Surface Modification of Metallic Inserts for Enhancing Adhesion at the Metal–Polymer Interface

Polymers

Ladislav Fojtl¹  Tomáš Sedláček¹  Lukáš Maňas¹  Ilona Smolková¹  Lenka Musilová²  Markéta Kadlečková²  Aleš Mráček²  Antonín Minařík²  Libor Novák²  Petr Smolka² 

[1] Centre of Polymer Systems, Tomas Bata University in Zlín, Třída Tomáše Bati 5678, 760 01 Zlín, Czech Republic;Department of Physics and Materials Engineering, Faculty of Technology, Tomas Bata University in Zlín, Vavrečkova 275, 760 01 Zlín, Czech Republic;

关键词: insert;    metal;    polymer;    adhesion;    interface;   

DOI  :  10.3390/polym13224015

来源: DOAJ

【 摘 要 】

A combination of mechanical and chemical treatments was utilized to modify the surface textures of copper and duralumin inserts in order to enhance the adhesion at the metal–polymer interface and provide an adhesive joint with a high loadbearing capacity. Pretreatment of the surfaces with sandblasting was followed by etching with various chemical mixtures. The resulting surface textures were evaluated with a scanning electron microscope (SEM) and an optical confocal microscope. Surface geometry parameters (Sa, Sz, and Sdr) were measured and their relationships to the adhesion joint strength were studied. It was found that the virgin and purely mechanically treated inserts resulted in joints with poor loadbearing capacity, while a hundredfold (duralumin) and ninetyfold (copper) increase in the force to break was observed for some combinations of mechanical and chemical treatments. It was determined that the critical factor is overcoming a certain surface roughness threshold with the mechanical pretreatment to maximize the potential of the mechanical/chemical approach for the particular combination of material and etchant.

【 授权许可】

Unknown