Improved adhesion of poly(tetrafluoroethylene) by NH3-plasma treatment
- 1 January 1989
- journal article
- Published by Taylor & Francis in Journal of Adhesion Science and Technology
- Vol. 3 (1) , 637-649
- https://doi.org/10.1163/156856189x00461
Abstract
—Surface modification of poly(tetrafluor oethylene) (PTFE) by NH3-plasma treatment was investigated by means of contact angle measurement, XPS, and ATR FT/IR spectroscopy. The modified surfaces were adhesively bonded to nitril rubber. The NH3-plasma irradiation made PTFE surfaces hydrophilic. The contact angle of water on the modified PTFE surface was 16 deg, and the surface energy was 62-63 mJ/m2. The NH3-plasma irradiation improved adhesion between PTFE and nitril rubber using a phenol-type adhesive. The peel strength of the joints reached 8.1 × 103 N/m. Carbonyl and amido groups were created on PTFE surfaces by the NH3-plasma irradiation. The mechanism of the improvement of adhesion by the NH3-plasma irradiation is discussed.Keywords
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