一、岩棉防火隔离带的作用

1、 The function of rock wool fireproof isolation belt

岩棉防火隔离带是用岩棉保温板作为防火隔离构造安装在建筑层之间的防火阻断隔离设施。岩棉板本身是一种无机不燃的外墙保温隔热材料，岩棉防火隔离带可以有*效阻隔火焰和燃烧热浪的传播扩散，遏制火灾大面积延烧，起着保护建筑内生命与财产的功能作用。

Rock wool fire isolation belt is a fire blocking isolation facility installed between building floors using rock wool insulation boards as fire isolation structures. Rock wool board itself is an inorganic non combustible external wall insulation material. Rock wool fire isolation belts can effectively block the spread of flames and combustion heat waves, curb the widespread spread of fires, and play a role in protecting life and property inside buildings.

二、岩棉防火隔离带的标准及要求

2、 Standard and requirements for rock wool fire isolation belts

岩棉防火隔离带的厚度应为6厘米，高度应为50厘米，一般安装在建筑一三五楼层顶以及二四六楼层窗口下的位置。按照有关部门要求，当住宅建筑高度≤24米，采用B2防火等级的建筑外墙材料时，建筑每3层应设置防火隔离带；当住宅建筑高度24≤h<60米，采用B2防火等级的建筑外墙材料时，建筑每2层应设置防火隔离带；当住宅建筑高度60≤h<100米，采用B2防火等级的建筑外墙材料时，建筑每1层应设置防火隔离带；当其他民用建筑的高度≤24米，采用B2防火等级建筑外墙材料时，建筑每1层应设置防火隔离带；当幕墙式建筑高度为0-24米， 采用B1防火等级建筑材料时，每层应设置防火隔离带。

The thickness of the rock wool fireproof isolation belt should be 6 centimeters, and the height should be 50 centimeters. It is generally installed at the top of the first, third, and fifth floors of the building, as well as under the windows of the second, fourth, and sixth floors. According to the requirements of relevant national departments, when the height of residential buildings is ≤ 24 meters and B2 fire rated building exterior wall materials are used, fire isolation belts should be installed every 3 floors of the building; When the height of residential buildings is 24 ≤ h<60 meters and B2 fire rated building exterior wall materials are used, fire isolation belts should be installed every 2 floors of the building; When the height of residential buildings is 60 ≤ h<100 meters and B2 fire rated building exterior wall materials are used, fire isolation belts should be installed on every floor of the building; When the height of other civil buildings is ≤ 24 meters and B2 fire rated building exterior wall materials are used, fire isolation belts should be installed on every floor of the building; When the height of curtain wall style buildings is 0-24 meters and B1 fire rated building materials are used, fire isolation belts should be installed on each floor.

三、做防火隔离带的岩棉标准

3、 Standard for rock wool for making fire isolation belts

作为防火隔离带，岩棉须满足A级不燃的防火等级；其次原材料应为玄武岩岩棉，矿渣棉不能作为隔离防火带；zui后岩棉板的规格应符合要求，岩棉防火隔离带的容重原则上要求不低于80K，也就是说做防火隔离带的岩棉的密度每立方应该大于80公斤的标准。

As a fire isolation zone, rock wool must meet the A level non combustible fire rating; Secondly, the raw material should be basalt rock wool, and slag wool cannot be used as an isolation fireproof belt; The specifications of the Zui rear rock wool board should meet the requirements. The bulk density of the rock wool fireproof isolation belt should be no less than 80K, which means that the density of the rock wool used for fireproof isolation belts should be greater than the standard of 80 kilograms per cubic meter.