1.1 本试验方法涵盖了确定高温和气压对硫化橡胶物理性能影响的程序。由于性能条件差异很大，因此该测试的结果可能与服务性能没有精确的相关性。然而，该试验可用于在实验室比较的基础上评估橡胶化合物。它最适用于温度和气压升高条件下的性能。 注1: 为了在更接近自然老化的较不严重条件下评估硫化橡胶，使用试验方法 D573 和 D865 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。该试验方法允许在高气压和高温的加速条件下测定这些性能。 4.2 参考试验方法中的附录 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 influence of elevated temperature and air pressure on the physical properties of vulcanized rubber. The results of this test may not give an exact correlation with service performance since performance conditions vary widely. The test may, however, be used to evaluate rubber compounds on a laboratory comparison basis. It will be most applicable to performance under conditions of increased temperature and air pressure. Note 1: For evaluating rubber vulcanizates under less severe conditions that more nearly approach natural aging, the use of Test Methods D573 and D865 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. 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 allows these performance properties to be determined under the accelerated conditions of high air pressure and at elevated temperatures. 4.2 Refer to the Annex in Test Method D573 for important information on standard compounds used for precision testing for accelerated test aging evaluation.