ISO 11235:2023 橡胶配合剂 次磺酰胺促进剂 试验方法

标准编号：ISO 11235:2023

中文名称：橡胶配合剂 次磺酰胺促进剂 试验方法

英文名称：Rubber compounding ingredients — Sulfenamide accelerators — Test methods

发布日期：2023-07

标准范围

本文件规定了用于亚磺酰胺促进剂评价的方法:—？MBTS:苯并噻唑二硫化物；—？CBS:N-环己基苯并噻唑-2-亚磺酰胺；—？TBBS:N-叔丁基苯并噻唑-2-亚磺酰胺；—？DIBS:N，N′-二异丙基苯并噻唑-2-亚磺酰胺；—？DCBS:N，N′-二环己基苯并噻唑-2-亚磺酰胺；—？MBS:N-氧二亚乙基苯并噻唑-2-亚磺酰胺。注1？虽然MBTS不是亚磺酰胺，但它是这些促进剂的主要分解产物，并通过5.2中规定的方法定量测定。分析方法适用于大多数商业亚磺酰胺促进剂:—？伯胺的亚磺酰胺(I型)；—？无阻碍仲胺的亚磺酰胺(II型)；—？受阻仲胺的亚磺酰胺（III型）。注2？亚磺酰胺促进剂的分类和关键性能见附录？A.通过高效液相色谱法（HPLC）测定纯度的方法（5.2）是优选的方法。

This document specifies the methods to be used for the evaluation of sulfenamide accelerators:

—     MBTS: benzothiazyl disulphide;

—     CBS: N-cyclohexylbenzothiazole-2-sulfenamide;

—     TBBS: N-tert-butylbenzothiazole-2-sulfenamide;

—     DIBS: N,N'-diisopropylbenzothiazole-2-sulfenamide;

—     DCBS: N,N'-dicyclohexylbenzothiazole-2-sulfenamide;

—     MBS: N-oxydiethylenebenzothiazole-2-sulfenamide.

NOTE 1        Although MBTS is not a sulfenamide, it is the primary decomposition product of these accelerators and quantitatively determined by the method specified in 5.2.

The analytical methods are applicable for most commercial sulfenamide accelerators:

—     sulfenamides of primary amines (type I);

—     sulfenamides of unhindered secondary amines (type II);

—     sulfenamides of hindered secondary amines (type III).

NOTE 2        Classification and key properties of sulfenamide accelerators are described in Annex A.

The method (5.2) to determine purity by high performance liquid chromatography (HPLC) is the preferred method.

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