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Nanosecond laser ablation of stainless steel surface and thermal decomposition of zinc acetate compound method for preparing antibacterial surface, antibacterial material and application

A laser ablation, zinc acetate technology, applied in nanotechnology for materials and surface science, laser welding equipment, metal material coating process and other directions, can solve the complex preparation method of nano zinc oxide antibacterial surface, high cost, environmental problems pollution and other problems, to achieve the effect of reducing the preparation cycle, high processing efficiency, and saving chemical reagents

Active Publication Date: 2021-07-02
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It effectively solves the problems of complicated nano-zinc oxide antibacterial surface preparation method, high cost, and environmental pollution.

Method used

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  • Nanosecond laser ablation of stainless steel surface and thermal decomposition of zinc acetate compound method for preparing antibacterial surface, antibacterial material and application
  • Nanosecond laser ablation of stainless steel surface and thermal decomposition of zinc acetate compound method for preparing antibacterial surface, antibacterial material and application
  • Nanosecond laser ablation of stainless steel surface and thermal decomposition of zinc acetate compound method for preparing antibacterial surface, antibacterial material and application

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preparation example Construction

[0029] As introduced in the background technology, there are problems of long period or environmental pollution in the current preparation method of nano-zinc oxide antibacterial surface. Therefore, the present invention proposes a nanosecond laser ablation of a stainless steel surface and a method for compounding an antibacterial surface with zinc acetate thermal decomposition, comprising:

[0030] Pretreatment of stainless steel;

[0031] The pretreated stainless steel sample is drilled with nanosecond laser to form a micro-nano structure;

[0032] Deposit zinc acetate micro-droplets on the micro-nano structure;

[0033] Perform laser secondary ablation to decompose zinc acetate to produce nanoparticles;

[0034] It can be obtained after cleaning.

[0035] The existing gas phase precipitation method has low utilization rate of chemical reagents and large consumption, and the antibacterial surface concentration of nanometer zinc oxide obtained is low. The invention uses l...

Embodiment 1

[0064] (1) Pretreatment, put a 10mm×10mm×2mm stainless steel sample into absolute ethanol for ultrasonic cleaning for 5 minutes to remove debris and impurities on the surface, and then air-dry at room temperature.

[0065] (2) Laser drilling for the first time: see attachment figure 1 , put the workpiece after ultrasonic cleaning on the infrared nanosecond laser processing platform; adjust the laser beam to focus on the surface of the sample, set the average power of the laser to 5W, the pulse frequency to 200kHz, and the scanning speed to 3000mm / min, The scanning pitch is 15 μm. Laser drilling parameters: drilling diameter 0.1mm, hole distance 0.15mm, drilling time 200ms / hole, such as figure 1 shown.

[0066] (3) Zinc acetate micro-droplet deposition: fully mix absolute ethanol with 50mmol / L zinc acetate solution, prepare a 3% zinc acetate ethanol solution, put it into an ultrasonic atomizer and turn it on, and align it with the sample The surface is evenly sprayed, the mo...

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Abstract

The invention relates to a method for preparing an antibacterial surface by combining nanosecond laser ablation and zinc acetate thermal decomposition on the surface of stainless steel, an antibacterial material and its application, which solves the problems of long preparation period and low productivity of nano zinc oxide antibacterial surface. Zinc oxide is more high-quality and efficient, and can be completed by a single process on the laser processing platform, greatly shortening the preparation cycle. The invention comprises the following steps: (1) ultrasonically cleaning the stainless steel sample in absolute ethanol and air-drying; (2) performing a nanosecond laser drilling on the sample to obtain a micro-nano structure; (3) using Ultrasonic atomizer, spray the zinc acetate ethanol solution evenly on the surface of the workpiece; (4) perform a second nanosecond laser ablation on the sample; (5) ultrasonically spray the sample with acetone, absolute ethanol, and deionized water Wash for 10 minutes to remove the undecomposed zinc acetate adhered to the surface and the slag generated by laser ablation, so as to obtain the nano-zinc oxide antibacterial surface.

Description

technical field [0001] The invention belongs to the technical field of material surface modification, and is a technology for preparing a micro-nano surface structure and depositing nano-zinc oxide to achieve an antibacterial effect on stainless steel, and specifically relates to a composite preparation method through laser-chemical thermal decomposition. 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] Due to the good electrical and thermal conductivity and antibacterial properties of nano-zinc oxide materials, it has attracted widespread attention in recent years. It has begun to be used in aerospace and marine ships, and has broad applications in the fields of ceramics, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C18/12C23C18/04B23K26/362B23K26/382B82Y30/00B82Y40/00
CPCB23K26/362B82Y30/00B82Y40/00B23K26/382C23C18/04C23C18/1216C23C18/1258C23C18/1266
Inventor 唐一平蔡玉奎王磊刘战强万熠宋清华
Owner SHANDONG UNIV