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High-strength low-chroma polyether-ether-ketone and preparation method thereof

A technology of polyether ether ketone and pressure, which is applied in the field of engineering plastics, can solve the problems of complex polyetheretherketone process, undiscovered, and many influencing factors, and achieve the effects of shortening the reaction time, brightening the color, and reducing the reaction temperature

Active Publication Date: 2021-11-02
JILIN ZHONGYAN HIGH PERFORMANCE PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation of polyetheretherketone required by this requirement is complex and has many influencing factors, and no relevant technology has been found to be disclosed.

Method used

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  • High-strength low-chroma polyether-ether-ketone and preparation method thereof

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preparation example Construction

[0028] A kind of preparation method of polyether ether ketone provided by the invention comprises the following steps:

[0029] Under the pressure of 0.15MPa~1.0MPa in an inert atmosphere, the first polymerized monomer and the second polymerized monomer undergo a nucleophilic polycondensation reaction in an inert aprotic solvent in the presence of alkali metal carbonate to obtain polyether ether ketone;

[0030] The first polymerizable monomer is hydroquinone, biphenol, 4,4'-dihydroxybenzophenone, 2,2-bis(4-hydroxyphenyl)propane, 1,3-bis- Any one or more of (p-hydroxybenzoyl)benzene, 1,4-bis-(p-hydroxybenzoyl)benzene, α-naphthol and β-naphthol;

[0031] The second polymerizable monomer is 4,4'-difluorobenzophenone, 2,4'-difluorobenzophenone, 4-fluoro-4'-chloro-benzophenone, 2-fluoro- 4'-chloro-benzophenone, 2-chloro-4'-fluoro-benzophenone, diphenyl ether, 4,4'-diphenoxybenzophenone, terephthaloyl chloride and isophthalic acid Any one or more of diformyl chlorides.

Embodiment 1

[0035] Add 530.54g of diphenyl sulfone, 110.10g of 4,4'-difluorobenzophenone, 60.71g of sodium carbonate, 53.22g of hydroquinone into the French mechanically stirred autoclave, Pure nitrogen, after repeating three times, completely replace the air in the system with nitrogen, then start to pressurize to 0.2MPa, heat to melt, start stirring to 100rpm / min, raise the temperature to 160°C for 30 minutes, continue heating to 200°C for 30 minutes , the temperature is raised to 260°C, and the reaction is performed at a constant temperature until the viscosity of the reaction system reaches 410Pa.s, and the reaction process is monitored through the viscosity; the viscosity reaches the detection value, and the degree of polymerization of the molecules meets the requirements. At this time, the reaction time is 90 minutes. Pour the material into cold distilled water to obtain a white lump, crush the white lump with a pulverizer, wash with ethanol for 5 to 6 times to remove the solvent dip...

Embodiment 2

[0037]Add 780.63g of diphenyl sulfone, 176.16g of 4,4'-difluorobenzophenone, 97.13g of sodium carbonate, 85.15g of hydroquinone into the French mechanically stirred autoclave, Pure nitrogen, after repeating three times, completely replace the air in the system with nitrogen, then start to pressurize to 0.5MPa, heat to melt, start stirring to 100rpm / min, heat up to 160°C for 30 minutes, continue heating to 200°C for 30 minutes , heat up to 250°C, and react at a constant temperature until the viscosity of the reaction system reaches 410Pa.s. At this time, the reaction time is 80 minutes. Pour the material into cold distilled water to obtain a white block. Use a pulverizer to crush the white block. Wash with ethanol for 5 to 6 times to remove the solvent diphenyl sulfone, wash with distilled water for 5 to 6 times to remove the inorganic salts generated by the reaction, and obtain a white powder, prepare a standard sample with a small injection molding machine, and test the chroma...

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Abstract

The invention discloses high-strength and low-chroma polyether-ether-ketone and a preparation method thereof. The preparation method of the polyether-ether-ketone comprises the following steps: carrying out nucleophilic polycondensation reaction on a first polymeric monomer and a second polymeric monomer in an inert aprotic solvent in the presence of alkali carbonate under the pressure of 0.15-1.0 MPa in an inert atmosphere to obtain the polyether-ether-ketone, wherein the first polymeric monomer is hydroquinone, biphenol, 4, 4'-dihydroxybenzophenone, 2, 2-bis (4-hydroxyphenyl) propane, 1, 3-bis (p-hydroxybenzoyl) benzene, 1, 4-bis (p-hydroxybenzoyl) benzene, alpha-naphthol, beta-naphthol and the like; the first polymeric monomer is 4, 4'-difluorobenzophenone, the second polymeric monomer is 4, 4'-difluorobenzophenone, 2, 4'-difluorobenzophenone, 4-fluoro-4'-chloro-benzophenone, 2-fluoro-4'-chloro-benzophenone, 2-chloro-4'-fluoro-benzophenone, diphenyl ether, 4, 4'-diphenoxy benzophenone and the like. The reaction time can be shortened, the reaction temperature can be reduced, and energy and cost can be reduced; the impact strength of the polymer is improved, and the color is brighter and whiter.

Description

technical field [0001] The invention relates to a polyaryletherketone and a preparation method thereof, belonging to the technical field of engineering plastics. Background technique [0002] Since the 1960s, the development of high-performance engineering plastics has fully met the requirements of advanced fields such as electronics, electrical engineering, and aviation and military industries, and has developed very rapidly. Polyaryletherketone (PAEK) is a fully aromatic semi- Crystalline polymer has excellent heat resistance, radiation resistance, insulation and aging resistance, etc. Its excellent physical and mechanical properties, thermal properties, electrical properties and chemical properties make it widely used in electronic appliances, mechanical instruments, transportation It is widely used in fields such as transportation and aerospace. Among them, polyether ether ketone (PEEK) is a typical representative of polyarylether ketone materials. It was initially appl...

Claims

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Application Information

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IPC IPC(8): C08G65/40C08G65/46
CPCC08G65/4012C08G65/46C08G65/4093C08G2650/40
Inventor 谢怀杰董波
Owner JILIN ZHONGYAN HIGH PERFORMANCE PLASTIC
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