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Activating adherend surfaces by applying arc-discharge treatment

Aktivierung von Klebflächen durch Bogenentladungen
: Kleinert, H.; Großer, S.; Schultrich, B.; Siemroth, P.


International journal of adhesion and adhesives 17 (1997), Nr.3, S.203-206 : Ill., Lit.
ISSN: 0143-7496
Fraunhofer IWS ()
Bogentechnologie; Röntgenoptik

The demands on adhesive joints and for their long-term durability, especially under extreme environmental conditions, are steadily increasing. Most of the currently used chemical methods of adherend surface pretreatment that lead to high values of strength and ageing resistance are no longer acceptable for environmental reasons. As a possible alternative method, a pretreatment utilising the physical energy of arc discharges was studied. It was found that the strength and ageing resistance of adhesive joints prepared with the one-step arcing procedure was of the same order as, or even better than, those with the best chemical pretreatment technologies currently available. The research is continuing, with the focus on obtaining higher working speeds, optimising the procedure and its application to different materials.