Journal of Textile Research ›› 2020, Vol. 41 ›› Issue (08): 15-21.doi: 10.13475/j.fzxb.20191202007

• Fiber Materials • Previous Articles     Next Articles

Effect of plasma treatment on adhesion performance of polytetrafluoroethylene film

CHEN Qian1, LIAO Zhen1, XU Ming2, ZHU Yawei1,3()   

  1. 1. College of Textile and Clothing Engineering, Soochow University, Suzhou, Jiangsu 215021, China
    2. Changzhou Hi Levi Textile Technology, Co., Ltd., Changzhou, Jiangsu 213125, China
    3. National Engineering Laboratory for Modern Silk, Suzhou, Jiangsu 215123, China
  • Received:2019-12-09 Revised:2020-05-09 Online:2020-08-15 Published:2020-08-21
  • Contact: ZHU Yawei E-mail:yaweizhu@suda.edu.cn

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Abstract:

In order to improve the adhesion performance of polytetrafluoroethylene (PTFE) film, this research studied the effect of oxygen plasma treatment on the stripping strength and water contact angle of the film surface, and compared the adhesive strength of films treated by oxygen, nitrogen and argon plasma. In addition, the changes of surface element, morphology and roughness were measured by means of X-ray photoelectron spectroscopy, scanning electron microscopy and atomic force microscopy. The results show that the stripping strength is increased by 539.8% and the contact angle is increased by 11.4° (up to 120.4°) when the PTFE film is treated with nitrogen plasma. When the discharge magnitude is below 36 kJ, the stripping strength of the oxygen-treated PTFE film increases exponentially with the increase of discharge power. When the discharge magnitude is higher, the pattern of lotus leaf with the concave and convex grooves is formed on the PTFE film surface, and the shape of lotus leaf of PTFE film determines the film adhesion and hydrophobicity.

Key words: polytetrafluoroethylene film, plasma treatment, film modification, adhesion performance, surface etching

CLC Number: 

  • TM89

Tab.1

Processing condition of PTFE film with plasma treatment"

样品
编号		 气体
种类		 功率/
W		 时间/
min		 气体流量/
(cm3·min-1)		 放电量/
kJ
1# O2 300 2 5 36.0
2# N2 300 2 5 36.0
3# Ar 300 2 5 36.0
4# O2 40 2 5 4.8
5# O2 300 2 40 36.0
6# O2 300 1 5 18.0
7# O2 300 2 10 36.0
8# O2 300 2 20 36.0
9# O2 300 2 30 36.0
10# O2 300 2 60 36.0
11# O2 70 2 5 8.4
12# O2 100 2 5 12.0
13# O2 200 2 5 24.0
14# O2 300 3 5 54.0
15# O2 300 4 5 72.0
16# O2 300 5 5 90.0

Fig.1

XPS spectra of PTFE films with different gas plasma treatment"

Fig.2

C1s spectra of PTFE films with N2 plasma treatment"

Fig.3

SEM images of PTFE film with O2 plasma treatment at different discharge capacity (×25 000). (a) Untreated PTFE film; (b) 4#;(c) 5#;(d) 6#"

Fig.4

SEM images of PTFE film with different gas plasma treatment (×25 000). (a) Untreated PTFE film;(b) 1#;(c) 2#; (d) 3#"

Fig.5

AFM images of PTFE film with different gas plasma treatment. (a) Untreated PTFE film; (b) 1#; (c) 2#; (d) 3#"

Fig.6

Influence of treatment power on stripping strength and contact angle of PTFE composite film"

Fig.7

Influence of oxygen gas flow on stripping strength and contact angle of PTFE composite film"

Fig.8

Influence of time on stripping strength and contact angle of PTFE composite film"

Fig.9

Influence on stripping strength and contact angle of PTFE composite film with different gas plasma treatment"

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