High borosilicate glass and preparation method thereof

A technology of high borosilicate glass and broken glass, applied in the field of glass, can solve the problems that the surface compressive stress and strength cannot meet the actual needs, the preparation process is complicated, and the cost is high.

Inactive Publication Date: 2015-01-28
XIN LI DE GLASS PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Borosilicate glass has excellent fire resistance, but it has the defects of complicated preparation process, high cost and high defective

Method used

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preparation example Construction

[0011] The invention provides a method for preparing high borosilicate glass. The preparation method comprises: at 1570-1650°C, silicon dioxide, boron oxide, aluminum oxide, sodium nitrate, sodium chloride, ammonium fluorosilicate and The cullet is melt mixed and kept warm, then cooled to make borosilicate glass;

[0012] Wherein, relative to 100 parts by weight of silicon dioxide, the content of the boron oxide is 5-10 parts by weight, the content of the aluminum oxide is 2-4.5 parts by weight, and the content of the sodium nitrate is 0.5-1.5 parts by weight , the content of the sodium chloride is 1.3-3.5 parts by weight, the content of the ammonium fluorosilicate is 0.1-0.5 parts by weight and the content of the cullet is 25-30 parts by weight.

[0013] In the above-mentioned method for preparing borosilicate glass, the raw materials for the silicon dioxide can be selected in a wide range, in order to make the cesium potassium glass have more excellent fire resistance and su...

Embodiment 1

[0020] At 1600°C, 100kg of quartz sand, 7kg of boric acid, 3kg of alumina, 1kg of sodium nitrate, 2kg of sodium chloride, 0.3kg of ammonium fluorosilicate and 28kg of cullet were mixed and held for 2.5 hours, then cooled at 130°C / min to High borosilicate glass A1 was prepared at 25°C. Among them, the particle size of the cullet is 30 mm.

[0021] The refractory integrity time and surface compressive stress parameters of the high borosilicate glass are shown in Table 1.

Embodiment 2

[0023] At 1570°C, mix 100kg of quartz sand, 5kg of boric acid, 2kg of alumina, 0.5kg of sodium nitrate, 1.3kg of sodium chloride, 0.1kg of ammonium fluorosilicate and 25kg of cullet and keep it warm for 2 hours, then cool at 125°C / min High borosilicate glass A2 was prepared at 25°C. Among them, the particle size of the cullet is 20mm.

[0024] The refractory integrity time and surface compressive stress parameters of the high borosilicate glass are shown in Table 1.

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Abstract

The invention discloses high borosilicate glass and a preparation method thereof. The preparation method comprises the following steps: fusing, mixing and insulating silicon dioxide, boric oxide, aluminum oxide, sodium nitrate, sodium chloride, ammonium fluosilicate and cullet at 1570-1650 DEG C; and then cooling to prepare the high borosilicate glass, wherein based on 100 parts of silicon dioxide, the content of boric oxide is 5-10 parts by weight, the content of aluminum oxide is 2-4.5 parts by weight, the content of sodium nitrate is 0.5-1.5 parts by weight, the content of sodium chloride is 1.3-3.5 parts by weight, the content of ammonium fluosilicate is 0.1-0.5 part by weight and the content of cullet is 25-30 parts by weight. The high borosilicate glass prepared by the method disclosed by the invention has more excellent fire resistance and surface compressive stress.

Description

technical field [0001] The invention relates to glass, in particular to a high borosilicate glass and a preparation method thereof. Background technique [0002] According to the definition and classification of my country's national standard "Safety Glass Fireproof Glass for Buildings" (GB16763.1-2001), fireproof glass is divided into single piece fireproof glass and composite fireproof glass. Monolithic fire-resistant glass (DFB) is a special glass composed of single-layer glass and meeting the requirements of the corresponding fire-resistant grade. [0003] At present, monolithic fireproof glass mainly includes borosilicate glass and tempered glass. Borosilicate glass has excellent fire resistance, but it has the defects of complicated preparation process, high cost and high defective rate. Tempered glass also has excellent fire performance, but its surface compressive stress and strength are difficult to meet actual needs. Contents of the invention [0004] The obje...

Claims

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Application Information

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IPC IPC(8): C03C6/02C03C3/091
CPCC03C3/118C03C2201/11C03C2201/14C03C2201/24
Inventor 林恢龙王宝宁
Owner XIN LI DE GLASS PROD
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