1.1 本规范涵盖了一种基于聚偏氟乙烯（PVDF）的低密度材料，用于电线和电缆的护套材料。 1.1.1 该材料具有闭孔泡沫结构。 1.2 本规范中涵盖的护套材料用于功率限制应用中的电线和电缆，如光纤电缆、通信电缆、同轴电缆或功率限制火灾报警电缆。该材料不适用于电力电缆。 1.3 以国际单位制表示的数值应视为标准值。括号中给出的值是英寸-磅单位的数学转换，仅供参考，不被视为标准值。 1.4 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。 1.5 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。

1.1 This specification covers a low-density material based on poly (vinylidene fluoride) (PVDF), intended for use as jacketing material for wire and cable. 1.1.1 The material has a closed cell foam structure. 1.2 The jacketing material covered in this specification is intended for use in wires and cables in power-limited applications, such as optical fiber cables, communications cables, coaxial cables, or power limited fire alarm cables. The material is not intended for use in power cables. 1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered standard. 1.4 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. 1.5 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.