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A polyether ether ketone/graphite nanocomposite material, its preparation method and application

A nanocomposite material, polyether ether ketone technology, applied in prosthesis, medical science, etc., can solve the problem of poor wear resistance of artificial joint prosthesis, reduce adverse biological reactions and aseptic loosening, and improve wear resistance , Improve the effect of mechanical properties

Active Publication Date: 2020-07-31
BEIJING AKEC MEDICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The main purpose of the present invention is to provide a polyetheretherketone / graphite nanocomposite material, its preparation method and its application, so as to solve the problem of poor wear resistance of polyether ether ketone artificial joint prosthesis in the prior art

Method used

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  • A polyether ether ketone/graphite nanocomposite material, its preparation method and application
  • A polyether ether ketone/graphite nanocomposite material, its preparation method and application
  • A polyether ether ketone/graphite nanocomposite material, its preparation method and application

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preparation example Construction

[0028] In another typical embodiment of the present application, a preparation method of polyetheretherketone / graphite nanocomposite is provided, the preparation method includes: step S1, preparing nano-graphite microsheet solution with expanded graphite as graphite raw material, The thickness of the nanographite microflakes is 1-100nm; step S2, mixing the nanographite microflake solution with hydroquinone and removing the liquid substance in the nanographite microflake solution to obtain the pre-intercalation raw material; step S3, under the condition of emulsification and stirring Next, mix the pre-intercalation raw material with 4,4'-difluorobenzophenone and a solvent to form a first reaction system; step S4, raise the temperature of the first reaction system to 150-180°C and then add alkali to the reaction system Metal carbonate forms a second reaction system; and step S5, making the second reaction system react between 200-325° C. to obtain polyetheretherketone / graphite na...

Embodiment 1

[0039] Preparation of expanded graphite: Add natural flake graphite into the mixture of concentrated sulfuric acid and concentrated nitric acid (volume ratio 4:1), stir at room temperature for 20 hours, wash repeatedly with distilled water until neutral, dry for more than 24 hours to remove water, and prepare the above-mentioned The graphite oxide intercalation compound is treated at high temperature (about 1000°C) for 15s to obtain expanded graphite.

[0040] 12 g of the expanded graphite prepared above was put into an alcohol solution with an ethanol content of 70%, and ultrasonically treated for 6 hours to obtain a nano-graphite microsheet solution. The thickness of the nano-graphite microflakes is detected by SEM to be between 20-80nm.

[0041] Mix 110g of hydroquinone with the above-mentioned nanographite microflake solution, and ultrasonically mix for 8 hours under nitrogen protection to obtain a hydroquinone / nanographite microflake pre-intercalation solution, and then d...

Embodiment 2

[0045] The difference with Example 1 is that the expanded graphite prepared by 12g of Example 1 is put into an alcohol solution with an ethanol content of 70%, and ultrasonically treated for 4h to obtain a nano-graphite microplate solution, and the thickness of the nano-graphite microplate is detected by SEM as Between 60-100nm.

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Abstract

The invention provides a polyether-ether-ketone / graphite nanometer composite material as well as a preparation method and application thereof. The composite material comprises a polyether-ether-ketonebody and graphite nanosheets dispersed in the polyether-ether-ketone body, wherein the content of the graphite nanosheets in the composite material is 0.1 to 2 weight percent, the thickness of each graphite nanosheet is 1 to 100nm, and each graphite nanosheet is of a sheet-stripping structure of expanded graphite. According to the polyether-ether-ketone / graphite nanometer composite material prepared by compounding the graphite nanosheets and polyether-ether-ketone, not only can a mechanical property of the polyether-ether-ketone material be improved, but also a friction coefficient can be reduced greatly. When being applied into an artificial arthroplasty, the polyether-ether-ketone / graphite nanometer composite material is used as a part of a friction auxiliary material or a complete friction auxiliary material, so that an anti-wear performance of an artificial joint surface can be remarkably improved. Meanwhile, the thicknesses and the content of the graphite nanosheets are controlled within the range, so that the graphite nanosheets can be uniformly dispersed in the polyether-ether-ketone favorably, and the wear resistance of the composite material is further improved.

Description

technical field [0001] The invention relates to the field of artificial joint prosthesis materials, in particular to a polyetheretherketone / graphite nanocomposite material, its preparation method and its application. Background technique [0002] Since the success of artificial joint replacement in the 1960s, the application of artificial joints has been widely popularized, especially the artificial hip and knee joints have solved motion problems for countless patients. At present, artificial joint replacement has been considered as an effective treatment for end-stage joint diseases. It can not only relieve pain, improve joint mobility and restore joint function, but more importantly, improve the quality of life of patients. [0003] Although the design and manufacture of artificial joints and the level of clinical replacement surgery have been greatly improved, cases of failure in use still continue to occur. The main forms of failure of artificial joints are infection, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G8/02C08K3/04A61L27/44
Inventor 马骏
Owner BEIJING AKEC MEDICAL
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