ISO 4589-4:2021 塑料 用氧指数测定燃烧性能 第4部分：高气体速度试验

标准编号：ISO 4589-4:2021

中文名称：塑料 用氧指数测定燃烧性能 第4部分：高气体速度试验

英文名称：Plastics — Determination of burning behaviour by oxygen index — Part 4: High gas velocity test

发布日期：2021-04

标准范围

本文件规定了一种试验方法，用于在环境温度下测定与氮气混合的氧气的最小体积分数，该方法支持在高于ISO？4589-2规定的规定气体速度下燃烧小型垂直板试样。注？结果用高气速氧指数（HOI）表示。此外，本文件规定了用于测定HOI的试验装置。本试验方法适用于厚度不超过2mm的板材。它也适用于由指定试样夹垂直支撑的柔性板材。

This document specifies a test method for determining the minimum volume fraction of oxygen, in admixture with nitrogen, at ambient temperature, that supports combustion of small vertical sheet test specimen under a specified gas velocity that is higher than that specified in ISO 4589-2.NOTE            The result is expressed as a high gas velocity oxygen index (HOI).In addition, this document specifies the testing apparatus for determining the HOI.The test method is applicable to materials in the form of sheets up to 2 mm thick. It is also applicable to flexible sheet materials that are supported vertically by a specified specimen holder.

标准预览图