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Plasma Sci. Technol. ›› 2018, Vol. 20 ›› Issue (3): 035401.doi: 10.1088/2058-6272/aa9885

• Low Temperature Plasma • Previous Articles     Next Articles

Exploration to generate atmospheric pressure glow discharge plasma in air

Wenzheng LIU (刘文正)1, Chuanlong MA (马传龙), Shuai ZHAO (赵帅), Xiaozhong CHEN (陈晓中), Tahan WANG (王踏寒), Luxiang ZHAO (赵潞翔), Zhiyi LI (李治一), Jiangqi NIU (牛江奇), Liying ZHU (祝莉莹) and Maolin CHAI (柴茂林)   

  

  1. School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, People’s Republic of China
  • Received:2017-09-23 Published:2017-11-06

Abstract:

Atmospheric pressure glow discharge (APGD) plasma in air has high application value. In this paper, the methods of generating APGD plasma in air are discussed, and the characteristics of dielectric barrier discharge (DBD) in non-uniform electric field are studied. It makes sure that APGD in air is formed by DBD in alternating current electric field with using the absorbing electron capacity of electret materials to provide initial electrons and to end the discharge progress. Through designing electric field to form two-dimensional space varying electric field and three-dimensional space varying electric field, the development of electron avalanches in air-gap is suppressed effectively and a large space of APGD plasma in air is generated. Further, through combining electrode structures, a large area of APGD plasma in air is generated. On the other hand, by using the method of increasing the density of initial electrons, millimeter-gap glow discharge in atmospheric pressure air is formed, and a maximum gap distance between electrodes is 8 mm. By using the APGD plasma surface treatment device composed of contact electrodes, the surface modification of high polymer materials such as aramid fiber and polyester are studied and good effect of modifications is obtained. The present paper provides references for the researchers of industrial applications of plasma.

Key words: dielectric barrier discharge, electric field distribution, atmospheric pressure glow discharge plasmas