초록

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Abstract ▼ AI-Helper

In this study, a reproduction experiment was conducted to identify the ignition probability of electric mats and pads(single and double). In the reproduction experiment, heating and heat storage temperature, ignition characteristics of each part and external flame-based carbonization forms were obse...

In this study, a reproduction experiment was conducted to identify the ignition probability of electric mats and pads(single and double). In the reproduction experiment, heating and heat storage temperature, ignition characteristics of each part and external flame-based carbonization forms were observed. As a result, when power was supplied with no temperature controller, the electric pads were ignited at a temperature of $150^{\circ}C$ degrees, the maximum temperature of the electric mats increased to $40^{\circ}C$ to $60^{\circ}C$ degrees after nearly 20 minutes without an ignition phenomenon and the maximum temperature of the electric pads was $40^{\circ}C$ to $150^{\circ}C$ degrees after nearly 30 minutes. When they were covered with blankets, also, the temperature was 74 degrees, which was about 20 degrees higher than $43^{\circ}C$ degrees when they were not covered with blankets. Hardened carbonization forms were observed and the top was burnt widely, whereas the bottom was burnt narrowly. The ignition post of each material was between $338^{\circ}C$ degrees and $560^{\circ}C$ degrees and especially, heat-insulting materials of the electric mats began to be ignited at a temperature of $338^{\circ}C$ degrees. This means they have a relatively higher ignition hazard.

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