Design of high strength polymer metal interfaces by laser microstructured surfaces

20th Chemnitz Seminar on Materials Engineering - 20. Werkstofftechnisches Kolloquium

Steinert, P.^1 ; Dittes, A.^2 ; Schimmelpfennig, R.^1 ; Scharf, I.^2 ; Lampke, T.^2 ; Schubert, A.^1

Prof. Micromanufacturing Technology, Chemnitz University of Technology, Chemnitz, Germany^1

Institute of Materials Science and Engineering, Chemnitz University of Technology, Chemnitz, Germany^2

关键词: Glass fiber reinforced polyamides;    High strength polymers;    Laser structuring;    Light-weight constructions;    Mechanical interlocking;    Micro-structured surfaces;    Multi-material designs;    Surface conditioning;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/373/1/012015/pdf
DOI  :  10.1088/1757-899X/373/1/012015

来源: IOP

【 摘 要 】

In the areas of automotive, aeronautics and civil structures, lightweight construction is a current and a future need. Thus, multi material design has rapidly grown in importance, especially hybrid materials based on fiber reinforced plastics and aluminum offer great potential. Therefore, mechanical interlocking is a convenient way of designing the interface. Laser structuring is already used to generate a variety of surface topographies leading to high bond strengths. This paper investigates different laser structures aiming on highest joint strengths for aluminum and glass fiber reinforced polyamide 6 interfaces. Self-organizing pin structures comprised by additional micro/nano features as well as drilled hole structures, both ranging on the micrometer range, are compared to corundum blasting as a standard method for surface conditioning. For the presented surface structures, thermal joining and ultrasonic assisted joining are regarded towards their potential for an optimum joint design.