TY - EJOUR
AU - Poshtiri, A. Haghighi
AU - Taghiyari, H. R.
AU - Karimi, A. Naghi
PY - 2024
DA - February
TI - The optimum level of nano-wollastonite consumption as fire-retardant in poplar wood (Populus nigra)
T2 - International Journal of Nano Dimension (Int. J. Nano Dimens.)
VL - 4
L1 - https://oiccpress.com/international-journal-of-nano-dimension/article/the-optimum-level-of-nano-wollastonite-consumption-as-fire-retardant-in-poplar-wood-populus-nigra/
DO - 10.7508/ijnd.2013.02.007
N2 - 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.
IS - 2
PB - OICC Press
KW - Poplar wood, Minerals, Nano-wollastonite, Rueping method, Fire-Retarding Properties, water absorption, anti-swelling efficiency 
EN -