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The optimum level of nano-wollastonite consumption in particleboard
KTH, School of Information and Communication Technology (ICT), Materials- and Nano Physics.
2015 (English)In: Journal of Mechanical Engineering Research and Developments, ISSN 1024-1752, Vol. 37, no 1, 11-21 p.Article in journal (Refereed) Published
Abstract [en]

Fire-retarding properties of wollastonite nanofibers in poplar wood (Populus nigra) were studied here. Some physical properties such as water absorption, volumetric swelling and anti-swelling efficiency (ASE) were also measured. Specimens were prepared according to the ISO 11925 specifications for the fire-retarding properties and according to the ASTM D4446-2002 specifications for the physical properties. Impregnation of wood specimens with nanowollastonite was carried out at consumption levels of 4, 6.3, 10 and 12%, using Rueping Method (empty-cell process) and compared with the control specimens. Five fire-retarding properties were measured, including weight loss (%), ignition point (s), fire endurance (s), glow endurance (s) and carbonization area (%). The obtained results indicated that fire-retarding properties were significantly improved in the NW-treated specimens. Furthermore, the NW-impregnated specimens gained higher dimensional stability. However, water absorption increased. Heat-conductivity of wollastonite limited accumulation of heat at one spot, furthermore, it acted as a physical barrier to deter heat and mass transfer between the gas and the condensed phase, consequently, fire-retarding properties were improved.

Place, publisher, year, edition, pages
2015. Vol. 37, no 1, 11-21 p.
Keyword [en]
Anti-swelling efficiency, Fire-retarding properties, Minerals, Nano-wollastonite, Poplar wood, Rueping method, Water absorption, Carbonization, Fires, Forestry, Mass transfer, Physical properties, Silicate minerals, Specifications, Anti-swelling efficiencies, Consumption levels, Heat and mass transfer, Nano wollastonites, Physical barriers, Poplar woods, Volumetric swelling, Flame Retardants, Heat Transfer, Particle Boards, Populus Nigra, Swelling
National Category
Nano Technology
URN: urn:nbn:se:kth:diva-167787ScopusID: 2-s2.0-84928150363OAI: diva2:813674

QC 20150525

Available from: 2015-05-25 Created: 2015-05-22 Last updated: 2015-05-25Bibliographically approved

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