Degradable high-toughness composite material with antibacterial function and preparation method thereof

A composite material, strong and tough technology, applied in the field of degradable, antibacterial, strong and tough composite materials and their preparation, which can solve the problems of easily causing bacterial infection, precipitation of toxic ions, bacterial inflammatory response, etc.

Active Publication Date: 2021-01-08
珠海中科先进技术研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the common clinical medical implants are mainly made of inert metal materials such as stainless steel, nickel-titanium alloy, and cobalt-chromium alloy. After implanted into the human body, such metal materials will permanently exist as foreign bodies, which will cause toxic ion precipitation, Undegradable, inappropriate mechanical strength, vascular intimal hyperplasia, local inflammatory response, especially easy to cause bacterial infection
[0003] In the prior art, magnesium alloy materials are used as medical implant devices, but the degradation rate of magnesium alloys in the prior art is too fast in the human body, which limits the application of magnesium alloys as implant materials, and the magnesium alloys in the prior art After being implanted in the human body for a period of time, it will act as a foreign body to induce rejection, produce a bacterial inflammatory response, and cause the surrounding new tissue to form slowly
The above conditions have hindered the clinical application of magnesium alloys.

Method used

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  • Degradable high-toughness composite material with antibacterial function and preparation method thereof
  • Degradable high-toughness composite material with antibacterial function and preparation method thereof
  • Degradable high-toughness composite material with antibacterial function and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0111] Embodiment 1: the preparation of composite material

[0112] This example provides a composite material with antibacterial function, degradability and toughness, which includes 60% of magnesium alloy layer, 1% of intermediate alloy layer and 39% of zinc alloy layer according to volume percentage; the intermediate alloy layer is composed of magnesium zinc silver Alloy composition.

[0113] The magnesium alloy layer is composed of magnesium alloy, and the magnesium alloy also includes the following components in terms of mass percentage:

[0114] Ag 4.0%

[0115] Nd 3.0%;

[0116] The zinc alloy layer is composed of zinc alloy, and the zinc alloy also includes the following components in terms of mass percentage:

[0117] Ag 4.0%

[0118] Nd 3.0%;

[0119] The preparation method of above-mentioned magnesium alloy comprises the following steps:

[0120] (1) Weigh Ag, Nd, and Mg (remainder) according to the proportion, and then vacuum smelt. The temperature of vacuum ...

Embodiment 2

[0139] Embodiment 2: the preparation of composite material

[0140] This example provides a composite material with antibacterial function, degradability and toughness, which includes 65% of the magnesium alloy layer, 2% of the intermediate alloy layer and 33% of the zinc alloy layer in terms of volume percentage.

[0141] The magnesium alloy layer is composed of magnesium alloy, and the magnesium alloy also includes the following components in terms of mass percentage:

[0142]

[0143] The zinc alloy layer is composed of zinc alloy, and the zinc alloy also includes the following components in terms of mass percentage:

[0144]

[0145] The preparation method of above-mentioned magnesium alloy comprises the following steps:

[0146] (1) Weigh Ag, Nd, Mn, Sn, Mg (residue) according to the proportion, then vacuum smelt, the temperature of vacuum smelt is 760 ℃, in the process of vacuum smelting, pass into argon to stir, the time of described stirring 50min to obtain a p...

Embodiment 3

[0165] Embodiment 3: the preparation of composite material

[0166] This example provides a composite material with antibacterial function, degradability and toughness, which includes 72% of magnesium alloy layer, 3% of intermediate alloy layer and 25% of zinc alloy layer in terms of volume percentage.

[0167] The magnesium alloy layer is composed of magnesium alloy, and the magnesium alloy also includes the following components in terms of mass percentage:

[0168] Ag 3.0%

[0169] Nd 3.0%

[0170] Mn 1.0%;

[0171] The zinc alloy layer is composed of zinc alloy, and the zinc alloy also includes the following components in terms of mass percentage:

[0172] Ag 3.0%

[0173] Nd 3.0%

[0174] Mn 1.0%;

[0175] The preparation method of above-mentioned magnesium alloy comprises the following steps:

[0176] (1) Weigh Ag, Nd, Mn, Mg (residue) according to the proportion, then vacuum smelt, the temperature of vacuum smelt is 760 ℃, in the process of vacuum smelting, feed a...

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PUM

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Abstract

The invention belongs to the technical field of alloy materials, and discloses a degradable high-toughness composite material with an antibacterial function and a preparation method thereof. The composite material comprises a magnesium alloy layer, an intermediate alloy layer and a zinc alloy layer, wherein the magnesium alloy layer and the zinc alloy layer comprise Ag; the intermediate alloy layer is made of magnesium-zinc-silver alloy; the magnesium alloy layer is made of magnesium alloy, and the magnesium alloy further comprises at least one of Nd, Mn or Sn; and the zinc alloy layer is madeof zinc alloy, and the zinc alloy further comprises at least one of Nd, Mn or Sn. The composite material can simultaneously meet the characteristics of long-acting antibacterial function, low degradation rate and good mechanical property, and is beneficial to the application of the composite material in the medical field.

Description

technical field [0001] The invention belongs to the technical field of alloy materials, and in particular relates to a composite material with antibacterial function, degradability and toughness and a preparation method thereof. Background technique [0002] At present, the common clinical medical implants are mainly made of inert metal materials such as stainless steel, nickel-titanium alloy, and cobalt-chromium alloy. After implanted into the human body, such metal materials will permanently exist as foreign bodies, which will produce toxic ion precipitation, Non-degradable, inappropriate mechanical strength, vascular intimal hyperplasia, local inflammatory response, especially easy to cause bacterial infection. [0003] Magnesium alloy materials are used as medical implant devices in the prior art, but the degradation rate of magnesium alloys in the prior art is too fast in the human body, which limits the application of magnesium alloys as implant materials, and the magn...

Claims

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Application Information

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IPC IPC(8): B32B15/01B32B33/00C22C23/00C22C18/00C22C30/06C22C23/04B22F9/04C22F1/02C21D1/26C21D9/00
CPCB32B15/01B32B33/00C22C23/00C22C18/00C22C30/06C22C23/04B22F9/00B22F9/04C22F1/02C21D1/26C21D9/0081B22F2009/043B22F2009/001B32B2255/06B32B2255/205B32B2307/7145B32B2556/00
Inventor 马国睿吴锋
Owner 珠海中科先进技术研究院有限公司
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