02129nab a2200253 4500 20260520004608.0 260224s2018 xxu ing Inglés Effects of external radiation heat flux on combustion characteristics of pure and oil-impregnated transformer insulating paperboard sept. 2018 04/11/2020 ; 04/11/2020 7 p. ; 362-368 The effects of external radiation heat flux on the combustion characteristics of pure transformer insulating paperboard (PTIP) and oil-impregnated transformer insulating paperboard (OITIP) were investigated experimentally. The experiments were conducted with the cone calorimeter using five external radiation heat fluxes that ranged from 25 to 80 kW/m2. The results showed that the ignition time decreased with the external radiation heat flux, and the ignition time of PTIP was much longer than that of OITIP. Both the PTIP and OITIP are thermal thick materials, and the critical radiation heat flux of the PTIP was larger than that of the OITIP. For the PTIP, the peak of the heat release rate (HRR) and toxic gas productions had no significant difference, while those of the OITIP increased with the external radiation heat flux. The HRR peak of the PTIP was larger than that of the OITIP with the external radiation heat fluxes of 25, 35, 50, and 65 kW/m2. When the radiation heat flux increased to 80 kW/m2, the HRR peak of the OITIP became higher. From the perspective of the CO production rate, the hazard of PTIP fires was more severe than that of OITIP fires under the external radiation heat fluxes of 25 and 35 kW/m2. The CO production rate of the PITP was lower than that of the OITP with the high external radiation heat fluxes of 50, 65 and 80 kW/m2 3 Process safety progress ARTICULO Zhang, Jiaqing 54789 Zhang, Bosi 55540 Fan, Minghao 59822 Wang, Liufang 59823 Ding, Goucheng 59824 Tian, Yu 59825 193699 193699 0 0 0 0 261418 BAAB BAAB 2026-03-06 200066064 0 200066064 2026-03-06 00:38:40 2026-03-06 ARTICULO