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Preparation method for polyether ether ketone

A polyether ether ketone and methoxy technology, which is applied in the field of preparation of heat-resistant polymer materials, can solve the problems of high freezing point, polyether ether ketone contains impurities, etc., and achieves lower synthesis temperature, easy processing, and convenient subsequent processing. Effect

Inactive Publication Date: 2018-04-27
JIANGHAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem in the prior art that the high-temperature product has a high freezing point and polyetheretherketone contains impurities, the embodiment of the present invention provides a preparation method of polyetheretherketone

Method used

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  • Preparation method for polyether ether ketone
  • Preparation method for polyether ether ketone
  • Preparation method for polyether ether ketone

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Under the protection of nitrogen, 10.90g of 4,4'-difluorobenzophenone was added to the solvent of 218.00g of 1-butyl-3-methylimidazolium bromide to obtain 4,4'-difluorobenzophenone solution, wherein the structure of 1-butyl-3-methylimidazolium bromide is shown as Heat the 4,4'-difluorobenzophenone solution to 40°C while stirring the 4,4'-difluorobenzophenone solution to fully dissolve the 4,4'-difluorobenzophenone, then cool to Standby at room temperature; under the protection of nitrogen, 5.50g of 1,4-benzenediol, 0.69g of anhydrous potassium carbonate and 4.77g of anhydrous sodium carbonate were uniformly mixed and divided into four equal parts, and 4,4'-bis In the fluorobenzophenone solution, keep stirring at a high speed (stirring speed can be 100-500 rpm), the interval between two adjacent additions is 30 minutes, the temperature is raised from normal temperature to 140 ° C, and the heating rate is 5 ° C / min, Insulate for 2 hours to fully dissolve 4,4'-difluoro...

Embodiment 2

[0040] Under argon protection, 21.80 g of 3,3'-difluorobenzophenone was added to a solvent of 218.00 g of 1,3-bis(2-methoxy-2-oxoethyl)imidazole chloride to give 44 '-difluorobenzophenone solution, wherein the structure of chlorinated 13-bis(2-methoxy-2-oxyethyl)imidazole is shown as: Heat the 4,4'-difluorobenzophenone solution to 25°C while stirring the 4,4'-difluorobenzophenone solution to fully dissolve the 4,4'-difluorobenzophenone, then cool to Standby at room temperature; under the protection of argon, 22.83g of bisphenol A, 1.38g of anhydrous potassium carbonate and 9.64g of anhydrous sodium carbonate were uniformly mixed and divided into four equal parts, and 3,3'-difluorodi In the benzophenone solution, keep stirring at a high speed (the stirring speed can be 100-500 rpm), the interval between two adjacent additions is 20 minutes, the temperature is raised from room temperature to 120 ° C, the heating rate is 10 ° C / min, and the temperature is kept for 1 h , fully...

Embodiment 3

[0044] Under the protection of argon, add 10.90g of 4,4'-difluorobenzophenone into the solvent of 327.00g of 1,3-bis(2-methoxy-2-oxyethyl)imidazole hexafluorophosphate, Obtain 4,4'-difluorobenzophenone solution, wherein, the structure of 1,3-bis(2-methoxy-2-oxyethyl)imidazole hexafluorophosphate is shown as: Warm up the 4,4'-difluorobenzophenone solution to 60°C while stirring the 4,4'-difluorobenzophenone solution to fully dissolve it, then cool it to room temperature for later use; under the protection of argon, put 16.02g of 2,6-dihydroxynaphthalene, 0.35g of anhydrous potassium carbonate and 4.39g of anhydrous sodium carbonate were evenly mixed and divided into five equal parts, and added to the 4,4'-difluorobenzophenone solution respectively, Continuous high-speed stirring (stirring speed can be 100-500 rpm), the interval between two adjacent additions is 40min, the temperature is raised from room temperature to 120°C, the heating rate is 20°C / min, and the heat preservat...

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Abstract

The invention discloses a preparation method for polyether ether ketone, belonging to the field of preparation of heat-resistant polymer materials. According to the preparation method, at least one selected from a group consisting of 1-butyl-3-methylimidazolium bromide, 1,3-bis(2-methoxy-2-ethoxy)imidazolium chloride, 1,3-bis(2-methoxy-2-ethoxy)imidazolium hexafluorophosphate, 1,3-bis(2-methoxy-2-ethoxy)imidazolium acetate and tetramethyl guanidine tetrafluoroborate is used as a solvent for synthesis of polyether ether ketone. The solvent provided in embodiments of the invention ensures that areaction is always carried out in a liquid phase and a liquid phase state is maintained after completion of the reaction and cooling to normal temperature, which greatly facilitates subsequent treatment; the solvent reduces a synthesis temperature, which is favorable for energy conservation and facilitates addition; moreover, the solvent can promote a nucleophilic substitution reaction, so the yield of polyether ether ketone is increased. At the same time, the prepared powdery polyether ether ketone can be washed so as to obtain a pure product, and the prepared polyether ether ketone has goodliquid-phase mass transfer performance.

Description

technical field [0001] The invention relates to the field of preparation of heat-resistant polymer materials, in particular to a preparation method of polyether ether ketone. Background technique [0002] Polyetheretherketone (Poly-Ether-Ether-Ketone; PEEK) is a semi-crystalline aromatic plastic engineering plastic with high heat resistance, radiation resistance, chemical resistance, abrasion resistance, fatigue resistance, and high impact strength. And excellent flame retardant properties and excellent electrical properties and other characteristics. With its excellent performance, polyether ether ketone can replace traditional materials such as metal and ceramics in many fields, and has become one of the most popular high-performance engineering plastics today. [0003] The existing method for preparing polyetheretherketone is to use 4,4'-difluorobenzophenone and 1,4-benzenediol as raw materials, anhydrous potassium carbonate and anhydrous sodium carbonate as catalysts, d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G8/02
CPCC08G8/02
Inventor 尤庆亮付华钱新华何丹曹一平刘继延
Owner JIANGHAN UNIVERSITY
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