河北大学学报(自然科学版) >

2019 , Vol. 39 >Issue 5: 478 - 483

DOI: https://doi.org/10.3969/j.issn.1000-1565.2019.05.006

氩气等离子体刷放电特性及其对PET表面改性的实验研究

  • 许慧敏 ,
  • 唐潇 ,
  • 许龙飞 ,
  • 赵娜 ,
  • 高坤 ,
  • 贾鹏英
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许慧敏(1977—),女,河北博野人,河北金融学院讲师,博士,主要从事高电压技术方向研究. E-mail:xuhuimin@126.com

收稿日期: 2019-03-20

  网络出版日期: 2019-09-25

基金资助

河北省自然科学基金资助项目(A2016201042);河北省研究生创新资助项目(CXZZBS2019023)

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Experimental study on discharge characteristics of argon plasma brush and its surface modification of PET

  • XU Huimin ,
  • TANG Xiao ,
  • XU Longfei ,
  • ZHAO Na ,
  • GAO Kun ,
  • JIA Pengying
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  • 1. Department of Basic Teaching, Hebei Institute of Finance, Baoding 071051, China; 2. College of Physics Science and Technology, Hebei University, Baoding 071002, China

Received date: 2019-03-20

  Online published: 2019-09-25

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摘要

在直流电源激励下,利用大气压等离子体刷产生了脉冲形式的均匀氩气放电等离子体羽.结果表明,等离子体羽成片状,且随着氩气流量的增加,片状等离子体羽的长度增加.利用该氩气等离子体刷,对聚对苯二甲酸乙二醇酯(PET)表面改性进行了研究.发现经过等离子体刷一次扫描之后,可在宽度为24.0 mm的范围内改善PET表面的亲水性.进一步的研究结果表明,样品表面的水接触角随着气体流速的增加而减小,最终达到一个几乎不变的值.在扫描电镜下,观察到改性后的PET表面出现了含氧极性基团.并且,含氧极性基团的数量和尺度随着气体流速的增加而增大.这些研究结果对于大气压等离子体刷在等离子体表面改性方面的应用研究具有重要意义.

关键词： 等离子体刷; 表面改性; 均匀放电; 水接触角

本文引用格式

许慧敏 , 唐潇 , 许龙飞 , 赵娜 , 高坤 , 贾鹏英 . 氩气等离子体刷放电特性及其对PET表面改性的实验研究[J]. 河北大学学报(自然科学版), 2019 , 39(5) : 478 -483 . DOI: 10.3969/j.issn.1000-1565.2019.05.006

Abstract

With blowing argon, a uniform planar plume with pulsed discharges is generated in ambient air at atmospheric pressure through a plasma brush excited by a direct current power supply. Results indicate that the core of the planar plume is very uniform, while its two edges are much brighter than the core region. Meanwhile, the length of the argon plume increases with increased gas flow rate. This argon brush is then used to improve hydrophilicity of polyethylene terephthalate(PET)surface. After a single scan of the plasma brush on the PET surface, a uniform surface modification is achieved with an improved hydrophilic width of about 24.0 mm. The polar groups are contained in oxidized materials, which are observed by scanning electron microscopy. Moreover, these polar groups have increased number density and scale with increasing the gas flow rate. Furthermore, water contact angle is found to decrease with increasing the gas flow rates until it reaches an almost constant value.

Key words： plasma brush; surface modification; uniform discharge; water contact angle

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