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Method for preparing medical three-dimensional gradient netlike carbon fiber/ hydroxyapatite (HA)/ medical stone composite material

A composite material and carbon fiber technology, which is applied in medical science, anodic oxidation, prosthesis, etc., can solve the problems of low strength and poor toughness, and achieve the effect of good density and strength, less defects, and improved bonding ability

Inactive Publication Date: 2012-08-22
LIAONING UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the above-mentioned existing problems, and provide a preparation method of a three-dimensional gradient mesh carbon fiber / HA / medicine stone medical composite material; this method can improve the strength and toughness of the HA matrix and solve the problem of HA The disadvantages of low strength and poor toughness of the material make it expected to be used under dynamic load working conditions

Method used

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  • Method for preparing medical three-dimensional gradient netlike carbon fiber/ hydroxyapatite (HA)/ medical stone composite material
  • Method for preparing medical three-dimensional gradient netlike carbon fiber/ hydroxyapatite (HA)/ medical stone composite material
  • Method for preparing medical three-dimensional gradient netlike carbon fiber/ hydroxyapatite (HA)/ medical stone composite material

Examples

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example 1

[0029] 1. Weave carbon fiber into a three-dimensional gradient network carbon fiber skeleton with a porosity of 70% at both ends and a porosity of 40% in the center;

[0030] 2. DC-pulse anodic oxidation and alkali treatment of three-dimensional gradient network carbon fiber skeleton; NH4 HCO 3 0.08mol / L, NH 4 h 2 PO 4 0.005mol / L, Ca(NO 3 ) 2 0.01mol / L configuration 3L electrolyte is poured into the electrolytic cell, the woven three-dimensional gradient network skeleton is immersed in the electrolyte as the anode, the graphite sheet is immersed in the electrolyte as the cathode, and a constant current is applied at both ends of the anode and cathode, DC The current density is 150mA / g, the pulse current density is 300mA / g, the main pulse width is 0.3s, the sub-pulse width is 0.1s, the pulse frequency is 1Hz, and the oxidation time is 1min. The sample after DC-pulse anodization was washed with deionized water, then soaked in 0.5mol / L NaOH solution at 80°C for 2 h, then ...

example 2

[0036] 1. The carbon fiber is woven into a three-dimensional gradient network porous skeleton, with a porosity of 65% at one end and 40% at the other end, and the pores present a continuous gradient decrease from the high-porosity end to the low-porosity end;

[0037] 2. Carry out DC-pulse anodizing, NH 4 HCO 3 0.08mol / L, NH 4 h 2 PO 4 0.005mol / L, Ca(NO 3 ) 2 0.01mol / L configuration 3L electrolyte is poured into the electrolytic cell, the woven three-dimensional gradient network skeleton is immersed in the electrolyte as the anode, the graphite sheet is immersed in the electrolyte as the cathode, and a constant current is applied at both ends of the anode and cathode, DC The current density is 50mA / g, the pulse current density is 100mA / g, the main pulse width is 0.3s, the sub-pulse width is 0.1s, the pulse frequency is 1Hz, and the oxidation time is 3min. The sample after DC-pulse anodization was washed with deionized water, then soaked in 0.5mol / L NaOH solution at 80...

example 3

[0043] 1. Weave carbon fiber into a three-dimensional gradient network carbon fiber skeleton with a porosity of 65% at both ends and a porosity of 50% in the center;

[0044] 2. Carry out DC-pulse anodizing, NH 4 HCO 3 0.08mol / L, NH 4 h 2 PO 4 0.005mol / L, Ca(NO 3 ) 2 0.01mol / L configuration 3L electrolyte is poured into the electrolytic cell, the woven three-dimensional gradient network skeleton is immersed in the electrolyte as the anode, the graphite sheet is immersed in the electrolyte as the cathode, and a constant current is applied at both ends of the anode and cathode, DC The current density is 100mA / g, the pulse current density is 200mA / g, the main pulse width is 0.3s, the sub-pulse width is 0.1s, the pulse frequency is 1Hz, and the oxidation time is 2min. The sample after DC-pulse anodization was washed with deionized water, then soaked in 0.5mol / L NaOH solution at 80°C for 2 h, then washed with deionized water and dried to obtain the modified three-dimension...

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Abstract

The invention discloses a method for preparing a medical three-dimensional gradient netlike carbon fiber / hydroxyapatite (HA) / medical stone composite material. The method comprises the following steps of: weaving carbon fibers into a three-dimensional gradient netlike carbon fiber skeleton; performing surface modification treatment on the three-dimensional gradient netlike carbon fiber skeleton;and making nano HA and nano medical stone composite ceramic slurry, compounding the composite ceramic slurry and the three-dimensional gradient netlike carbon fiber skeleton by adopting a centrifugalforming machine, sintering, and thus obtaining the composite material. The method has the advantages that the three-dimensional gradient netlike carbon fiber reinforcing effect is good, much HA can be compounded in a high-porosity area, and the composite material has good surface bioactivity; a low-porosity area has high carbon fiber content, so that the mechanical property of the HA matrix is improved; size completeness, few defects and high density of a blank of the composite material can be ensured by adopting the centrifugal grouting forming machine; and the nano medical stone added into the HA matrix contains a large quantity of trace elements which are beneficial to human body, and is used as a reinforcing phase for improving the strength of the HA matrix.

Description

technical field [0001] The invention relates to a preparation method of a three-dimensional gradient mesh carbon fiber / HA / medicine stone medical composite material. Background technique [0002] Biomedical materials refer to new high-tech materials used to diagnose, treat, repair or replace diseased tissues and organs or enhance their functions; biomedical materials not only have high technical content and economic value, but also have a Life and health are closely related. Due to the aging society, the demand for artificial teeth, artificial bones, and artificial tooth roots is increasing. The rapid development of the automobile industry, accidents such as car accidents often lead to fractures and bone defects. The increase of artificial bone also increases the application of artificial bone. [0003] Biomedical materials can be roughly divided into three categories: medical organic polymer materials, medical metals and their alloys, and medical inorganic non-metallic mate...

Claims

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Application Information

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IPC IPC(8): A61L27/42C25D11/02
Inventor 李强于景媛穆柏春石萍齐国超单凤君唐立丹
Owner LIAONING UNIVERSITY OF TECHNOLOGY
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