Investigating Interfacial Bonds in Multi-Component Molding: Polymer-Polymer and Polymer-Metal Adhesion

• DOI: 10.1016/j.prostr.2024.01.043
• Publication Date: 2024-02-09T04:04:11Z
• Authors: João Soeiro; Tiago Silva; João Figueiredo; Luís Pereira; Marco Parente; Ana Reis
• Keywords: Molding (decorative); Component (thermodynamics)

Multi-Component Molding (MCM) enables the combination of different materials and components in a single manufacturing process, allowing creation complex functional products. Still, inherent challenges related with distinct physical mechanical properties tend to arise, namely adhesion involved materials. The development strategies improve polymer-polymer polymer-metal is great importance ensure integrity final parts. In this work, an experimental campaign covering operational conditions that moulding process was conducted order infer on quality injected Influence coupling agent, maleic anhydride-modified high-density polyethylene (MAMHDPE), between PA6 reinforced 30% (weight) glass fibers (PA6-GF30) HDPE has been investigated overmoulded Furthermore, thermal (mould pre-heating temperature) surface (simplified flame treatment abrasive sanding) were applied silver-plated bronze insert (insert molding). Adhesion tests show increase materials' when using agent. Moreover, scanning electron microscopy (SEM) imaging reveals lower tendency towards defects occurrence at interface for higher processing temperature process.