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建筑材料的表面火焰传播分级是指材料在特定燃烧条件下,表面火焰的传播速度的分级,是材料燃烧性能的一个指标。它适用于比较各种建筑材料表面火焰传播的快慢程度,但不作为建筑材料燃烧特性评价的唯一标准。现将此方法作如下介绍:
Surface flame propagation classification of building materials refers to the grading of the propagation velocity of a surface flame under certain combustion conditions and is an indicator of the material’s combustion performance. It is suitable for comparing the extent of flame propagation on the surface of various building materials, but not as the only criterion for evaluating the combustion characteristics of building materials. Now this method is described as follows: