A method for the fragmentation and purification of polyether ether ketone and polyether ether ketone material

By controlling the process and regulating the morphology, and combining mechanical crushing and heating impregnation methods, the high cost and low efficiency problems of polyether ether ketone purification have been solved, and the preparation of low-particle-size ultrafine powder has been achieved, meeting the requirements of medical implant materials and breaking the monopoly of imported materials.

CN116715843BActive Publication Date: 2026-05-29JILIN UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JILIN UNIVERSITY
Filing Date
2023-06-01
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing polyether ether ketone (PEEK) purification processes suffer from high costs and low efficiency. In particular, when preparing medical implant materials, it is difficult to effectively remove diphenyl sulfone solvent and metal ions, and the pulverization size is difficult to achieve below 100 mesh.

Method used

By controlling the morphology of polyetheretherketone (PEEK) to form a microsphere structure, and combining traditional mechanical crushing and simple heating impregnation methods, low-particle-size ultrafine powder can be prepared, reducing diphenyl sulfone residue and metal ion content.

Benefits of technology

It achieves low-cost and high-efficiency purification of polyether ether ketone, with particle size adjustable in the range of 8-100 micrometers, meeting the standards for medical implant materials, reducing production costs and improving the mechanical properties and purity of the material.

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Abstract

This invention discloses a method for crushing and purifying polyetheretherketone (PEEK), PEEK materials, and their applications. Belonging to the field of polymer composite materials technology, the method employs a process control approach using the polymerization mother liquor to regulate the polymer morphology in the polymerization solution, causing PEEK to precipitate in the form of spherical particles with a microspherical structure. Simple crushing yields low-particle-size ultrafine PEEK powder, with a particle size adjustable within the range of 8-100 micrometers and a high spheroidization rate. Simultaneously, the crushed low-particle-size ultrafine PEEK powder facilitates the purification of PEEK. Washing with organic solvents such as ethanol and acetone, and distilled water, PEEK powder can be obtained with high efficiency and cost-effectiveness. Due to the small particle size of PEEK, it is easy to purify. After simple purification, the cytotoxicity and hemolysis rate meet the standards for implantable medical-grade PEEK materials for human implantation, reducing the raw material costs of medical product manufacturing and enabling the general public to use more affordable and high-quality medical products.
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