1.1 本规程涵盖了一种简单、快速的实践，通过将橡胶化学品的红外吸收光谱与参考样品的红外吸收光谱进行比较，证明其在加入橡胶混合物之前的特性。 1.2 该技术也可用于检测橡胶化学品中的严重污染或较大差异。因此，它可以为生产者-消费者协议提供基础。 1.3 在使用“红外光谱仪”的地方，也可以理解“傅立叶变换红外光谱仪（FTIR）”。 1.4 本标准并非旨在解决与其使用相关的所有安全问题（如有）。 本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.5 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《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 该程序可用于多种应用，包括识别未标记材料、过程控制、原材料验收、产品评估和环境测试期间的成分变化。 5.2 橡胶化学品的化学和物理性能差别很大。红外分光光度计在光谱呈现方面有所不同（一些与吸光度呈线性，其他与透射率呈线性，一些使用光栅进行能量色散，其他使用氯化钠棱镜，一些通过数学傅立叶变换获得光谱，等等）。 由于这些原因，不可能采用单一的通用试样制备方法和一组仪器参数。 5.3 通过使用特定的采样程序和操作条件，给定的分光光度计将给出吸收曲线，该曲线是所研究的橡胶化学品或混合物的特征。 5.4 将试样的红外光谱叠加在相同条件下获得的参考试样的红外光谱上的能力证明了两者是相同的。 5.5 试样或参考试样中存在额外吸收带表明存在一个或多个额外成分。

1.1 This practice covers a simple, rapid practice to prove the identity of a rubber chemical before incorporation into a rubber mix by comparison of its infrared absorption spectrum with that of a reference specimen. 1.2 This technique can also be used to detect gross contamination or large differences in rubber chemicals. Thus, it can provide a basis for producer-consumer agreement. 1.3 Wherever “infrared spectrophotometer” is used, “Fourier Transform Infrared Spectrometer (FTIR)” may also be understood. 1.4 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. 1.5 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 This procedure can be used for a variety of applications, including identifying unlabeled material, process control, raw material acceptance, product evaluation, and compositional change during environmental testing. 5.2 Rubber chemicals vary widely in their chemical and physical properties. Infrared spectrophotometers vary in the presentation of a spectrum (some are linear with absorbance, others with transmittance, some use grating for energy dispersion, others use a sodium chloride prism, some obtain a spectrum through a mathematical Fourier Transform, and the like). For these reasons, a single universal method of specimen preparation and set of instrument parameters is not possible. 5.3 By using a specific sampling procedure and operating conditions, a given spectrophotometer will give an absorption curve that is characteristic of the rubber chemical or mixture under investigation. 5.4 The ability to superimpose the infrared spectrum of the test specimen upon that of a reference specimen, obtained under the same conditions, is evidence that the two are identical. 5.5 The presence of additional absorption bands in either the test specimen or the reference specimen indicates the presence of one or more additional components.