raw materials according tothe formula ratio to obtain a first mixture; adding a clarifying agent into the first mixture and then mixing to obtain a second mixture; melting and mechanically stirring the second mixture, supplemented by bubble clarifying, seeping moulding or compression moulding. The alkali-resistant glass has excellent resistance to corrosion from alkali metal and from aqueous alkali, and also has great optical transmittance and long workability, indicating outstanding processing performance of the glass.

Description

technical field [0001] The invention relates to a special glass material, in particular to an alkali-resistant glass and a preparation method thereof. The alkali-resistant glass has good corrosion resistance to alkali metals and can be applied to various fields requiring alkali-resistant glass materials. Background technique [0002] As a kind of special glass material, alkali-resistant glass is usually used in the building materials industry. Most of the alkali-resistant glass is made of alkali-resistant glass fiber / alkali-resistant glass fiber for use in alkaline environments. This alkaline environment generally refers to the alkaline solution environment. Different countries and companies have formulated different alkali resistance standards. For example, the DIN ISO 695 standard implemented by SCHOTT company is to place the glass surface in a boiling alkali solution (solution concentration: 1mol / L NaOH, 0.5mol / L Na 2 CO 3 ) for 3 hours, evaluate its alkali resistance ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C3/093
CPCC03C3/093
Inventor 曹振博贾金升吕学良孙勇李开宇薄铁柱史小玄洪升郑京明
Owner CHINA BUILDING MATERIALS ACAD
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