标准摘要
[中文适用范围]： 本国际标准规定了测定未加工未共聚苯乙烯嵌段橡胶（SBR）和未加工未共聚苯乙烯嵌段橡胶混合物中长链聚苯乙烯块含量的方法。该方法不适用于与EPDM、IIR、CSM和其他卤化橡胶共混的苯乙烯嵌段橡胶。本方法适用于上述组成的未加工胶乳，且适用于苯乙烯嵌段含量在5%（按重量计）到100%（按重量计）之间的橡胶。苯乙烯嵌段含量小于5%（按重量计）的橡胶可能会产生错误结果，除非应用基于与这种橡胶一起工作所获得的信息的校正因子。本方法适用于无凝胶橡胶，但也可用于含有凝胶的橡胶，前提是已证明凝胶不影响测定。 [外文原描述]： ISO 6235:2016 specifies a method for the determination of the long polystyrene block content of raw uncompounded styrene-butadiene rubber (SBR) and raw uncompounded blends of block SBR. It is not applicable to blends of block SBR with EPDM, IIR, CSM and other halogenated rubbers. The method is applicable to raw, uncompounded latices of the above compositions and is suitable for rubbers having block polystyrene contents in the range from 5 % (by weight) to 100 % (by weight). Rubbers having block polystyrene contents of less than 5 % (by weight) may yield incorrect results unless a correction factor, based on information gained by working with such rubbers, is applied. The method is intended for use on gel-free rubbers, but it may be used on rubbers containing gel if it has been proved that the gel does not interfere.
英文名称Rubber, raw — Determination of block polystyrene content — Ozonolysis method