1.1 本规范涵盖了建筑施工中使用的辐射屏蔽材料的一般物理性能要求。该范围特别限于辐射屏蔽板材料的要求，该材料由至少一个远红外发射率为0.1或更低的表面组成，例如安装或卸载在基板上的金属箔或金属沉积物。 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值。每个系统中规定的值不一定是精确的等价物；因此，为确保符合本标准，每个系统应独立使用，且两个系统的值不得组合。 1.3 以下安全隐患警告仅适用于试验方法（第 10 )如本规范所述。 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====== 8.1 本规范承认薄板辐射屏障的有效性取决于正确安装。实践 C1743 和 C1744 解决辐射屏障的使用和安装问题。 8.2 本规范确定了对板材辐射屏蔽产品很重要的材料特性。在适当情况下，已说明属性值。 8.3 当特定应用需要特定材料特性时，用户应咨询制造商。 8.4 辐射屏障应无灰尘或其他污染物，以保持有效。

1.1 This specification covers the general physical property requirements of radiant barrier materials for use in building construction. The scope is specifically limited to requirements for radiant barrier sheet materials that consist of at least one surface having a far-infrared emittance of 0.1 or less, such as metallic foils or metallic deposits mounted or unmounted on substrates. 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 The following safety hazards caveat pertains only to the test methods (Section 10 ) described in this specification. 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 ====== 8.1 This specification recognizes that the effectiveness of a sheet radiant barrier is dependent on proper installation. Practices C1743 and C1744 address use and installation of radiant barriers. 8.2 This specification identifies the material properties that are important for sheet radiant barrier products. When appropriate, values for the properties have been stated. 8.3 When specific material properties are required for a particular application the user shall consult the manufacturer. 8.4 Radiant barriers shall be free of dust or other contaminants to remain effective.