标准摘要
[中文适用范围]： 本标准规定了生胶、混炼胶和硫化胶中灰分的三种测定方法。 这些方法适用于 ISO 1629 中描述的 M、N、O、R 和 U 族的生橡胶、混炼橡胶或硫化橡胶，但以下情况除外： ——方法 A 不适用于含氯混炼橡胶或硫化橡胶的灰分测定，溴或碘； ——方法 B 用于含氯、溴或碘的复合或硫化橡胶。 不得用于未混炼的橡胶； ——方法C用于测定不含氯、溴或碘的生橡胶、混炼橡胶或硫化橡胶中的灰分，将测试部分包裹在无灰滤纸中； ——锂和氟化合物可能与二氧化硅坩埚发生反应，形成挥发性化合物，从而产生低灰分结果。 因此，铂坩埚应用于灰化含氟橡胶和锂聚合橡胶。 本文件不包括对化合物或硫化橡胶的无机化学含量的灰分结果的解释。 这是分析师的责任，他们必须了解橡胶添加剂在高温下的行为。 [外文原描述]： 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.
英文名称Rubber — Determination of ash — Part 1: Combustion method