1.1 本试验方法涵盖了一个实验室程序，该程序有助于确定密封剂的耐久性及其在连续浸入液体中时与基材的附着力。该方法测试液体对密封剂及其与基材的粘附力的影响。它不测试静水压力引起的恒定应力的附加影响，静水压力通常存在于浸没和地下应用中的密封剂中，也不测试浸没时接缝移动引起的应力的附加影响。在许多应用中，该方法也不（以其标准形式）测试液体中可能存在的酸或焦散物或其他材料的附加影响。 1.2 以国际单位制表示的数值应视为标准。括号中的英寸-磅仅供参考。 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====== 5.1 本试验方法使用高温来加速密封剂的降解及其与基材的附着力。该试验方法是一种加速方法，仅当实际使用温度显著低于升高的试验温度时，才可作为长期耐久性的预测指标。 5.2 该测试方法可作为寿命指标，但对于许多应用而言，很难与实际使用直接相关。 5.3 本试验方法的数据与密封剂接缝具有干湿循环的应用之间的相关性将很难实现，因为对于某些基材上的一些密封剂，在潮湿期损失的附着力在干燥期会恢复。 5.4 本试验方法在热液体中进行，可将其视为加速密封剂劣化或密封剂与基材的粘附。与密封剂在某些应用中的使用方式相比，在某些情况下，该测试可能不如实际应用严重。使用本试验方法的益处将取决于本试验条件与实际使用条件（温度、持续时间、基质性质、液体成分）的比较。 5.5 确定密封剂在给定应用中的性能；经相关方共同同意，通常需要并允许对本程序进行修改。

1.1 This test method covers a laboratory procedure that assists in determining the durability of a sealant and its adhesion to a substrate while continuously immersed in a liquid. This method tests the influence of a liquid on the sealant and its adhesion to a substrate. It does not test the added influence of constant stress from hydrostatic pressure that is often present with sealants used in submerged and below-grade applications, nor does it test the added influence of stress from joint movement while immersed. This method also does not (in its standard form) test the added influence of acids or caustics or other materials that may be in the liquid, in many applications. 1.2 The values stated in SI units are to be regarded as the standard. The inch-pound given in parentheses are provided 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 ====== 5.1 This test method uses elevated temperature in an attempt to accelerate the degradation of a sealant and its adhesion to a substrate. This test method is an accelerated method and will only be a predictor of long-term durability if the actual service temperature is significantly lower than the elevated test temperature. 5.2 This test method can be used as an indicator of longevity but direct correlation to actual use will be difficult for many applications. 5.3 The correlation of data from this test method to applications where the sealant joint will have wet and dry cycles will be difficult since, with some sealants on some substrates, adhesion that is lost during wet periods is regained during dry periods. 5.4 This test method is performed in a hot liquid and may be considered an acceleration of deterioration of the sealant or the sealant's adhesion to a substrate. Compared to how the sealant will be used in some applications, in some cases, this test may be less severe than the actual application. The benefit from the use of this test method will depend on the comparison of the conditions of this test to the actual conditions of use (temperature, duration, nature of substrate, composition of the liquid). 5.5 To determine the ability of a sealant to perform in a given application; modification of this procedure will often be required and is permissible, as mutually agreed upon by interested parties.