1.1 本试验方法涵盖了预成型胶带密封剂低温柔韧性试验的实验室程序。 1.2 以国际单位制表示的数值应视为标准。括号中的值仅供参考。 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。 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====== 5.1 预制胶带密封剂是粘性、可变形的固体，在各种密封应用中，在两个基材之间压缩使用。 该程序不是为了模拟实际使用条件，但它将给出胶带在低温下的柔韧性和附着力的一些指示。它可以用来区分可移动的柔性带和在低温下弯曲时易于硬化或变脆、开裂或失去附着力的柔性带。它还将有助于识别由于过度拉伸和含有低水平粘合剂而具有较差柔韧性的密封剂，以及那些具有在低温下会变脆的粘合剂的密封剂。

1.1 This test method covers a laboratory procedure for testing the low-temperature flexibility of preformed tape sealants. 1.2 The values stated in SI units are to be regarded as the standard. The values 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 ====== 5.1 Preformed tape sealants are tacky, deformable solids that are used under compression between two substrates in a variety of sealing applications. This procedure is not intended to simulate an actual use condition, but it will give some indication of the flexibility and adhesion of a tape at low temperature. It can serve to differentiate between flexible tapes that can take some movement and those that tend to harden or embrittle on aging and crack or lose adhesion when flexed at low temperature. It will also aid in identifying sealants that have poor flexibility because they are overextended and contain a low level of binder as well as those sealants having binders that will embrittle at low temperature.