MAKES HYBRID COMPONENTS EVEN LIGHTER AND MORE RIGID
Evonik has expanded its expertise in the automotive sector and developed the adhesion promoter system VESTAMELT® Hylink that improves the performance of polymer-metal structures and allows customers to use up to 20% less material.
VESTAMELT® Hylink is a polyamide-based adhesion promoter specially modified to create an exceptional bond on metallic and polymer surfaces. It improves significantly the mechanical properties compared to existing hybrid components. VESTAMELT® Hylink ensures
a strong bond between metal and plastic
an excellent sealing against humidity (e.g., at weld lines)
VESTAMELT® Hylink is applied to a metallic substrate and thermally pre-cured to prevent a wash-out effect during the injection molding process. The coating retains its thermoplastic character, allowing components to be formed without damaging the coating. In the injection molding process, VESTAMELT® Hylink adhesion promoter creates a firm bond between metal and molding compound. A downstream tempering step (e.g., in the cataphoretic oven) ensures thermal crosslinking of the adhesion promoter and maximum performance of the entire component.
The adhesion promoter
resists cataphoretic oven temperature
is highly deformable and is paintable
shows stable properties during storage
can be numerically simulated
It leads to
enhanced component rigidity
less material consumption allowing lightweight design and economic processes
enhanced design freedom