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Polyether-ether-ketone composite material containing fluorine phosphorus lime, preparation method and usage thereof

A fluoroapatite and polyetheretherketone technology, which is used in medical science, prosthesis, etc., can solve problems such as poor biocompatibility, loosening of bone substitute materials, and loosening of bone repair materials, and achieve biological fixation. , the effect of reducing stress shielding and reducing shear stress

Inactive Publication Date: 2010-12-01
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the poor biocompatibility of existing metal and bioceramic bone repair and replacement materials, which are prone to stress shielding, causing bone resorption, bone atrophy, and even loosening of bone replacement materials. The polymer implant material lacks the defect of biological activity and cannot be integrated with bone, thus providing a polyetheretherketone composite material containing fluoroapatite, its preparation method and application, and an artificial bone comprising the composite material
The polyetheretherketone composite material containing fluoroapatite has good bioactivity and biocompatibility, has good mechanical compatibility with bone tissue, and can solve the stress shielding caused by the mismatch of elastic modulus, etc. A series of problems such as loosening of bone repair materials and bone resorption, etc.; and the required toughness, elastic modulus, fracture strength and fracture toughness can be achieved by adjusting the proportion of the composite material to meet the requirements of biomedical materials for different purposes and uses. need

Method used

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  • Polyether-ether-ketone composite material containing fluorine phosphorus lime, preparation method and usage thereof
  • Polyether-ether-ketone composite material containing fluorine phosphorus lime, preparation method and usage thereof
  • Polyether-ether-ketone composite material containing fluorine phosphorus lime, preparation method and usage thereof

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Embodiment 1

[0035] Weigh 1kg (10%) nanometer fluoroapatite (average particle size is 70nm) and 9kg (90%) polyether ether ketone powder, pre-mix in a high-speed mixer, and then use a twin-screw extruder at 380 ~ Mixing, extrusion, and granulation at 400°C to obtain pellets. Use an injection molding machine to inject the pellets into required samples at 380-400°C. The mechanical properties of the samples are shown in Table 1, and the transmission electron microscope (TEM) photos of the nano-fluoroapatite used are shown in figure 1 , the average particle length is 70nm, and the average diameter is 40nm.

Embodiment 2

[0037]Weigh 4kg (40%) nanometer fluoroapatite (average particle size is 70nm) and 6kg (60%) polyether ether ketone powder, pre-mix in a high-speed mixer, and then use a twin-screw extruder at 380 ~ Mixing, extrusion, and granulation at 400°C to obtain pellets. Use an injection molding machine to inject the pellets into the required samples at 380-400 °C (see figure 2 ). The mechanical properties of the samples are listed in Table 1. The SEM photograph of the composite material is shown in image 3 .

Embodiment 3

[0039] Weigh 1kg (10%) fluorapatite (average particle size 10μm) and 9kg (90%) polyether ether ketone powder, pre-mix in a high-speed mixer, and then use a twin-screw extruder at 380-400 ℃ kneading, extrusion and granulation to obtain pellets. Use an injection molding machine to inject the pellets into required samples at 380-400°C. The mechanical properties of the samples are listed in Table 1.

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Abstract

The present invention provides a polyether-ether-ketone composite material with fluorine phosphorus lime, a preparation method and usage thereof. The preparation method of the composite material comprises the following steps of: melting and blending the raw material fluorine phosphorus lime and the polyether ether ketone, and then cooling, wherein the dosage of the fluorine phosphorus lime takes 10-50wt% of the total weight of the raw material, and the dosage of the polyether ether ketone takes 50-90% of the total weight of the raw material. The composite material is featured by good mechanical compatibility, reducing stress resistance, greatly increasing binding force between interfaces, reducing shearing stress, reducing tender movement and vertical displacement, and guaranteeing initial fixing of the composite material. Besides, the composite material has the advantages of good biological compatibility and biological activity, capable of promoting bone tissue growth, realizing biological fixing and being used as substitute of metal or ceramic bone substitute material.

Description

technical field [0001] The invention relates to a polyether ether ketone composite material containing fluorapatite, a preparation method and application thereof. Background technique [0002] Polyetheretherketone (PEEK) has good biological stability, and has more significant advantages than medical metal alloys and ceramic materials, and is very suitable for long-term implantation as a medical implant device. PEEK not only has the characteristics of hard wear resistance, high rigidity, creep resistance, high impact strength and excellent bending elongation, but also has low friction coefficient, outstanding fatigue resistance, and corrosion resistance to many chemical substances and solvents. One of the most important applications of PEEK is to replace metal materials to make artificial bones. In addition to the advantages of light weight, non-toxicity, and strong corrosion resistance, artificial bones made of PEEK also have the closest elastic modulus to human bone tissue....

Claims

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Application Information

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IPC IPC(8): C08L61/16C08K3/32B29C47/92B29C45/78B29C43/58A61L27/18A61L27/12B29C48/92
Inventor 魏杰马健刘昌胜魏世成鲁敬雄
Owner EAST CHINA UNIV OF SCI & TECH
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