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Fire-Retardation Properties of Polyurethane Nanocomposite by Filling Inorganic Nano Flame Retardant  

Son, Bok-Gi (Department of Chemical and Biological Engineering, College of Engineering, Chungnam National University)
Hwang, Taek-Sung (Department of Chemical and Biological Engineering, College of Engineering, Chungnam National University)
Goo, Dong-Chul (Dangjin Fire-Station, National Emergency Management)
Publication Information
Polymer(Korea) / v.31, no.5, 2007 , pp. 404-409 More about this Journal
Abstract
Polyurethane nanocomposites with inorganic nano fillers for the improvement thermal stability were prepared by the urethane reaction. Fire retardation properties of polyurethane nanocomposites were investigated by cone calorimeter and limited oxygen index (LOI). Maximum heat release rate of MMT-PU and $Bi_2O_3-PU$ polyurethane nanocomposites were decreased as 50% than polyurethane matrix and fire retardation properties of $MMT/Bi_2O_3-PU$ nanocomposte had the best improvement. The LOI of polyurethane nanocomposites also were improved as filling fillers in the nanocomposites over 20. The maximum heat release rates of MMT-PU, $Bi_2O_3-PU\;and\;MMT/Bi_2O_3-PU$ polyurethane nanocomposites were 764, 707, $635kW/m^2$, respectively and $MMT/Bi_2O_3-PU$ polyurethane nanocomposite exhibited the highest value of fire-retardant. We confirmed that polyurethane nanocomposites improved the fire retardation properties.
Keywords
polyurethane; fire-retardation; inorganic nano filler; cone calorimeter;
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