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Surface treatment of plastic material by pulse corona induced plasma chemical process-PPCP

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6 Author(s)
Masuda, S. ; Masuda Res Inc., Tokyo, Japan ; Hosokawa, S. ; Tochizawa, I. ; Akutsu, K.
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A novel plasma chemical process PPCP (pulse corona induced plasma chemical process) can produce copious active radicals in air under NTP (normal temperature and pressure) by using an extremely fast rising narrow high voltage pulse between corona electrodes and grounded counter electrodes so that intense streamer coronas are generated. This provides an effective means of surface treatment to a plastic material placed between the two electrodes through generation of free bonds on the surface directed to the corona electrodes. Special features of this method are that it can cope with a complex shape of the material to be treated, and that it does not spark even at the periphery near the grounded counter electrode. This method is suitable for the surface treatment of polypropylene bumpers so as to provide a strong adhesion of color paint to it. The adhesion strength of a paint film is raised from zero to ca. 1000 g/cm2 by PPCP treatment for 60 seconds

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Industry Applications, IEEE Transactions on  (Volume:30 ,  Issue: 2 )