Abstract: In response to the problem that most existing fire doors only have fire prevention functions and the household door industry lacks green and environmentally friendly entrance doors that integrate fire prevention, theft prevention, smoke prevention, and aesthetic functions, a new type of door core material has been developed and selected. On the basis of ensuring its excellent fire resistance performance, the material's green and environmentally friendly, non-toxic and harmless properties are highlighted, and a typical structure is developed. Advanced processing technology is used to design entrance doors that have fire prevention, theft prevention, and smoke prevention functions at the same time. This study conducted combustion tests on the core materials, core structures, and finished doors, as well as numerical simulations of fire doors with specific structures. The results indicate that the entrance door can fully meet the standard requirements for key indicators such as fire resistance and insulation (≥1.5 hours, average temperature rise at the unexposed side≤140 ℃), fire integrity (no flames or cracks at the unexposed side), durability of repeated opening and closing, smoke resistance, and theft prevention.

Key words: entrance door, fire prevention, smoke prevention, numerical simulation