ISO 4589-2:2017版氧指数试验方法新标准解析

Analysis on the New Standard for Oxygen Index Test Method of ISO 4589-2:2017

国际通用氧指数试验方法ISO 4589-2:2017已于2017年发布实施,新版氧指数试验方法对部分条款进行了修订,将试验过程进行了必要的细化和补充。本文将ISO 4589-2:2017与国内现行的氧指数试验方法GB/T 2406.2-2009进行对比和分析,指出了新版国际标准在仪器设备、设备的校准、状态调节、结果表述等四个方面的技术性变更,针对这些变更提出了实验室的改进措施,为相关检测人员提供帮助和建议。

ISO 4589-2:2017,Plastics-Determination of burning behaviour by oxygen index-Part 2:Ambienttemperature test,has been published and implemented in 2017.The new edition of oxygen index test method has revised some clauses and made necessary refinement and supplement to the test process.This paper compares ISO 4589-2:2017 with the current national oxygen index test method GB/T 2406.2-2009,and points out the technical changes of the new international standard in the four aspects of apparatus,calibration of equipment,conditioning,and expression of results.In view of these changes,it proposes the improvement measures of the laboratory,which provides help and suggestions for the relevant testing personnel.