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Volume 5, Issue 6 (Suppl) J Mat. Sci.
ISSN: 2321-6212 Advanced Materials 2017
October 26-28, 2017
OCTOBER 26-28, 2017 OSAKA, JAPAN
13TH INTERNATIONAL CONFERENCE ON
Advanced Materials and Nanotechnology
Effect of O2 or H2 gas addition to Ar gas on surface modification of fluoropolymer using atmospheric
pressure plasma: Application for highly adhesive Ag wiring pattern on plasma-treated fluoro polymer
Yoshinori Kodama1, Y Ohkubo1, T Oshita 2, T Aoki1, T Nakagawa1, K Endo1 and K Yamamura1
1Osaka University, Japan
2Sekisui Chemical Co., Ltd., Japan
Data communication volume is drastically increasing with the expansion of the global communication network. For high
rate communication, high frequency printed circuit boards made of materials having a highly dielectric property are
required. Polytetrafluoroethylene (PTFE) has an excellent dielectric property but poor adhesion property to metal because of
its low surface energy. For strong adhesion, PTFE and/or metal surface is roughened to obtain an anchor effect, which induces
large transmission loss and low transmission rate. In this study, we aimed to modify the PTFE surface without increasing
the surface roughness using atmospheric pressure plasma to improve the adhesion property to Ag ink film. In the case of Ar
plasma treatment, the Ag/PTFE adhesion strength was 0.06 N/mm and the color of the PTEE surface changed from white to
red-yellow. This coloration was caused by the fluorine-containing deposition on the plasma-treated PTFE surface and it caused
low adhesion strength. To avoid the coloration, we added the O2 or H 2 gas to Ar gas with varying the concentration (≤3%). In
the case of Ar+O2 plasma treatment, the coloration decreased with increasing the O2 concentration but the Ag/PTFE adhesion
strength decreased to 0.0 N/mm. In the case of Ar+H2 plasma treatment, the coloration did not occur. In addition, the Ag/
PTFE adhesion strength increased to 0.55 N/mm when H2 concentration was controlled at 0.5%. We realized the prevention of
coloration and increase in the Ag/PTFE adhesion property upon control of H2 gas concentration in Ar gas.
Biography
Yoshinori Kodama is currently pursuing his graduation degree from Osaka University in Japan.
Yoshinori Kodama et al., J Mat. Sci. 2017, 5:6
DOI: 10.4172/2321-6212-C1-008