Enhancing the mechanical performance of 3D‐printedbasalt fiber‐reinforced composites using in‐line atmospheric plasma pretreatments

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dc.contributor.authorDowling, Denis P.-
dc.contributor.authorAbourayana, Hisham M.-
dc.contributor.authorBrantseva, Tatiana-
dc.contributor.authorAntonov, Andrey-
dc.contributor.authorDobbyn, Peter-
dc.date.copyright2019 Wileyen_US
dc.identifier.citationPlasma Processes and Polymeren_US
dc.description.abstractThe objective of this study is to investigate the use of an air atmospheric plasma jet for the treatment of sized basalt fibres, used in the fabrication of continuous fibre reinforced polypropylene filaments. The plasma treatments were carried out both at a laboratory scale, as well as in-line during the production of fibre reinforced filaments. The latter was carried out at a fibre processing speeds of approx. 15 metres/second, just immediately prior to the polymer coating of the fibre by extrusion. After the air plasma treatment, the water contact angle of the sized basalt fibre decreased from 86° to < 10°. XPS analysis demonstrated that the treatment yielded enhanced levels of oxygen functionality on the fibre surface. After coating with polypropylene, it was observed that there was consistently more homogeneous polymer layer deposited onto the plasma activated fibre, compared with that on the unactivated control fibre. The resulting polymer filament with embedded basalt fibre was used to fabricate mechanical test specimens by 3D printing (fused filament fabrication method). Both three-point bending tests and short beam strength tests were performed. A comparison study was carried out between test specimens fabricated using sized basalt fibre, with and without the plasma pre-treatment. The flexural modulus and maximum shear stress were found to increase by 12% and 13% respectively, for composite's fabricated using the plasma pre-treated basalt fibres. This increased mechanical strength is likely to be due to an increase in interfacial bond strength between the polymer and fibre, with an associated reduction in the level of air incorporation around the basalt filaments as demonstrated using CT analysis.en_US
dc.description.sponsorshipScience Foundation Irelanden_US
dc.rightsThis is the pre-peer reviewed version of the following article:Dowling, DP, Abourayana, HM, Brantseva, T, Antonov, A, Dobbyn, PJ. Enhancing the mechanical performance of 3D‐printed basalt fiber‐reinforced composites using in‐line atmospheric plasma pretreatments. Plasma Process Polym. 2020; 17:1900143.which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1002/ppap.201900143en_US
dc.subject3D printingen_US
dc.subjectAtmospheric plasma jeten_US
dc.subjectBasalt fiberen_US
dc.subjectShort beam testen_US
dc.subjectThree-point testen_US
dc.titleEnhancing the mechanical performance of 3D‐printedbasalt fiber‐reinforced composites using in‐line atmospheric plasma pretreatmentsen_US
dc.typeJournal Articleen_US
dc.statusPeer revieweden_US
dc.citation.otherArticle Number: 1900143en_US
dc.neeo.contributorDowling|Denis P.|aut|-
dc.neeo.contributorAbourayana|Hisham M.|aut|-
dc.description.othersponsorship3Dom Filamentsen_US
dc.description.othersponsorshipIrish Center for Composite Research (IComp)en_US
dc.description.othersponsorshipI‐Form Advanced Manufacturing Research Centreen_US
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