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2P-632 Smoke generation properties of wood panels painted with flame retardants
진의,정영진 한국공업화학회 2017 한국공업화학회 연구논문 초록집 Vol.2017 No.1
This study was conducted to respect to the smoke generation properties of the Si sol flame retardants. Smoke generation properties were measured using a cone calorimeter (ISO 5660-2) with three kinds of flame retardants. The flame retardants were synthesized with sodium silicate and slane compounds. The external heat flux was maintained at 50 kW/㎡. Mass loss rate(g/s) of all specimens was 0.0235∼0.0305 range and that of Si sol with 3-aminopropyltrimethoxysilane had the smallest value. The total smoke release rate of Si sol with 3-aminopropyltrimethoxysilane was the lowest value as 309.8 m2/㎡ while that of Si sol with N-2-(aminoethyl)-3-aminopropylmethyltrimethoxysilane was the highest value as 593.4 ㎡/㎡. The total smoke production of all specimens was 2.7 ㎡ to 5.3 ㎡ and Si sol with 3-aminopropyltrimethoxysilane was measured in the lowest value. Time to the peak smoke production rate was 15 s to 20 s, appearing in the peak of the first smoke production rate.
CO toxicity characteristics of cypress wood painted with boron flame retardant
진의,정영진 한국공업화학회 2018 한국공업화학회 연구논문 초록집 Vol.2018 No.0
This study was investigated to test the characteristics on generating the toxic gas of building interior materials, especially focusing on CO, which are the leading cause of fire deaths. The quantity of the CO generated was measured by 50 kW/m<sup>2</sup> external heat flux and it was compared to the 50 ppm permissible exposure limit of OSHA. 4 wt% boric acid and ammonium pentaborate were used as flame retardants. The maximum yield of CO<sub>mean</sub> (kg/kg) ranged from 0.064 to 0.070 kg/kg. The flame retardant combined with 4 wt% showed the same value as 0.067 kg/kg of the base wood. The CO toxicity of specimens combined with 4 wt% was found to decrease CO concentration which was 15.6% smaller than that of unpainted wood, 110.88 ppm. This was observed to decrease by 1.9 times compared with the permissible exposure limit of OSHA. The flame retardant combined with 4 wt% was found to decrease CO generation.
Smoke characteristic of wood specimen painted with boron flame retardant
진의,정영진 한국공업화학회 2018 한국공업화학회 연구논문 초록집 Vol.2018 No.0
This study was performed the combustion characteristics of cypress specimen for the constructional interiors, especially focusing on smoke generation characteristics. Smoke production properties were measured using a cone calorimeter (ISO 5660-2). The external heat flux was maintained at 50 kW/m<sup>2</sup>. 4 wt% boric acid and ammonium pentaborate were used as flame retardants. Combination of the two compounds was used to observe the smoke behavior according to the concentration. The total smoke release of 4 wt% boric acid and ammonium pentaborate was 426.47 m<sup>2</sup>/m<sup>2</sup> and 395.40 m<sup>2</sup>/m<sup>2</sup>, respectively. However, the total smoke release rate of the combined specimens was 557.09 m<sup>2</sup>/m<sup>2</sup>, which was 22.8% higher than 453.5 m<sup>2</sup>/m<sup>2</sup> of the base panel. The total smoke production of the combined specimens was 4.93 m<sup>2</sup>, which was 22.7% higher than that of 4.01 m<sup>2</sup> of cypress. The flame retardant combined with 4 wt% was found to increase smoke generation.
Heat hazard of silicone compounds in combustion
진의,정영진 한국공업화학회 2018 한국공업화학회 연구논문 초록집 Vol.2018 No.0
This study was examined the combustion properties of wood specimen for the constructional interiors, especially focusing on heat hazard characteristics. Heat release characteristics were measured by using a cone calorimeter (ISO 5660-1). The external heat flux was maintained at 50 kW/m<sup>2</sup>. Silicone sols were synthesized using 3-aminopropyltrie-thoxysilane and sodium silicate. The heat hazard were measured by varying the concentrations of the two compounds. The concentration of amino silane was adjusted to 0.6, 1.2 and 2.4 times for sodium silicate. The measured HRR<sub>mean</sub> after burning ranged from 46.25 to 52.76 kW/m<sup>2</sup>, which was increased by 1.8% to 16% from 45.44 kW/m<sup>2</sup> of cypress. The total heat release was obtained from 83.27 to 90.70 MJ/kg and observed by 1.6% to 10.6% higher than 81.98 MJ/kg of cypress. Silicone flame retardants have been shown to increase head hazards.