Reaction-to-fire tests — Heat release, smoke production and mass loss rate — Part 1: Heat release rate (cone calorimeter method) and smoke production rate (dynamic measurement)
反火试验 - 放热 烟雾产生和质量损失率 - 第1部分:热释放速率(锥形量热法)和烟雾产生率(动态测量)
发布日期:
2015-03-20
ISO 5660-1:2015规定了用外部点火器评估水平方向暴露在受控辐照度水平下的试样的热释放率和动态烟雾产生率的方法。通过测量氧浓度和燃烧产物流中的流速得出的耗氧量来确定热释放速率。点火时间(持续燃烧)也在本测试中测量。
通过测量燃烧产物流对激光束的衰减来计算动态烟雾产生率。在整个试验过程中,无论试样是否燃烧,都会记录烟雾遮蔽情况。
ISO 5660-1:2015 specifies a method for assessing the heat release rate and dynamic smoke production rate of specimens exposed in the horizontal orientation to controlled levels of irradiance with an external igniter. The heat release rate is determined by measurement of the oxygen consumption derived from the oxygen concentration and the flow rate in the combustion product stream. The time to ignition (sustained flaming) is also measured in this test.
The dynamic smoke production rate is calculated from measurement of the attenuation of a laser light beam by the combustion product stream. Smoke obscuration is recorded for the entire test, regardless of whether the specimen is flaming or not.