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Sulfonated aromatic polyamide containing fluorenyl and trifluoromethyl structures and preparation method thereof

A technology for sulfonating polyaramide and trifluoromethyl is applied in the field of aromatic sulfonated polymers and their preparation, which can solve the problems of complex synthesis and preparation process, high fuel permeability, low service temperature and the like, and achieves simple synthesis process. , the effect of high proton conductivity and good chemical oxidation resistance

Active Publication Date: 2015-01-28
江苏尚莱特医药化工材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commercialized proton exchange membranes are mainly aliphatic perfluorosulfonic acid polymer membranes. This kind of proton exchange membranes has disadvantages such as complicated synthesis and preparation process, high cost, high fuel permeability and low service temperature. Therefore, the development of new high-efficiency Performance proton exchange membrane materials have important academic research value and practical application significance

Method used

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  • Sulfonated aromatic polyamide containing fluorenyl and trifluoromethyl structures and preparation method thereof
  • Sulfonated aromatic polyamide containing fluorenyl and trifluoromethyl structures and preparation method thereof
  • Sulfonated aromatic polyamide containing fluorenyl and trifluoromethyl structures and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0020] In a 100ml dry three-necked flask equipped with nitrogen protection and a condenser tube, add 0.6103g (1.2mmol) of 9,9-bis(4-aminophenyl)fluorene-2,7-disulfonic acid (to sulfonate Structural unit content x=0.6 as an example), 0.3427g (0.8mmol) of 1,4-bis(4-amino-2-trifluoromethylphenoxy)benzene, 0.5165g (2mmol) of 4,4' -diphenyl ether diacid, 1.2412g (4mmol) of triphenyl phosphite, 0.3164g (4mmol) of pyridine, 0.4048g (4mmol) of triethylamine, 0.2220g (2mmol) of calcium chloride and 6.3ml of N,N -Dimethylacetamide, after the co-condensation reaction at 130°C for 4 hours, pour it into ethanol to obtain a fibrous solid polymer, further soak it in 1mol / L hydrochloric acid solution for 12 hours, filter and dry to obtain the product, The yield was 97% (based on the conversion rate of 9,9-bis(4-aminophenyl)fluorene-2,7-disulfonic acid); 1 H NMR (DMSO, 400MHz) as attached figure 1 shown.

Embodiment 2

[0022] In a 100ml dry three-necked flask equipped with nitrogen protection and a condenser tube, add 0.6103g (1.2mmol) of 9,9-bis(4-aminophenyl)fluorene-2,7-disulfonic acid (to sulfonate Structural unit content x=0.6 as an example), 0.3427g (0.8mmol) of 1,4-bis(4-amino-2-trifluoromethylphenoxy)benzene, 0.5165g (2mmol) of 4,4' -diphenyl ether diacid, 2.4824g (8mmol) of triphenyl phosphite, 0.6328g (8mmol) of pyridine, 0.8096g (8mmol) of triethylamine, 0.6660g (6mmol) of calcium chloride and 14.1ml of N,N -Dimethylacetamide, after the co-condensation reaction at 100°C for 8 hours, pour it into ethanol to obtain a fibrous solid polymer, further put it into 1mol / L sulfuric acid solution and soak it for 24 hours, filter and dry to obtain the product, The yield was 96% (based on the conversion of 9,9-bis(4-aminophenyl)fluorene-2,7-disulfonic acid).

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Abstract

The invention provides sulfonated aromatic polyamidecontaining fluorenyl and trifluoromethyl structures. The preparation method of the sulfonated aromatic polyamide containing the fluorenyl and trifluoromethyl structures comprises the following steps: adding a sulfonated diamine monomer containing the fluorenyl structure, an aromatic diamine monomer containing the trifluoromethyl structure and aromatic diacid into an organic solvent, carrying out polycondensation in the presence of a catalyst and a solubilizer at 100-130 DEG C for 4-8 hours to obtain a fibroid polymer, and further carrying acidic solution exchange to obtain a sulfonated aromatic polyamide polymer. The sulfonated aromatic polyamide has favorable film forming performance; and the prepared polymer thin films have excellent dimensional stability, favorable chemical oxidation resistance and relatively high proton conductivity, and can be used as a proton exchange film material for fuel cells.

Description

technical field [0001] The invention belongs to the field of aromatic sulfonated polymers and their preparation, in particular to a class of sulfonated polyarylamide polymers containing both fluorenyl and trifluoromethyl structures and a preparation method thereof. Background technique [0002] Proton exchange membrane fuel cell is a new energy battery that has developed rapidly in recent years. It has the characteristics of fast start-up, high energy density, and environmental protection. It can be used in vehicles, fixed power stations, portable power supplies and other fields. Proton exchange membrane is a key technical material in proton exchange membrane fuel cells, which plays an important role in conducting protons and blocking fuel in fuel cells, and its performance directly affects the overall performance of fuel cells. Currently commercialized proton exchange membranes are mainly aliphatic perfluorosulfonic acid polymer membranes. This type of proton exchange membr...

Claims

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Application Information

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IPC IPC(8): C08G69/42C08K3/16C08K5/17C08J5/18C08L77/10
Inventor 汪称意沈斌张海文陈文涛徐常李坚任强
Owner 江苏尚莱特医药化工材料有限公司
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