中文摘要：

内部嵌入高温金属颗粒的可燃材料受热后可能会发生点燃现象,而高温颗粒与材料之间边界的传热条件对点燃机理有重要影响.同时考虑高温金属颗粒与可燃材料间的接触热阻和可燃物燃尽效应对点燃现象的影响,通过控制变量法研究了不同颗粒尺寸、颗粒初始温度、材料化学反应热和接触热阻下的可燃材料点燃机理,发现了不同条件下材料的5种点燃现象：未点燃、一次闪燃后熄灭、一次闪燃后稳定点燃、未经过闪燃而直接稳定点燃和两次闪燃后稳定点燃.

英文摘要：

Combustible materials embedding a hot metal particle are prone to be ignited and the ignition mechanism is significantly affected by the heat transfer boundary between the materials and hot particles. This paper explores the effects of thermal contact resistance between the hot particles and materials and the material burnout on the ignition mechanism. By studying the ignition mechanism at different particle sizes,initial particle temperature,heat release rate of materials and thermal contact resistance,this paper found five ignition mechanisms,which are respectively non-ignition,extinguishing after one flash,stable ignition with one flash,stable ignition without flash,and stable ignition with double flashes.