The method of mechanochemical surface treatment of plastics and polymers has been developed as an alternative to established, technically more complex or work-intensive methods adhesion improving surface treatment. This new methodology is particularly attractive for small and medium-sized companies which apply grinding technology for surface treatment. By combining mechanical surface treatment with the simultaneous use of adhesion-promoting substances, these can be anchored to the material surface.
The process is primarily for the pretreatment of larger parts series or bulk material of interest. With the coupling of mechanical pretreatment and surface activation in a single step, the process offers an additional manufacturing advantage for such series parts which initially have to be cleaned and mechanically treated (deburring, rounding, smoothing) before bonding, painting or coating occurs. The possibility of treating a surface mechanically (e.g.barrel finishing) and simultaneously improving its adhesion properties enables process steps to be economized.
- Aqueous, adhesion improving formulations for the barrel finishing of plastics such as PE, PP, PS, ABS for bonding and coating with two-component adhesives based on EP and PU as well as adjustment of the process parameters
- Solvent-containing formulations for the mechanochemical pretreatment of plastics for adhesive composites with reactive adhesives such as PU, EP, cyanoacrylates