CN102503115B - Method for producing low-hydroxy quartz glass fibers - Google Patents
Method for producing low-hydroxy quartz glass fibers Download PDFInfo
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- CN102503115B CN102503115B CN2011103499465A CN201110349946A CN102503115B CN 102503115 B CN102503115 B CN 102503115B CN 2011103499465 A CN2011103499465 A CN 2011103499465A CN 201110349946 A CN201110349946 A CN 201110349946A CN 102503115 B CN102503115 B CN 102503115B
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Abstract
The invention relates to a method for producing quartz glass fibers, in particular to a method for producing low-hydroxyl quartz glass fibers. According to the method, quartz sand is manufactured to form a coarse quartz glass rod by a continuous melting method, the coarse quartz glass rod is subjected to dehydroxylation and is melted and stretched to form a fine quartz glass rod by an electric melting method, and the fine quartz glass rod is stretched to form the quartz glass fibers by an oxy-hydrogen combustion method. According to the coarse quartz glass rod, structural vacancy caused in the process of removing metastable hydroxyl in the quartz glass rod can be repaired naturally in the process of melting and stretching the coarse quartz glass rod to form the fine quartz glass rod. By the method, the problem of high hydroxyl content of the produced fibers due to high hydroxyl content of the quartz glass rod produced by the conventional continuous melting method is avoided. According to the quartz glass fibers produced by the method, the hydroxyl content can be controlled to be about 5 ppm, so the method has the characteristics of simple production process and low requirements on the control of equipment and a production process, and is particularly suitable for producing the low-hydroxyl quartz glass fibers.
Description
Technical field
The present invention relates to a kind of production method of quartz glass fibre, be specifically related to a kind of manufacture method of low-hydroxy quartz glass fibers.
Background technology
Usually produce at present the quartz glass bar that quartz glass fibre is used, be generally to adopt the continuous smelting method directly quartz sand to be melting into the quartz glass bar of diameter 1.5 ~ 3.5mm, and then rod is drawn into quartz glass fibre.The quartz glass bar hydroxy radical content that adopts the method to produce is high, about 130ppm, and therefore, the cellulosic hydroxy content of its production is also high.The product of high hydroxyl content has affected the ablation resistance of its product, and this makes quartz glass fibre be restricted in the use of high Mach aerospacecraft.Abroad, have and adopt sol-gel method to produce low hydroxyl silica fiber, its production method is first the organism of silicon to be made silicon sol, and then silicon sol is adjusted to the silicon gel, reel off raw silk from cocoons into fiber again in gel, finally again under vacuum high-temperature Dehydration cause quartz glass fibre.The quartz glass fibre that adopts the method to produce, hydroxy radical content can be controlled in 5ppm.But its production process is too complicated, to the control of equipment and production technique, requires degree far away higher than adopting quartz glass rod fiber elongation method.
Summary of the invention
The object of the invention is to: provide a kind of production cost low, the manufacture method of the quartz glass fibre of the simply low hydroxy radical content of technique.
The present invention realizes above-mentioned purpose by the following technical solutions:
A kind of production method of low-hydroxy quartz glass fibers is characterized in that: it comprises the following steps:
1), at first adopt the continuous smelting method that quartz sand is melting into by continuous induction melting furnace the quartz glass bar that diameter is 15-40mm;
2), the quartz glass bar of diameter 15-40mm is sent into vacuum deshydroxy stove, the vacuum degree control of vacuum deshydroxy stove in 10Pa, then is warming up to 1000-1100 ℃, keeps constant temperature 0.5-2 hours, to remove metastable hydroxyl in quartz glass bar, its hydroxy radical content is reached in 5ppm;
3), the quartz glass bar after deshydroxy is adopted the electric smelting method, the high temperature of 1800 ℃-1900 ℃ that produces by intermediate frequency furnace or resistance furnace, with the molten fine quartz glass stick that pulls into diameter 1.5-3.5mm of the speed of 0.2 ~ 0.4m/s,
4), the high temperature of 1800 ℃-2000 ℃ that adopts the oxyhydrogen combustion method to produce by oxy-hydrogen burner the fine quartz glass stick of diameter 1.5-3.5mm, can be drawn into the draw rate of 20-50 m/s the quartz glass fibre that hangs down hydroxyl.
The invention has the advantages that:
Adopt the present invention, can go out to hang down with comparatively simple explained hereafter the quartz glass fibre of hydroxyl, and quartz glass bar causes in metastable hydroxyl process in removing quartz glass bar structure vacancy, can obtain the nature reparation in melting the fine quartz glass stick process that pulls into diameter 1.5-3.5mm.The quartz glass bar hydroxy radical content of having avoided existing continuous smelting method to produce is high, and then causes also high problem of the cellulosic hydroxy of producing content.The quartz glass fibre that adopts the present invention to produce, hydroxy radical content can be controlled at the 5ppm left and right.And it is simple to have production process, to the control of equipment and production technique require the lower characteristics of degree, be specially adapted to the production of low-hydroxy quartz glass fibers.
Embodiment:
That the invention will be further described is as follows below in conjunction with specific embodiment.
Embodiment 1:
(1) adopt the continuous smelting farad to make the quartz glass bar of diameter 20mm by continuous induction melting furnace quartz sand.
(2) be that the quartz glass bar of 20mm is sent into vacuum deshydroxy stove with diameter, the vacuum degree control of vacuum deshydroxy stove, at 5Pa, is warming up to 1050 ℃ with vacuum deshydroxy stove, and keeps constant temperature 1 hour, to remove metastable hydroxyl in quartz pushrod.
(3) quartz glass bar after deshydroxy is adopted the electric smelting method, by the high temperature of 1800 ℃ of intermediate frequency furnace or resistance furnace generation, with the molten fine quartz glass stick that pulls into diameter 1.9mm of the speed of 0.3m/s.
(4) 2000 ℃ of high temperature that the fine quartz glass stick of diameter 1.9mm adopted the oxyhydrogen combustion method produce by hydrogen, oxygen combustion, be drawn into quartz glass fibre with the draw rate of 25 m/s.
Embodiment 2:
(1) adopt the continuous smelting farad to make diameter 30mm quartz glass bar by continuous induction melting furnace quartz sand.
(2) be that the quartz glass bar of 30mm is sent into vacuum deshydroxy stove with diameter, the vacuum degree control of vacuum deshydroxy stove, at 0.5Pa, is warming up to 1080 ℃ with vacuum deshydroxy stove, keeps constant temperature 1.5 hours, to remove metastable hydroxyl in quartz pushrod.
(3) quartz glass bar after deshydroxy is adopted the electric smelting method, by the high temperature of 1800 ℃ of intermediate frequency furnace or resistance furnace generation, with the molten fine quartz glass stick that pulls into diameter 2.0mm of the speed of 0.3m/s.
(4) 2000 ℃ of high temperature that the fine quartz glass stick of diameter 2.0mm adopted the oxyhydrogen combustion method produce by hydrogen, oxygen combustion, be drawn into quartz glass fibre with the draw rate of 30 m/s.
Claims (1)
1. the production method of a low-hydroxy quartz glass fibers, it is characterized in that: it comprises the following steps:
1), at first adopt the continuous smelting method that quartz sand is melting into by continuous induction melting furnace the quartz glass bar that diameter is 15-40mm;
2), the quartz glass bar of diameter 15-40mm is sent into vacuum deshydroxy stove, the vacuum degree control of vacuum deshydroxy stove in 10Pa, then is warming up to 1000-1100 ℃, keeps constant temperature 0.5-2 hours, to remove metastable hydroxyl in quartz glass bar, its hydroxy radical content is reached in 5ppm;
3), the quartz glass bar after deshydroxy is adopted the electric smelting method, the high temperature of 1800 ℃-1900 ℃ that produces by intermediate frequency furnace or resistance furnace, with the molten fine quartz glass stick that pulls into diameter 1.5-3.5mm of the speed of 0.2 ~ 0.4m/s,
4), the high temperature of 1800 ℃-2000 ℃ that adopts the oxyhydrogen combustion method to produce by oxy-hydrogen burner the fine quartz glass stick of diameter 1.5-3.5mm, can be drawn into the draw rate of 20-50 m/s the quartz glass fibre that hangs down hydroxyl.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103499465A CN102503115B (en) | 2011-11-08 | 2011-11-08 | Method for producing low-hydroxy quartz glass fibers |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103499465A CN102503115B (en) | 2011-11-08 | 2011-11-08 | Method for producing low-hydroxy quartz glass fibers |
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| CN102503115A CN102503115A (en) | 2012-06-20 |
| CN102503115B true CN102503115B (en) | 2013-11-13 |
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| CN2011103499465A Active CN102503115B (en) | 2011-11-08 | 2011-11-08 | Method for producing low-hydroxy quartz glass fibers |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102745883B (en) * | 2012-07-31 | 2015-09-23 | 北京金格兰石英玻璃有限公司 | The intermediate frequency furnace that initiatively pressurizes melts the device and method drawing silica glass bar |
| CN105130183B (en) * | 2015-08-17 | 2017-07-11 | 武汉鑫友泰光电科技有限公司 | A kind of high temperature resistant superthin quartz cellucotton and preparation method thereof |
| CN111393022B (en) * | 2020-03-23 | 2022-11-01 | 黄冈师范学院 | Preparation method of high-purity low-hydroxyl quartz glass raw material |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1673135A (en) * | 2005-03-23 | 2005-09-28 | 荆州市菲利华石英玻璃有限公司 | Rod setting mechanism for founding quartz fiber |
| CN1890189A (en) * | 2003-12-09 | 2007-01-03 | 信越化学工业株式会社 | Method of stretching optical fiber base material and stretching device |
| CN101050054A (en) * | 2007-03-28 | 2007-10-10 | 徐胜利 | Vacuum deshydroxy method for quartz glass cell |
| CN101234845A (en) * | 2008-02-27 | 2008-08-06 | 徐胜利 | Method capable of drawing quartz glass pipe and quartz glass stick |
| CN101328014A (en) * | 2008-07-28 | 2008-12-24 | 湖北菲利华石英玻璃股份有限公司 | Manufacturing method of doping quartz glass fibre |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4804796B2 (en) * | 2005-05-25 | 2011-11-02 | 株式会社フジクラ | Manufacturing method of optical fiber preform |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1890189A (en) * | 2003-12-09 | 2007-01-03 | 信越化学工业株式会社 | Method of stretching optical fiber base material and stretching device |
| CN1673135A (en) * | 2005-03-23 | 2005-09-28 | 荆州市菲利华石英玻璃有限公司 | Rod setting mechanism for founding quartz fiber |
| CN101050054A (en) * | 2007-03-28 | 2007-10-10 | 徐胜利 | Vacuum deshydroxy method for quartz glass cell |
| CN101234845A (en) * | 2008-02-27 | 2008-08-06 | 徐胜利 | Method capable of drawing quartz glass pipe and quartz glass stick |
| CN101328014A (en) * | 2008-07-28 | 2008-12-24 | 湖北菲利华石英玻璃股份有限公司 | Manufacturing method of doping quartz glass fibre |
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Denomination of invention: A production method of low hydroxyl quartz glass fiber Effective date of registration: 20230925 Granted publication date: 20131113 Pledgee: China Everbright Bank Co.,Ltd. Jingzhou Branch Pledgor: HUBEI FEILIHUA QUARTZ GLASS Co.,Ltd. Registration number: Y2023980058350 |
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