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Surface bioactive calcium-phosphate layer of carbon fiber reinforced polyetheretherketone composite material and preparation thereof

A technology of bioactive calcium and polyetheretherketone, applied in coatings, medical science, prostheses, etc., can solve problems such as high application value, and achieve the effects of improving biological level, good therapeutic effect, and good surface biological activity

Inactive Publication Date: 2012-10-10
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few reports at home and abroad on the surface bioactive modification of three-dimensional braided carbon fiber reinforced polyetheretherketone composites.
Although its research is quite difficult, it has great application value

Method used

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  • Surface bioactive calcium-phosphate layer of carbon fiber reinforced polyetheretherketone composite material and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0025] The preparation method of the three-dimensional braided carbon fiber reinforced polyether ether ketone composite material is as follows: first perform three-dimensional and four-directional weaving of carbon fiber and polyether ether ketone fiber, and then heat the fiber fabric to 140-180°C, continue to vacuum, and heat for 1.5 hours, then Raise the temperature to 380°C at a rate of 20°C / min and keep the temperature for 30 minutes. Press 0.5MPa again, remove the vacuum, continue to maintain the temperature for 30 minutes, and finally lower the temperature slowly, and release the mold when the temperature is lower than the glass transition temperature of polyetheretherketone by 30°C. The selected carbon fiber is PAN-based carbon fiber with a tensile strength of 2800MPa, a tensile modulus of 200GPa, and a density of 1.75g / cm 3 , With a diameter of 6-8μm, produced by Jilin Carbon Factory.

[0026] The three-dimensional braided carbon fiber reinforced polyether ether ketone co...

example 2

[0028] The three-dimensional woven carbon fiber reinforced polyether ether ketone composite material with a fiber volume content of 54% (the preparation method is the same as in Example 1) was ultrasonically cleaned with acetone, absolute ethanol, and deionized water at room temperature for 10 minutes, and then dried. Place it in an atmospheric reactor, adjust the frequency to about 8kHz, output voltage about 8kV, current about 40mA, and discharge time of 120s. Then at 37.5℃, the composite material was placed in 1.5 times SBF simulated body fluid for biomimetic mineralization. The standard simulated body fluid ion solubility is [Na + ]: 142.0mM, [K + ]: 5.0mM, [Mg 2+ ]: 2mM, [Ca 2+ ]: 2.5mM, [Cl - ]: 147.8mM, [HCO 3 - ]: 4.2mM, [HPO 4 2- ]: 1.0mM, [SO 4 2- ]: 0.4mM, and trihydroxyaminomethyl methane (CH 2 OH) 3 CNH 2 And HCl solution is a slow release agent to adjust the pH of the solution to 7.4. Take it out after 28 days of biomimetic mineralization. The simulated body fluid...

example 3

[0030] The three-dimensional woven carbon fiber reinforced polyether ether ketone composite material with a fiber volume content of 36% (the preparation method is the same as in Example 1) was ultrasonically cleaned with acetone, absolute ethanol, and deionized water at room temperature for 10 minutes, and then dried. It is placed in the MEVVA source ion implanter, with a 99% purity Ti rod as the working electrode, which is implanted facing the Ti ion source. The injected beam current density is 0.4~0.5mA·cm -2 , The arc voltage is 70V, the trigger pressure is 80V, and the air pressure in the target chamber is about 8×10 -4 Pa, the injection dose is 5.0×10 15 . Then at 37.5℃, the composite material was placed in 1.5 times SBF simulated body fluid for biomimetic mineralization for 7 days. The standard simulated body fluid ion solubility is [Na + ]: 142.0mM, [K + ]: 5.0mM, [Mg 2+ ]: 2mM, [Ca 2+ ]: 2.5mM, [Cl - ]: 147.8mM, [HCO 3 - ]: 4.2mM, [HPO 4 2- ]: 1.0mM, [SO 4 2- ]: 0.4mM, ...

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Abstract

The invention relates to a surface bioactive calcium-phosphate layer of a carbon fiber reinforced polyetheretherketone composite material and preparation thereof. The three-dimensional braided carbon fiber reinforced polyetheretherketone composite material which is molded through hot-press is ground, polished and subjected to alkaline liquor treatment, complex activating treatment, plasma treatment or ion implantation pretreatment to ensure that the surface of the composite material has activity; and the sample subjected to the pretreatment is immerged in a simulated body fluid for biomimeticmineralization. The depth of the calcium-phosphate layer is 4 to 10 microns and the atomic ratio of the calcium to the phosphate of the calcium-phosphate layer is 1:1-1.5. The surface bioactive calcium-phosphate layer of a carbon fiber reinforced polyetheretherketone composite material and the preparation thereof have the following advantages that: the process is simple; and through the treatmentby the method, the composite material has excellent mechanical properties (high shocking and bending strength and modulus near bones), and also has good surface bioactivity so that the composite material as a new bone implant has better therapeutic effect.

Description

Technical field [0001] The invention relates to a biologically active modification technology for the surface of a carbon fiber reinforced polyether ether ketone composite material, in particular to a three-dimensional woven carbon fiber reinforced polyether ether ketone composite material surface biologically active calcium and phosphorus layer and its preparation. Background technique [0002] The use of biomedical products for hard tissues is huge, and with the aging of the population, the market demand will increase year by year. With the improvement of living standards, higher performance requirements are put forward for bone implant materials. Many defects in metal implant materials have prompted people to seek a new generation of bone implant materials. To this end, foreign countries have taken the lead in launching composite products. The excellent properties of three-dimensional braided fiber composites make it the most promising new generation of bone implant materials...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61L27/40A61L27/32
Inventor 何芳万怡灶黄远王玉林李皓苗影
Owner TIANJIN UNIV
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