Grundlagen der Haftung Polymer/Metall am Beispiel Polymer/Aluminium Abschlussbericht

The polymer/metal adhesion was studied using the system polycyanurat on aluminum. As an approach of research we concentrated on the fundamental processes at the polymer/metal interface. Using ultrathin polymer films the formation and stability of this interface was investigated with surface-analytical techniques like AFM, IR, XPS and SAM and with electrochemical techniques like impedance spectroscopy and the Scanning-Kelvin-Probe. The relative humidity during the formation of thin films and the molecular structure of the polymer at the phase boundary dominate the electrochemical stability as well as the macroscopic mechanical behavior of the polymer/metal compound. By the help of adhesion promoters the molecular orientation at the interface was modified and the stability against electrolytes increased. During the research project a stress-and-strain apparatus was developed which allows to study the cracking behavior of adhered polymer films in-situ with AFM under lateral mechanical stress. Furthermore an apparatus for the Scanning-Kelvin probe was constructed in order to investigate the failure of an intern polymer/metal interface under superimposed electrochemical and mechanical stress. (orig.)SIGLEAvailable from TIB Hannover: F99B1099+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Bildung, Wissenschaft, Forschung und Technologie, Bonn (Germany)DEGerman