ISO/TS 5660-5:2020 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）

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

本文件规定了在还原氧环境下测量火灾反应性能的仪器和程序。进行连续测量以计算热释放率、烟雾和特定气体产生率以及质量损失率。还进行了点火时间测量，获得了点火行为。暴露于受控辐照度水平和受控氧气供应水平下的试样的热解参数也可以确定。通过控制进入试验室的输入气体的氧气体积浓度（稀释）或控制进入试验室的大气总体积（通风），可实现试验环境中不同的还原氧环境。可以研究氧气体积浓度低于20,95%的范围。该设备不用于将富氧条件控制在大气20.95%氧浓度以上。本文件中规定的测量系统基于ISO 5660-1中描述的锥形量热计装置。因此，本文件旨在与ISO 5660-1结合使用。

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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