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Terminated poly(ether-ether-ketone), and preparation method thereof

A technology of polyetheretherketone and p-hydroxyanisole, which is applied in the field of capped polyetheretherketone and its preparation, and can solve problems affecting product quality, PEEK molecular weight and uneven distribution, etc.

Active Publication Date: 2013-03-06
吴疆
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the reaction cannot be controlled after reaching the end point, the reaction will continue during the cooling period after the end of the reaction, resulting in the uneven molecular weight and distribution of the produced PEEK, which will eventually affect the quality of the product

Method used

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  • Terminated poly(ether-ether-ketone), and preparation method thereof
  • Terminated poly(ether-ether-ketone), and preparation method thereof
  • Terminated poly(ether-ether-ketone), and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] 65.45g (0.3mol) of 4,4'-difluorobenzophenone, 33.03g (0.3mol) of hydroquinone, 174.58g (0.8mol) of diphenylsulfone, 48.5ml (0.4mol) of xylene, without Add 47.7g (0.45mol) of sodium carbonate water and 4.2g (0.03mol) of anhydrous potassium carbonate into a 1000ml three-neck flask equipped with an electric speed-adjustable stirring device and a condensing reflux device, and continue to feed nitrogen protection. Heat the three-necked bottle, and start stirring after all the materials are melted. The temperature was raised to 145° C., stirred and refluxed for 2 hours. Then remove the condensing reflux device, continue to heat up, and distill out xylene at the same time. When the temperature rises to 180°C, it is maintained for half an hour to completely evaporate the xylene. Then the temperature was raised to 280° C. and reacted for 2 hours. 10 g (0.045 mol) of 2,5-di-tert-butylhydroquinone was added, and the reaction was continued for half an hour. The reaction solutio...

Embodiment 2

[0065] With hydroquinone 33.03g (0.3mol), diphenylsulfone 174.58g (0.8mol), xylene 48.5ml (0.4mol), anhydrous sodium carbonate 47.7g (0.45mol), anhydrous potassium carbonate 4.2g (0.03 mol) into a 1000ml three-neck flask equipped with an electric speed-regulating stirring device and a condensing reflux device, and continuously feed nitrogen protection. Heat the three-necked bottle, and start stirring after all the materials are melted. The temperature was raised to 145° C., stirred and refluxed for 2 hours. Then remove the condensing reflux device, continue to heat up, and distill out xylene at the same time. When the temperature rises to 180°C, it is maintained for half an hour to completely evaporate the xylene. Then 65.45 g (0.3 mol) of 4,4'-difluorobenzophenone was added, the temperature was raised to 280°C, and the reaction was carried out for 2 hours. Then 2.22 g (0.01 mol) of 2,5-di-tert-butylhydroquinone was added, and the reaction was continued for half an hour. T...

Embodiment 3

[0068] 65.45g (0.3mol) of 4,4'-difluorobenzophenone, 74.48g (0.6mol) of p-hydroxyanisole, 174.58g (0.8mol) of diphenylsulfone, 48.5ml (0.4mol) of xylene, Add 47.7g (0.45mol) of anhydrous sodium carbonate and 4.2g (0.03mol) of anhydrous potassium carbonate into a 1000ml three-necked flask equipped with an electric speed-adjustable stirring device and a condensing reflux device, and continue to pass nitrogen protection. Heat the three-necked bottle, and start stirring after all the materials are melted. Raise the temperature to 145°C, stir and reflux for 2 hours, add 4g (0.03mol) of aluminum trichloride and 7.5g (0.03mol) of boron tribromide, and continue to reflux for two hours. Remove the condensing reflux device, and evaporate the xylene while heating up. When the temperature rises to 180°C, it is maintained for half an hour to completely evaporate the xylene. The temperature was raised to 230° C. and reacted for 5 hours. The reaction solution was poured into cold distille...

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Abstract

The invention relates to 2,5-di-tert-butyl-terminated poly(ether-ether-ketone) (PEEK), and a preparation method thereof. The end-capped poly(ether-ether-ketone) provided by the invention has advantages of easily controllable molecular weight, high heat resistance, good chemical stability, radiation resistance, good toughness, and the like.

Description

technical field [0001] The invention belongs to the field of polymer materials and their synthesis, and in particular relates to end-capped polyetheretherketone and a preparation method thereof. Background technique [0002] Polyether ether ketone (PEEK) is a molecular backbone containing [0003] [0004] A linear aromatic polymer compound of repeating units. It was first successfully developed by the British ICI company in the late 1970s and put into industrial production in 1987. [0005] The macromolecular main chain of PEEK contains a large number of aromatic rings and polar ketone groups, which endow the polymer with heat resistance and mechanical strength. In addition, the molecule contains a large number of ether bonds, which endows the polymer with toughness. [0006] PEEK has the following performance characteristics: melting point is 334°C, glass transition temperature is 143°C, heat distortion temperature HDT (182MPa) is 160°C; tensile strength is 94MPa, co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G8/02
Inventor 马长利
Owner 吴疆
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