Alkali-resistant aluminosilicate glass and application thereof

An aluminosilicate glass and alkali-resistant technology, applied in the field of special glass materials and their preparation, can solve the problems of reducing the transmittance of windows, high transmittance, increasing the complexity of replacement operations, and improving production and labor conditions. , High transmittance, good for environmental protection

Active Publication Date: 2019-09-17
鲁米星特种玻璃科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For this reason, the window glass needs a high transmittance and high temperature and high pressure resistance to high temperature water vapor and alkali resistance to the corrosion of the glass, and it is necessary to paste a layer of mica sheet on the side of the glass in contact with the liquid, which increases the replacement cost. The complex and cumbersome operation reduces the transmittance of the window

Method used

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  • Alkali-resistant aluminosilicate glass and application thereof
  • Alkali-resistant aluminosilicate glass and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Application in concrete reinforcement:

[0063] Chemical composition (wt.%), SiO 2 : 56%; Al 2 o 3 : 16%; MgO: 3%; CaO: 9%; BaO: 2%; ZrO 2 : 7%; TiO 2 : 3%; Ta 2 o 5 : 3.9%; Y 2 o 3 : 0.1%;

[0064] First, select the glass raw material according to the glass composition of Example 1 in Table 1, the raw material requirements, quartz sand (high purity, 150 μm oversize is less than 1%, 45 μm undersize is less than 30%, Fe 2 o 3content less than 1PPm), alumina powder (average particle size 50μm), basic magnesium carbonate (analytical pure), calcium carbonate (analytical pure, average particle size 250μm), barium carbonate (analytical pure, purity ≥ 99.0%), zirconia (analytical pure), titanium oxide (analytical pure), tantalum pentoxide (5N), yttrium trioxide (5N), and the main raw materials in the glass raw materials are treated with iron removal to improve the purity of the glass raw materials oxides such as Fe 2 o 3 etc. are strictly controlled, and the finis...

Embodiment 2

[0066] Applications in lighting or display technology:

[0067] Chemical composition (wt.%), SiO 2 : 62%; Al 2 o 3 : 17%; MgO: 4%; CaO: 6%; BaO: 1%; ZrO 2 : 4%; TiO 2 : 1%; Ta 2 o 5 : 1%; Y 2 o 3 : 4%;

[0068] The actual composition of the glass refers to Example 2 in Table 1, using the same raw materials and raw material requirements as in Example 1, and adopting the same test conditions as in Example 1. Table 1 shows the basic properties of the samples. (1) The average coefficient of linear expansion at 30-300°C is 45×10 -7 / °C; (2) Bending strength 260MPa; (3) Chemical stability level A1, in line with lighting or display technology applications.

Embodiment 3

[0070] Applications in container glass for chemically aggressive liquids:

[0071] Chemical composition (wt.%), SiO 2 : 58%; Al 2 o 3 : 18%; MgO: 3.5%; CaO: 8.5%; BaO: 1%; ZrO 2 : 8%; TiO 2 : 2%; Ta 2 o 5 : 0.5%; Y 2 o 3 : 0.5%;

[0072] The actual composition of the glass refers to Example 3 in Table 1, using the same raw materials and raw material requirements as in Example 1, and adopting the same test conditions as in Example 1. Table 1 shows the basic properties of the samples. (1) The average coefficient of linear expansion at 30-300°C is 46×10 -7 / °C; (2) Bending strength 300MPa; (3) Chemical stability level A1, suitable for application in container glass for chemically erosive liquids.

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Abstract

The invention discloses alkali-resistant aluminosilicate glass material and an application thereof. The glass is composed of the following components, in percentages by weight: 54-64% of SiO2, 13-20% of Al2O3, 0.4-5% of MgO, 0.5-9% of CaO, 0.1-2% of BaO, 4-10% of ZrO2, 0.5-5% of TiO2, 0.5-5% of Ta2O5, and 0.1-5% of Y2O3. The alkali-resistant aluminosilicate glass provided by the invention has the advantages of a stable structure, good chemical stability, high mechanical strength and high transmittance, and does not contain elements harmful to the environment, such as lead, arsenic and cadmium, the glass has less corrosion even the glass is used in a high-temperature high-pressure environment for a long time, and the glass has excellent alkali resistance, and is suitable for use in glass of a high-temperature high-pressure liquid level meter observation window.

Description

technical field [0001] The invention relates to the technical field of special glass material and its preparation, in particular to an alkali-resistant aluminosilicate glass and its application. Background technique [0002] As a special glass material, alkali-resistant glass is widely used in industry and building materials industry. Most alkali-resistant glass is made of alkali-resistant glass fiber or block for use in alkaline environments. The alkaline environment here 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 according to the weight loss of the glass, and the weight loss is less than 75mg / 100cm 2 , rated as A1 grade, with a weight loss of 7...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C4/20C03C3/095C04B14/22C03B1/00C03C13/02C03C4/02
CPCC03C4/20C03C3/095C04B14/44C03B1/00C03C13/002C03C4/02
Inventor 陈玉栋陈嘉慧张芬香
Owner 鲁米星特种玻璃科技股份有限公司
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