1.1 本试验方法涵盖了一个程序，用于确定在带有循环空气的单个试管外壳中加热橡胶试样引起的劣化。这种隔离可以防止由于挥发性物质（例如抗氧化剂）的损失及其随后迁移到其他橡胶化合物（样品）中而导致的化合物交叉污染。此类挥发性材料的吸收可能会影响橡胶化合物的降解速率。 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 橡胶和橡胶制品必须能够抵抗氧化和热老化引起的物理性能随时间的恶化。本试验方法确定这些特性的方式不存在社区型老化装置固有的一些复杂情况，即在同一外壳中老化许多化合物（样品）。 4.2 通过使用单个循环空气试管外壳隔离化合物（样本），防止挥发性产物的交叉污染，并允许对老化性能进行更具代表性的评估。 4.3 请参阅测试方法中的附件 D573 有关用于加速试验老化评估精密试验的标准化合物的重要信息。

1.1 This test method covers a procedure to determine the deterioration induced by heating rubber specimens in individual test tube enclosures with circulating air. This isolation prevents cross contamination of compounds due to loss of volatile materials (for example, antioxidants) and their subsequent migration into other rubber compounds (specimens). The absorption of such volatile materials may influence the degradation rate of rubber compounds. 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 ====== 4.1 Rubber and rubber products must resist the deterioration of physical properties with time caused by oxidative and thermal ageing. This test method determines these characteristics in a way that is free of some of the complications inherent in community-type ageing devices, that is where numerous compounds (specimens) are aged in the same enclosure. 4.2 The isolation of compounds (specimens) by the use of individual circulating air test tube enclosures prevents cross contamination from volatile products and permits a more representative assessment of ageing performance. 4.3 Please refer to the Annex in Test Method D573 for important information on standard compounds used for precision testing for accelerated test ageing evaluation.