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Thin-type CaO-Al2O3-SiO2 system glass ceramics and preparation

A technique of cao-al2o3-sio2 and glass-ceramics, applied in the field of glass, can solve the problems of large weight per unit area, large consumption of raw materials, and high energy consumption, and achieve the effects of enhanced adaptability, improved product quality, and guaranteed quality

Inactive Publication Date: 2013-04-24
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As a result, the weight per unit area is large, the output is low, the raw material consumption of the product is large, and the energy consumption is high.

Method used

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  • Thin-type CaO-Al2O3-SiO2 system glass ceramics and preparation

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1. Preparation of glass-ceramic:

[0020] Ingredients (mass percentage): Quartz sand 52.4%, alumina 4.9%, calcium carbonate 24.7%, zinc oxide 1.7%, barium carbonate 4.2%, sodium carbonate 7.7%, potassium carbonate 1.8%, borax 2.3%, antimony trioxide 0.4% ingredients. This formula is characterized by using K 2 O to partially replace ZnO, K 2 O not only reduces the viscosity of the glass, but the surface tension of the glass increases with K 2 The increase of O instead of ZnO content decreases, which is beneficial to the discharge of bubbles and the flattening of the surface during sintering.

[0021] Preparation of glass-ceramics: Mix the weighed raw materials to prepare a glass batch. The batch material is melted and clarified at 1450±10°C, and the melted glass liquid is water-quenched into 0.5-6mm glass particles, and then dried and classified. Spread the dry glass granules on the refractory mold, the particle size of the upper layer is 2-3mm, and the t...

Embodiment 2

[0023] Embodiment 2. Preparation of glass-ceramic:

[0024] Ingredients (mass percentage): Quartz sand 51.6%, alumina 4.2%, calcium carbonate 25.2%, zinc oxide 1.7%, barium carbonate 4.3%, sodium carbonate 7.9%, magnesium oxide 2.5%, borax 2.3%, antimony trioxide 0.4% ingredients. The feature of this formula is that ZnO is partially replaced by MgO. The introduction of MgO can promote the precipitation of wollastonite crystal phase in the glass, and can enhance the compactness and mechanical strength of the glass.

[0025] Preparation of glass-ceramics: Mix the weighed raw materials to prepare a glass batch. The batch material is melted and clarified at 1450±10°C, and the melted glass liquid is water-quenched into 0.5-6mm glass particles, and then dried and classified. Spread the dry glass granules on the refractory mold, the particle size of the upper layer is 2-3mm, and the thickness of the paving is 20mm. After paving and scraping, place it in a high-temperature experime...

Embodiment 3

[0027] Embodiment 3. Preparation of glass-ceramic:

[0028] Ingredients (mass percentage): Quartz sand 51.3%, alumina 4.1%, calcium carbonate 25.1%, zinc oxide 0.4%, barium carbonate 4.3%, sodium carbonate 7.8%, potassium carbonate 1.8%, magnesium oxide 2.5%, borax 2.3% , Antimony trioxide 0.4% ingredients. This formulation is characterized by the use of MgO and K 2 O is mixed and introduced to replace ZnO, so that the content of ZnO is further reduced and the cost of raw materials is saved.

[0029]Preparation of glass-ceramics: Mix the weighed raw materials to prepare a glass batch. The batch material is melted and clarified at 1450±10°C, and the melted glass liquid is water-quenched into 0.5-6mm glass particles, and then dried and classified. Spread the dry glass granules on the refractory mold, the particle size of the upper layer is 2-3mm, and the thickness of the paving is 20mm. After paving and scraping, place it in a high-temperature experimental furnace for crysta...

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Abstract

The invention relates to CaO-Al2O3-SiO2 system glass ceramics, which comprises the following chemical compositions in percentage by weight: 60.0 to 70.0 percent of SiO2, 5.0 to 10.0 percent of Al2O3, 16.5 to 18.0 percent of CaO, 0 to 2.5 percent of ZnO, 4.0 to 6.0 percent of BaO, 5.0 to 6.0 percent of Na2O, 0.5 to 2.0 percent of K2O, 1.0 to 3.0 percent of B2O3, 0.5 to 1.0 percent of Sb2O3 and 1.0 to 3.0 percent of MgO. The preparation method of the system glass ceramics comprises the following steps: stirring the compositions evenly; putting the compositions in a ceramic crucible and then putting in a MoSi2 furnace for heating and heat preservation; forming 0.5 to 6mm glass granules by water quenching and then drying the granules; spreading the granules in a die made of fireproof material, and putting the die in a high-temperature furnace for heating and heat preservation to crystallize and flatten the glass granules; and finally, annealing and cooling to room temperature. The thin-type CaO-Al2O3-SiO2 system glass ceramics has the advantages of low cost, ideal performance, thin type and wide application.

Description

technical field [0001] The present invention relates to glass, and in particular to a low-cost and thin CaO-Al for construction 2 o 3 -SiO 2 System glass-ceramic and its preparation method. Background technique [0002] In recent years, due to the bright colors, small color difference and never fading of glass-ceramic decorative panels; dense structure, clear texture; hard wear resistance, weather resistance, corrosion resistance and other advantages are increasingly recognized and recognized by people. Glass-ceramic has been used in many ways in the construction industry, and has been used in high-end public buildings such as airports, stations, office buildings, subways, hotels, hotels, and high-end housing places such as villas. Glass-ceramic plates are high-grade and high-consumption products, and the current market price is relatively high. High cost and high price have become a key obstacle to expand the market. In the composition of production costs, fuel costs a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C10/00
Inventor 程金树何峰谢俊陆平郑伟宏全健肖子凡
Owner WUHAN UNIV OF TECH
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