Comparative tensile strength study of the adhesion improvement of PTFE by UV photon assisted surface processing

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14 Citations (Scopus)

Abstract

Poly(tetrafluoroethylene) (PTFE) is notable for its non-adhesive and non-reactive properties. A number of technologies can potentially benefit from the application of PTFE, but these characteristics restrict the ability to structuring its surface. In this paper, we present results on two ultraviolet photon assisted treatments of PTFE. The originally poor adhesion was significantly improved by both 172nm excimer lamp and 193nm excimer laser assisted surface treatments. While Xe 2 * lamp irradiation, applied in a modest vacuum environment, was sufficient by itself to improve adhesion, the ArF laser process was only effective when the irradiated interface was in contact with 1,2-diaminoethane photoreagent. It was found that the tensile strength of an epoxy resin glued interface created on treated surfaces depended strongly on the applied number of laser pulses and lamp irradiation time. Laser treatment caused fast tensile strength increase during the first 50-500 pulses, while after this it saturates slowly at about 5.5MPa in the 500-2500 pulse domain. The excimer lamp irradiation resulted in a maximum tensile strength of approximately 10MPa after 2min irradiation time which reduced to about 65% of the peak value at longer times.

Original languageEnglish
Pages (from-to)80-84
Number of pages5
JournalApplied Surface Science
Volume186
Issue number1-4
DOIs
Publication statusPublished - Jan 28 2002
EventProceedings of the European Materials Research Society 2001 Symposium - Strasbourg, France
Duration: Jun 5 2001Jun 5 2001

Keywords

  • Adhesion
  • PTFE
  • Tensile strength
  • UV photon assisted surface processes

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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