结合相关国家标准与规范,对被动防火中主要的防火封堵技术的发展和分类进行了介绍和讨论;着重从防火封堵系统的角度介绍了采用防火封堵材料对空开口、贯穿孔口进行密封保护,对建筑缝隙进行填塞保护,以及对通风管道系统的包裹保护的先进技术。 Combined with relevant national standards and norms, the introduction and discussion of the development and classification of the main fire blocking technology in passive fire prevention are introduced and discussed. From the point of view of fire blocking system, the introduction of fire blocking material to the empty opening and through the orifice Seal protection, padding protection for building gaps, and advanced technology for package protection of ventilation ductwork.