The fire-retarding effect of inorganic phosphorus compounds on the combustion of cellulosic materials |
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Authors: | S Liodakis I K Fetsis and I P Agiovlasitis |
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Institution: | (1) Laboratory of Inorganic and Analytical Chemistry, Department of Chemical Engineering, National Technical University of Athens (NTUA), 9 Iroon Polytechniou Street, Athens, 157 80, Greece |
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Abstract: | The pyrolysis and combustion of cellulosic substances treated with MAP and DAP have been studied using thermal analysis, flame
spread tests and a specifically designed apparatus for smoldering combustion test. The samples used were: cotton string, cotton
fabric and pure cellulose powder. Diammonium Phosphate (DAP) and Monoammonium Phosphate (MAP) can reduce the combustion and
pyrolysis maximum mass loss temperature, decrease the initial pyrolysis temperature and considerably increase mass residue.
Moreover, MAP and DAP reduce the flaming combustion rate of cellulosic materials and completely inhibit smoldering combustion.
This study can facilitate a better understanding of the mechanism of pyrolysis and combustion of fire-retarded cellulosic
materials. |
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