Degradable composite film layer on magnesium alloy surface and its preparation method and application
A composite film, magnesium alloy technology, applied in surface reaction electrolytic coating, pretreatment surface, metal material coating process, etc., can solve the problem of high porosity, difficult to protect magnesium alloy substrate, and pores on the surface of MAO film, etc. problems, to achieve the effect of improving biocompatibility, corrosion resistance and biocompatibility
Active Publication Date: 2021-04-06
SHANDONG UNIV
View PDF22 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, the inventors have found that the molten oxides and bubbles produced in the MAO reaction process are thrown out from the micro-arc discharge channel, which will cause pores on the surface of the MAO film layer, and finally form a higher porosity, which is difficult to play an ideal role in a corrosive environment. The role of protecting the magnesium alloy substrate
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0066] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
[0067] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| surface roughness | aaaaa | aaaaa |
| contact angle | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses a degradable composite film layer on the surface of a magnesium alloy and its preparation method and application. The composite film layer includes a micro-arc oxidation film layer and a composite film layer. The micro-arc oxidation film layer is attached to the surface of a magnesium alloy substrate. The film layer is attached on the micro-arc oxidation film layer, and the composite film includes at least one layer of self-assembled film, each layer includes chitosan-nano-titanium dioxide-gelatin layer and heparin sodium layer, or each layer includes chitosan- Gelatin layer and sodium heparin layer. When a composite film is attached on the micro-arc oxidation film, the corrosion resistance of the magnesium alloy substrate can be significantly improved, but it will affect the wettability of the magnesium alloy substrate more or less. When nano-titanium dioxide is added to the composite film , not only can further improve the corrosion resistance of the composite film, but also can improve the wettability of the composite film, and can provide more nucleation sites for the formation of calcium phosphorus compounds, showing better osseointegration performance; Promotes cell adhesion and proliferation by providing more cytoplasmic binding sites.
Description
technical field [0001] The invention belongs to the technical field of magnesium alloy surface modification, and in particular relates to a degradable composite film layer on the surface of magnesium alloy and its preparation method and application. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Traditional metal biomaterials usually require the metal to have good corrosion resistance in the body, while the new biodegradable metal requires that its main component is an essential metal element that can be metabolized by the human body, can gradually dissolve in the body, and the task of the implant is completed. Dissolves completely to help tissue heal without implant res...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): A61L27/40C22C23/04C25D11/30C23C26/00C23C28/00B05D1/18B05D1/38B05D3/02A61L31/02A61L31/12A61L31/10A61L31/14
CPCA61L31/022A61L31/10A61L31/148B05D1/185B05D1/38B05D3/0254C22C23/04C23C26/00C23C28/00C25D11/026C25D11/30
Inventor 陈传忠陈阳于慧君
Owner SHANDONG UNIV