1.1 本试验方法涵盖了一种测量垫片材料热压缩性能的方法，通过测量其在室温和升高温度下恒定负载下的蠕变。可以确定垫片材料的短期蠕变特性，包括冷蠕变和热蠕变、总蠕变和压缩永久变形。 1.2 以国际单位制表示的数值应视为标准值。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====== 5.1 垫片材料的热压缩性能，包括抗蠕变和压缩永久变形，是选择特定密封应用中使用的给定材料的主要因素。部分基于测试方法的重要性； 假设材料在高温下表现出过多蠕变，则其功能将不再像密封一样有效。这一假设只能作为指导；然而，由于垫片材料（通常为粘弹性材料）的精确屈服点或失效点难以定义。可以比较两种或两种以上的材料，以确定其热压缩性能的差异。出于质量保证目的，可以将材料样品与同一材料原始批次上的既定标准或先前确定的特性进行比较。 5.2 使用中所述的凸起轮廓嵌件或校准环测试样品 6.3 和 图1 因此面积（2042 mm 2. （3.17英寸。 2. ))在测试过程中保持不变。 图1 测定热压缩的试验组件

1.1 This test method covers a means of measuring the hot compression properties of a gasket material by measuring its creep under a constant load at both room temperature and while increasing the temperature. Short term creep properties including both cold and hot creep, total creep and compression set of a gasket material can be determined. 1.2 The values stated in SI units are to be regarded as 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 ====== 5.1 The hot compression properties of a gasket material, including creep resistance and compression set, are a major factor with regard to the selection of a given material for use in a particular sealing application. The significance of the test method is based, in part; on the assumption that if a material exhibits too much creep at elevated temperature that it will no longer function as effectively as a seal. This assumption can only be used as a guide; however, since exact yield or failure points are difficult to define for gasket materials (which are usually viscoelastic in nature). Two or more materials can be compared to determine differences in their hot compression properties. A sample of material can be compared to an established standard or previously determined characteristics on original lots of the same material, for quality assurance purposes. 5.2 Samples are to be tested with a raised profile insert or calibration ring described in 6.3 and Fig. 1 so that the area (2042 mm 2 (3.17 in. 2 )) remains constant during the test. FIG. 1 Test Assembly for Determining Hot Compression