USE OF ATMOSPHERIC PRESSURE PLASMA TO IMPROVE THE ADHESIVE PROPERTIES OF GLASS AND POLYAMIDE 6 IN THE BONDING OF ADDITIONAL PARTS IN THE AUTOMOTIVE INDUSTRY

Abstract

In the search for alternatives to the commonly used methods of the pre-treatment of surfaces, plasma discharge applications are appearing more and more. In the case of the automotive industry, where the attention is focused on finding methods that are more environmentally friendly, more economically advantageous and process-friendly, plasma is a suitable option. In the case of gluing additional parts with polyurethane glue to the car glass, the use of plasma activation or cleaning of the joined materials improves the adhesion properties. Through this process, it is possible to achieve an increase in the force required to break the joint, as well as an increase in the proportion of the desired cohesive failure of the adhesive. A process including a point nozzle plasma used on the glass surface and a rotating plasma nozzle to activate the surface of the holder made of polyamide 6 with a glass fibre content of 30% was found to be particularly suitable. The effect of plasma was also investigated using a surface tension test using test inks, observing the materials using an optical microscope, and the cleaning efficiency was analysed using infrared spectroscopy.

Keywords

• glass
• polyamide 6
• plasma
• surface properties
• adhesion
• automotive industry
• gluing