1.1 本试验方法包括测定硫化橡胶在高温高压氧气环境中的相对耐劣化性的程序。由于自然老化条件的变化，这种加速试验与橡胶的自然老化之间可能没有确切的相关性。这种加速试验适用于实验室化合物或产品的比较。 注1: 为了在更接近自然老化的较不严重条件下评估橡胶硫化胶，使用试验方法 D573 和 D865 建议使用。为了评估在富氧环境中使用的橡胶硫化胶在模拟环境压力下自然老化和加速老化的条件下的老化特性，使用实践 G114 建议使用。 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。 （有关具体的预防说明，请参阅 注2 .) 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 4.1 橡胶和橡胶产品必须能抵抗氧化和热老化引起的物理性能随时间的恶化。该试验方法提供了一种评估橡胶在特定加速条件下的这些性能特性的方法。 4.2 请参考试验方法中的附件 D573 有关用于加速测试老化评估的精密测试的标准化合物的重要信息。

1.1 This test method covers a procedure to determine the relative deterioration resistance of vulcanized rubber in a high temperature and high pressure oxygen environment. There may be no exact correlation between this accelerated test and natural aging of rubber because of the varied conditions of natural aging. This accelerated test is suitable for laboratory compound or product comparisons. Note 1: For evaluating rubber vulcanizates under less severe conditions more nearly approaching natural aging, the use of Test Methods D573 and D865 is recommended. For evaluating the aging characteristics of rubber vulcanizates used in oxygen enriched atmospheres under conditions simulating natural and accelerated aging at ambient pressure, the use of Practices G114 is recommended. 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. (For specific precautionary statement, see Note 2 .) 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 aging. This test method provides a way to assess these performance characteristics of rubber, under certain accelerated conditions as specified. 4.2 Please refer to the Annex in Test Method D573 for important information on standard compounds used for precision testing for accelerated test aging evaluation.