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Preparing method of titanium-based material surface composite antibacterial coating

A surface composite, titanium-based technology, applied in the direction of metal material coating process, coating, superimposed layer plating, etc., to achieve good repeatability, improve effectiveness, and promote dissociation effects

Inactive Publication Date: 2016-03-09
BEIJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The three-dimensional composite antibacterial coating on the surface of titanium-based materials constructed in this way has not been reported yet.

Method used

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  • Preparing method of titanium-based material surface composite antibacterial coating
  • Preparing method of titanium-based material surface composite antibacterial coating
  • Preparing method of titanium-based material surface composite antibacterial coating

Examples

Experimental program
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Effect test

Embodiment 1

[0017] (1) Surface pretreatment of titanium sheet: polish the surface of titanium sheet with sandpaper until it is bright and without obvious scratches, soak the polished titanium sheet material in 30% NaOH solution, ultrasonicate for 30min, and then rinse the titanium sheet with ultrapure water After rinsing, blow dry, place the titanium piece in 10% oxalic acid solution and boil for 1 hour, take out the titanium piece and wash it with ultrapure water.

[0018] (2) Preparation of TNTs on the surface of the titanium sheet: the titanium sheet pretreated in step (1) is placed in an electrochemical anodizing device, the titanium sheet is used as the anode, the graphite is the cathode, and the electrolyte is an aqueous solution containing 1% HF. The distance between the electrodes is 6 cm, oxidized at a constant potential of 40 V for 20 min, and then the titanium sheet is taken out and placed in a muffle furnace, and anatase TNTs are produced by heat treatment at 500 °C for 1 h.

...

Embodiment 2

[0023] (1) Titanium sheet surface pretreatment: Take the pure titanium sample surface and polish it with sandpaper until it is bright and without obvious scratches, soak the polished titanium sheet material in 40% NaOH solution, ultrasonic for 20min, and then rinse with ultrapure water After the titanium sheet was rinsed, it was blown dry, and then the titanium sheet was placed in 10% oxalic acid solution and boiled for 1 hour, and the titanium sheet was taken out and cleaned with ultrapure water.

[0024] (2) Preparation of TNTs on the surface of titanium-based materials: place the pretreated titanium sheet in an electrochemical anodizing device, use the titanium sheet as the anode, graphite as the cathode, and the electrolyte contains 2% NaF, 85% ethylene glycol and 13 % water; the distance between the cathode and anode electrodes is 10cm, oxidize at a constant potential of 40V for 20min, then take out the titanium sheet and place it in a muffle furnace, heat treatment at 500...

Embodiment 3

[0028] Steps 1, 3, and 4 of this example are the same as those of Example 2, except that NH 4 F is an oxidizing agent, and the specific steps include: placing the pretreated titanium sheet in an electrochemical anodizing device, using the titanium sheet as the anode, graphite as the cathode, and the electrolyte containing 5% NH 4 F, 85% ethylene glycol and 10% water; the distance between the cathode and anode electrodes is 6cm, oxidized at a constant potential of 40V for 20min; then take out the titanium sheet and place it in a muffle furnace, heat treatment at 500°C for 2h to make a sharp Titanite-type TNTs.

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Abstract

A preparing method of a titanium-based material surface composite antibacterial coating mainly comprises the steps that the titanium-based material surface pretreatment is carried out, the surface of a titanium-based material is smooth and bright, an oxide surface layer is removed, the electrochemical oxidation is carried out on the titanium-based material surface and soluble fluoride, titania nanotube arrays (TNTs) are formed on the titanium-based material surface, nano-silver is loaded in a titania nanotube array structure through the chemical reduction method, finally, the upper faces of titania nanotubes are loaded with a polylactic acid-poly lactic-co-glycolic acid (PLGA) coating containing biological membrane depolymerization micromolecule substance bi (3-amidogen propyl group) amine, and a TNTs-Ag-PLGA / bi(3- amidogen propyl group) amine three-dimensional composite antibacterial coating is formed. According to the antibacterial coating, the slow release time of nano-silver is obviously prolonged, the effectiveness of nano-silver is improved, and the more efficient and durable antibacterial effect is achieved.

Description

technical field [0001] The present invention relates to a method for preparing a composite antibacterial coating on the surface of a material, in particular to a method for preparing a titanium nanotube on the surface of a titanium-based material and loading nano-silver and containing microbiological depolymerization small molecule bis(3-aminopropyl) Composite bacteriostatic coating method of amine polymer. The invention belongs to the technical field of microbial inhibition and biofilm control. Background technique [0002] Biofilm refers to a structured microbial community formed by planktonic bacteria attached to biotic or abiotic surfaces and bound together by their own secreted extracellular polymeric substances (EPS). Biofilms widely exist in the environment, such as disinfection systems, water pipes, industrial pipelines, ventilation equipment, medical equipment, and human tissues and organs under pathological conditions. The formation of harmful biofilms can cause ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/26C23C18/42C23C28/00
Inventor 全向春司秀荣
Owner BEIJING NORMAL UNIVERSITY
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