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Morphology of Burned Ultra-low Density Fiberboards
Fujian Agriculture and Forestry University, Fuzhou, China.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Wood Science and Engineering.ORCID iD: 0000-0001-5872-2792
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Wood Science and Engineering.ORCID iD: 0000-0001-8404-7356
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Wood Science and Engineering.ORCID iD: 0000-0002-7711-9267
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2015 (English)In: BioResources, ISSN 1930-2126, E-ISSN 1930-2126, Vol. 10, no 4, 7292-7301 p.Article in journal (Refereed) Published
Abstract [en]

The synergistic effect of two fire retardants, a Si-Al compound and chlorinated paraffin, was tested on ultra-low density fiberboards (ULDFs). To further understand the mechanism of fire retardancy, morphologies of unburned and burned ULDFs were studied using a scanning electron microscope with energy dispersive spectroscopy. It was found that as the volume of the burned ULDFs shrank, some crevices appeared. In addition, less fly ash formed on the top of specimens, and more bottom ashes remained in the original framework, with a clear network of structure built by the fibers. Carbon was almost absent in the fly ash; however, the weight ratio of C in the bottom ashes reached the maximum (> 43%) of the composition. Oxygen, Al, and Si appeared to have varying weight ratios for different ashes. Oxygen content increased with increasing Si and Al contents. Furthermore, Cl sharply decreased to less than 1% after combustion. Therefore, upon combustion, it was found that almost all of the substances in ULDFs, except for the Si-Al compound, were pyrolyzed to volatile carbon oxides and Cl compounds, especially the fly ash and lightweight C compounds.

Place, publisher, year, edition, pages
2015. Vol. 10, no 4, 7292-7301 p.
Keyword [en]
Technology - Bioengineering, Materials science - Other material science
Keyword [sv]
Teknikvetenskap - Bioteknik, Teknisk materialvetenskap - Övrig teknisk materialvetenskap
National Category
Other Mechanical Engineering
Research subject
Wood Science and Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-14921Local ID: e5bd77b5-3339-4c40-9e5d-9438152f632bOAI: oai:DiVA.org:ltu-14921DiVA: diva2:987894
Note

Validerad; 2015; Nivå 2; 20150827 (aliwan)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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fulltext(978 kB)30 downloads
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Type fulltextMimetype application/pdf

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Wang, Xiaodong (Alice)Hagman, OlleKarlsson, Olov
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