ISO 5478:2006 橡胶 苯乙烯含量的测定 硝化法

标准编号：ISO 5478:2006

中文名称：橡胶 苯乙烯含量的测定 硝化法

英文名称：Rubber — Determination of styrene content — Nitration method

发布日期：2006-10

标准范围

ISO 5478:2006规定了测定所有类型丁苯橡胶（SBR）中苯乙烯含量的方法，包括充油类型。该方法适用于苯乙烯均聚物增强的丁苯橡胶，以给出总苯乙烯含量。该方法也适用于测定苯乙烯含量高达50%（按质量计）的嵌段共聚物中的苯乙烯。本标准适用于丁苯橡胶与其他聚合物（NR、BR、IR和CR）混合物的硫化胶，如果丁苯橡胶中的苯乙烯含量已知且没有其他苯乙烯，则本标准被视为估算混合物中丁苯橡胶含量的方法-包含材料的材料存在。在指定光谱区域吸收的任何其他不可萃取的芳香物质将干扰该方法。当不溶于硝酸的矿物填料含量超过5%（按质量计）时，该程序可能会产生较低的结果。

ISO 5478:2006 specifies a method for the determination of the styrene content of all types of styrene-butadiene rubber (SBR), including oil-extended types.The method is applicable to styrene-butadiene rubbers reinforced with styrene homopolymer, to give the total styrene content. The method is also applicable for determining the styrene in block copolymers containing up to 50 % (by mass) of styrene.It is applicable to vulcanizates of mixtures of SBR with other polymers (NR, BR, IR and CR) and is considered a method for estimating the SBR content of mixtures, if the styrene content of the SBR is known and provided that no other styrene-containing materials are present.Any other non-extractable aromatic material which absorbs in the specified spectral region will interfere with this method.The procedure may give low results when the content of mineral fillers insoluble in nitric acid exceeds 5 % (by mass).

标准预览图