Evaluation of Combustion Gas for Carbon Oxide of Wood Coated with Bis-(dialkylaminoalkyl) Phosphinic Acids Additives

초록

This study examined the generation of combustion toxic gases of pinus rigida specimens processed with bis-(dimethylaminomethyl)phosphinic acid (DMDAP), bis-(diethylaminomethyl) phosphinic acid (DEDAP), and bis-(dibutylaminomethyl)phosphinic acid (DBDAP). Each pinus rigida plate was coated three times with 15 wt.% flame retardants in anaqueous solution. The specimens were then dried at room temperature. The production of combustion toxic gases wasinvestigated using a cone calorimeter (ISO 5660-1). The first time to peak mass loss rate (1st-TMLRpeak) processed withthe chemical additives decreased to 5.9 from 41.2% compared with the unprocessed specimen. The second time to thepeak mass loss rate (2nd-TMLRpeak) for the processed specimens was decreased 1.8% for DMDAP and 5.3% for DBDAPand increased 1.8% for DEDAP. The peak carbon monoxide (COpeak) production was 1.5 to 2.0 times higher than that ofthe unprocessed plate. The peak carbon dioxide (CO2peak) production was reduced 0.01 times for DMDAP and increased1.15 to 1.19 times for DEDAP and DBDAP compared with the unprocessed specimens. In particular, the oxygen concentrationwas much higher than 15%, which can be fatal to humans and the resulting hazard can be eliminated. Overall, thecombustion toxicity of flammable gas were increased partially by the chemical additives compared with those of theunprocessed plate.

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