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Optimisation of 3D Printing for Microcellular Polymers

Christian Griffiths, Andrew Rees, Adam Morgan Orcid Logo, Feras Korkees Orcid Logo

Polymers, Volume: 15, Issue: 19, Start page: 3910

Swansea University Authors: Christian Griffiths, Andrew Rees, Adam Morgan Orcid Logo, Feras Korkees Orcid Logo

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DOI (Published version): 10.3390/polym15193910

Abstract

Polymers are extensively used in various industries due to their versatility, durability and cost-effectiveness. To ensure functionality and longevity, polymer parts must have sufficient strength to endure external forces without deformation or breakage. Traditional approaches to increasing part str...

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Published in: Polymers
ISSN: 2073-4360
Published: MDPI AG 2023
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa64691
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Abstract: Polymers are extensively used in various industries due to their versatility, durability and cost-effectiveness. To ensure functionality and longevity, polymer parts must have sufficient strength to endure external forces without deformation or breakage. Traditional approaches to increasing part strength involve adding more material; however, balancing strength to weight relationships is challenging. This paper explorers the viability of manufacturing lightweight components using a microcellular foaming polymer. Microcellular foaming has emerged as a helpful tool to achieve an optimal strength-to-weight ratio; offering advantages such as lightweight, improved mechanical properties, reduced material usage, better insulation and improved cost-effectiveness. It can also contribute to improved fuel efficiency and reduced carbon emissions, making them environmentally favourable. The combination of additive manufacturing (AM) and microcellular foaming has opened new possibilities for design innovation. This text highlights the challenges and efforts in incorporating foaming techniques into 3D printing processes, specifically fused filament fabrication (FFF). This study reveals that microcellular polymers are a viable option when balancing part strength and weight. The experiments completed during the formulation of this paper demonstrated that lightweight LW-PLA parts were significantly lighter than standard PLA parts and that a design of experiments approach can be used to optimise strength properties and provide insights into optimising manufacturability. Microcellular polymers present an opportunity for lighter and stronger 3D printed parts, offering potential energy and material savings for sustainable manufacturing practices.
Keywords: Additive manufacturing, 3D printing, fused filament fabrication, fused deposition modelling, lightweight PLA
College: Faculty of Science and Engineering
Issue: 19
Start Page: 3910