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Method for performing surface modification on inner wall and outer wall of tube by adopting atmospheric-pressure plasma

A plasma, inner and outer wall technology, applied in the direction of plasma, electrical components, etc., can solve the problems of length limitation, limited jet penetration length, etc., and achieve the effects of low cost, improved surface energy, simple and flexible operation

Active Publication Date: 2016-06-15
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these two methods can only modify the surface of the inner wall of the tube, and at the same time, the length of the tube that can be modified is limited due to the limited plasma discharge intensity or the penetration length of the plasma jet.

Method used

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  • Method for performing surface modification on inner wall and outer wall of tube by adopting atmospheric-pressure plasma
  • Method for performing surface modification on inner wall and outer wall of tube by adopting atmospheric-pressure plasma
  • Method for performing surface modification on inner wall and outer wall of tube by adopting atmospheric-pressure plasma

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specific Embodiment

[0021] Such as figure 2 and image 3 Shown is the embodiment provided by the present invention. The selected working gas source 5 is argon, the working gas source 8 is helium, the high-voltage power supply 7 is an AC power supply, the output frequency is 50-120kHz, the output voltage is 0-10kV, the maximum power is 150W, the plasma jet 2 and the tubular material to be processed The vertical distance between 3 is 10mm. figure 2 Shown is the plasma jet 2 generated by the dielectric barrier discharge and the plasma 4 induced in the tubular material 3 to be treated, the modification time is 30 seconds, image 3 Shown are photos of water droplets on the surface of the inner and outer walls of the tube before and after modification, which shows that the wettability of the inner and outer walls of the tube is greatly improved after modification. It can be seen that this method can effectively modify the surface of the inner and outer walls of the tube.

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Abstract

The invention provides a method for performing surface modification on the inner wall and the outer wall of a tube by adopting atmospheric-pressure plasma and belongs to the technical field of surface treatment of plasma materials. The method comprises the steps that produced plasma jet is applied to the surface of a to-be-processed tubular material, working gas is introduced into the to-be-processed tubular material, and plasma is formed in the to-be-processed tubular material; the plasma jet performs surface modification on the outer wall of the to-be-processed tubular material; meanwhile, an electric field for ionizing the working gas in the to-be-processed tubular material is provided, so that the plasma is generated in the tube and realizes surface modification on the inner wall of the to-be-processed tubular material; when the to-be-processed tubular material performs rotating and feeding motion in the axial direction, surface modification on the inner wall and the outer wall of the tubular material with any length can be realized. According to the method, complicated vacuum equipment is not needed, simultaneous modification of the inner wall and the outer wall of the tube with any length is realized by controlling motion of the processed tube, the cost is low, the operation is simple and flexible, environmental pollution is avoided, and the method for surface modification is environment-friendly.

Description

technical field [0001] The invention relates to a method for simultaneously modifying the surface of the inner wall and the outer wall of a tubular material by atmospheric pressure plasma, and belongs to the technical field of plasma material surface treatment. Background technique [0002] Wettability is one of the important properties of the surface of materials, and the poor surface wettability of many materials affects its biocompatibility, adhesion, etc. A variety of methods have been used to improve the surface wettability of materials, such as wet chemical method, laser treatment, ultraviolet treatment and plasma treatment, etc. Among them, plasma surface treatment technology is favored because of its small impact on the substrate material and environmental friendliness. Widespread concern. The invention patents with publication numbers CN1526753A, CN1900408A, and CN202318981U all provide devices and methods for surface modification of materials using plasma. Howeve...

Claims

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Application Information

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IPC IPC(8): C08J7/12C08L27/18H05H1/24
CPCC08J7/123C08J2327/18C08L27/18C08L2203/18H05H1/2406
Inventor 刘新陈发泽刘吉宇刘硕黄帅杨晓龙宋金龙
Owner DALIAN UNIV OF TECH
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