High-ZrO2-content silicate glass and preparing method thereof

A technology of silicate glass and zirconium silicate, which is applied in glass manufacturing equipment, glass furnace equipment, manufacturing tools, etc., can solve the problems of high melting temperature, poor resistance to radiation and alkali metal vapor corrosion, and reduce the The effect of melting temperature, improving radiation resistance, and excellent chemical stability

Active Publication Date: 2018-09-21
CHINA BUILDING MATERIALS ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved in the present invention is to overcome the high ZrO in the prior art 2 Content glass has defects such as poor radiation resistance and alkali metal vapor corrosion resistance, high melting temperature, etc., thus providing a high ZrO 2 Silicate glass with high content and preparation method thereof

Method used

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  • High-ZrO2-content silicate glass and preparing method thereof
  • High-ZrO2-content silicate glass and preparing method thereof
  • High-ZrO2-content silicate glass and preparing method thereof

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Experimental program
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Effect test

Embodiment 1

[0038] Raw materials were weighed and mixed according to the proportions required in Table 1, wherein, 422.4g of quartz sand, 372.96g of strontium zirconium silicate, 166.12g of strontium carbonate, 50.05g of yttrium oxide, 53.72g of boric acid, and 10.01g of terbium oxide. The mixture was treated at 700°C for 4 hours, cooled and crushed, then placed in a Pt-10Rh crucible and melted at 1560°C at a high temperature. During melting, ultrasonic vibration was performed on the molten glass in different regions. The frequency of the 3 area is 70kHz and the frequency of the upper 1 / 3 area is 20kHz. The glass liquid is stirred upwards with a double-blade stirrer, and the speed of the paddle is 60rpm, and the time is 3h. Lower the temperature to 1380°C for leakage molding, and the corresponding high ZrO can be obtained after annealing 2 content of silicate glass.

Embodiment 2

[0040]Raw materials were weighed and mixed according to the proportioning required in Table 1, wherein, 512.23g of quartz sand, 272.27g of calcium zirconate, 137.61g of calcium carbonate, 57.56g of strontium carbonate, 50.05g of yttrium oxide, and 89.53g of boric acid. The mixture was treated at 500°C for 5 hours, cooled and crushed, put into a Pt-10Rh crucible and melted at 1540°C at a high temperature. During melting, ultrasonic vibration was performed on the molten glass in different regions. The frequency of the 3 area is 80kHz and the frequency of the upper 1 / 3 area is 40kHz. The glass liquid is stirred upwards by using a double-blade stirrer. The speed of the paddle is 40rpm and the time is 6h. Lower the temperature to 1300°C for leakage molding, and obtain the corresponding high ZrO after annealing 2 content of silicate glass.

Embodiment 3

[0042] Weigh and mix raw materials according to the ratio required in Table 1, wherein, 521.99g of quartz sand, 111.11g of magnesium zirconate silicate, 91.29g of calcium zirconate silicate, 27.72g of strontium zirconium silicate, 100.1g of magnesium oxide, and 123.81g of calcium carbonate , yttrium oxide 40.04g, boric acid 53.72g, terbium oxide 10.01g. The mixture is treated at 600°C for 3 hours, cooled and crushed, then put into a Pt-10Rh crucible and melted at 1550°C at high temperature. Ultrasonic vibration is performed on the molten glass in different regions during melting. The frequency of the 3 area is 80kHz and the frequency of the upper 1 / 3 area is 30kHz. The glass liquid is stirred upwards by using a double-blade stirrer. The blade speed is 70rpm and the time is 3h. Lower the temperature to 1320°C for leakage molding, and the corresponding high ZrO can be obtained after annealing 2 content of silicate glass.

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Abstract

The invention belongs to the technical field of special glass preparing, and particularly relates to high-ZrO2-content silicate glass and a preparing method thereof. The glass is prepared from, by weight, 50-65% of SiO2, 12-18% of ZrO2, 15-25% of RO, 4-10% of Y2O3, 0-5% of B2O3 and 0-2% of Tb2O3, wherein RO is one or more of MgO, CaO and SrO. The preparing method includes the steps of raw materialpreprocessing, high-temperature founding, ultrasonic vibration bubble removing, forced stirring, material leakage forming and the like, and finally the silicate glass free of bubbles, stones and stripes is obtained. The obtained glass has good heat impact resistance, high-energy irradiation resistance, chemical stability and the like, especially excellent rubidium vapor resistance, and completelymeets the application requirements of rubidium vapor resistance glass blister packs, sodium vapor resistance modulator tubes and other special devices.

Description

technical field [0001] The invention belongs to the technical field of special glass preparation, in particular to a high-ZrO 2 Content of silicate glass and preparation method thereof. Background technique [0002] ZrO 2 It is the preferred component for making glass with good chemical stability and thermal stability, especially high anti-alkali anti-radiation glass. But due to ZrO 2 High melting point, ZrO 2 It is relatively difficult to completely melt in the glass, so the high content of ZrO 2 Glass preparation is difficult. At present, ZrO in ordinary silicate glass 2 The content is controlled below 5wt%, otherwise the glass is prone to devitrification, or even deteriorates to glassy property, seriously affecting the quality of the glass. [0003] In order to meet the application requirements of special devices, such as anti-rubidium vapor glass bulbs, anti-sodium vapor lamps, etc., high ZrO 2 Content glass is extremely important. Currently, the preparation of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/095C03B5/187C03B5/18C03B1/00
CPCC03B1/00C03B5/18C03B5/187C03C3/095
Inventor 王衍行祖成奎张超许晓典刘永华
Owner CHINA BUILDING MATERIALS ACAD
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