1.1 这些实践包括通过将粘结试样暴露在高温和低温以及高相对湿度和低相对湿度的条件下，测定胶粘剂对循环加速使用条件的耐受性。降解程度由暴露在试验条件下引起的强度特性变化确定( 注1 ). 人们认识到，没有任何降解材料的加速程序与实际使用条件完全相关，并且没有任何单个或小组实验室测试条件将模拟所有实际使用条件。因此，在解释和使用本实践中获得的数据时必须小心。材料规范中规定了试验条件、使用的试验条件循环次数、用于确定退化程度的特定强度特性，以及是否使用试样或试板。 注1: 这些规程/条件适用于批准的ASTM粘合剂强度试验方法中所述的试样，如下所示: 试验方法 D897 , D903 , D906 , D950型 , D1002 , D1062号 ，以及试验方法 D1344 . 1.2 以国际单位制表示的数值应视为标准。 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 这些实践提供了抗循环实验室老化的信息。

1.1 These practices cover the determination of the resistance of adhesives to cyclic accelerated service conditions by exposing bonded specimens to conditions of high and low temperatures and high and low relative humidities. The extent of degradation is determined from changes in strength properties as a result of exposure to the test conditions ( Note 1 ). It is recognized that no accelerated procedure for degrading materials correlates perfectly with actual service conditions, and that no single or small group of laboratory test conditions will simulate all actual service conditions. Consequently, care must be exercised in the interpretation and use of data obtained in this practice. The test condition, the number of cycles of the test condition to be used, the particular strength property to be used to determine the extent of degradation, and whether test specimens or test panels are to be used, are specified in the material specification. Note 1: These practices/conditions are intended for use with specimens described in the approved ASTM strength test methods for adhesives as follows: Test Methods D897 , D903 , D906 , D950 , D1002 , D1062 , and Test Method D1344 . 1.2 The values stated in SI units are to be regarded as the standard. 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 These practices provide information on the resistance to cyclic laboratory aging.