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High-refractive-index ultraviolet-transparent glass and manufacturing method thereof

A high refractive index, outer glass technology, applied in the field of glass materials, can solve the problems of not being suitable for the process requirements of optical fiber panel image intensifiers, poor chemical stability of glass, etc., and achieve good acid resistance chemical stability, high refractive index, and transmission high rate effect

Active Publication Date: 2015-03-11
CHINA BUILDING MATERIALS ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are many patent documents on UV transparent glass, the refractive index of glass is generally less than 1.70, and most of them are phosphate glass or fluoride glass, and the chemical stability of glass is poor, so it is not suitable for making optical fiber panels and subsequent products. The technological requirements of the image intensifier, and for the refractive index greater than 1.80, there is no report on the UV-transparent glass suitable for the preparation of optical fiber panels

Method used

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  • High-refractive-index ultraviolet-transparent glass and manufacturing method thereof
  • High-refractive-index ultraviolet-transparent glass and manufacturing method thereof
  • High-refractive-index ultraviolet-transparent glass and manufacturing method thereof

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Embodiment 1

[0045] First, select the raw material according to the glass composition in Example 1 of Table 1, the raw material requirements, quartz sand (high purity, 150 μm oversize is less than 1%, 45 μm undersize is less than 30%, Fe 2 o 3 Content less than 1PPm), boric acid or boric anhydride (400μm sieve is less than 10%, 63μm sieve is less than 10%), calcium carbonate (analytical pure, average particle size 250μm), strontium carbonate (analytical pure, purity ≥ 99.0 %), barium carbonate (analytical pure, purity ≥ 99.0%), dilanthanum trioxide (5N), niobium pentoxide (5N), yttrium trioxide (5N), zirconia (analytical pure), titanium dioxide (analytical pure ), and oxides of variable valence elements such as Fe in glass raw materials 2 o 3 etc. are strictly controlled, and the finished glass Fe 2 o 3 The content of the reducing agent is less than 1PPm, and the ingredients meet the glass chemical composition in Table 1. Carbon powder or tartaric acid is introduced into the glass batc...

Embodiment 2

[0047] 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 a melting process system of melting at 1400 ° C for 10 hours and the same test conditions as in Example 1, and the carbon powder is 0.5% , 0.5% tartaric acid, in Table 1 shows the basic properties of the samples. (1) The refractive index is 1.85; (2) The ultraviolet light transmittance reaches 79% when the wavelength is 350nm; (3) The average linear expansion coefficient of 30-300°C is 95×10 -7 / °C.

Embodiment 3

[0049] The actual composition of the glass refers to Example 3 in Table 1, uses the same raw materials and raw material requirements as in Example 1, and adopts a melting process system of melting at 1600 ° C for 6 hours and the same test conditions as in Example 1, and the carbon powder is 0.04% , 0.06% tartaric acid, in Table 1 shows the basic properties of the sample. (1) The refractive index is 1.77; (2) The ultraviolet light transmittance reaches 73% when the wavelength is 350nm; (3) The average linear expansion coefficient of 30-300°C is 85×10 -7 / °C.

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Abstract

The invention discloses high-refractive-index ultraviolet-transparent glass and a manufacturing method thereof. The high-refractive-index ultraviolet-transparent glass comprises following components, by weight, 5-15% of SiO2, 10-25% of B2O3, 0-5% of CaO, 0-5% of SrO, 10-50% of BaO, 10-50% of La2O3, 5-15% of Nb2O5, 0-5% of Y2O3, 0-5% of ZrO2 and 0-5% of TiO2. The invention also provides the manufacturing method of the high-refractive-index ultraviolet-transparent glass. The method includes following steps: placing quartz sand, boronic acid or boron anhydrous, calcium carbonate, strontium carbonate, barium carbonate, lanthanum oxide, niobium pentoxide, yttria, zirconium oxide and titanium dioxide according to requirement in a formula into a pure-platinum crucible with addition of a reduction agent, melting the materials at 1400-1600 DEG C for 6-10 hours with stirring for 2-3 times during the melting process, and casting the molten glass into a specified specification. The invention also discloses an application of the high-refractive-index ultraviolet-transparent glass in an ultraviolet-transparent optical fiber plate. The high-refractive-index ultraviolet-transparent glass is high in refractive index and transmittance and is good in chemical stability.

Description

technical field [0001] The invention relates to the field of glass materials, in particular to a high-refractive-index ultraviolet-transmitting glass and a preparation method thereof. Background technique [0002] Optical fiber panels (including optical fiber panels, fiber optic inverters, fiber optic cones, etc.) are photoelectric imaging devices with excellent performance. Combined with the drawing process, the product has good air tightness, small distortion, few spots, high resolution, clear and real image transmission, zero thickness optically, simple structure, small size, light weight, and large numerical aperture. High light transmission efficiency, small inter-stage coupling loss, high coupling efficiency can improve edge image quality and so on. The optical fiber panel is a high-resolution image transmission element formed by tens of millions of optical fibers arranged in parallel through hot-melt pressing, and is a key material for image intensifiers and high-def...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/068C03C4/00
Inventor 贾金升张磊李国恩
Owner CHINA BUILDING MATERIALS ACAD
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