中文摘要：

研究材料的点燃模型对于预防火灾的发生及蔓延具有重要的意义。为了认识热薄型材料在火灾过程中的传热规律，从能量守恒出发，根据杜隆-珀蒂定律将固体的热容量简化为常量，在背面隔热、热损失线性处理和考虑热辐射损失3种情况下分别得到了热薄型材料点燃时间的计算公式，并讨论了点燃时间和热流强度之间的关系。

英文摘要：

Ignition models of tested material have important significance to fire prevention. In order to know heat transfer of thermal thin material in fire disaster, starting from the law of conservation of energy, simplifying heat capacity into a constant according to Dulong- Petit law, and three calculation formulas of ignition time of thermal thin material in a constant heat flux were respectively obtained under the conditions of ignoring heat loss, linear processing heat loss and considering thermal radiation. The relation between the ignition time and the thermal current intensity was discussed.