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Surface pretreatment of plastics for adhesive bonding

 
: Kruse, A.; Krüger, G.; Baalmann, A.; Hennemann, O.-D.

:

Journal Adhesion 9 (1995), Nr.12, S.1611-1621
Englisch
Zeitschriftenaufsatz
Fraunhofer IFAM ()
adhesion; adhesive bonding; corona; fluorination; plasma; plastics; surface pretreatment

Abstract
Many plastics have a poor tendency to bond to other materials because of their inherent inert chemical structure and thus require a pretreatment. Wet chemical methods are expensive because of the disposal of the waste liquids. In this study, the corona treatment (Iona] process), the low-pressure plasma process, and the fluorination process were tested and compared with each other. The following plastics were tested: PP (polypropylene), PBT (polybutyleneterephthalate), PBT blends, and a high-temperature thermoplastic, PEEK (polyetheretherketone). In particular, the low-temperature plasma process results in excellent adhesion strength. In addition, we have shown that the stability of freshly plasma-treated surfaces could be maintained for time periods of at least several days.

: http://publica.fraunhofer.de/dokumente/PX-35423.html