Abstract
With polymer-metal hybrids becoming more commonly used as structural components it was investigated how they perform in complex environments with combined thermal, media, and mechanical loads. Special attention was put on media tightness under said loads. This paper sums up the activities of the polymer technology research group of the University of Kassel on hybrids produced by overmolding metal inserts. Investigations concerning joint strength and influence of (cyclic) temperature loads and chemical corrosion on media tightness of the joint were undertaken with different polymer-metal hybrid specimen geometries (simple and complex). In order to enhance adhesion and joint strength, different bonding agents and adhesives were used in the experiments. It could be shown that all joints of polymer-metal hybrids lost their tightness after being exposed to temperature ranges from 30 to +150°C due to their highly different thermal expansion behavior. An elastomeric intermediate layer of certain minimum thickness in order to compensate the relative movement of plastic and metal and thus maintain integrity of the joint regardless of temperatures is proposed.
References
Amancio-Filho, S. T., Dos Santos, J. F., “Joining of Polymers and Polymer-Metal Hybrid Structures–Recent Developments and Trends”, Polym. Eng. Sci., 49, 1461–1476 (2009) 10.1002/pen.21424Search in Google Scholar
Ehrenstein, G. W., Amesöder, S., Diaz, L. F., Niemann, H. and Deventer, R., “Werkstoff- und prozessoptimierte Herstellung flächiger Kunststoff-Kunststoff- und Kunststoff-Metall-Verbundbauteile“, Berichts- und Industriekolloquium of SFB, Erlangen, p. 396 (2003)Search in Google Scholar
EU2005: “Type-Approval of Motor Vehicles with Regard to their Reusability, Recyclability and Recoverability and Amending”, Directive 2005/64/EC of the European Parliament and of the Council of 26 October 2005, Council Directive 70/156/EEC, Brussels, (2005)Search in Google Scholar
EU 2007: “Type Approval of Motor Vehicles”, Regulation (EC) No 715/2007, Brussels (2007)Search in Google Scholar
Fedler, M., Quitter, D., “Dichtes Umspritzen von Einlegeteilen und deren Prüfung“, http://www.konstruktionspraxis.vogel.de/dichtes-umspritzen-von-einlegeteilen-und-derenprue-fung-a-358630, (2016)Search in Google Scholar
Geminger, T., Weber, J., Arend, C., Heim, H.-P. and Lührs, G.-F., “Lightweight Construction Potential in the Powertrain–Transmission Housing Produced by the Plastic/Metal Hybrid Method”, ANTEC Conference Proceedings Part 1, 144–148 (2011)Search in Google Scholar
Gleich, H., Esser, G., “Fügen im Aggregatebereich–Dichtkleben von Motoranbauteilen aus Kunststoff“, Adhäsion Kleben & Dichten, 54, 38–41 (2010)10.1007/BF03243942Search in Google Scholar
Grujicic, M., Sellappan, V., Omar, M. A., Seyr, N., Obieglo, A., Erdmann, M. and Holzleitner, J., “An Overview of the Polymer-to-Metal Direct-Adhesion Hybrid Technologies for Load-Bearing Automotive Components”, J. Mater. Process. Technol., 197, 363–373 (2008) 10.1016/j.jmatprotec.2007.06.058Search in Google Scholar
Habenicht, G.: Kleben–Grundlagen, Technologien, Anwendungen. Springer-VerlagBerlin Heidelberg (2009)10.1007/978-3-540-85266-7Search in Google Scholar
Heim, H.-P. (Ed.): Specialized Injection Molding Techniques (PDL Handbook Series), Elsevier Science Publishing, Amsterdam (2015)Search in Google Scholar
Otto, P. D., Rauchmaul, S., German Auslegeschrift DE 3318151 A1 (1983)Search in Google Scholar
Paul, H., Luke, M., “Langfaserverstärkte Metall-Hybridverbunde: Bewertung des Verformungs- und Versagensverhaltens”, Konstruktion, 9, IW 11–12 (2010)Search in Google Scholar
Paul, H., Luke, M. and Henning, F., “Evaluation of the Joining Mechanisms of Polymer Metal Components”, ECCM15–15th European Conference on Composite Materials, Venice, Italy (2012)Search in Google Scholar
Paul, H., Luke, M. and Henning, F., “Combining Mechanical Interlocking, Force Fit and Direct Adhesion in Polymer–Metal-Hybrid Structures–Evaluation of the Deformation and Damage Behavior”, Composites Part B, 73, 158–165 (2015) 10.1016/j.compositesb.2014.12.013Search in Google Scholar
Rauchschwalbe, M., Ries, A., Lührs, G. F., and Weber, J., German Auslegeschrift DE 102014226302 A1 (2014)Search in Google Scholar
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