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A high thermal conductivity spherical sulfonated polyetheretherketone/graphite core-shell structure filler and its preparation method

A technology of sulfonated polyether ether ketone and core-shell structure, which is applied in the direction of microsphere preparation, chemical instruments and methods, heat exchange materials, etc., and can solve problems such as cumbersome operation, difficulty in realizing industrialization and industrialization, and high cost

Active Publication Date: 2021-04-20
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods are not only cumbersome and expensive to operate, but also cause serious environmental pollution, making it difficult to realize industrialization and industrialization.

Method used

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  • A high thermal conductivity spherical sulfonated polyetheretherketone/graphite core-shell structure filler and its preparation method
  • A high thermal conductivity spherical sulfonated polyetheretherketone/graphite core-shell structure filler and its preparation method
  • A high thermal conductivity spherical sulfonated polyetheretherketone/graphite core-shell structure filler and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Preparation of sulfonated polyether ether ketone

[0030] Dissolve 4,4'-difluorobenzophenone into 98wt.% concentrated sulfuric acid, and the mass ratio of 4,4'-difluorobenzophenone to concentrated sulfuric acid is 1:10. The reaction system was kept stirring at 100° C. for 10 h. The reaction was cooled to room temperature, and the reaction solution was poured into a large amount of ice water to cool. Then NaCl was added to the reaction solution until precipitation occurred, the product was filtered, washed repeatedly with deionized water until neutral, and dried to obtain 4,4'-difluoro-3,3'-disulfonic acid benzophenone.

[0031]Add 4,4'-difluorobenzophenone, 4,4'-difluoro-3,3'-disulfonic acid benzophenone, Hydroquinone and potassium carbonate, the specific molar ratio is n(4,4'-difluorobenzophenone):n(4,4'-difluoro-3,3'-disulfonic acid benzphenone Ketone):n(hydroquinone):n(potassium carbonate)=0.8:0.2:1:1, wherein n(hydroquinone) is 0.3mol. Then 500 mL of dimethy...

Embodiment 2

[0041] (1) Preparation of sulfonated polyether ether ketone

[0042] Dissolve 4,4'-difluoro-3-methylbenzophenone in concentrated sulfuric acid, the mass ratio of 4,4'-difluoro-3-methylbenzophenone to 98wt.% concentrated sulfuric acid is 1 :8. The reaction system was kept stirring at 100°C for 8h. The reaction was cooled to room temperature, and the reaction solution was poured into a large amount of ice water to cool. Then NaCl was added to the reaction liquid until the precipitate was precipitated, the product was filtered, washed repeatedly with deionized water until neutral, and dried to obtain 4,4'-difluoro-3-methyl-3'-sulfonic acid benzphenyl ketone.

[0043] Add 4,4'-difluoro-3-methylbenzophenone and 4,4'-difluoro-3-methyl-3'-sulfonic Acid-based benzophenone, hydroquinone and potassium carbonate, the specific molar ratio is n(4,4'-difluoro-3-methylbenzophenone):n(4,4'-difluoro- 3-methyl-3'-sulfonic acid benzophenone): n (hydroquinone): n (potassium carbonate) = 0.7:...

Embodiment 3

[0052] (1) Preparation of sulfonated polyether ether ketone

[0053] Dissolve 4,4'-difluoro-3-ethylbenzophenone in concentrated sulfuric acid, the mass ratio of 4,4'-difluoro-3-ethylbenzophenone to 98wt.% concentrated sulfuric acid is 1 :10. The reaction system was kept stirring at 100° C. for 10 h. The reaction was cooled to room temperature, and the reaction solution was poured into a large amount of ice water to cool. Then NaCl was added to the reaction solution until the precipitate was precipitated, the product was filtered, washed repeatedly with deionized water until neutral, and dried to obtain 4,4'-difluoro-3-ethyl-3'-sulfonic acid benzphenyl ketone.

[0054] Add 4'-difluoro-3-ethylbenzophenone and 4,4'-difluoro-3-ethyl-3'-sulfonic acid to a 1000mL three-necked flask equipped with a water dispenser and nitrogen tube benzophenone, hydroquinone and potassium carbonate, the specific molar ratio is n(4'-difluoro-3-ethylbenzophenone):n(4,4'-difluoro-3-ethyl Base-3'-su...

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Abstract

The invention discloses a high thermal conductivity spherical sulfonated polyether ether ketone / graphite core-shell structure filler and a preparation method thereof, belonging to the technical field of preparation of high-performance powder materials. First, sulfonated polyether ether ketone is prepared by mixing fluoroketone, sulfonated fluoroketone and hydroquinone, followed by nucleophilic substitution reaction. After softening, it is dried to remove 40-60% of the volume of water, and then the sulfonated polyetheretherketone is cut using a spherical mold. Polyether ether ketone, to obtain spherical sulfonated polyether ether ketone particles with different particle sizes; finally, the spherical sulfonated polyether ether ketone and micron graphite are electrostatically adsorbed to prepare sulfonated polyether ether ketone as the core , High thermal conductivity spherical sulfonated polyether ether ketone / graphite core-shell structure filler with micron graphite as the shell. The physical and chemical properties of the filler obtained by the invention are stable, and the core and the shell are firmly combined. The experimental results show that the outer surface of the filler is completely covered with a layer of graphite, forming a core-shell structure. Due to the high thermal conductivity of the graphite layer, the heat does not cross the filler, but is transferred forward by the heat-conducting shell.

Description

technical field [0001] The invention belongs to the technical field of preparation of high-performance powder materials, and in particular relates to a high thermal conductivity spherical sulfonated polyether ether ketone / graphite core-shell structure filler and a preparation method thereof. Background technique [0002] In today's world, with the rapid development of industrial production and technological level, new requirements are put forward for materials in various fields. Traditional materials can no longer meet the applications in some high-end fields, so a series of specific materials have emerged as the times require. Composite materials are widely used in the preparation of specific materials due to their light weight, easy processing, low pollution, and corrosion resistance. They are also endowed with new special properties, such as: high thermal conductivity, high electrical conductivity, and strong electromagnetic shielding. For composite materials, it is very...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/14C08G8/02C08L61/16C08K3/04B01J13/02
CPCB01J13/02C08G8/02C08K3/04C08L61/16C09K5/14
Inventor 牟建新赵轩李澍王振洋温丰宇
Owner JILIN UNIV
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