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Novel Applications of Nanocellulose: Lightweight Sandwich Composites for Transportation
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
University of Toronto.
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.ORCID-id: 0000-0003-4762-2854
2015 (engelsk)Inngår i: Reference module in materials science and materials engineering / [ed] Saleem Hashmi, Amsterdam: Elsevier, 2015Kapittel i bok, del av antologi (Fagfellevurdert)
Abstract [en]

This chapter is focusing on improvement of the mechanical properties of bio-polyurethane (PU) foam by reinforcing the pre-resin with cellulose nanofibers (CNF). The prepared foam performance was evaluated by manufacturing lightweight sandwich panels using vacuum infusion process with CNF-reinforced bio-PU foam core. Cellulose fiber network (kraft paper) was used as a skin and epoxy resin was used as adhesive resin. The sandwich was tested and compared to a non-reinforced PU foam core sandwich in terms of compressive, flexural, and structural properties. The results showed that the CNF-reinforced foam resulted in sandwich panel with improved mechanical properties, and to foam with smaller cell size and lower open cell content. Moreover, the results were evaluated in a material selection process by means of minimizing merit indices. A trend in the behavior of compressive properties of the foam and flexural properties of the sandwich panels could be established. Overall, the results indicated that the mechanical properties of bio-PU foam was improved by reinforcing the pre-resin with small amounts of wet carrot CNF.

Ultimately, this work shows a positive trend suggesting CNF-reinforced bio-PU foam has a great potential for use in commercialized products or structural components in future constructions.

sted, utgiver, år, opplag, sider
Amsterdam: Elsevier, 2015.
HSV kategori
Forskningsprogram
Trä och bionanokompositer
Identifikatorer
URN: urn:nbn:se:ltu:diva-63117DOI: 10.1016/B978-0-12-803581-8.10013-XISBN: 978-0-12-803581-8 (digital)OAI: oai:DiVA.org:ltu-63117DiVA, id: diva2:1090310
Tilgjengelig fra: 2017-04-24 Laget: 2017-04-24 Sist oppdatert: 2018-01-12bibliografisk kontrollert

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