Preparation method for medical metal-based biocoating

A bio-coating, metal-based technology, used in coatings, pharmaceutical formulations, electrolytic coatings, etc., can solve the problems of low interface bonding strength of coatings, loose and peeling coatings, uneven coatings, etc., to achieve low production costs, The effect of mild surface treatment and simple treatment process

Active Publication Date: 2017-01-04
东阳市特意新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem mainly solved by the present invention is: in view of the traditional medical metal-based biological coatings in the preparation process, the coatings obtained by plasma spraying are not uniform, the treatment temperature is high, and the coatings are prone to loosening and peeling during use, and the coatings are easy to be roasted. In order to solve the problem of low bonding strength of the coating interface obtained by other methods, a method for preparing a medical metal-based bio-coating is provided.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0022]The cut size is 20mm×16mm×1mm rolling plate AZ31 magnesium alloy, polished with metallographic sandpaper until the surface is uniform and smooth, cleaning the surface of the magnesium alloy rolling plate 3 times with acetone, and then cleaning 2 times with 75% alcohol, and the surface is After natural air-drying, manually apply 10g of honey with a brush, then transfer the rolled magnesium alloy plate into a vacuum drying oven at 75°C, and dry it for 2 hours to obtain a pretreated magnesium alloy rolled plate for later use; in the mixer, Add 2L of seawater and 100g of activated sludge from the secondary sedimentation tank in turn, start stirring them, stir and mix at 600r / min for 20min, discharge the material, transfer the obtained material into an airtight glass container, and then place the glass container under sunlight and expose it to the sun. 3h; after the exposure is over, put the spare pretreated magnesium alloy rolled plate into the above glass container, place it...

example 2

[0025] The cut size is 20mm×16mm×1mm rolling plate AZ31 magnesium alloy, polished with metallographic sandpaper until the surface is uniform and smooth, cleaning the surface of the magnesium alloy rolling plate 4 times with acetone, and then cleaning 3 times with 75% alcohol, and the surface is After natural air-drying, manually apply 11g of honey with a brush, then transfer the rolled magnesium alloy plate into a vacuum drying oven at 78°C, and dry it for 3 hours to obtain a pretreated magnesium alloy rolled plate for later use; in the mixer, Add 3L of seawater and 120g of activated sludge from the secondary settling tank in turn, start stirring them, stir and mix at 700r / min for 25min, discharge the material, transfer the obtained material into a closed glass container, and then place the glass container under sunlight and expose it to the sun. 4h; when the exposure is over, put the spare pretreated magnesium alloy rolled plate into the above-mentioned glass container, place ...

example 3

[0028] The cut size is 20mm×16mm×1mm rolling plate AZ31 magnesium alloy, polished with metallographic sandpaper until the surface is even and smooth, cleaning the surface of the magnesium alloy rolling plate 5 times with acetone, and then cleaning 4 times with 75% alcohol, and the surface is After natural air-drying, 12g of honey was artificially coated with a brush, and then the rolled magnesium alloy plate was transferred to a vacuum drying oven at 80°C, and dried for 4 hours to obtain a pretreated magnesium alloy rolled plate for use; in the mixer, Add 4L of seawater and 150g of activated sludge from the secondary sedimentation tank in turn, start stirring them, stir and mix at 800r / min for 30min, discharge the material, transfer the obtained material into a closed glass container, and then place the glass container under sunlight and expose it to the sun. 5h; when the exposure is over, put the spare pretreated magnesium alloy rolled plate into the above glass container, pla...

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Abstract

The invention discloses a preparation method for a medical metal-based biocoating, and belongs to the field of metal coating material synthesis. According to the method, the surface of magnesium alloy is cleaned and degreased with acetone, after honey is coated, the magnesium alloy is soaked in seawater and secondary sedimentation tank activated sludge, and microorganisms and algae in seawater and sludge are catalyzed to invade into the surface of the magnesium alloy for growth corrosion through sunlight exposure; and after drying sintering, components which is rich in hydroxyl and facilitates crystallization of hydroxylapatite are formed on the surface of the magnesium alloy, in the electrophoretic deposition process, a substrate and the coating are chemically bonded, the interface bonding strength is greatly improved, and finally the medical metal-based biocoating is obtained through sintering. The biocoating is uniform in thickness, high in bonding force with the substrate and not prone to loosening and peeling off in the using process, and the service life is greatly prolonged.

Description

technical field [0001] The invention discloses a preparation method of a medical metal-based biological coating, which belongs to the field of synthesis of metal coating materials. Background technique [0002] Hydroxyapatite (HA for short) has the same structure as the inorganic substances in human bones, is non-toxic, has no external body reaction after implantation in the human body, has good biological activity and biocompatibility, and is an ideal human bone substitute material. Studies have shown that after the porous HA is implanted into the organism, the soft and hard tissues at the interface can grow into the gap, forming a cross-bonded state of fibrous tissue and newly formed bone tissue. This interface can maintain normal metabolic relationship, bone-material The interface structure has physiological binding. However, porous HA is a brittle material with low strength and poor toughness, which greatly limits its use as a human implant. [0003] Therefore, an effe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D15/00A61L27/32A61L27/04
CPCA61L27/047A61L27/32A61L2400/18A61L2420/02A61L2430/02C25D15/00
Inventor 张国华许博伟
Owner 东阳市特意新材料科技有限公司
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