The optimum level of nano-wollastonite consumption as fire-retardant in poplar wood (populus nigra)
作者： POSHTIRI A HAGHIGHI , HAMID REZA TAGHIYARI , KARIMI A NAGHI , None
关键词: Swelling 、 Nanofiber 、 Mass transfer 、 Wollastonite 、 Fire retardant 、 Carbonization 、 Composite material 、 Materials science 、 Phase (matter) 、 Absorption of water
摘要: Fire-retarding properties of wollastonite nanofibers in poplar wood (Populus nigra) were studied here. Some physical such as water absorption, volumetric swelling and anti-swelling efficiency (ASE) also measured. Specimens prepared according to the ISO 11925 specifications for fire-retarding ASTM D4446 -2002 properties. Impregnation specimens with nanowollastonite was carried out at consumption levels 4, 6.3, 10 12%, using Rueping Method (empty-cell process) compared control specimens. Five fireretarding measured, including weight loss (%), ignition point (s), fire endurance glow (s) carbonization area (%). The obtained results indicated that significantly improved NW-treated Furthermore, NW-impregnated gained higher dimensional stability. However, absorption increased. Heat-conductivity limited accumulation heat one spot, furthermore, it acted a barrier deter mass transfer between gas condensed phase, consequently, improved.
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