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Analysis and determination method of perfluor n-pro-pyl vinyl ether

A technology of n-propyl vinyl ether and a determination method, which is applied in the directions of analysis materials, measuring devices, material separation, etc., can solve the problems such as being unsuitable for routine analysis of enterprises and expensive instruments, and achieve the effect of high practical value and simple method.

Inactive Publication Date: 2009-05-20
SHANDONG HUAXIA SHENZHOU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to quantitatively analyze it with infrared analysis and nuclear magnetic resonance, and the price of the instrument is relatively expensive, which is not suitable for routine analysis in enterprises

Method used

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  • Analysis and determination method of perfluor n-pro-pyl vinyl ether
  • Analysis and determination method of perfluor n-pro-pyl vinyl ether
  • Analysis and determination method of perfluor n-pro-pyl vinyl ether

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 1.1 Instrument

[0019] Agilent 6890 Chromatograph

[0020] 1.2 Chromatographic conditions

[0021] Detector: FID (Flame Ionization Detector)

[0022] Chromatographic column: DB-17

[0023] Column length: ￠0.25*30m

[0024] Column temperature: 40°C

[0025] Injector: 120°C

[0026] Detector: 300°C

[0027] 1.3 Sample analysis

[0028] Since the sample is extremely volatile, be careful to move quickly when injecting the sample. Quickly sample 1uL for chromatographic analysis, and obtain the content of perfluoro-n-propyl vinyl ether according to the following formula.

[0029]

[0030] In the formula: A is the peak area of ​​perfluoro-n-propyl vinyl ether

[0031] ΣA is the total area of ​​each peak.

[0032] Such as figure 1 Among them, the peak area of ​​perfluoro-n-propyl vinyl ether is 658020, and the peak area of ​​hydride is 263, so the content of perfluoro-n-propyl vinyl ether is:

[0033]

[0034] The following is the comparison of the results of...

Embodiment 2

[0043] Embodiment 2: the selection of chromatographic conditions

[0044] The two groups of DB-1, DB-200, DB-17 with a liquid film of 0.32um and the DB-1, DB-200, DB-17 with a liquid film of 1.0um are respectively installed in the On the Agilent 6890 chromatographic instrument, the separation degree test was carried out at different temperatures (column temperature), and the results are shown in Table 2 and Table 3. The DB-1, DB-200 and DB-17 are chromatographic column types.

[0045] Table 2 Resolution at different temperatures for a chromatographic column with a liquid film thickness of 1.0um

[0046]

[0047] NOTE: Resolution indicates how well the components are separated from each other in the column. Adjacent two chromatographic peaks can be completely separated when the resolution is greater than 1.5. Only when the resolution is good can the measurement results have sufficient parallelism and accuracy.

[0048] Table 3 Resolution of the column with a liquid film ...

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Abstract

The invention discloses hexafluoro-Propoxyethylene analyzing and measuring method. It includes the following steps: processing gas-chromatography analysis for the hexafluoro-Propoxyethylene; using area normalization to directly measure its content; chromatographic analysis temperature is 40 degree centigrade; chromatographic column type is DB-17; liquid membrane is 1.0um; detector is flame ionization. The invention has reliable result, simple operation, can be used to guide hexafluoro-Propoxyethylene study and production.

Description

technical field [0001] The invention relates to a method for analyzing and measuring perfluoro-n-propyl vinyl ether. Background technique [0002] Perfluoro-n-propyl vinyl ether is an important fluorine-containing synthetic intermediate, which is formed by addition, cracking and rectification of hexafluoropropylene oxide. raw material. In the production process, due to the existence of traces of water, hydrides and other impurities that are very close to the boiling point of perfluoro-n-propyl vinyl ether will be generated in the production. Due to the existence of these impurities, the quality of the produced PFA will be affected. . Therefore, high-purity perfluoro-n-propyl vinyl ether is required in production. However, it is difficult to quantitatively analyze it with infrared analysis and nuclear magnetic resonance, and the price of the instrument is relatively expensive, which is not suitable for routine analysis in enterprises. Contents of the invention [0003] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/02G01N30/68G01N30/60
Inventor 董光辉张永明高洪光王丽萍
Owner SHANDONG HUAXIA SHENZHOU NEW MATERIAL