1.1 本规程描述了乳胶漆中作为涂料载体主要成分存在的大多数类型聚合物的定性鉴定程序。限制在第节中讨论 5. 和 10 . 1.2 以国际单位制表示的数值应视为标准。括号中给出的值仅供参考。 1.3 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践，并确定监管限制的适用性。 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《国际标准、指南和建议制定原则决定》中确立的国际公认标准化原则制定的。 =====意义和用途====== 5.1 仅通过红外识别乳胶漆中的特定丙烯酸聚合物通常是困难的或不可能的。当丙烯酸与乙酸乙烯酯以共聚单体的形式少量存在时，或者当与醇或其他酯体系混合时，这一点尤其正确。 如果在这样的系统中需要识别丙烯酸成分，则通常可以通过热解漆膜的气液色谱分析来完成。许多其他聚合物的存在通常也可以通过热解来确认，因为它们会产生特征性和可再现的热解图。 5.2 根据样品组成，从未知样品中获得的热解图的复杂性有所不同。有必要根据本实践第一部分中获得的红外光谱研究确定尽可能多的组分的存在或不存在。然后，气-液色谱结果可用于帮助识别存在的任何未知成分，并确认通过红外进行的识别。

1.1 This practice describes a procedure for the qualitative identification in emulsion paints of most types of polymers present as major components of the paint vehicle. Limitations are discussed in Sections 5 and 10 . 1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 Identification of specific acrylic polymers in emulsion paints is often difficult or impossible by infrared alone. This is particularly true when the acrylic is present in a small amount as a comonomer with vinyl acetate, or when blended with alkyds or other ester systems. If identification of an acrylic component is required in such a system, it may often be accomplished by gas-liquid chromatographic analysis of the pyrolyzed paint film. The presence of a number of other polymers may often also be confirmed by pyrolysis since they produce characteristic and reproducible pyrograms. 5.2 The pyrograms obtained from unknown samples vary in complexity according to the sample composition. It is necessary to establish the presence or absence of as many components as possible from a study of the infrared spectra obtained in the first part of this practice. The gas-liquid chromatography results may then be used to help identify any unknown components present and to confirm identifications made by infrared.