1.1 本规程涵盖了商业上称为再生硫化颗粒橡胶的复合材料的评估方法。这些方法通常用于质量控制，或根据分类对再生硫化颗粒橡胶进行分类 D5603 . 1.2 以国际单位制表示的数值应视为标准值。国际单位制后括号中给出的值仅供参考，不被视为标准值。 1.3 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。 1.4 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《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====== 4.1 出于质量控制和分类目的，需要确定回收硫化颗粒橡胶的成分。 4.2 本规程为橡胶成分分析的标准试验方法提供了参考，并为回收行业广泛应用的方法提供了指南。

1.1 This practice covers the evaluation methods for the compounding material commercially known as recycled vulcanizate particulate rubber. The methods are of general usage in quality control or are needed for the classification of the recycled vulcanizate particulate rubber according to Classification D5603 . 1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard. 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 ====== 4.1 For quality control and classification purposes, it is required to determine the composition of recycled vulcanizate particulate rubber. 4.2 This practice provides references for standard test methods for composition analysis of rubber and offers a guide for methods widely applied by the recycling industry.