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A method for preparing a multi-layered pore structure containing calcium and phosphorus on the surface of titanium

A multi-level, porous structure technology, applied in the field of biomaterials, can solve the problems of interface binding limitations, etc., to achieve the effect of promoting adhesion, increasing force, and improving interface binding state

Inactive Publication Date: 2017-03-22
TIANJIN UNIV OF COMMERCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This nanotube structure is also perpendicular to the surface of the titanium matrix, and the diameter of the tube is also limited to the nanoscale range, and the interface with the surrounding bone tissue is limited to a certain extent.

Method used

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  • A method for preparing a multi-layered pore structure containing calcium and phosphorus on the surface of titanium
  • A method for preparing a multi-layered pore structure containing calcium and phosphorus on the surface of titanium
  • A method for preparing a multi-layered pore structure containing calcium and phosphorus on the surface of titanium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Weigh 0.05mol of NaH 2 PO 4 2H 2 O powder, dissolved in 500ml of deionized water, stirred evenly by magnetic force to obtain NaH with a concentration of 0.1M 2 PO 4 2H 2 O Electrolyte. Weigh again 0.1mol of (CH 3 COO) 2 Ca·H 2 The O powder was dissolved in 500ml of ionized water, and evenly stirred by magnetic force to obtain (CH 3 COO) 2 Ca·H 2 O Electrolyte.

[0030] (2) The medical pure titanium sheet (model: TA2, size: 10mm×10mm×1mm) is polished by sandpaper, then ultrasonically cleaned with ethanol and deionized water, and then placed as an anode in 0.1M NaH 2 PO 4 2H 2 In the O electrolyte, the platinum electrode (its size is 30mm×30mm×1mm) is used as the cathode at this time, and the distance between the cathode and the anode is 30mm. The micro-arc oxidation treatment is carried out by a DC pulse power supply device, and its process parameters are voltage 300V, oxidation time 0.5h, frequency 100Hz, duty cycle 50%, and temperature 25°C. After th...

Embodiment 2

[0036] (1) Weigh 0.1mol of NaH 2 PO 4 2H 2 O powder, dissolved in 500ml of deionized water, stirred evenly by magnetic force to obtain NaH with a concentration of 0.2M 2 PO 4 2H 2 O Electrolyte. Weigh again 0.15mol of (CH 3 COO) 2 Ca·H 2 O powder was dissolved in 500ml of ionized water, and the concentration of (CH 3 COO) 2 Ca·H 2 O Electrolyte.

[0037] (2) The medical pure titanium sheet (model: TA2, size: 10mm×10mm×1mm) is polished by sandpaper, then ultrasonically cleaned with ethanol and deionized water, and then placed as an anode in 0.2M NaH 2 PO 4 2H 2 In the O electrolyte, the platinum electrode (its size is 30mm×30mm×1mm) is used as the cathode at this time, and the distance between the cathode and the anode is 30mm. The micro-arc oxidation treatment is carried out by a DC pulse power supply device, and its process parameters are voltage 270V, oxidation time 0.5h, frequency 100Hz, duty cycle 50%, and temperature 30°C. After the treatment, the titanium ...

Embodiment 3

[0040] (1) Weigh 0.075mol of NaH 2 PO 4 2H 2 O powder, dissolved in 500ml of deionized water, stirred evenly by magnetic force to obtain NaH with a concentration of 0.15M 2 PO 4 2H 2 O Electrolyte. Weigh again 0.1mol of (CH 3 COO) 2 Ca·H 2 The O powder was dissolved in 500ml of ionized water, and evenly stirred by magnetic force to obtain (CH 3 COO) 2 Ca·H 2 O Electrolyte.

[0041] (2) The medical pure titanium sheet (model: TA2, size 10mm×10mm×1mm) is polished by sandpaper, then cleaned with ethanol and deionized water ultrasonically, and then placed as an anode in 0.15M NaH 2 PO 4 2H 2 In the O electrolyte, the platinum electrode (its size is 30mm×30mm×1mm) is used as the cathode at this time, and the distance between the cathode and the anode is 30mm. The micro-arc oxidation treatment is carried out by a DC pulse power supply device, and its process parameters are voltage 280V, oxidation time 1h, frequency 100Hz, duty cycle 50%, and temperature 20°C. After th...

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Abstract

The invention discloses a method for preparing a multilevel-hole structure with a titanium surface containing calcium and phosphorus. By means of the method, the purpose of conducting modification on the structure and ingredients of a titanium substrate at the same time is achieved, and a titanium implant body material with good comprehensive performance is obtained. A polished, cleaned and dried medical pure titanium sheet serves as the anode to be placed in a NaH2PO4.2H2O electrolyte, and a platinum electrode serves as the cathode to conduct micro-arc oxidation processing; after processing is conducted, the titanium sheet is taken out of the NaH2PO4.2H2O electrolyte and then serves as the anode to be placed into a (CH3COO)2Ca.H2O electrolyte, the platinum electrode serves as the cathode, and the micro-arc oxidation processing is conducted again; the multilevel-hole structure containing the calcium and the phosphorus is obtained on the titanium surface. According to the method, the multilevel-hole structure with holes of different sizes is prepared on the titanium surface through a step-by-step micro-arc oxidation technology, so that space is provided for deep growth of bone cells, meanwhile the calcium element and the phosphorus element in the electrolyte are led into anatase TiO2 at the same time, and the titanium implant body material is made to have good biological activity and biocompatibility.

Description

technical field [0001] The invention mainly relates to the technical field of biomaterials, and more specifically relates to a method for preparing a multi-level pore structure containing calcium and phosphorus on the titanium surface. Background technique [0002] As biomedical metal materials, titanium and titanium alloys have a series of advantages such as non-toxicity, high specific strength, good biocompatibility and good machining performance, and can be used as substitutes for human hard tissues. However, titanium and titanium alloys are quite different from bone tissue in terms of structure and properties. It is a biologically inert material, and it can only form a simple mechanical fit with the bone after being implanted in the organism, but cannot form a strong chemical combination with the surrounding bone tissue, which may easily cause the implant to loosen or even fall off. Therefore, it is necessary to modify the surface to improve the interface bonding state ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/26
Inventor 刘世敏乔志霞李宝娥方泽
Owner TIANJIN UNIV OF COMMERCE
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