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Preparing method for fluorine-high-doped silica glass

A quartz glass, high-doped technology, applied in glass manufacturing equipment, glass molding, manufacturing tools, etc., can solve the problem of low fluorine doping, and achieve the effect of increasing the content of fluorine, excellent refractive index, and expanding the field of use

Inactive Publication Date: 2016-02-17
TAICANG JIANXING QUARTZ GLASS FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention is to provide a preparation method of high fluorine-doped quartz glass, which can solve the disadvantage of low fluorine doping in the existing preparation process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method for preparing highly fluorine-doped quartz glass, comprising the steps of:

[0024] (1) Preparation of sol: take tetraethyl orthosilicate, ethanol, dilute hydrochloric acid with a molar mass of 0.03mol / L and fluorine doping agent Si(OC 2 h 5 ) 3 F in a reactor with heating and stirring function, stir at a rate of 50r / min to fully dissolve it and form a sol;

[0025] (2) Preparation of gel: add desiccant formamide accounting for 1 / 2 of the volume of tetraethyl orthosilicate to the sol prepared in step (1), stir and mix well, and then centrifugally dehydrate to form a gel;

[0026] (3) Drying treatment: drying the gel prepared in step (2) at 60-70°C until the water content is reduced to below 5% to become xerogel;

[0027] (4) Grinding: Grinding the xerogel obtained in step (3) in a planetary high-energy grinder until the particle diameter is 50-80 μm;

[0028] (5) Low temperature treatment: the dry gel ground in step (4) is left to stand at 5-10°C for 1-3 da...

Embodiment 2

[0031] A method for preparing highly fluorine-doped quartz glass, comprising the steps of:

[0032] (1) Preparation of sol: Take tetraethyl orthosilicate, ethanol, dilute hydrochloric acid with a molar mass of 0.03mol / L and fluorine doping agent NH with a volume ratio of 5:6:1:10 4 F in a reactor with heating and stirring function, stir at a rate of 50r / min to fully dissolve it and form a sol;

[0033] (2) Preparation of gel: add desiccant formamide accounting for 1 / 2 of the volume of tetraethyl orthosilicate to the sol prepared in step (1), stir and mix well, and then centrifugally dehydrate to form a gel;

[0034] (3) Drying treatment: drying the gel prepared in step (2) at 60-70°C until the water content is reduced to below 5% to become xerogel;

[0035] (4) Grinding: Grinding the xerogel obtained in step (3) in a planetary high-energy grinder until the particle diameter is 50-80 μm;

[0036] (5) Low temperature treatment: the dry gel ground in step (4) is left to stand a...

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Abstract

The invention discloses a preparing method for fluorine-high-doped silica glass. The preparing method includes the following steps of 1, sol preparing; 2, gel preparing; 3, drying, 4, grinding; 5, low-temperature treatment; 6, sintering molding. According to the prepared fluorine-containing silica glass, the refractive index is 0.45% to 0.56%, and the fluorine content is 5.8% to 9.0%. According to the preparing method for the fluorine-high-doped silica glass, due to the reasonable technological design, the content of fluorine in the silica glass is effectively increased, the prepared silica glass has the excellent refractive index accordingly, and the application field is expanded.

Description

technical field [0001] The invention relates to the technical field of quartz glass preparation, in particular to a preparation method of highly fluorine-doped quartz glass. Background technique [0002] Quartz glass has high mechanical strength, excellent chemical stability, and excellent optical properties, so it occupies an important position in industries such as electric light sources, optical fibers, electronic information, semiconductors, and aerospace. Fluorine-doped silica glass has broad application prospects in optical communication and ultraviolet laser transmission optical fiber because it can significantly reduce the refractive index of glass without increasing loss. Fluorine-doped quartz glass has excellent light-guiding properties because it reduces the refractive index without causing an increase in loss. [0003] Most of the existing fluorine-doped quartz glass is prepared by the sol-gel method, but the fluorine content of the prepared fluorine-doped quart...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B19/12C03B19/06C03C3/06
CPCC03B19/12C03B19/06C03B2201/07C03B2201/12
Inventor 沈建兴
Owner TAICANG JIANXING QUARTZ GLASS FACTORY