Preparation method of carbon nanotube reinforced hydroxyapatite composite material

A nano-hydroxyapatite and hydroxyapatite technology, applied in the field of composite materials, can solve the problems of difficult to disperse, difficult to form composite materials, biocompatibility, low bonding strength of wetted interfaces, etc., to avoid splitting, improve Wetting and interfacial bonding, the effect of improving biocompatibility

Inactive Publication Date: 2013-03-20
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is: to provide a preparation method of carbon nanotube reinforced hydroxyapatite composite material, which is to synthesize carbon nanotubes in hydroxyapatite powder, and use hydroxyapatite to modify the surface of carbon nanotubes , and then prepare the carbon nanotube-reinforced hydroxyapatite composite material method, which overcomes the difficulty in dispersing the carbon nanotubes in the hydroxyapatite matrix in the prior art, the poor wettability between the carbon nanotubes and the hydroxyapatite matrix, and the interface The disadvantages of low bonding strength, difficulty in forming hydroxyapatite powder with carbon nanotubes on the surface, and poor biocompatibility of composite materials

Method used

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  • Preparation method of carbon nanotube reinforced hydroxyapatite composite material
  • Preparation method of carbon nanotube reinforced hydroxyapatite composite material
  • Preparation method of carbon nanotube reinforced hydroxyapatite composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0029] The first step is to prepare carbon nanotube-hydroxyapatite powder

[0030] According to the molar ratio of nickel carbonate: hydroxyapatite = 0.04:1 ratio, weigh the required amount of nickel carbonate and 10nm hydroxyapatite powder, mix, and then use a high-speed disperser to disperse 0.5 at a speed of 500r / min. h, use a planetary ball mill to mill at a speed of 800r / min for 1h, place the above-mentioned dispersed and ball-milled mixture in a quartz ark, and place the quartz ark in a constant temperature zone of a horizontal tube furnace at a flow rate of 100ml / min Introduce argon gas into the tube furnace and raise the temperature to 400°C, keep it warm for 1h, then close the argon gas, feed hydrogen gas into the tube furnace at a flow rate of 100ml / min, raise the temperature to 600°C and keep it for 1h, then close For hydrogen, a mixed gas with a volume ratio of argon:ethane=10:1 is continuously fed into the horizontal tube furnace at a flow rate of 660ml / min, and t...

Embodiment 2

[0040] The first step is to prepare carbon nanotube-hydroxyapatite powder

[0041] According to the molar ratio of nickel carbonate: hydroxyapatite = 0.75:1, weigh the required amount of nickel carbonate and 50nm hydroxyapatite powder, mix, and then use a high-speed disperser to disperse 0.8 at a speed of 650r / min. h, use a planetary ball mill to mill at a speed of 900r / min for 1.5h, place the above-mentioned mixture after dispersion and ball milling in a quartz ark, place the quartz ark in a constant temperature zone of a horizontal tube furnace, and heat it at a temperature of 110ml / min. The flow rate is to feed argon into the tube furnace and raise the temperature to 450°C, keep it warm for 1.5h, then turn off the argon, feed hydrogen into the tube furnace at a flow rate of 110ml / min, raise the temperature to 900°C and keep it for 1.5h , then close the hydrogen, the volume ratio is argon: ethane = 12:1 mixed gas with a flow rate of 780ml / min continue to pass into the horizo...

Embodiment 3

[0047] The first step is to prepare carbon nanotube-hydroxyapatite powder

[0048] The molar ratio is the ratio of nickel carbonate: hydroxyapatite=1.50:1, weigh the required amount of nickel carbonate and 100nm hydroxyapatite powder, mix, and then use a high-speed disperser to disperse at a speed of 800r / min for 1h , use a planetary ball mill to mill for 2 hours at a speed of 1000r / min, place the above-mentioned dispersed and ball-milled mixture in a quartz ark, place the quartz ark in a constant temperature zone of a horizontal tube furnace, and flow to Introduce argon into the tube furnace and raise the temperature to 500°C, keep it warm for 2 hours, then turn off the argon, pass hydrogen into the tube furnace at a flow rate of 120ml / min, raise the temperature to 1200°C and keep it for 2 hours, then turn off the hydrogen , the volume ratio of argon: ethane=15:1 mixed gas is continuously passed into the horizontal tube furnace at a flow rate of 960ml / min, and the catalytic c...

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Abstract

The invention discloses a preparation method of a carbon nanotube reinforced hydroxyapatite composite material, relating to a composite material for prosthesis materials. According to the preparation method, a carbon nanotube is synthesized in hydroxyapatite powder, the carbon nanotube is subjected to surface modification by using hydroxyapatite, and the carbon nanotube reinforced hydroxyapatite composite material is further prepared. The preparation method comprises the following steps of: firstly preparing carbon nanotube-hydroxyapatite powder from nickel carbonate and the hydroxyapatite powder, then preparing hydroxyapatite-modified carbon nanotube-hydroxyapatite powder, and finally preparing the carbon nanotube reinforced hydroxyapatite composite material. The preparation method disclosed by the invention overcomes the defects that the carbon nanotube is difficult to disperse in a hydroxyapatite matrix, the wettability and the interfacial strength between the carbon nanotube and the hydroxyapatite matrix are low, the hydroxyapatite powder of which the surface is loaded with the carbon nanotube is difficult to form and the biocompatibility of the composite material is poorer in the prior art.

Description

technical field [0001] The technical proposal of the invention relates to a composite material used for prosthesis materials, in particular to a preparation method of a carbon nanotube reinforced hydroxyapatite composite material. Background technique [0002] Hydroxyapatite is an important inorganic mineral component in human and animal bones and teeth. It is very similar to the main component of inorganic substances that account for about 70% of human hard tissue. It is a non-toxic, non-carcinogenic and has good biocompatibility. Biomaterials that are non-toxic and bioactive are currently the best choice for human hard tissue transplantation, and have been widely used in the field of human hard tissue implant materials. However, there are still some problems to be solved in hydroxyapatite materials, mainly reflected in poor mechanical properties, high brittleness, bending strength only between 100-160MPa, and fracture toughness only between 0.5-1.0MPa m 1 / 2 Both are low, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/447
Inventor 李海鹏张娜王雪霞梁春永李宝娥王洪水
Owner HEBEI UNIV OF TECH
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