标准编号：ISO/TS 5660-5:2020
中文名称：着火反应试验 放热、产烟和质量损失率 第5部分：在低氧环境下的放热率（锥形量热计法）和产烟率（动态测量）
英文名称：Reaction-to-fire tests — Heat release, smoke production and mass loss rate — Part 5: Heat release rate (cone calorimeter method) and smoke production rate (dynamic measurement) under reduced oxygen at
发布日期：2020-03
标准范围
This document specifies the apparatus and procedure for measuring reaction to fire behaviour under
reduced oxygen atmospheres. Continuous measurements are made to calculate heat release rates,
smoke and specific gas production rates, and mass loss rates. Ignition time measurements are also
made and ignition behaviour is obtained. Pyrolysis parameters of specimens exposed to controlled
levels of irradiance and controlled levels of oxygen supply can be determined as well.
Different reduced oxygen atmospheres in the test environment are achieved by controlling the oxygen volume concentration of input gas fed into the chamber (vitiation) or by controlling the total volume of atmosphere fed into the chamber (ventilation). Ranges of oxygen volume concentration below 20,95 % of oxygen can be studied. The apparatus is not intended to control enriched oxygen conditions above atmospheric 20,95 % oxygen concentration.
The measurement system prescribed in this document is based on the cone calorimeter apparatus
described in ISO 5660-1. Therefore, this document is intended to be used in conjunction with ISO 5660-1.
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