JP6013499B2 - 合成石英ガラスを製造する方法及び光ファイバーを製造する方法 - Google Patents
合成石英ガラスを製造する方法及び光ファイバーを製造する方法 Download PDFInfo
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims description 61
- 238000004519 manufacturing process Methods 0.000 title claims description 20
- 239000013307 optical fiber Substances 0.000 title claims description 6
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 196
- 239000002994 raw material Substances 0.000 claims description 141
- 239000004071 soot Substances 0.000 claims description 111
- 239000007788 liquid Substances 0.000 claims description 109
- 238000000034 method Methods 0.000 claims description 82
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- 239000002245 particle Substances 0.000 claims description 65
- 238000000151 deposition Methods 0.000 claims description 54
- 230000008016 vaporization Effects 0.000 claims description 54
- 238000009834 vaporization Methods 0.000 claims description 50
- 230000008021 deposition Effects 0.000 claims description 45
- 239000012159 carrier gas Substances 0.000 claims description 18
- 239000003085 diluting agent Substances 0.000 claims description 17
- 238000002156 mixing Methods 0.000 claims description 17
- HMMGMWAXVFQUOA-UHFFFAOYSA-N octamethylcyclotetrasiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 HMMGMWAXVFQUOA-UHFFFAOYSA-N 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 8
- IUMSDRXLFWAGNT-UHFFFAOYSA-N Dodecamethylcyclohexasiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 IUMSDRXLFWAGNT-UHFFFAOYSA-N 0.000 claims description 4
- HTDJPCNNEPUOOQ-UHFFFAOYSA-N hexamethylcyclotrisiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O1 HTDJPCNNEPUOOQ-UHFFFAOYSA-N 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- GSANOGQCVHBHIF-UHFFFAOYSA-N tetradecamethylcycloheptasiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 GSANOGQCVHBHIF-UHFFFAOYSA-N 0.000 claims description 3
- XKJMJYZFAWYREL-UHFFFAOYSA-N hexadecamethylcyclooctasiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 XKJMJYZFAWYREL-UHFFFAOYSA-N 0.000 claims description 2
- 230000002441 reversible effect Effects 0.000 claims 1
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 7
- 238000000354 decomposition reaction Methods 0.000 description 7
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- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000000460 chlorine Substances 0.000 description 5
- 229910052801 chlorine Inorganic materials 0.000 description 5
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- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 229910003902 SiCl 4 Inorganic materials 0.000 description 4
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- XMSXQFUHVRWGNA-UHFFFAOYSA-N Decamethylcyclopentasiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 XMSXQFUHVRWGNA-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
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- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
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- 238000012360 testing method Methods 0.000 description 2
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- VXEGSRKPIUDPQT-UHFFFAOYSA-N 4-[4-(4-methoxyphenyl)piperazin-1-yl]aniline Chemical compound C1=CC(OC)=CC=C1N1CCN(C=2C=CC(N)=CC=2)CC1 VXEGSRKPIUDPQT-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000012369 In process control Methods 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical class [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 125000005376 alkyl siloxane group Chemical group 0.000 description 1
- 229910021486 amorphous silicon dioxide Inorganic materials 0.000 description 1
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- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
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- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 1
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- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B19/00—Other methods of shaping glass
- C03B19/14—Other methods of shaping glass by gas- or vapour- phase reaction processes
-
- 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
- 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]
- C03B37/018—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] by glass deposition on a glass substrate, e.g. by inside-, modified-, plasma-, or plasma modified- chemical vapour deposition [ICVD, MCVD, PCVD, PMCVD], i.e. by thin layer coating on the inside or outside of a glass tube or on a glass rod
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B19/00—Other methods of shaping glass
- C03B19/14—Other methods of shaping glass by gas- or vapour- phase reaction processes
- C03B19/1415—Reactant delivery systems
-
- 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]
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2207/00—Glass deposition burners
- C03B2207/30—For glass precursor of non-standard type, e.g. solid SiH3F
- C03B2207/32—Non-halide
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Glass Melting And Manufacturing (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
Description
(a)主要な成分としてオクタメチルシクロテトラシロキサンD4を含有する、液体SiO2原料を供給する工程と、
(b)SiO2原料を原料蒸気に気化させる工程と、
(c)原料蒸気をSiO2粒子に変化させる工程と、
(d)多孔質SiO2スート体を形成しながら、堆積表面にSiO2粒子を堆積させる工程と、
(e)合成石英ガラスを形成しながら、SiO2スート体をガラス化する工程と
を含む合成石英ガラスを製造する方法に関する。
(a)反応帯に到達する原料は、D4の参照分子量の両側で分子量を有する付加的成分、理想的にはD3及びD6及びD7又はそれらの開鎖同族体を含有しなくてはならない。
付加的成分D3及びD6は、D4に対して類似の分子量及び化学的類似性を備えた分子であり、反応帯及び粒子形成プロセスにおいて、粒径分布の軽い平坦化を伴う、緩やかな変化をもたらす。
(b)可能な限り均一なD4の両側における付加的成分の分布。この条件は、mD3/mD6の比が0.5〜500の範囲内であれば、十分に満たされる。
前述の範囲外のD3及びD6の重量分率で、偶然に混合されたポリアルキルシロキサン混合物は、スート体の均質性に関して乏しい結果を生む。
(c)D6より高温でも沸騰するポリアルキルシロキサンの最低限度の量であり、理想的には重量分率mD7+が合計で少なくとも20重量ppmである、D7又はより長鎖のポリアルキルシロキサンD8(以下で用語mD7はD7の重量分率を示すために、また、以下において用語mD7+はD7及びD8の重量分率の合計を示すために使用される。)。
大気圧下でのD7の沸点は約276℃であり、従って、D4の沸点(約175℃)より明らかに高い。それぞれの沸騰温度の大きな差のため、付加的成分D7は少量で既に粒子形成プロセスに多大な影響を与える。しかしながら、20ppm未満の重量分率mD7+では、大きな作用は検出することができない。重量分率mD7+に関して、D7の量は、相当するD8の量によって置き換えることができる。しかしながら、D4と比較して大きい分子量のために、D8及びその直鎖同族体は、低濃度で既に反応帯及び粒子形成プロセスに顕著な変化をもたらす。そのため、D8の重量分率は、原料において20重量ppmより大きくないことが好ましい。
・SiO2原料を加熱する工程と、
・加熱されたSiO2原料を膨張室に導入し、その結果、該SiO2原料の少なくとも第1の部分が圧低下により気化される工程と、
・SiO2原料を加熱された希釈剤で混合し、その結果、該SiO2原料の少なくとも第2の部分が露点の低下により気化される工程と
を含む気化方法を用いることが好ましい。
τ=(G_liquid−G_vapor)/G_liquid
は、±500ppm以下、好ましくは±100ppm以下であるべきである。式中G_liquidは液体SiO2原料における重量比mD3/mD6であり、G_vaporは気体SiO2原料における重量比mD3/mD6である。
D3、D4、D5、D6及びそれらの直鎖同族体が少なくとも99.99重量%を占める、ポリアルキルシロキサンの第1混合物を供給する工程と、
mD7+が少なくとも40重量%、好ましくは少なくとも80重量%、特に好ましくは少なくとも90重量%の量を占める、ポリアルキルシロキサンの第2混合物を供給する工程と、
工程(b)による気化の前又はその間に、重量分率mD7+が全混合物において少なくとも20重量ppmとなる混合比で、ポリアルキルシロキサンの第1及び第2混合物から混合体を生成する工程と
を含む。
「++」 非常に良い
「+」 良い
「0」 許容可能
「−」 悪い
「−−」 非常に悪い
σStdT=0.4%
δStdT=0.025%
σInv=0.37%
δInv=0.023%
105 SiO2原料
107 SiO2原料蒸気
110 貯留タンク/貯留容器
115 予備加熱装置
116 入口
117 出口
120 気化器/気化器システム
122 液体ポンプ
123 フローメーター
124 MFC(mass flow controller、マスフローコントローラー)
125 膨張室/気化室
126 ライン
128 噴霧ノズル
130 ライン
140 バーナー/火炎加水分解バーナー
141 バーナーブロック
142 140の動き
143 バーナー炎
145 供給ライン
148 SiO2スート
150 媒体ライン
151 貯留容器
152 希釈剤
160 堆積表面/キャリアチューブ
161 160の縦軸
200 スート体
Claims (13)
- (a)主要な成分としてオクタメチルシクロテトラシロキサンD4を含有する、液体SiO2原料(105)を供給する工程と、
(b)前記SiO2原料(105)を原料蒸気(107)に気化させる工程と、
(c)前記原料蒸気をSiO2粒子(148)に変化させる工程と、
(d)多孔質SiO2スート体(200)を形成しながら、堆積表面(160)に前記SiO2粒子(148)を堆積させる工程と、
(e)合成石英ガラスを形成しながら、前記SiO2スート体(200)をガラス化する工程と
を含む合成石英ガラスを製造する方法であって、
前記液体原料(105)は、重量分率がmD3である、ヘキサメチルシクロトリシロキサンD3及びその直鎖同族体と、重量分率がmD6である、ドデカメチルシクロヘキサシロキサンD6及びその直鎖同族体と、重量分率がmD7+である、テトラデカメチルシクロヘプタシロキサンD7及び/又はヘキサデカメチルシクロオクタシロキサンD8及びそれらの直鎖同族体とを含む付加的成分を含有し、mD3が200重量ppm以上であり、mD6が50重量ppm以上であり、mD3/mD6の重量比が0.5〜500の範囲内であり、前記重量分率mD7+が少なくとも20重量ppmであることを特徴とする方法。 - 前記mD3/mD6の比が、1〜200の範囲内であることを特徴とする請求項1に記載の方法。
- 前記重量分率mD7+が、30〜100重量ppmの範囲内であることを特徴とする請求項1又は請求項2に記載の方法。
- 前記重量分率mD3とmD6の合計が、500〜15000重量ppmの範囲内であることを特徴とする請求項1から請求項3のいずれか1項に記載の方法。
- mD3が15000重量ppm以下であり、mD6が2000重量ppm以下であることを特徴とする請求項1から請求項4のいずれか1項に記載の方法。
- 重量比mD3/(mD6 + mD7+)が、0.3〜150の範囲内であることを特徴とする請求項1から請求項5のいずれか1項に記載の方法。
- 前記気化は、
前記液体SiO2原料(105)を加熱する工程と、
前記加熱されたSiO2原料(105)を膨張室(125)に導入し、その結果、該SiO2原料(105)の少なくとも第1の部分が圧低下により気化される工程と、
前記SiO2原料(105)を加熱された希釈剤(152)で混合し、その結果、該SiO2原料(105)の少なくとも第2の部分が露点の低下により気化される工程と
を含むことを特徴とする請求項1から請求項6のいずれか1項に記載の方法。 - 前記加熱されたSiO2原料(105)を前記膨張室(125)に導入する工程は、前記SiO2原料(105)が液体状で微細液滴に粒子化される注入段階を含み、該液滴の平均直径は5μm未満であることを特徴とする請求項7に記載の方法。
- 前記微細液滴の前記高温キャリアガス(152)への接触は、150℃〜230℃の範囲の温度で保たれた膨張室(125)で行われることを特徴とする請求項7又は請求項8に記載の方法。
- 前記SiO2原料(105)を前記膨張室(125)に導入する間、濃度検出器によって前記SiO2原料の組成を測定することを特徴とする請求項7から請求項9のいずれか1項に記載の方法。
- 工程(a)による液体SiO2原料(105)の供給は、
D3、D4、D5、D6及びそれらの直鎖同族体が少なくとも99.99重量%を占める、ポリアルキルシロキサンの第1混合物を供給する工程と、
D7が少なくとも40重量%の量を占めるポリアルキルシロキサンの第2混合物を供給する工程と、
工程(b)による気化の前又はその間に、重量分率mD7+が全混合物において少なくとも20重量ppmとなる混合比で、ポリアルキルシロキサンの前記第1及び第2混合物から混合体を生成する工程と
を含むことを特徴とする請求項1から請求項10のいずれか1項に記載の方法。 - 前記原料蒸気(107)をバーナー列(141)に配置された複数の堆積用バーナー(140)に供給し、該堆積用バーナーを前記堆積表面(160)に沿って連結的かつ可逆的に動かすことにより、工程(d)に従って前記SiO2粒子を前記堆積表面(160)に堆積させることを特徴とする請求項1から請求項11のいずれか1項に記載の方法。
- 請求項1から請求項12の少なくとも1項の方法により合成石英ガラスを製造し、該製造された合成石英ガラスを用いて光ファイバーを製造することを特徴とする光ファイバーを製造する方法。
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US201161569083P | 2011-12-09 | 2011-12-09 | |
US61/569,083 | 2011-12-09 | ||
PCT/EP2012/073338 WO2013076191A1 (de) | 2011-11-25 | 2012-11-22 | Verfahren zur herstellung von synthetischem quarzglas durch abscheidung von silicasoot aus der dampfphase auf einer unterlage |
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US20130133375A1 (en) | 2013-05-30 |
EP2782875A1 (de) | 2014-10-01 |
KR20140098812A (ko) | 2014-08-08 |
DE102011119374A1 (de) | 2013-05-29 |
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