Joining of polymer and surface-modified metal by laser welding

The present invention relates to a method of joining a metal part 1 and a non-liquid polymer part 2. The first step of the method is to attach a primer 4 to a metal surface 3 of the metal part 1. The primer 4 is then polymerized so that the metal surface 3 is at least partly covered with surface imm...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KRISTENSEN JENS KLAESTRUP, NIELSEN STEEN-ERIK, HINGE MOGENS, PEDERSEN STEEN UTTRUP, STRANGE MARIANNE, DAASBJERG KIM
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON DYES GENERAL PROCESSES OF COMPOUNDING INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PERFORMING OPERATIONS POLISHES SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF MATERIALS AS ADHESIVES WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	The present invention relates to a method of joining a metal part 1 and a non-liquid polymer part 2. The first step of the method is to attach a primer 4 to a metal surface 3 of the metal part 1. The primer 4 is then polymerized so that the metal surface 3 is at least partly covered with surface immobilized polymer brushes 5. Then the metal surface 3 with the polymer brushes 5 is brought into contact with a polymer surface of the polymer part 2, so that an interface is obtained comprising the metal surface 3, the primer 4, the polymer brushes 5 and the polymer surface. Finally, the interface is heated by use of laser welding until the polymer brushes 5 and a part of the polymer part 2 is melt or soften and mix to such an extent that the metal part 1 and the polymer part 2 remain joined after cooling. The welding may e.g. be performed so that so that welding seams are obtained along equidistant lines across the surface.