1.1 本试验方法包括两个实验室程序，用于测定建筑施工中使用的弹性密封剂的挤出速率。 1.2 以国际单位制或英寸磅单位表示的数值应单独视为标准。每个系统中规定的值不一定是完全相等的；因此，为了确保符合标准，每个系统应独立使用，并且不得将两个系统的值组合使用。 1.3 本标准并不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 目前还没有与此测试方法等效的ISO。 1.5 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====== 4.1 密封剂具有各种流变特性，从可倾倒的液体到不结块的糊状物。提供单组分密封剂，以便在打开容器时使用。多组分密封剂作为基础组分和固化剂单独包装提供。将两个或多个部分混合后，即可使用密封剂。该试验方法旨在提供一种测量流变特性范围内挤出速率的方法。 4.2 此测试方法还包括测量冻结的选项- 这种密封剂的解冻和热稳定性。 4.3 该试验方法提供了金属或塑料喷嘴的选择。当需要更高的精度时，如在ASTM规范中，应使用金属喷嘴。塑料喷嘴可用于密封剂性能的一般筛选，或在测试大量试样时用于开发目的。 4.4 该试验方法测量在给定压力（kPa或psi）下在给定时间段内挤出的密封剂体积。

1.1 This test method covers two laboratory procedures for determining the extrusion rate of elastomeric sealants for use in building construction. 1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. 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 There is no known ISO equivalent to this test method. 1.5 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 Sealants are supplied with various rheological properties ranging from pourable liquids to nonsagging pastes. Single-component sealants are supplied ready for use upon opening the container. Multicomponent sealants are supplied as a base component(s) and a curing agent separately packaged. After mixing the two or more parts, the sealant is ready for application. This test method is intended to provide a means to measure the extrusion rate spanning the range of rheological properties. 4.2 This test method also covers the option of measuring the freeze-thaw and heat stability of such sealants. 4.3 This test method provides for an option of either a metal or plastic nozzle. It is intended that the metal nozzle be used when greater precision is required, such as in ASTM specifications. The plastic nozzle may be used for general screening of sealant properties or for developmental purposes when a large number of test specimens are being tested. 4.4 This test method measures the volume of sealant extruded over a given period of time at a given pressure (kPa or psi).