1. Is aluminum composite panel a fireproof material?
At present, most of the aluminum composite panels on the market are fireproof materials. The fireproof grade of the aluminum-plastic panels is B1, not a fire-proof material, because there is usually a layer of paste between the PE material and the aluminum inside the aluminum-plastic panel Film, and this layer of film is generally combustible, so aluminum-plastic panels generally cannot reach the non-combustible Class A fireproof material.
2. What is the fire rating of aluminum composite panels?
Aluminum composite panels are classified as Class B1 fireproof materials.
The fire rating of aluminum composite panels is determined by two indicators, which are the national compulsory standard GB8624 “Classification Method for the Combustion Performance of Building Materials” and GB/T17748 “Aluminum Composite Panel”.
The grade of fire-resistant aluminum composite composite panel cannot be lower than B1, which is a flame-retardant building material. Class B1 flame-retardant building materials: flame-retardant materials have a good flame retardant effect. It is difficult to catch fire in the air or under the action of high temperature, it is not easy to spread quickly, and the combustion stops immediately when the fire source is removed.
Test indicators and requirements for fireproof aluminum-plastic panels (level B1)
(1) Test according to GB/T8625-88, the average remaining length of each group of test pieces is ≥150mm, (the remaining length of any test piece is ＞0), and the peak average flue gas temperature of each test is ≤200℃.
(2) Test according to GB/T8626-88, the height index of the flame tip is less than 150mm, and it is not allowed to ignite the filter paper by burning drips.
(3) Test according to GB/T8627-1999, smoke density grade (SDR) ≤75.