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Method capable of enhancing antibacterial property of silicon nitride ceramic and application thereof

A technology of silicon nitride ceramics and performance, applied in the field of silicon nitride ceramics, can solve the problems of difficult adjustment of auxiliary acid oxidation electrolyte, low bonding strength between coating and substrate, poor stability, etc., to inhibit bacterial adhesion and change shape Features, the effect of reducing biofilm

Inactive Publication Date: 2020-06-05
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the defects and deficiencies of the prior art, such as low bonding strength between the coating and the substrate and poor stability; the addition of metal ions is easy to release in the body, the auxiliary acid oxidation electrolyte is difficult to control, and has potential safety hazards. A method with simple operation, high safety, and enhanced antibacterial performance of silicon nitride ceramics

Method used

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  • Method capable of enhancing antibacterial property of silicon nitride ceramic and application thereof
  • Method capable of enhancing antibacterial property of silicon nitride ceramic and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1 A kind of method that can enhance the antibacterial property of silicon nitride ceramics

[0025] The method for enhancing the bacteriostatic properties of silicon nitride ceramics includes the following steps:

[0026] S1. Take 9.3g of sodium hydroxide powder in a crucible, heat it to 400°C and melt to obtain molten sodium hydroxide;

[0027] S2. Place the silicon nitride ceramic in ethanol, ultrasonically clean it for 10 min, take it out and dry it, and place it in the molten sodium hydroxide obtained in step S1, react at 400 °C for 20 min, take it out, wash it with a large amount of deionized water, and dry at 60 °C, Silicon nitride ceramic sample 1 was obtained.

Embodiment 2

[0028] Embodiment 2 A kind of method that can enhance the antibacterial property of silicon nitride ceramics

[0029] The method for enhancing the bacteriostatic properties of silicon nitride ceramics includes the following steps:

[0030] S1, take 20g of sodium hydroxide powder in the crucible, heat to 325 ℃ and melt under the condition, obtain molten sodium hydroxide;

[0031] S2. Put the silicon nitride ceramic in ethanol, ultrasonically clean it for 3 minutes, take it out and dry it, put it in the molten sodium hydroxide obtained in step S1, react at 325 °C for 3 minutes, take it out, wash it with a large amount of deionized water, and dry it at 60 °C. Silicon nitride ceramic sample 2 was obtained.

Embodiment 3

[0032] Embodiment 3 A kind of method that can enhance the antibacterial property of silicon nitride ceramics

[0033] The method for enhancing the bacteriostatic properties of silicon nitride ceramics includes the following steps:

[0034] S1, take 15g sodium hydroxide powder in the crucible, heat it to 350 ℃ and melt under the condition, obtain molten sodium hydroxide;

[0035] S2. Place the silicon nitride ceramic in ethanol, ultrasonically clean it for 10 min, take it out and dry it, and place it in the molten sodium hydroxide obtained in step S1, react at 350°C for 60min, take it out, wash it with a large amount of deionized water, and dry at 60°C. Silicon nitride ceramic sample 3 was obtained.

[0036] Taking Example 1 as an example, the morphology of the silicon nitride ceramics without etching after cleaning and the silicon nitride ceramics sample 1 prepared in Example 1 was observed by scanning electron microscope. The results are shown in Figures 1 to 2 .

[0037]...

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Abstract

The invention belongs to the technical field of silicon nitride ceramics, and particularly relates to a method capable of enhancing the antibacterial performance of silicon nitride ceramics and an application thereof. According to the method, alkaline sodium hydroxide is creatively used for carrying out modification treatment on the silicon nitride ceramic; the roughness of the surface of the silicon nitride ceramic can be remarkably improved, the morphological characteristics of the surface of the silicon nitride ceramic are changed, bacterial adhesion is inhibited, a biofilm on the surface of a sample is remarkably reduced, the effect of enhancing the antibacterial activity of the silicon nitride ceramic is achieved, and the silicon nitride ceramic can be used as a medical implant material or substitute.

Description

technical field [0001] The invention belongs to the technical field of silicon nitride ceramics. More specifically, it relates to a method and application for enhancing the bacteriostatic properties of silicon nitride ceramics. Background technique [0002] Non-oxide silicon nitride (Si 3 N 4 ) ceramic is a kind of inorganic synthetic material with special properties. It has the advantages of high strength, high room temperature flexural strength, wear resistance, oxidation resistance and corrosion resistance. It is widely used in industry and has broad development prospects. On the other hand, Si 3 N 4 It has also gradually begun to be applied in the field of biomedical technology, with Si 3 N 4 The non-cytotoxicity-based implant facilitates cell adsorption, proliferation and differentiation, and has properties such as bacteriostasis, promotion of new bone formation, and increased protein adsorption in bone replacement, as well as excellent biocompatibility. and exce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/91
CPCC04B41/009C04B41/5361C04B41/91C04B35/565
Inventor 袁莉娟左飞罗锐鑫林华泰
Owner GUANGDONG UNIV OF TECH
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