WO2012039227A1 - ガラス母材の製造方法 - Google Patents
ガラス母材の製造方法 Download PDFInfo
- Publication number
- WO2012039227A1 WO2012039227A1 PCT/JP2011/069026 JP2011069026W WO2012039227A1 WO 2012039227 A1 WO2012039227 A1 WO 2012039227A1 JP 2011069026 W JP2011069026 W JP 2011069026W WO 2012039227 A1 WO2012039227 A1 WO 2012039227A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- glass
- glass fine
- producing
- fine particles
- base material
- Prior art date
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
- C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
- C03B37/01413—Reactant delivery systems
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/12—General methods of coating; Devices therefor
- C03C25/22—Deposition from the vapour phase
- C03C25/223—Deposition from the vapour phase by chemical vapour deposition or pyrolysis
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/42—Coatings containing inorganic materials
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2207/00—Glass deposition burners
- C03B2207/80—Feeding the burner or the burner-heated deposition site
- C03B2207/85—Feeding the burner or the burner-heated deposition site with vapour generated from liquid glass precursors, e.g. directly by heating the liquid
- C03B2207/87—Controlling the temperature
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Definitions
- the present invention relates to a method for producing a glass base material for producing a glass fine particle deposit by a Vapor phase axial deposition method (VAD method), an outside vapor deposition method (OVD method), a Multi burner multi layer deposition method (MMD method), or the like.
- VAD method Vapor phase axial deposition method
- OLED method outside vapor deposition method
- MMD method Multi burner multi layer deposition method
- Patent Document 1 discloses a method in which a porous soot body obtained by a gas phase synthesis method is impregnated in a mixed liquid in which additive fine particles are dispersed and heated to be transparent to obtain a glass base material. It is described. [0013] In the paragraph, there is a description that the particle diameter of the SiO 2 -based porous body is 500 to 1000 nm.
- Patent Document 2 Japanese Patent Application Laid-Open No. 2004-300006 (Patent Document 2) describes a manufacturing method in which glass fine particles prepared in advance are introduced into a burner flame. This is a production method different from the present invention in which a gaseous raw material is supplied to produce glass fine particles, but the average particle diameter of the glass fine particles to be introduced is 0.2 ⁇ m or less, so that clogging due to aggregation of glass fine particles generated in the raw material supply pipe Is described, and a method for efficiently supplying glass fine particles to a burner is described.
- An object of the present invention is to provide a method for producing a glass base material capable of improving the adhesion efficiency of glass fine particles to a starting rod or a glass fine particle deposit.
- the temperature of the raw material gas is controlled to 100 ° C. or higher
- the raw material gas controlled to 100 ° C. or higher is introduced into the glass fine particle generating burner arranged in the reaction vessel
- glass fine particles having an average outer diameter of 90 nm or more are generated by a flame hydrolysis reaction.
- the generated glass fine particles are applied to a starting rod arranged in the reaction vessel.
- a glass base material manufacturing method in which a glass fine particle deposit is produced by deposition and (5) the obtained glass fine particle deposit is heated at a high temperature to obtain a transparent glass base material.
- the average outer diameter of the glass fine particles is preferably 110 nm or more.
- Examples of the method for producing the glass fine particle deposit include a VAD method, an OVD method, and an MMD method.
- the method for producing a glass base material according to the present invention it is possible to improve the adhesion efficiency of the glass fine particles to the starting rod and the glass fine particle deposit.
- FIG. 1 is a conceptual diagram of a manufacturing apparatus 10 used in an embodiment of a method for manufacturing a glass base material according to the present invention.
- the manufacturing apparatus 10 deposits glass fine particles by the VAD method.
- a support rod 12 is suspended from above the reaction vessel 11 and a starting glass rod 13 is attached to the lower side of the support rod 12. Glass particulates are deposited on the starting glass rod 13 to form a glass particulate deposit 14.
- the upper end of the support bar 12 is held by the lifting device 15 and is lifted and lowered by the lifting device 15 together with the rotation.
- the elevating device 15 controls the ascending speed by the control device 16 so that the outer diameter of the glass particulate deposit 14 is uniform.
- a clad burner 18 is provided below the reaction vessel 11, and a raw material gas is supplied to the clad burner 18 by a raw material gas supply device 19.
- the raw material gas supply device 19 includes a raw material tank 22, an MFC 23, a temperature control booth 24, and a raw material gas supply pipe 25.
- the temperature control booth 24 controls the liquid raw material 29 in the raw material tank 22 to a temperature equal to or higher than the boiling point. Vaporization is performed, and the amount of source gas supplied to the cladding burner 18 by the MFC 23 is controlled.
- the temperature of the source gas supply pipe 25 to the cladding burner 18 is also controlled by a heating element 28 or the like. In FIG. 1, the flame forming gas supply device is omitted.
- the cladding burner 18 is charged with SiCl 4 as source gas, H 2 and O 2 as flame forming gas, and N 2 as burner seal gas.
- An exhaust pipe 21 is attached to the side surface of the reaction vessel 11.
- the support rod 12 is attached to the lifting device 15, and the starting glass rod 13 attached to the tip of the support rod 12 is placed in the reaction vessel 11. While the starting glass rod 13 is rotated by the elevating device 15, glass fine particles are deposited on the starting glass rod 13 by the cladding burner 18.
- the glass fine particle deposit 14 in which glass fine particles are deposited on the starting glass rod 13 is pulled up by the lifting device 15 in accordance with the growth rate of the lower end portion of the glass fine particle deposit 14.
- the obtained glass fine particle deposit 14 is heated to 1100 degrees in a mixed atmosphere of an inert gas and chlorine, and then heated to 1550 ° C. in a He atmosphere to perform transparent vitrification.
- the temperature of SiCl 4 that is a raw material gas to be introduced into the burner for generating glass fine particles is controlled to 100 ° C. or higher, and the average outside of the glass fine particles adhering to the glass fine particle deposit 14 is controlled.
- the diameter is 90 nm or more.
- the gas temperature of SiCl 4 is set to 100 ° C. or higher, the chemical reaction proceeds faster, so that the amount of glass fine particles generated increases and the glass fine particle diameter increases.
- the larger the particle size the more the aggregation by turbulent diffusion (the combination of a plurality of glass fine particles combined into a particle group) is promoted, and the inertial mass of the particle group increases.
- the aggregation rate due to turbulent diffusion increases in proportion to the third power of the particle outer diameter.
- FIG. 2 is a conceptual diagram illustrating the behavior when glass particles are deposited.
- the flame gas flow 20 containing the source gas such as SiCl 4 formed by the cladding burner 18 hits the glass fine particle deposit 14 and its direction is suddenly bent outwardly of the glass fine particle deposit 14. .
- F 1 and F 2 are vector quantities.
- the small particles 27 are likely to flow along the flow of the flame gas flow 20, whereas the large particles 26 are difficult to flow along the flow of the flame gas flow 20, and go straight to the glass particulate deposit 14. To be attached.
- the glass fine particles are large, the aggregation of the particles and the effect of increasing the inertial mass of the particle groups are combined, and the glass fine particles and the particle groups are easily separated from the gas flow in the flame. And adhesion of the glass fine particle to the starting glass rod 13 and the glass fine particle deposit 14 which are the targets is promoted, and the adhesion efficiency can be improved.
- the manufacturing method of the glass base material comprised in this way aggregation by the production
- glass fine particles are deposited by the VAD method on a starting glass rod which is a quartz glass having a diameter of 25 mm and a length of 1000 mm to produce a glass base material.
- the gases introduced into the cladding burner are raw material gas (1-7 SLM SiCl 4 ), flame forming gas (100-150 SLM H 2 , 150-200 SLM O 2 ), burner seal gas (20-30 SLM N 2). ).
- the obtained glass fine particle deposit is heated to 1100 ° C. in a mixed atmosphere of an inert gas and chlorine, and then heated to 1550 ° C. in a He atmosphere to perform transparent vitrification.
- the average outer diameter D (nm) of the glass fine particles is varied by changing the temperature T of the raw material gas introduced into the burner, and the adhesion efficiency A (%) of the glass fine particles is evaluated.
- the average outer diameter D of the glass fine particles is measured by a BET surface area measurement method.
- the adhesion efficiency A of the glass fine particles is a ratio of the mass of the actually deposited glass fine particles to the mass when the SiCl 4 gas becomes 100% SiO 2 . As a result, the results shown in the table are obtained.
- Comparative Examples 1 to 3 the raw material gas temperature is lower than 100 ° C., and as the average outer diameter D of the glass fine particles becomes smaller than 90 nm, the adhesion efficiency A of the glass fine particles decreases. In Comparative Example 3, only 29.9%. It can be confirmed that it does not adhere.
- the manufacturing method of the optical fiber preform of the present invention is not limited to the above-described embodiment (VAD method), and can be appropriately modified and improved. The same applies to the OVD method and the MMD method. effective. Further, in the embodiment, but uses a raw material gas only SiCl 4, a mixed gas of SiCl 4 and GeCl 4 has the same effect even when a raw material gas.
- the material, shape, dimension, numerical value, form, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as they are within the scope of the present invention.
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
- Glass Melting And Manufacturing (AREA)
Abstract
Description
実施例、比較例とも、直径25mm、長さ1000mmの石英ガラスである出発ガラスロッド上に、VAD法によりガラス微粒子の堆積を行い、ガラス母材を製造する。クラッド用バーナへ投入するガスは、原料ガス(1~7SLMのSiCl4)、火炎形成ガス(100~150SLMのH2と、150~200SLMのO2)、バーナシールガス(20~30SLMのN2)である。得られたガラス微粒子堆積体を不活性ガスと塩素との混合雰囲気中で1100度に加熱した後、He雰囲気中で1550℃に加熱して透明ガラス化を行う。
表
Claims (3)
- 原料ガスの温度を100℃以上に制御し、
反応容器内に配置されたガラス微粒子生成用バーナに前記100℃以上に制御された原料ガスを投入し、
該ガラス微粒子生成用バーナの火炎内で、火炎加水分解反応により平均外径が90nm以上であるガラス微粒子を生成し、
生成した該ガラス微粒子を前記反応容器内に配置された出発ロッドに堆積させてガラス微粒子堆積体を作製し、
得られた該ガラス微粒子堆積体を高温加熱して透明ガラス母材を得る
ガラス母材の製造方法。 - 前記平均外径が110nm以上である請求項1に記載のガラス母材の製造方法。
- 前記ガラス微粒子堆積体の作製方法が、VAD法、OVD法、MMD法のいずれかである
請求項1又は2に記載のガラス母材の製造方法。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112011103154T DE112011103154T5 (de) | 2010-09-21 | 2011-08-24 | Verfahren zur Erzeugung eines Glasgrundmaterials |
CN201180040210.8A CN103068750B (zh) | 2010-09-21 | 2011-08-24 | 用于制造玻璃预制品的方法 |
US13/816,948 US20130139554A1 (en) | 2010-09-21 | 2011-08-24 | Method for manufacturing glass preform |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010-210762 | 2010-09-21 | ||
JP2010210762A JP5381946B2 (ja) | 2010-09-21 | 2010-09-21 | ガラス母材の製造方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012039227A1 true WO2012039227A1 (ja) | 2012-03-29 |
Family
ID=45873717
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2011/069026 WO2012039227A1 (ja) | 2010-09-21 | 2011-08-24 | ガラス母材の製造方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20130139554A1 (ja) |
JP (1) | JP5381946B2 (ja) |
CN (1) | CN103068750B (ja) |
DE (1) | DE112011103154T5 (ja) |
WO (1) | WO2012039227A1 (ja) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11255522A (ja) * | 1998-03-11 | 1999-09-21 | Nikon Corp | 合成石英ガラス製造方法 |
JP2001524064A (ja) * | 1996-12-16 | 2001-11-27 | コーニング インコーポレイテッド | ゲルマニウム添加シリカ形成供給原料および方法 |
JP2003252635A (ja) * | 2002-03-01 | 2003-09-10 | Fujikura Ltd | 多孔質母材の製造方法および製造装置 |
WO2010098352A1 (ja) * | 2009-02-24 | 2010-09-02 | 旭硝子株式会社 | 多孔質石英ガラス体の製造方法およびeuvリソグラフィ用光学部材 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11180719A (ja) | 1997-12-24 | 1999-07-06 | Sumitomo Electric Ind Ltd | 光ファイバ用ガラス母材の製造方法 |
EP0978487A3 (en) * | 1998-08-07 | 2001-02-21 | Corning Incorporated | Sealed, nozzle-mix burners for silica deposition |
US6467313B1 (en) * | 2000-06-09 | 2002-10-22 | Corning Incorporated | Method for controlling dopant profiles |
US6789401B1 (en) * | 2001-06-28 | 2004-09-14 | Asi/Silica Machinery, Llc | Particle deposition system and method |
JP2004300006A (ja) | 2003-04-01 | 2004-10-28 | Sumitomo Electric Ind Ltd | 多孔質ガラス微粒子堆積体の製造法 |
-
2010
- 2010-09-21 JP JP2010210762A patent/JP5381946B2/ja active Active
-
2011
- 2011-08-24 US US13/816,948 patent/US20130139554A1/en not_active Abandoned
- 2011-08-24 WO PCT/JP2011/069026 patent/WO2012039227A1/ja active Application Filing
- 2011-08-24 DE DE112011103154T patent/DE112011103154T5/de not_active Withdrawn
- 2011-08-24 CN CN201180040210.8A patent/CN103068750B/zh active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001524064A (ja) * | 1996-12-16 | 2001-11-27 | コーニング インコーポレイテッド | ゲルマニウム添加シリカ形成供給原料および方法 |
JPH11255522A (ja) * | 1998-03-11 | 1999-09-21 | Nikon Corp | 合成石英ガラス製造方法 |
JP2003252635A (ja) * | 2002-03-01 | 2003-09-10 | Fujikura Ltd | 多孔質母材の製造方法および製造装置 |
WO2010098352A1 (ja) * | 2009-02-24 | 2010-09-02 | 旭硝子株式会社 | 多孔質石英ガラス体の製造方法およびeuvリソグラフィ用光学部材 |
Also Published As
Publication number | Publication date |
---|---|
US20130139554A1 (en) | 2013-06-06 |
JP5381946B2 (ja) | 2014-01-08 |
CN103068750B (zh) | 2015-04-22 |
JP2012066946A (ja) | 2012-04-05 |
DE112011103154T5 (de) | 2013-07-18 |
CN103068750A (zh) | 2013-04-24 |
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