ASTM E84建筑材料表面燃烧特性标准试验方法
日期:2012-02-08 12:07
g the test surface, or secured from the back side.
1.2 The purpose of this test method is to determine the relative burning behavior of the material by observing the flame spread along the specimen. Flame spread and smoke developed index are reported. However, there is not necessarily a relationship between these two measurements.
1.3 The use of supporting materials on the underside of the test specimen has the ability to lower the flame spread index from those which might be obtained if the spe
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