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

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

이 연구는 비스-(디메틸아미노메틸) 포스핀산(DMDAP), 비스-(디에틸아미노메틸) 포스핀산(DEDAP) 과 비스-(디부틸아미노메틸) 포스핀산(DBDAP)으로 처리된 리기다소나무의 연소 독성 가스의 생성에 관하여 조사하였다. 리기다소나무는 15 wt.% 방염제 수용액으로 3번 붓칠 한 후 상온에서 건조하였다. 연소 독성 기체의 생성물은 콘칼로리미터(ISO 5660-1)를 사용하여 조사하였다. 화학 첨가제로 처리된 첫 번째 피크 질량손실속도(<TEX>$1^{st}-TMLR_{peak}$</TEX>) 시간은 처리하지 않은 시편과 비교하여 5.9%와 41.2% 범위에서 감소되었다. 두 번째 피크 질량손실속도(<TEX>$2^{nd}-TMLR_{peak}$</TEX>) 시간은 DMDAP에 대해서 1.8%, DBDAP에 대해서 5.3% 감소하였고 DEDAP에 대하여 1.8% 증가하였다. 피크 일산화탄소 생성농도(<TEX>$CO_{peak}$</TEX>)는 처리되지 않은 시편보다 1.5~2.0배 더 높았다. 피크 이산화탄소 생성 농도(<TEX>$CO_{2peak}$</TEX>)는 처리되지 않은 시편과 비교하여 DMDAP에 대해 0.01배 감소되었고 DEDAP에 대해 1.15배, DBDAP에 대해 1.19배 증가하였다. 특히 산소농도는 사람에게 치명적인 15%보다 매우 높게 측정되었다. 전반적으로 가연성 기체의 연소 독성은 처리하지 않은 시편과 비교하여 화학 첨가제에 의해 부분적으로 증가하였다.

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 an aqueous solution. The specimens were then dried at room temperature. The production of combustion toxic gases was investigated using a cone calorimeter (ISO 5660-1). The first time to peak mass loss rate (<TEX>$1^{st}-TMLR_{peak}$</TEX>) processed with the chemical additives decreased to 5.9 from 41.2% compared with the unprocessed specimen. The second time to the peak mass loss rate (<TEX>$2^{nd}-TMLR_{peak}$</TEX>) for the processed specimens was decreased 1.8% for DMDAP and 5.3% for DBDAP and increased 1.8% for DEDAP. The peak carbon monoxide (<TEX>$CO_{peak}$</TEX>) production was 1.5 to 2.0 times higher than that of the unprocessed plate. The peak carbon dioxide (<TEX>$CO_{2peak}$</TEX>) production was reduced 0.01 times for DMDAP and increased 1.15 to 1.19 times for DEDAP and DBDAP compared with the unprocessed specimens. In particular, the oxygen concentration was much higher than 15%, which can be fatal to humans and the resulting hazard can be eliminated. Overall, the combustion toxicity of flammable gas were increased partially by the chemical additives compared with those of the unprocessed plate.