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Composition and preparation method of scintillation glass used for preparation of scintillation fiber-optic faceplate

A technology of scintillating glass and scintillating optical fiber, which is applied in glass manufacturing equipment, glass furnace equipment, optics, etc., can solve the problems of affecting glass ultraviolet and visible light transmittance, glass light alkalinity sensitivity, poor energy resolution, etc., and achieve good Excellent application prospects, excellent anti-devitrification performance, and strong glass-forming ability

Active Publication Date: 2016-04-13
中建材光子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0009] Among the scintillating glasses that have been reported so far, most of the studies are scintillating glasses with rare earth doped ions as the luminescent center, and Ce 3+ The amount of doped scintillation glass is greatly limited due to the quenching effect, which affects its luminous intensity; and some rare earth ions are sensitive to the light alkalinity of the glass, which red-shifts the UV and visible absorption cut-off wavelengths of the glass. Thus affecting the UV and visible light transmittance of the glass, and these scintillation glass materials are mainly used as a single scintillator material, their energy resolution is poor, and high-resolution spatial imaging of the observation target cannot be achieved. So far, there is no Published report on scintillation glass applied to scintillation fiber optic panels

Method used

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preparation example Construction

[0039] The invention provides a kind of scintillation glass for preparing scintillation optical fiber panels and a preparation method thereof, which consists of the following components by weight ratio:

[0040]

[0041] In the present invention, SiO 2 It is the main body of glass forming the skeleton and the main component of the glass skeleton. SiO 2If the content is less than 10% by weight, it is difficult to obtain glass with excellent optical properties, and at the same time it will reduce the chemical resistance of the glass; SiO 2 When the content is higher than 20% by weight, the high-temperature viscosity of the glass will increase, causing the glass melting temperature to be too high. Therefore, SiO 2 The percentage by weight of is 10-20 weight%, preferably 12-15 weight%.

[0042] Al 2 o 3 Intermediate oxides belonging to glass, Al 3+ There are two coordination states, which are located in tetrahedron or octahedron. When there is enough oxygen in the glass,...

Embodiment 1

[0065]First, select the raw materials according to the glass composition of Example 1 in Table 1, so that the ingredients meet the chemical composition of the glass in Table 1. After thorough mixing and grinding, the glass batch is prepared, and then poured into a platinum crucible, at a temperature of 1450 ° C. Melt in a glass melting furnace in a reducing atmosphere, directly pass the mixed gas of nitrogen and hydrogen into the crucible equipped with batch materials to obtain a reducing atmosphere, heat it for 8 hours after melting, and manually stir the glass liquid 3 times during the heat preservation period. Improve the melting quality and clarification quality of the glass liquid. After the glass batch is melted into a homogeneous glass melt, pour the glass melt into a heat-resistant steel mold with a size of 70mm×10mm×10mm preheated at 500°C and cast it into shape. , and then move the solidified glass sample to a muffle furnace at 600°C for annealing treatment. After 3 h...

Embodiment 2

[0067] Select raw materials according to the glass composition of Example 2 in Table 1, so that the ingredients meet the chemical composition of the glass in Table 1. After thorough mixing and grinding, the glass batch is prepared, then poured into a platinum crucible, and reduced with carbon monoxide at a temperature of 1400 ° C. It is melted in the glass melting furnace in the atmosphere, and the process of obtaining the carbon monoxide gas reducing atmosphere is to place a small crucible with carbon powder or graphite powder in the melting furnace for 2 hours to keep warm. After melting, heat preservation for 9 hours. During the heat preservation period, artificially stir the molten glass for 3 times to improve the melting quality and clarification quality of the glass liquid. After the glass batch material is melted into a homogeneous glass melt, pour the glass melt into the preheating Cast into a heat-resistant steel mold with a size of 70mm×10mm×10mm at 400°C, and then mo...

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Abstract

The invention discloses a composition and preparation method of scintillation glass used for preparation of a scintillation fiber-optic faceplate. The composition comprises, by weight, 10 to 20% of SiO2, 0 to 10% of Al2O3, 20 to 45% of B2O3, 30 to 60% of La2O3, 0 to 2% of Nb2O5, 5 to 25% of Gd2O3, 0 to 4% of Lu2O3, 0 to 5% of BaO, 0 to 2% of SnO and 0 to 5% of ZnO. The invention also provides the preparation method for the scintillation glass used for preparation of the scintillation fiber-optic faceplate. The method comprises the following steps: (1) weighing the raw materials according to the above-mentioned weight percentages, mixing all the raw materials, and grinding the raw materials until the raw materials are uniform so as to obtain a batch; (2) pouring the batch into a crucible and fusing the batch so as to prepare a glass melt; (3) casting the glass melt on a preheated heat-resistant steel die, maintaining the temperature of the die in a muffle furnace and then carrying out cooling and annealing; and (4) carrying out cutting, surface grinding and polishing so as to obtain the scintillation glass. The prepared scintillation glass has the advantages of good chemical stability, high scintillation light luminescence efficiency and capacity of realizing fiber drawing.

Description

technical field [0001] The invention relates to the field of glass materials, in particular to a composition for preparing scintillation glass of a scintillation optical fiber panel and a preparation method thereof. Background technique [0002] Scintillator materials can convert high-energy rays such as X-rays into visible light, and can also achieve high-resolution spatial imaging of observation targets. With the successful development and continuous improvement of scintillator materials, human beings have made great progress in high-energy physics and biomedical technology. , space detection, industrial detection, and nuclear detection technology have been strengthened and developed, especially high-energy ray diagnosis and observation such as X-rays have been widely used in information acquisition and transmission systems of various biomedical and industrial key equipment application. Commonly used scintillator materials include inorganic scintillator crystals, scintill...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/068C03C4/12C03C13/04C03B5/16G21K4/00
CPCC03B5/16C03C3/068C03C4/12C03C13/045G21K4/00
Inventor 张磊贾金升
Owner 中建材光子科技有限公司
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