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首页> 外文期刊>Journal of Applied Polymer Science >A fluorine gas monitoring system for the direct oxy-fluorination of polyethylene sheets
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A fluorine gas monitoring system for the direct oxy-fluorination of polyethylene sheets

机译：用于聚乙烯薄板直接氧氟化的氟气监测系统

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A new technique is presented to measure the concentration of fluorine in a reaction gas consisting of fluorine, nitrogen, and oxygen in a reaction chamber. The method is described as follows: The gas is directly taken from the chamber using a peristaltic pump and dissolved in a TISAB (total ionic strength adjusted buffer) solution. The concentration of fluorine ion is measured using the selected fluorine ion electrode, the output voltage of which is monitored. The concentration of the fluorine ion and the output voltage follow the Nernst relation so that the measurement of the output voltage of the system enables us to know the concentration of fluorine gas. This technique was applied to monitor the concentration of fluorine gas in the chamber in which a sheet of polyethylene nonwoven fabric was continuously oxy-fluorinated. The monitored concentration of the fluorine gas as a function of time coincided with the variation of the incorporated fluorine in the sheet measured by X-ray fluorescence (XRF) spectroscopy after the treatment. This technique can be best used for process control of the continuous oxy-fluorination of polymeric materials. (C) 2002 Wiley Periodicals, Inc. [References: 10]
机译：提出了一种新技术来测量反应室中由氟，氮和氧组成的反应气体中氟的浓度。该方法描述如下：气体使用蠕动泵直接从反应室中取出，并溶解在TISAB（总离子强度调节缓冲液）溶液中。使用选定的氟离子电极测量氟离子的浓度，并监控其输出电压。氟离子的浓度和输出电压遵循能斯特关系，因此系统输出电压的测量使我们能够知道氟气的浓度。将该技术用于监测室中的氟气浓度，在该室中，一片聚乙烯无纺布被连续地氧氟化。所监测的氟气浓度随时间的变化与处理后通过X射线荧光（XRF）光谱法测量的片材中所含氟的变化一致。该技术最适合用于聚合物材料连续氧氟化的过程控制。 （C）2002 Wiley Periodicals，Inc. [参考：10]

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