1.1 本防火测试响应标准包含一种小规模实验室程序的测试方法，用于确定密度小于250 kg/m的水平定向多孔聚合物材料的相对燃烧速率、燃烧程度和燃烧时间 3. . 1.2 结果旨在初步表明其在特定应用的易燃性方面的可接受性。材料的最终验收取决于其在符合适用于该最终产品的标准的最终产品中的使用。 1.3 中描述的分类系统 附录X1 用于产品的质量保证和组件材料的预选。 1.4 本标准测量并描述了材料、产品或组件在受控条件下对热量和火焰的响应，但其本身并不包括在实际火灾条件下对材料、产品或组件进行火灾危险或火灾风险评估所需的所有因素。 1.5 以国际单位制表示的数值应视为标准值。 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。 有关具体的危险声明，请参阅 6.1.1 . 1.7 防火测试本身就很危险。在进行这些测试时，应采取适当的人员和财产保护措施。 注1: 本试验方法等同于ISO 9772 1.8 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 本试验方法提供了一种测量多孔聚合物材料燃烧时间和程度的方法。它还提供了一种测量材料燃烧速率的方法，这些材料持续燃烧超过规定的标距。 5.2 本试验方法提供了一种方法，用于比较厚度密度、泡孔尺寸和表面不规则性等材料的燃烧特性，包括多孔聚合物材料的落粒效应。它适用于质量控制、规范验收和研发。示例包括填充或加固、刚性或柔性、切割或成型材料 5.3 在本试验方法中，试样经受一组或多组特定的实验室火灾试验暴露条件。如果替换了不同的测试条件，或者预期的最终使用条件发生了变化，则根据该测试方法并不总是能够预测所测性能特性的变化。 因此，结果仅在本程序中描述的火灾试验暴露条件下严格有效。 5.4 本试验方法不是火灾危险的标准。材料产生的火灾危险取决于材料的形式和最终用途。火灾危险性评估包括但不限于许多因素，如火焰传播、燃烧速率、点火难易程度、燃料贡献、热量释放、燃烧产物等。

1.1 This fire-test-response standard contains a test method for small-scale laboratory procedures to be used to determine the relative rate of burning and the extent and time of burning of horizontally oriented cellular polymeric materials having a density less than 250 kg/m 3 . 1.2 The results are intended to serve as a preliminary indication of their acceptability with respect to flammability for a particular application. The final acceptance of the material is dependent upon its use in the end-product that conforms with the standards applicable to such end-product. 1.3 The classification system described in the Appendix X1 is intended for quality assurance and the preselection of component materials for products. 1.4 This standard measures and describes the response of materials, products, or assemblies to heat and flame under controlled conditions, but does not by itself incorporate all factors required for fire hazard or fire risk assessment of the materials, products, or assemblies under actual fire conditions. 1.5 The values stated in SI units are to be regarded as 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. For a specific hazard statement, see 6.1.1 . 1.7 Fire testing is inherently hazardous. Adequate safeguards for personnel and property shall be employed in conducting these tests. Note 1: This test method is equivalent to ISO 9772. 1.8 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 means of measuring the time and extent of burning for cellular polymeric materials. It also provides a means of measuring burning rates for materials that continue to burn past the specified gage marks. 5.2 This test method provides a means of comparing the burning characteristics of materials of like thickness density, cell size, and skin irregularities, including the effect of falling particles of cellular polymeric materials. It is suitable for quality control, specification acceptance, and for research and development. Examples include filled or reinforced, rigid or flexible, or cut or formed materials 5.3 In this test method, the specimens are subjected to one or more specific sets of laboratory fire test exposure conditions. If different test conditions are substituted or if the anticipated end-use conditions are changed, it is not always possible from this test method to predict changes in the performance characteristics measured. Therefore, the results are strictly valid only for the fire test exposure conditions described in this procedure. 5.4 This test method is not intended to be a criterion for fire hazard. The fire hazard created by materials depends upon the form and end use of the material. Assessment of fire hazard includes, but is not limited to, many factors such as flame spread, burning rate, ease of ignition, fuel contribution, heat evolution, products of combustion, and others.