皮革.色牢度试验.试验的一般原则

[中文适用范围]： 本文件规定了皮革色牢度评估测试的一般原则，如附录 A 中所列。 本文件中包含的程序对于大多数色牢度测试方法来说是通用的。 本文件为测试和报告色牢度提供了通用基础。 指出了方法的用途和局限性，定义了几个术语，给出了方法的起草概要，并讨论了描述方法的条款的内容。 简要讨论了许多方法的通用程序。 色牢度是指颜色对这些材料在制造和后续使用过程中可能接触的不同试剂的耐受性。 皮革颜色的变化以及未染色的相邻织物或其他材料的染色被评估为牢度等级。 测试中皮革的其他可见变化，例如表面外观、光泽度或收缩率的变化，被视为单独的性能并按此报告。 皮革牢度测试方法不仅可用于评估皮革及相关材料，例如涂层皮革和皮革板，还可用于最终评估皮革染料的色牢度。 当使用这种方法时，通过规定的程序以规定的颜色深度将染料施用于特定的复鞣皮革或坯革，然后以通常的方式测试材料。 [外文原描述]： This document specifies general principles on colour fastness evaluation tests for leather, as listed in Annex A. Procedures included in this document are common to most of the fastness test methods. This document provides a common basis for testing and reporting colour fastness. The uses and limitations of the methods are pointed out, several terms are defined, an outline of the drafting of the methods is given and the contents of the clauses describing the methods are discussed. Procedures common to a number of the methods are discussed briefly. Colour fastness means the resistance of the colour to the different agents to which these materials can be exposed during manufacture and their subsequent use. The change in colour of leather and staining of undyed adjacent fabrics or other materials are assessed as fastness ratings. Other visible changes in the leather under test, for example surface appearance, change in gloss or shrinkage, are considered as separate properties and reported as such. The leather fastness test methods can be used not only for assessing leather and related materials, such as coated leather and leather board, but also for the eventual assessment of the colour fastness of leather dyes. When such a method is so used, the dye is applied to a specified retanned leather or crust leather in defined depths of colour by stated procedures and the material is then tested in the usual way.