| Abstrakt: |
Multi material design combines the positive properties of the different materials (e.g. fiber reinforced polymers and metals). Thus, polymer-metal hybrids based on thermoplastic materials represent the state of the art and are used in numerous industrial applications. In contrast, the use of thermoset-metal hybrids for components is challenging since the complex manufacturing processes, e.g. using the autoclave technology. In order to use the good material properties of thermoset materials in hybrid components, a method and technology development along the entire product cycle is necessary. In the presented work, the influence of various surface pretreatments on the interfacial adhesion of thermoset-metal hybrids was investigated on the basis of tensile lap-shear test specimens produced in the injection molding process. As polymer components phenolic and epoxy resin-based molding compounds were used. Different types of steel (16MnCr5, S355; 100Cr6) were used as metal components. The aim of the investigations was to increase the adhesion by using different surface coatings (ZnPh, MnPh, ZnCaPh). To study the effects in the interface between polymer and metal the scanning electron microscope was used. Mechanical testing of the test specimens showed that the epoxy molding compound had a higher interfacial adhesion to all steel types than the phenolic molding compound. Furthermore, the surface coatings led to a significant influence on the interfacial adhesion depending on the steel type used. [ABSTRACT FROM AUTHOR] |
