1.1 本试验方法描述了测定气溶胶泡沫密封剂流速的程序。 1.2 流速在受控实验室环境中通过手动分配（方法a）或使用流速仪（方法B）确定。 1.3 目前，两种泡沫密封剂类型适用于本试验方法:单组分聚氨酯和乳胶。 1.4 没有其他已知的测试方法专门用于测量气溶胶泡沫密封剂的流速。 1.5 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.6 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。 1.7 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 本试验方法提供了在标准实验室条件或特定温度和相对湿度范围下，一次从一罐泡沫中分配的泡沫量的计算数据点。 5.2 流速不能预测泡沫密封剂的性能或其对预期应用的适用性。 5.3 流速可以用试验机（程序B）或预期的涂敷器或分配装置（程序a）测量。 5.4 该测试适用于产品性能认证和质量控制计划，对公众、气溶胶泡沫密封剂制造商、分销商、规范者、建筑师、承包商、测试实验室以及其他企业和专业人士有用。

1.1 This test method describes a procedure for determining the flow rate of aerosol foam sealants. 1.2 Flow rate is determined in a controlled laboratory environment with manual dispensing (Method A) or using a flow rate machine (Method B). 1.3 Currently, two foam sealant types are applicable to this test method: single component polyurethane and latex. 1.4 There are no other known test methods specific for measuring the flow rate of aerosol foam sealants. 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.6 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. 1.7 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 provides a calculated data point regarding the amount of foam dispensed at one time from a single can of foam at standard laboratory conditions or a specific temperature and relative humidity range. 5.2 Flow Rate does not predict the performance capability of the foam sealant or its suitability for the intended application. 5.3 Flow Rate can be measured with a testing machine (Procedure B) or with the intended applicator or dispensing unit (Procedure A). 5.4 The test is suitable for product performance certification and quality control programs, and can be useful to the general public, aerosol foam sealant manufacturers, distributors, specifiers, architects, contractors, testing laboratories, and other businesses and professionals.