1.1本文件规定了两种热重分析方法，通过使用带红外干燥装置的自动分析仪测定生胶中的水分和其他挥发物含量。 1.2这些方法适用于ISO 1629中列出的合成橡胶（丁苯橡胶、丁腈橡胶、丁腈橡胶、IR、CR、IIR、卤化IIR和三元乙丙橡胶）中挥发物含量的测定，以及各种形式的原橡胶，如包、块、片、颗粒、碎屑、粉末和片材。只有当质量变化被证明仅仅是由于原始挥发性物质的损失而不是橡胶降解时，这些方法也可能适用于其他生胶。 1.3本方法不适用于ISO 1795规定的需要均质的生胶。 1.4 ISO 248-1中规定的热磨机法和烘箱法以及本文件中规定的方法可能不会给出相同的结果。因此，在有争议的情况下，ISO 248-1中规定的烘箱方法程序A: 2011年，是裁判法。 注:当自动分析仪的测量条件针对特定生橡胶或生橡胶等级固定时，这些方法可用于常规测定，例如质量控制。

1.1 This document specifies two thermogravimetric methods for the determination of moisture and other volatile-matter content in raw rubbers by using an automatic analyser with an infrared drying unit. 1.2 These methods are applicable to the determination of volatile-matter content in synthetic rubbers (SBR, NBR, BR, IR, CR, IIR, halogenated IIR and EPDM) listed in ISO 1629 and to various forms of raw rubber, such as bale, block, chip, pellet, crumb, powder and sheet. These methods might also be applicable to other raw rubbers only when the change in mass is proven to be due solely to loss of original volatile matter and not to rubber degradation. 1.3 The methods are not applicable to raw rubbers which need homogenizing as specified in ISO 1795. 1.4 The hot-mill method and the oven method specified in ISO 248？1 and the methods specified in this document might not give identical results. In cases of dispute, therefore, the oven method, procedure A, specified in ISO 248？1:2011, is the referee method. NOTE These methods can be useful for routine determinations, e.g. quality control, when the measurement conditions for the automatic analyser are fixed for a particular raw rubber or grade of raw rubber.