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Long side chain type fluorine-containing sulfonated polyarylether compound based on bisphenol S and preparation method of long side chain type fluorine-containing sulfonated polyarylether compound

A technology of sulfonated polyarylethers and compounds, which is applied in the field of proton exchange membrane materials, can solve the problems of further improvement of proton conductivity, limited side chain length of sulfonated products, and harsh polymerization conditions, so as to improve oxidation stability and price Inexpensive, good mechanical properties

Active Publication Date: 2018-03-16
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its polymerization conditions are relatively harsh, it is easy to crosslink, and the length of the side chain of the sulfonated product is limited, so the proton conductivity needs to be further improved.
In addition, the oxidation stability of its fluorine-free main chain needs to be further improved to meet the harsh operating environment of various battery systems

Method used

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  • Long side chain type fluorine-containing sulfonated polyarylether compound based on bisphenol S and preparation method of long side chain type fluorine-containing sulfonated polyarylether compound
  • Long side chain type fluorine-containing sulfonated polyarylether compound based on bisphenol S and preparation method of long side chain type fluorine-containing sulfonated polyarylether compound
  • Long side chain type fluorine-containing sulfonated polyarylether compound based on bisphenol S and preparation method of long side chain type fluorine-containing sulfonated polyarylether compound

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Example 1 Preparation of fluorine-containing polyarylether compounds

[0035] 1.0125 g (3.0 mmol) decafluorobiphenyl and 0.4204 g (1.5 mmol) bisphenol S, 0.4956 g (1.5 mmol) 2,2'-diallyl bisphenol S, 0.6836 g (4.5 mmol) cesium fluoride, Add 0.05 g of calcium hydride (for drying) and 7 mL of N-methylpyrrolidone into a three-necked flask, and magnetically stir at room temperature for 24 hours under the protection of argon. After the reaction, pour the reaction solution into aqueous methanol (1 : 1, v / v), filtered, collected and dried in a vacuum oven at 60-100°C for 10-40 hours to obtain a fluorinated polyarylether compound with an intrinsic viscosity of 1.2 dL / g and a yield of 95%. The data of the proton nuclear magnetic resonance spectrum of this compound are: 1 H NMR (400 MHz, CDCl 3 , ppm)δ 3.62 (d, 2H), 5.17 (t, 2H),5.99 (m, 1H), 6.80 (d, 1H), 7.15 (d, 1H), 7.75 (d, 2H), 7.87 (s, 1H), 7.98(d, 2H). The infrared data is: FT-IR (cm -1 ) υ 2929, 1648, 1591, 1484, 1...

Embodiment 2

[0036] Example 2 Preparation of Fluorine-Containing Polyarylether Compounds

[0037] Change the feeding amount of bisphenol S in Example 1 to 0.5256 g (2.1 mmol), and the feeding amount of 2,2'-diallyl bisphenol S to 0.2974 g (0.9 mmol), and the rest of the operations are as in Example 1 , the intrinsic viscosity of the obtained fluorine-containing polyarylether compound was 0.9dL / g, and the yield was 93%.

Embodiment 3

[0038] Example 3 Preparation of Fluorine-Containing Polyarylether Compounds

[0039] Change the feeding amount of bisphenol S in Example 1 to 0.2252 g (0.9 mmol), and the feeding amount of 2,2'-diallyl bisphenol S to 0.6938 g (2.1 mmol), and the rest of the operations are as in Example 1 , the intrinsic viscosity of the obtained fluorine-containing polyarylether compound was 1.1 dL / g, and the yield was 91%.

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Abstract

The invention discloses a long side chain type fluorine-containing sulfonated polyarylether compound based on bisphenol S and a preparation method of the long side chain type fluorine-containing sulfonated polyarylether compound. The preparation method comprises the following steps: preparing a series of polyarylether compounds which contain allyls and fluorine atoms by polycondensation of 2,2'-diallyl bisphenol S, the bisphenol S and decafluorobiphenyl according to different ratios; and then reacting the series of polyarylether compounds with excessive 3-mercapto-1- sodium propanesulfonate, and introducing sulfos at the positions of the allyls to finally obtain the long side chain type fluorine-containing sulfonated polyarylether compound which has different ion contents and is based on the bisphenol S. The compound has a stable fluorine-containing aromatic main chain and a soft sulfonated side chain, and can be cast into a membrane by a solution, and an obtained proton exchange membrane has the advantages of excellent proton conductivity, oxidation stability, mechanical property, thermal stability and the like.

Description

technical field [0001] The invention relates to a long side chain fluorine-containing sulfonated polyarylether compound based on bisphenol S and a preparation method thereof, belonging to the field of proton exchange membrane materials. Background technique [0002] The proton exchange membrane is the core component of the hydrogen-oxygen fuel cell. During the operation of the battery, it plays the role of providing hydrogen ion transmission channels and isolating the reaction gases at the two electrodes. The performance of the proton exchange membrane directly affects the output voltage, energy conversion efficiency and usage of the battery. performance such as lifespan. At present, the perfluorosulfonic acid type proton exchange membrane is widely used, the most representative one is the Nafion membrane of DuPont Company of the United States, which has the advantages of high proton conductivity, good mechanical properties and excellent chemical stability. However, the dis...

Claims

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Application Information

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IPC IPC(8): C08G65/48C08G65/40H01M8/1027H01M8/1032H01M8/1072
CPCC08G65/4056C08G65/4093C08G65/485H01M8/1027H01M8/1032H01M8/1072Y02E60/50
Inventor 陈栋阳陈夏琳
Owner FUZHOU UNIV
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