Next Article in Journal
Study of the Effect of Methyldiethanolamine Initiator on the Recording Properties of Acrylamide Based Photopolymer
Previous Article in Journal
Natural Compounds as Sustainable Additives for Biopolymers
Previous Article in Special Issue
Effect of PEW and CS on the Thermal, Mechanical, and Shape Memory Properties of UHMWPE
Open AccessArticle

Influence of Manufacturing Parameters and Post Processing on the Electrical Conductivity of Extrusion-Based 3D Printed Nanocomposite Parts

1
Departamento de Ingeniería Mecánica, Universidad de Las Palmas de Gran Canaria, 35017 Las Palmas de Gran Canaria, Spain
2
Departamento de Física de la Materia Condensada, ICMS, CSIC-Universidad de Sevilla, Apartado 1065, 41080 Sevilla, Spain
*
Authors to whom correspondence should be addressed.
Polymers 2020, 12(4), 733; https://doi.org/10.3390/polym12040733
Received: 1 March 2020 / Revised: 20 March 2020 / Accepted: 23 March 2020 / Published: 25 March 2020
(This article belongs to the Special Issue Functional Polymers in Additive Manufacturing)
The influence of manufacturing parameters of filament extrusion and extrusion-based Additive Manufacturing (AM), as well as different post processing techniques, on the electrical conductivity of 3D printed parts of graphene nanoplatelets (GNP)-reinforced acrylonitrile butadiene styrene (ABS) has been analyzed. The key role of the manufacturing parameters to obtain electrically conductive filaments and 3D printed parts has been demonstrated. Results have shown that an increase in extrusion speed, as well as lower land lengths, induces higher extrudate swelling, with the consequent reduction of the electrical conductivity. Additionally, filaments with lower diameter values, which result in a higher surface-to-cross-section ratio, have considerably lower electrical conductivities. These factors tune the values of the volume and surface electrical conductivity between 10−4–100 S/m and 10−8–10−3 S/sq, respectively. The volume and surface electrical conductivity considerably diminished after 3D printing. They increased when using higher printing layer thickness and width and were ranging between 10−7–10−4 S/m and 10−8–10−5 S/sq, respectively. This is attributed to the higher cross section area of the individual printed lines. The effect of different post processing (acetone vapor polishing, plasma and neosanding, which is a novel finishing process) on 3D printed parts in morphology and surface electrical conductivity was also analyzed. View Full-Text
Keywords: extrusion-based AM; 3D printing; graphene nanoplatelets; ABS; manufacturing parameters; post processing; neosanding; volume and surface electrical conductivity extrusion-based AM; 3D printing; graphene nanoplatelets; ABS; manufacturing parameters; post processing; neosanding; volume and surface electrical conductivity
Show Figures

Graphical abstract

MDPI and ACS Style

Paz, R.; Moriche, R.; Monzón, M.; García, J. Influence of Manufacturing Parameters and Post Processing on the Electrical Conductivity of Extrusion-Based 3D Printed Nanocomposite Parts. Polymers 2020, 12, 733.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop