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Method for measuring full fluorine sulphonyl resin and sulphonyl monomer content

A technology of fluorosulfonyl resin and sulfonyl monomer, applied in the polymer field, can solve the problems of difficult to meet requirements, many intermediate links, long test time for chemical testing methods, etc.

Inactive Publication Date: 2009-06-17
SHANDONG HUAXIA SHENZHOU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process takes several days, there are many intermediate links, and very skilled operation skills are required to ensure the reliability of the data. It is difficult to measure the sulfonyl monomer content of perfluorosulfonyl resin in a timely and accurate manner.
Long test times of chemical test methods are often difficult to meet when the production process needs to be adjusted according to the calculated sulfonyl monomer value

Method used

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  • Method for measuring full fluorine sulphonyl resin and sulphonyl monomer content
  • Method for measuring full fluorine sulphonyl resin and sulphonyl monomer content
  • Method for measuring full fluorine sulphonyl resin and sulphonyl monomer content

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A perfluorosulfonyl resin produced by Dongyue Group is selected, which is copolymerized with the following two monomers:

[0047]

[0048] Eight batches of perfluorosulfonyl resin samples with this structure have been selected to determine their sulfonyl monomer content using standard chemical analysis methods.

[0049] Set the value obtained by the chemical analysis method as the true value, and use this as the calibration standard for quantitative analysis by infrared spectroscopy.

[0050] The single-level attenuation total reflection infrared spectrum of a typical perfluorosulfonyl resin is shown in figure 1 : For the convenience of description, suppose that the sulfonyl monomer is located at 1430~1490cm -1 The peak in the area is at 1467cm -1 The nearby absorption band is No. 1 band, located at 940~1020cm -1 The peak position in the region is 983cm -1 The absorption band of is No. 2 band; located at 1030~1280cm -1 The peak in the area is at 1198cm -1 , 1147cm -1 The...

Embodiment 2

[0071] Take the infrared spectrum obtained by the test in Example 1. Use the software that comes with the instrument to analyze the absorbance values ​​of bands 1, 2, 3 and 4. The data are summarized in Table 3:

[0072] table 3

[0073] Batch

number

S*

1 / S

Band 1

Absorbance Band 2

Absorbance Band 4

Absorbance

R 41 **

R 42 ***

009 0.103 9.698 0.178 0.165 0.717 4.028 4.345 016 0.120 8.305 0.254 0.236 0.909 3.579 3.852 013 0.131 7.651 0.266 0.248 0.865 3.252 3.488 008 0.139 7.178 0.281 0.262 0.886 3.153 3.382 023 0.151 6.641 0.289 0.274 0.889 3.076 3.245 026 0.162 6.155 0.311 0.298 0.902 2.900 3.027 024 0.167 5.974 0.321 0.303 0.914 2.847 3.017 033 0.186 5.390 0.324 0.306 0.898 2.772 2.935

[0074] Note: *: The molar content of sulfonyl monomer is obtained by chemical analysis method;

[0075] **: Th...

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Abstract

A method for measuring sulphonyl monomer content of total fluosulphoylresin resin includes selecting total fluosulphonyl resin samples with different sulphonyl monomer contents, determining ATR-FTIR spectrum corresponding to each sample, selecting absorption spectrum band caused by sulphonyl monomer and carbon-fluorine bond from infrared spectrum as character absorption spectrum hand, setting up operation curve of absorption light intensity of said spectrum hand to sulphonyl monomer content, testing infrared spectrum of unknown sample to know sulphonyl monomer content based on obtained operation curve.

Description

Technical field [0001] The present invention belongs to the field of polymers, and relates to a method for measuring the content of perfluorosulfonyl resin sulfonyl monomers, in particular to the use of attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR) to quickly measure perfluorosulfonyl resin sulfonyl monomers. Method of acyl monomer content. Background technique [0002] Perfluorosulfonyl resins are generally copolymerized with tetrafluoroethylene monomers and perfluorovinyl ether monomers with sulfonyl fluoride groups, and sometimes other monomers are added for multi-component copolymerization. Perfluorosulfonyl resin can be hydrolyzed to obtain perfluorosulfonic acid resin. Perfluorosulfonic acid resin is a strong solid acid and can be used as ion exchange resin. It has good heat resistance, good electrochemical performance, chemical stability and mechanical strength. Advanced features; it can also be used as a carrier for a variety of chemical r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/35G01J3/42G06F19/00G01N21/3563
Inventor 秦胜高自宏张春玉崔晓梅张永明张恒
Owner SHANDONG HUAXIA SHENZHOU NEW MATERIAL
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