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Nanofibre distribution in composites manufactured with epoxy reinforced with nanofibrillated cellulose: model prediction and verification
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.ORCID-id: 0000-0002-2388-3358
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap. University of Jyvaskyla, Department of Physics.
CSI Composites.
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.ORCID-id: 0000-0003-4762-2854
Antal upphovsmän: 42016 (Engelska)Ingår i: IOP Conference Series: Materials Science and Engineering, ISSN 1757-8981, E-ISSN 1757-899X, Vol. 139, artikel-id 012011Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

In this study a model based on simple scattering is developed and used to predict the distribution of nanofibrillated cellulose in composites manufactured by resin transfer moulding (RTM) where the resin contains nanofibres. The model is a Monte Carlo based simulation where nanofibres are randomly chosen from probability density functions for length, diameter and orientation. Their movements are then tracked as they advance through a random arrangement of fibres in defined fibre bundles. The results of the model show that the fabric filters the nanofibres within the first 20 µm unless clear inter-bundle channels are available. The volume fraction of the fabric fibres, flow velocity and size of nanofibre influence this to some extent. To verify the model, an epoxy with 0.5 wt.% Kraft Birch nanofibres was made through a solvent exchange route and stained with a colouring agent. This was infused into a glass fibre fabric using an RTM process. The experimental results confirmed the filtering of the nanofibres by the fibre bundles and their penetration in the fabric via the inter-bundle channels. Hence, the model is a useful tool for visualising the distribution of the nanofibres in composites in this manufacturing process.

Ort, förlag, år, upplaga, sidor
2016. Vol. 139, artikel-id 012011
Nationell ämneskategori
Kompositmaterial och -teknik
Forskningsämne
Polymera konstruktionsmaterial
Identifikatorer
URN: urn:nbn:se:ltu:diva-59576DOI: 10.1088/1757-899X/139/1/012011ISI: 000392730000011Scopus ID: 2-s2.0-84989329177OAI: oai:DiVA.org:ltu-59576DiVA, id: diva2:1033540
Konferens
37th Risø International Symposium on Materials Science, 5 - 8 September 2016, Technical University of Denmark Risø Campus, Roskilde
Anmärkning

2017-02-23 (andbra);Konferensartikel i tidskrift

Tillgänglig från: 2016-10-07 Skapad: 2016-10-07 Senast uppdaterad: 2018-07-10Bibliografiskt granskad

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Aitomäki, YvonneWestin, MikaelOksman, Kristiina

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