PSI - Issue 53

Available online at www.sciencedirect.com Available online at www.sciencedirect.com Available online at www.sciencedirect.com

ScienceDirect

Procedia Structural Integrity 53 (2024) 367–375 Structural Integrity Procedia 00 (2023) 000–000 Structural Integrity Procedia 00 (2023) 000–000

www.elsevier.com / locate / procedia www.elsevier.com / locate / procedia

© 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer-review under responsibility of the scientific committee of the ESIAM23 chairpersons © 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http: // creativecommons.org / licenses / by-nc-nd / 4.0 / ) Peer-review under responsibility of the scientific committee of the ESIAM23 chairpersons. Keywords: Multi-component molding; polymer-polymer adhesion; polymer-metal adhesion; Abstract Multi-Component Molding (MCM) enables the combination of di ff erent materials and components in a single manufacturing process, allowing the creation of complex and functional products. Still, inherent challenges related with distinct physical and mechanical properties of the materials tend to arise, namely the adhesion of the involved materials. The development of strategies to improve polymer-polymer and polymer-metal adhesion is of great importance to ensure the integrity of final parts. In this work, an experimental campaign covering di ff erent operational conditions of that moulding process was conducted in order to infer on the adhesion quality of the injected parts. The influence of a coupling agent, maleic anhydride-modified high-density polyethylene (MAMHDPE), on the adhesion quality between PA6 reinforced with 30% (weight) glass fibers (PA6-GF30) and HDPE has been investigated on overmoulded parts. Furthermore, di ff erent thermal (mould pre-heating temperature) and surface conditions (simplified flame treatment and mechanical abrasive sanding) were applied to improve the adhesion between a silver plated bronze insert and HDPE (insert molding). Adhesion tests on the polymer-polymer show an increase of materials’ adhesion when using the coupling agent. Moreover, scanning electron microscopy (SEM) imaging reveals a lower tendency towards defects occurrence at the polymer-metal interface for higher processing temperature in the insert moulding process. © 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http: // creativecommons.org / licenses / by-nc-nd / 4.0 / ) Peer-review under responsibility of the scientific committee of the ESIAM23 chairpersons. Keywords: Multi-component molding; polymer-polymer adhesion; polymer-metal adhesion; Third European Conference on the Structural Integrity of Additively Manufactured Materials (ESIAM23) Investigating Interfacial Bonds in Multi-Component Molding: Polymer-Polymer and Polymer-Metal Adhesion Joa˜o Soeiro a,b , Tiago Silva a, ∗ , Joa˜o Figueiredo c , Lu´ıs Pereira c , Marco Parente a,b , Ana Reis a,b a INEGI, Rua Dr. Roberto Frias 400, Porto 4200-465, PT b Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias s / n, Porto, 4200-465, PT c Second a ffi liation, Address, City and Postcode, Country Abstract Multi-Component Molding (MCM) enables the combination of di ff erent materials and components in a single manufacturing process, allowing the creation of complex and functional products. Still, inherent challenges related with distinct physical and mechanical properties of the materials tend to arise, namely the adhesion of the involved materials. The development of strategies to improve polymer-polymer and polymer-metal adhesion is of great importance to ensure the integrity of final parts. In this work, an experimental campaign covering di ff erent operational conditions of that moulding process was conducted in order to infer on the adhesion quality of the injected parts. The influence of a coupling agent, maleic anhydride-modified high-density polyethylene (MAMHDPE), on the adhesion quality between PA6 reinforced with 30% (weight) glass fibers (PA6-GF30) and HDPE has been investigated on overmoulded parts. Furthermore, di ff erent thermal (mould pre-heating temperature) and surface conditions (simplified flame treatment and mechanical abrasive sanding) were applied to improve the adhesion between a silver plated bronze insert and HDPE (insert molding). Adhesion tests on the polymer-polymer show an increase of materials’ adhesion when using the coupling agent. Moreover, scanning electron microscopy (SEM) imaging reveals a lower tendency towards defects occurrence at the polymer-metal interface for higher processing temperature in the insert moulding process. Third European Conference on the Structural Integrity of Additively Manufactured Materials (ESIAM23) Investigating Interfacial Bonds in Multi-Component Molding: Polymer-Polymer and Polymer-Metal Adhesion Joa˜o Soeiro a,b , Tiago Silva a, ∗ , Joa˜o Figueiredo c , Lu´ıs Pereira c , Marco Parente a,b , Ana Reis a,b a INEGI, Rua Dr. Roberto Frias 400, Porto 4200-465, PT b Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias s / n, Porto, 4200-465, PT c Second a ffi liation, Address, City and Postcode, Country

1. Introduction 1. Introduction

The automotive industry is undergoing a significant transformation, driven by the global trend towards sustainability and the increasing demand for electric vehicles. This paradigm shift requires the development of The automotive industry is undergoing a significant transformation, driven by the global trend towards sustainability and the increasing demand for electric vehicles. This paradigm shift requires the development of

∗ Corresponding author. Tel.: + 0-000-000-0000 ; fax: + 0-000-000-0000. E-mail address: tesilva@inegi.up.pt ∗ Corresponding author. Tel.: + 0-000-000-0000 ; fax: + 0-000-000-0000. E-mail address: tesilva@inegi.up.pt

2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the ESIAM23 chairpersons 10.1016/j.prostr.2024.01.043 2210-7843 © 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http: // creativecommons.org / licenses / by-nc-nd / 4.0 / ) Peer-review under responsibility of the scientific committee of the ESIAM23 chairpersons. 2210-7843 © 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http: // creativecommons.org / licenses / by-nc-nd / 4.0 / ) Peer-review under responsibility of the scientific committee of the ESIAM23 chairpersons.