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Preparation method of chlorosulfonated polyether-ether-ketone composite material film

A technology of composite film and chlorosulfonated polyether, which is applied in the field of polyether ether ketone materials, can solve the requirements of an energy system that cannot meet the requirements of efficient, clean, economical and safe energy systems, dimensional stability, and the decline in mechanical strength and alcohol resistance , Reaction catalyst poisonous cathode performance decline and other problems, to achieve the effect of improving water absorption and water retention capacity, good anti-protonic acid corrosion performance, and easy to implement

Active Publication Date: 2018-06-05
YIBIN TIANYUAN GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The huge energy system established in the 20th century can no longer meet the requirements of the future society for an efficient, clean, economical and safe energy system, and energy development is facing huge challenges
The existing sulfonated polyether ether ketone composite membrane also has common problems: when the temperature is high, its dimensional stability, mechanical strength, and alcohol resistance all have a relatively large decline. and use in high temperature environments
[0007] The problem of alcohol permeation caused by the existing use of Nafion series full sulfonic acid proton exchange membranes is very serious, mainly manifested in seriously affecting the performance of the cathode, and at the same time causing reaction catalyst poisoning, decreased performance of the cathode, waste of fuel, decreased electrical conductivity, and greatly shortened battery life. Insufficiencies such as lifespan, and the high price of the existing all-sulfonic acid proton exchange membrane have caused great resistance to the wide-scale application of fuel cells

Method used

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  • Preparation method of chlorosulfonated polyether-ether-ketone composite material film
  • Preparation method of chlorosulfonated polyether-ether-ketone composite material film
  • Preparation method of chlorosulfonated polyether-ether-ketone composite material film

Examples

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Effect test

Embodiment 1

[0038] 1. Synthesis of chlorosulfonated fluoroketones

[0039]Put 20 parts of 4,4-difluorobenzophenone, 15 parts of chlorosulfonic acid, and 65 parts of oleum into a three-necked flask equipped with a mechanical stirring device, a thermometer and a coil condenser, and continuously stir at 2°C / Min heating rate, heating to 110°C, continuous insulation reaction for 360min, cooling down to 40°C, and putting the mixture into ice water for cooling, using potassium hydroxide solution to neutralize the solution to neutral, using sodium chloride Salt out, filter to obtain solid crude product, recrystallize with ethanol and water, and finally obtain chlorosulfonated fluoroketone;

[0040] 2. Synthesis of chlorosulfonated polyetheretherketone

[0041] In a three-necked flask equipped with a stirrer, a thermometer, and a coil condenser, add 3 parts of 4,4-difluorobenzophenone, 5 parts of chlorosulfonated fluoroketone, 3 parts of potassium carbonate, 1 part of sodium carbonate, 5 parts ...

Embodiment 2

[0045] 1. Synthesis of chlorosulfonated fluoroketones

[0046] Put 25 parts of 4,4-difluorobenzophenone, 15 parts of chlorosulfonic acid, and 60 parts of oleum into a three-necked flask equipped with a mechanical stirring device, a thermometer and a coil condenser, and continuously stir at 2°C / Min heating rate, heating to 110°C, continuous insulation reaction for 390min, then cooling down to 50°C, and putting the mixture into ice water for cooling, using potassium hydroxide solution to neutralize the solution to neutral, using sodium chloride for Salt out, filter to obtain solid crude product, recrystallize with ethanol and water, and finally obtain chlorosulfonated fluoroketone;

[0047] 2. Synthesis of chlorosulfonated polyetheretherketone

[0048] In a three-neck flask equipped with a stirrer, a thermometer, and a coil condenser, add 4 parts of 4,4-difluorobenzophenone, 7 parts of chlorosulfonated fluoroketone, 4 parts of potassium carbonate, 2 parts of sodium carbonate, ...

Embodiment 3

[0052] 1. Synthesis of chlorosulfonated fluoroketones

[0053] Put 30 parts of 4,4-difluorobenzophenone, 20 parts of chlorosulfonic acid, and 50 parts of oleum into a three-necked flask equipped with a mechanical stirring device, a thermometer and a coil condenser, and continuously stir at 4 ° C / Min heating rate, heating to 110°C, continuous insulation reaction for 420min, then cooling down to 40°C, and putting the mixture into ice water for cooling, using potassium hydroxide solution to neutralize the solution to neutral, using sodium chloride Salt out, filter to obtain solid crude product, recrystallize with ethanol and water, and finally obtain chlorosulfonated fluoroketone;

[0054] 2. Synthesis of chlorosulfonated polyetheretherketone

[0055] In a three-necked flask equipped with a stirrer, a thermometer, and a coil condenser, add 5 parts of 4,4-difluorobenzophenone, 8 parts of chlorosulfonated fluoroketone, 5 parts of potassium carbonate, 2 parts of sodium carbonate,...

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Abstract

The invention belongs to the field of polyether-ether-ketone materials, and in particular discloses a preparation method of a chlorosulfonated polyether-ether-ketone composite material film. The preparation method comprises the following steps: (1) synthesis of chlorosulfonated fluorine; (2) synthesis of chlorosulfonated polyether-ether-ketone; and (3) preparation of the chlorosulfonated polyether-ether-ketone composite material film. Sulfonic acid groups and chlorosulfonic acid groups are introduced to a compound of a polyether-ether-ketone strtucture through reaction principles such as in-situ polymerization, nucleophilic substitution and electrophilic substitution of an aromatic compound. The prepared composite film can be used for a long time at 250 DEG C, is relatively good in high-temperature resistance, has a relatively high alcohol resisting rate, can ensure the safety of an electrode to the maximum extent, and prevents scrap of a battery as a result of poisoning of the electrode. The mechanical property is enhanced greatly compared with that of a marketed product. The film has better strength and toughness.

Description

technical field [0001] The invention belongs to the field of polyether ether ketone materials, and in particular relates to a preparation method of a chlorosulfonated polyether ether ketone composite film used for fuel cells. Background technique [0002] Since the development of human society, most of the energy conversion is realized through the heat engine process, and the heat engine process is limited by the Carnot cycle, which not only has low conversion efficiency, but also causes serious energy waste, and produces a large amount of dust, carbon dioxide, nitrogen and oxygen Harmful substances such as chemical compounds and sulfides, resulting in air, water, soil and other pollution, seriously threaten the living environment of human beings. Environmental protection has been deeply rooted in the hearts of the people and has become the core of the sustainable development of human society. It is a key factor affecting the current energy decision-making and technology ori...

Claims

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Application Information

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IPC IPC(8): C08G65/40H01M8/1025H01M8/1072H01M8/1051
CPCC08G65/4056C08G2650/40C08G2650/62H01M8/1025H01M8/1051H01M8/1072Y02E60/50
Inventor 侯天武颜华佘国华
Owner YIBIN TIANYUAN GRP CO LTD
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