ISO 247-1:2018 橡胶 灰分的测定 第1部分：燃烧法

标准编号：ISO 247-1:2018

中文名称：橡胶 灰分的测定 第1部分：燃烧法

英文名称：Rubber — Determination of ash — Part 1: Combustion method

发布日期：2018-07

标准范围

本文件规定了三种测定生胶、复合橡胶和硫化胶灰分的方法。这些方法适用于ISO 1629中所述M、N、O、R和U系列的生橡胶、复合橡胶或硫化橡胶，但以下情况除外:-方法A不用于测定含有氯、溴或碘的复合或硫化橡胶中的灰分；-方法B用于含有氯、溴或碘的复合或硫化橡胶。不得用于未经粘合的橡胶；-方法C旨在通过用无灰滤纸包裹试样，测定不含氯、溴或碘的生橡胶、复合橡胶或硫化橡胶中的灰分；-锂和氟化合物可能与硅坩埚反应形成挥发性化合物，从而产生低灰分结果。因此，应使用铂坩埚灰化含氟和锂聚合橡胶。本文件不包括灰分结果对化合物或硫化胶无机化学成分的解释。这是分析员的责任，分析员必须了解橡胶添加剂在高温下的行为。

This document specifies three methods for the determination of ash from raw rubbers, compounded rubbers and vulcanizates. The methods are applicable to raw, compounded or vulcanized rubbers of the M, N, O, R and U families described in ISO 1629, except that:— Method A is not used for the determination of ash from compounded or vulcanized rubbers containing chlorine, bromine or iodine;— Method B is used for compounded or vulcanized rubbers containing chlorine, bromine or iodine. It shall not be used for uncompounded rubbers;— Method C is intended to be used for the determination of ash from raw, compounded or vulcanized rubber not containing chlorine, bromine or iodine by wrapping the test portion in ashless filter paper;— Lithium and fluorine compounds might react with silica crucibles to form volatile compounds, giving low ash results. Platinum crucibles shall therefore be used for ashing fluorine-containing and lithium-polymerized rubbers.This document does not cover the interpretation of the ash results as to the inorganic chemical content of a compound or vulcanizate. This is the responsibility of the analyst, who has to be aware of the behaviour of rubber additives at elevated temperatures.

标准预览图