JPS6240306B2 - - Google Patents
Info
- Publication number
- JPS6240306B2 JPS6240306B2 JP55103403A JP10340380A JPS6240306B2 JP S6240306 B2 JPS6240306 B2 JP S6240306B2 JP 55103403 A JP55103403 A JP 55103403A JP 10340380 A JP10340380 A JP 10340380A JP S6240306 B2 JPS6240306 B2 JP S6240306B2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- quartz glass
- glass tube
- glass
- impurities
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- 239000011521 glass Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 239000003779 heat-resistant material Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 239000012535 impurity Substances 0.000 description 9
- 238000004458 analytical method Methods 0.000 description 5
- 239000005350 fused silica glass Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000013307 optical fiber Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/60—Construction of the column
- G01N30/6052—Construction of the column body
- G01N30/6073—Construction of the column body in open tubular form
Landscapes
- Glass Melting And Manufacturing (AREA)
- Devices For Use In Laboratory Experiments (AREA)
- Surface Treatment Of Glass (AREA)
- Surface Treatment Of Glass Fibres Or Filaments (AREA)
Description
【発明の詳細な説明】
本発明は、ガスクロマトグラフ等の高精度化学
分析用に使用されるガラス管に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a glass tube used for high-precision chemical analysis such as a gas chromatograph.
ガスクロマトグラフの最も重要な構成要素の一
つであるカラムは、ガラスや金属或いはナイロン
製の毛細管が使用される。一般に、カラムは内径
が細いほど分解能を上げることができ、又、高温
に晒された場合に不純物が析出して分析結果に悪
影響を及ぼすことがないように高温でも安定した
不純物を含まないものを使う必要がある。ところ
が、従来のカラムは極細の毛細管が得にくく、し
かも高温で不純物が析出する虞のあるものしかな
かつたため、信頼性及び性能の点で問題があつ
た。 The column, which is one of the most important components of a gas chromatograph, uses a capillary tube made of glass, metal, or nylon. In general, the smaller the inner diameter of the column, the higher the resolution, and in order to prevent impurities from precipitating when exposed to high temperatures and adversely affecting the analysis results, columns should be stable even at high temperatures and do not contain impurities. need to use it. However, conventional columns had problems in terms of reliability and performance because it was difficult to obtain extremely thin capillary tubes and there was a risk that impurities would precipitate at high temperatures.
本発明者らは、このようなカラムの製造に光フ
アイバの技術を応用し得ることに着目し、石英ガ
ラスを使用することで高温でも劣化することなく
しかも不純物が析出せず、極細の毛細管を製造可
能なことを見い出した。つまり、本発明は高温で
も安定していることはもちろん、不純物が非常に
少なくしかも極めて細く加工することが可能なガ
ラス管を提供することを目的とする。 The present inventors focused on the possibility of applying optical fiber technology to the manufacture of such columns, and found that by using quartz glass, it does not deteriorate even at high temperatures, does not precipitate impurities, and can form ultra-thin capillary tubes. We have discovered that it can be manufactured. That is, an object of the present invention is to provide a glass tube that is not only stable even at high temperatures but also contains very few impurities and can be processed into an extremely thin tube.
この目的を達成する本発明のガラス管にかかる
構成は、その断面構造を表わす第１図に示すよう
に石英ガラス管１の内周壁に内付け法で石英ガラ
ス層２を合成すると共に前記石英ガラス管１の外
周壁に耐熱性材料３の被膜を形成したことを特徴
とするものである。 The structure of the glass tube of the present invention that achieves this object is as shown in FIG. It is characterized in that a coating of heat-resistant material 3 is formed on the outer circumferential wall of the tube 1.
内付け法等の光フアイバ製造技術で得られる合
成の石英ガラスは99.9999％程度の高純度を誇る
ため、不純物が極めて少ない。ただ、製造コスト
が嵩むために分析用試料が通過する管の内周壁の
みに形成されていれば充分であり、本体として市
販の溶融石英ガラスを用いる。従つて、第２図に
示すように不純物の多い市販の溶融石英ガラス管
１１の内周壁に内付け法により高純度の合成石英
ガラス層１２を合成して透明ガラス化したのち、
これらを加熱炉１３に通して所定の径に紡糸する
が、このままでは溶融石英ガラス管１１の外周壁
に発生した微小な疵（クラツク）が原因となつて
簡単に破断してしまうので、ここに被膜を形成す
る必要がある。そこで、カラムとして使用する場
合には300℃程度まで加熱されるため、この程度
の高温でも劣化する虞のない耐熱性材料、例えば
金属被膜の蒸着やポリイミド樹脂、弗素樹脂等の
被膜を溶融石英ガラス管１１の外周壁に形成す
る。これによつて、高強度で耐高温特性に優れた
不純物の少ない化学分析用のガラス毛細管が得ら
れる。 Synthetic quartz glass obtained using optical fiber manufacturing techniques such as the internal attachment method boasts a high purity of approximately 99.9999%, so it contains extremely few impurities. However, since the manufacturing cost is high, it is sufficient to form it only on the inner circumferential wall of the tube through which the sample for analysis passes, and a commercially available fused silica glass is used as the main body. Therefore, as shown in FIG. 2, a high-purity synthetic quartz glass layer 12 is synthesized on the inner circumferential wall of a commercially available fused silica glass tube 11 containing many impurities by an internal attachment method, and the layer 12 is made into transparent glass.
These are passed through a heating furnace 13 and spun to a predetermined diameter, but if left as is, the fused silica glass tube 11 would easily break due to minute scratches on the outer peripheral wall. It is necessary to form a film. Therefore, when used as a column, the fused silica glass is heated to about 300℃, so heat-resistant materials that do not deteriorate even at this high temperature, such as vapor-deposited metal coatings, polyimide resins, fluorine resins, etc., are used to make fused silica glass. It is formed on the outer peripheral wall of the tube 11. As a result, a glass capillary tube for chemical analysis with high strength, excellent high temperature resistance, and few impurities can be obtained.
このように本発明によると、高温でも安定した
石英ガラス管の内周壁に高純度の石英ガラス層を
合成して試料通路内への不純物の析出を防止する
一方、石英ガラス管の外周壁に耐熱性材料の被膜
を形成して石英ガラス固有の強度を確保したた
め、光フアイバの製造技術を利用して極めて細く
でき、しかも高信頼性で高性能な分析用のガラス
管を得ることが可能である。 As described above, according to the present invention, a high-purity quartz glass layer is synthesized on the inner circumferential wall of the quartz glass tube, which is stable even at high temperatures, to prevent the precipitation of impurities into the sample passage, while the outer circumferential wall of the quartz glass tube is heat-resistant. The unique strength of silica glass was secured by forming a coating of a flexible material, making it possible to use optical fiber manufacturing technology to make it extremely thin and to obtain highly reliable and high-performance glass tubes for analysis. .
第１図は本発明によるガラス管の一実施例の断
面図、第２図はその製造手順の一部を表わす作業
原理図であり、図中の符号で１，１１は（溶融）
石英ガラス管、２，１２は（合成）石英ガラス
層、３は耐熱性材料の被膜、１３は加熱炉であ
る。
Fig. 1 is a sectional view of an embodiment of the glass tube according to the present invention, and Fig. 2 is a working principle diagram showing a part of the manufacturing procedure.
A quartz glass tube, 2 and 12 are (synthetic) quartz glass layers, 3 is a coating of heat-resistant material, and 13 is a heating furnace.
Claims (1)
ス層を合成すると共に前記石英ガラス管の外周壁
に耐熱性材料の被膜を形成したことを特徴とする
ガラス管。1. A glass tube, characterized in that a quartz glass layer is synthesized on the inner circumferential wall of the quartz glass tube by an internal attachment method, and a coating of a heat-resistant material is formed on the outer circumferential wall of the quartz glass tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10340380A JPS5727947A (en) | 1980-07-28 | 1980-07-28 | Glass tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10340380A JPS5727947A (en) | 1980-07-28 | 1980-07-28 | Glass tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5727947A JPS5727947A (en) | 1982-02-15 |
| JPS6240306B2 true JPS6240306B2 (en) | 1987-08-27 |
Family
ID=14353080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10340380A Granted JPS5727947A (en) | 1980-07-28 | 1980-07-28 | Glass tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5727947A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0250502U (en) * | 1988-10-03 | 1990-04-09 | ||
| CN103641300A (en) * | 2013-11-26 | 2014-03-19 | 连云港市盛昌照明电器有限公司 | Preparation method of high purity quartz, and quartz tube for low temperature heat exchanger and preparation method thereof |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60141546U (en) * | 1984-02-29 | 1985-09-19 | 株式会社島津製作所 | Gas chromatography mass spectrometer |
| JPH0246598U (en) * | 1988-09-24 | 1990-03-30 |
-
1980
- 1980-07-28 JP JP10340380A patent/JPS5727947A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0250502U (en) * | 1988-10-03 | 1990-04-09 | ||
| CN103641300A (en) * | 2013-11-26 | 2014-03-19 | 连云港市盛昌照明电器有限公司 | Preparation method of high purity quartz, and quartz tube for low temperature heat exchanger and preparation method thereof |
| CN103641300B (en) * | 2013-11-26 | 2016-01-13 | 连云港市盛昌照明电器有限公司 | High purity quartz preparation method and for cryogenic heat exchanger silica tube and preparation method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5727947A (en) | 1982-02-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Weltner Jr et al. | Matrix Isolation of High‐Temperature Vapors: Boric Oxide | |
| US4437870A (en) | Optical waveguide fiber cooler | |
| JP2860283B2 (en) | Rigid assemblies used in chromatography | |
| US5164999A (en) | Blackbody fired on silica fiber | |
| JPS6240306B2 (en) | ||
| US3282817A (en) | Glass electrode and method of making the same | |
| JPS5927595A (en) | Small cooler for photodetector | |
| Worthing | The temperature scale and the melting point of molybdenum | |
| Bosworth | The contact potential of nickel | |
| US4687500A (en) | Method for manufacturing an ion-sensitive electrode | |
| JPS6229377B2 (en) | ||
| JPS6168561A (en) | Capillary column for chromatograph | |
| JPS6127331B2 (en) | ||
| JPH0213268B2 (en) | ||
| FR495101A (en) | Metal wire, free of platinum and intended to be bonded, for incandescent lamps and apparatus with an oxygen-empty glass envelope, and method of making this metal wire | |
| US3721541A (en) | Method of manufacture of a nuclear magnetic resonance cell | |
| WO1986001601A1 (en) | Ion-sensitive electrode and method of making the same | |
| JPH0244220A (en) | Water-cooled light shielding apparatus for radiation thermometer | |
| JPS593029A (en) | Manufacture of preform for optical fiber retaining plane of polarization | |
| JP2005024361A (en) | Capillary and its manufacturing method | |
| JPH02201157A (en) | Quartz glass capillary | |
| JPS59102838A (en) | Devitrification-resistant molded article of fused quartz | |
| JPH0443789Y2 (en) | ||
| JPS6134121B2 (en) | ||
| JPS6118861A (en) | Measurement for capillary on column gas chromatogram |