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Method for preparing glass microfibre reinforcement nano-hydroxyapatite biological composite coating

A technology of nano-hydroxyapatite and glass microfibers, which is applied in the direction of coating, etc., can solve the problem of low bonding force between coatings and coatings, and achieve the effect of improving the bonding strength and stabilizing the crystal phase of the coating

Inactive Publication Date: 2012-10-10
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are still problems of low bonding between the coating and the substrate, and between the coating and the coating
[0008] At present, domestic and foreign studies on improving the binding force between the surface of C\C composite materials and hydroxyapatite are mainly focused on the deposition process and surface modification of C\C substrates. The study of the bonding strength inside the coating has not been reported

Method used

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  • Method for preparing glass microfibre reinforcement nano-hydroxyapatite biological composite coating

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: 1) Preparation of nano-hydroxyapatite powder

[0023] First, pure Ca(NO 3 ) 2 4H 2 O and (NH 2 ) 2 HPO 4 Mix according to the molar ratio of calcium to phosphorus of 1:1.57, then add distilled water to dissolve, so that the Ca in the solution 2+ The ion concentration is 0.04mol / L; then in the solution according to Ca(NO 3 ) 2 4H 2 O and (NH 2 ) 2 HPO 4 Total mass: urea=1:5 Add urea powder to make a mixed solution, and stir evenly; under magnetic stirring, put the generation head of the multi-frequency sonochemical generator into the above mixed solution, and respectively under the ultrasonic power of 100w Sonochemical synthesis at 40°C for 1.5 hours, then heated to 70°C for 2 hours; after filtering the suspension, wash it with distilled water and then with absolute ethanol, put the filtered material in a vacuum drying oven at 80°C drying under high pressure to obtain nano-hydroxyapatite powder, that is, nano-Hap powder;

[0024] 2) Preparation...

Embodiment 2

[0030] Embodiment 2: 1) Preparation of nano-hydroxyapatite powder

[0031] First, pure Ca(NO 3 ) 2 4H 2 O and (NH 2 )2 HPO 4 Mix according to the molar ratio of calcium to phosphorus of 1:1.67, then add distilled water to dissolve, so that the Ca in the solution 2+ The ion concentration is 0.08mol / L; then in the solution according to Ca(NO 3 ) 2 4H 2 O and (NH 2 ) 2 HPO 4 Total mass: urea=1:6 Add urea powder to make a mixed solution, and stir evenly; under magnetic stirring, put the generation head of the multi-frequency sonochemical generator into the above mixed solution, respectively Sonochemical synthesis at 40°C for 1.5 hours, then heated to 70°C for 2 hours; after filtering the suspension, wash it with distilled water and then with absolute ethanol, put the filtered material in a vacuum drying oven at 80°C drying under high pressure to obtain nano-hydroxyapatite powder, that is, nano-Hap powder;

[0032] 2) Preparation of glass micro short fibers

[0033] Ta...

Embodiment 3

[0038] Embodiment 3: 1) Preparation of nano-hydroxyapatite powder

[0039] First, pure Ca(NO 3 ) 2 4H 2 O and (NH 2 ) 2 HPO 4 Mix according to the molar ratio of calcium to phosphorus of 1:1.77, then add distilled water to dissolve, so that the Ca in the solution 2+ The ion concentration is 0.12mol / L; then in the solution according to Ca(NO 3 ) 2 4H 2 O and (NH 2 ) 2 HPO 4 Total mass: urea=1:7 Add urea powder to make a mixed solution, and stir evenly; under magnetic stirring, put the generation head of the multi-frequency sonochemical generator into the above mixed solution, respectively, under the ultrasonic power of 300w Sonochemical synthesis at 40°C for 1.5 hours, then heated to 70°C for 2 hours; after filtering the suspension, wash it with distilled water and then with absolute ethanol, put the filtered material in a vacuum drying oven at 80°C drying under high pressure to obtain nano-hydroxyapatite powder, that is, nano-Hap powder;

[0040] 2) Preparation of...

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Abstract

The invention relates to a method for preparing a glass microfibre reinforcement nano-hydroxyapatite biological composite coating, comprising the following steps of: firstly, mixing Ca(NO3)2.4H2O and (NH2)2HPO4 and adding distilled water to dissolve; then adding urea powder to make the mixture into mixed liquor; putting a generating head of a multi-frequency phonochemistry generator into the mixed liquor, filtering and drying after phonochemistry synthesis, then obtaining nano-HAp powder; dispersing the nano-HAp powder, analytically pure chitosan and glass microfibre in isopropanol, then obtaining suspending liquid; pouring the suspending liquid into a hydrothermal electrophoresis reaction kettle; putting the reaction kettle in a precise constant temperature oven, galvanizing and depositing; then drying and finally obtaining the composite coating. Nano-hydroxyapatite powder is prepared by using a phonochemistry synthesis method, and therefore, the prepared composite coating is compactand even, the crystalline phase of the coating is stable, the bonding strength can be greatly increased; and the expected bonding strength reaches 20-40MPa.

Description

technical field [0001] The invention relates to a preparation method of a biological composite coating, in particular to a preparation method of a glass microfiber reinforced nano-hydroxyapatite biological composite coating. Background technique [0002] In recent years, bone repair and bone substitute materials have become one of the research hotspots in the field of biomaterials research. [0003] Hydroxyapatite (referred to as HA or HAP, its molecular formula Ca 10 (PO 4 ) 6 (OH) 2 ) is the main component of inorganic matter in human bone tissue. It has good biocompatibility, bioactivity and bony connection. It is considered to be the most potential human implant in the repair and reconstruction of human bone tissue defects. body material. However, the brittleness of hydroxyapatite and its inability to bear loads limit its application range (Jiang Geng, Wang Binghua, Journal of Changjiang University, 2008, 5(3): 20). In view of this, the surface of medical metal (ti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61L27/32
Inventor 黄剑锋王文静曹丽云吴建鹏
Owner SHAANXI UNIV OF SCI & TECH
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