A kind of alkali-resistant aluminosilicate glass and its application

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, increasing the complexity of replacement operations, high transmittance, etc., and improving production and labor conditions. , Good chemical stability, high transmittance effect

Active Publication Date: 2022-05-17
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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  • A kind of alkali-resistant aluminosilicate glass and its application
  • A kind of alkali-resistant aluminosilicate glass and its application

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] At first, select glass raw material according to table 1 embodiment 1 glass composition, raw material requirement, quartz sand (high purity, 150 μ m sieve is below 1%, 45 μ m sieve is below 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 finished glass Fe 2 o 3 The c...

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 an alkali-resistant aluminosilicate glass material and its application. The glass consists of the following components in weight percent: 54-64% SiO 2 , 13‑20% Al 2 o 3 , 0.4‑5% MgO, 0.5‑9% CaO, 0.1‑2% BaO, 4‑10% ZrO 2 , 0.5‑5% TiO 2 , 0.5‑5% Ta 2 o 5 , 0.1‑5%Y 2 o 3 . The alkali-resistant aluminosilicate glass of the present invention has stable structure, good chemical stability, high mechanical strength, high transmittance, and does not contain elements harmful to the environment such as lead, arsenic, and cadmium, and can withstand high temperature and high pressure for a long time. It has less corrosion and excellent alkali resistance when used under the same conditions, and is suitable for the observation window glass of high temperature and high pressure liquid level gauges.

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 Patents(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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