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Perfluorooctane-based compound and method for preparing perfluorooctane-containing terminated polyaryl ether sulphone

A technology for perfluorooctyl and polyaryl ether sulfone is applied in the field of preparing polyaryl ether sulfone containing perfluorooctane end groups and perfluorooctane compounds, and can solve the problems of reducing the friction coefficient of materials, high acquisition cost and preparation method. Cumbersome and other problems, to achieve the effect of increasing the water contact angle

Inactive Publication Date: 2015-04-08
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A small amount of active compounds containing perfluorooctyl groups are introduced into the polyarylethersulfone molecular chain as end groups to reduce the surface energy of the material, thereby reducing the friction coefficient of the material, which meets the modification needs of special engineering plastics. The preparation methods of some perfluorooctyl compounds are cumbersome, the acquisition cost is high, and the process needs to be optimized urgently

Method used

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  • Perfluorooctane-based compound and method for preparing perfluorooctane-containing terminated polyaryl ether sulphone
  • Perfluorooctane-based compound and method for preparing perfluorooctane-containing terminated polyaryl ether sulphone
  • Perfluorooctane-based compound and method for preparing perfluorooctane-containing terminated polyaryl ether sulphone

Examples

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Effect test

Embodiment 1

[0042] Add 14.67g of anhydrous aluminum chloride and 43mL of fluorobenzene into a single-necked flask equipped with a stirring device, start stirring, and slowly mix 43.25g of perfluorooctanoyl chloride and 50mL of fluorobenzene (a total of 93mL of fluorobenzene) at -10°C Put it into a single-necked bottle, install a calcium chloride drying tube at the mouth of the bottle to ensure the anhydrous environment of the system, stir at room temperature for 5 hours, pour the product into an aqueous HCl solution with a mass fraction of 1%, let it stand for liquid separation, and use the lower organic phase in sequence Weak alkaline water (pH 7.5-8.5), deionized water, and DMSO were washed twice each (stand still after each washing, and the lower organic phase was collected after layering to continue washing), and the finally obtained lower organic phase was distilled under reduced pressure. , to obtain about 40 g of a colorless liquid product, namely perfluorooctyl-(4-fluorophenyl) ket...

Embodiment 2

[0044] Add 6.36g 4,4'-difluorodiphenylsulfone and 6.39g 4,4'-dihydroxydiphenylsulfone to a three-necked flask equipped with a mechanical stirring device, a thermometer, a water heater, a condenser tube and a nitrogen protection device (102%), 2.97g anhydrous sodium carbonate, with 30mL sulfolane (TMS) as reaction solvent, solid content 25%, add 15mL toluene as water-carrying agent. The temperature of the system was raised to 140°C, 150°C, and 160°C with water for 1 hour respectively, the toluene was distilled off, the temperature was raised to 200°C for 3 hours, the temperature was lowered to 160°C, and 0.5 mL of capping agent perfluorooctyl-(4-fluorophenyl ) methyl ketone, the temperature was gradually raised to 200°C for 3 hours, the product was poured into deionized water, after crushing, it was washed with deionized water and absolute ethanol for 6 times, and the product was vacuum-dried at 80°C to obtain a white perfluorooctane end group Polyarylethersulfone powder, about...

Embodiment 3

[0046] Add 6.36g of 4,4'-difluorodiphenylsulfone and 6.51g of 4,4'-dihydroxydiphenylsulfone into a three-necked flask equipped with a mechanical stirring device, a thermometer, a water heater, a condenser tube and a nitrogen protection device (104%), 3.03g anhydrous sodium carbonate, with 30mL sulfolane (TMS) as reaction solvent, solid content 25%, add 15mL toluene as water-carrying agent. The temperature of the system was raised to 140°C, 150°C, and 160°C with water for 1 hour, and the toluene was evaporated, and the temperature was raised to 200°C for 3 hours. The product was vacuum-dried at 80° C. to obtain white hydroxyl-terminated polyarylethersulfone powder, about 9.52 g, with a yield of 85%.

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Abstract

The invention relates to a perfluorooctane compound and a method for preparing perfluorooctane-containing terminated polyaryl ether sulphone and belongs to the technical field of fluororesin preparation. The method comprises the following steps: preparing a perfluorinated compound by adopting Friedel-Crafts acylation; and terminating polyaryl ether sulphone molecular chain (obtained through solution polycondensation) by using the perfluorinated compound, wherein the obtained perfluorooctane terminated polyaryl ether sulphone material has relatively low glass-transition temperature, and relatively low plasticizing condition; and meanwhile, a film material prepared by a solution casting method has a relatively large water contact angle and obvious hydrophobic property, and can be applied to spare parts such as civil and military anticorrosion part coatings and friction bearing valve plates.

Description

technical field [0001] The invention belongs to the technical field of fluororesin preparation, and in particular relates to a perfluorooctyl compound and a method for preparing polyaryl ether sulfone containing perfluorooctane end groups. technical background [0002] Polyarylethersulfone is a high-performance special engineering plastic that was successfully developed and produced by various countries in the world in the 1970s. Compared with general-purpose plastics, this type of material has superior thermal stability, high temperature creep resistance, and mechanical properties. Significant advantage. Since the polyarylethersulfone material itself has a low friction coefficient and has good adhesion to metals, people modify it to make various engineering anti-corrosion coatings, kitchen utensils and mechanical parts to meet daily life and industrial production. need. [0003] The fluorine atom is the most electronegative element known. The bond length of the fluorine-c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C49/80C07C45/46C08G65/48C08G65/40
CPCC07C45/46C07C49/80C08G65/40C08G65/48C08G2650/04
Inventor 姜振华朱晔张海博丁连俊王永鹏姜波商赢双
Owner JILIN UNIV
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