1.1 本试验方法旨在用作小型实验室程序，用于比较机动车乘员舱中使用的聚合物材料的相对水平燃烧速率。 1.2 在燃烧过程中，会产生对人员有潜在危险的气体或蒸汽，或两者兼而有之。应采取足够的预防措施保护操作员。 1.3 单位- 以国际单位制表示的数值应视为标准值。 1.4 本试验方法、联邦安全标准MVSS 302、SAE J369和ISO 3795涉及相同的主题，但技术内容不同。 1.5 本标准用于测量和描述材料、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。 1.6 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。 第节给出了具体的危险说明 7. . 1.7 火灾测试本身就很危险。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: 没有已知的ISO等效于本标准。 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标准实验室程序，用于在规定的受控条件下测量和比较聚合物材料的燃烧速率。 5.2 燃烧速率受密度、上升方向、表面处理类型和数量等因素的影响。还必须考虑成品试样的厚度。为了在相同的基础上比较材料，必须考虑这些因素。 5.3 在该程序中，样本经受一组或多组特定的实验室测试条件。如果替换了不同的试验条件或改变了最终使用条件，则通过本试验方法或从本试验方法中并不总是可能预测测得的耐火试验响应特性的变化。 因此，结果仅适用于本程序中描述的火灾试验暴露条件。

1.1 This test method is intended for use as a small-scale laboratory procedure for comparing the relative horizontal burning rates of polymeric materials used in occupant compartments of motor vehicles. 1.2 During the course of combustion, gases or vapors, or both, are evolved that are potentially hazardous to personnel. Adequate precautions shall be taken to protect the operator. 1.3 Units— The values stated in SI units are to be regarded as standard. 1.4 This test method, Federal Safety Standard MVSS 302, SAE J369, and ISO 3795 address the same subject matter, but differ in technical content. 1.5 This standard is used to measure and describe 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 hazards or fire risk assessment of materials, products, or assemblies under actual fire conditions. 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. Specific hazard statements are given in Section 7 . 1.7 Fire testing is inherently hazardous. Adequate safeguards for personnel and property shall be employed in conducting these tests. Note 1: There is no known ISO equivalent to this standard. 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 standard laboratory procedure for measuring and comparing the burning rates of polymeric materials under specified controlled conditions. 5.2 The rate of burning is affected by such factors as density, direction of rise, and type and amount of surface treatments. The thickness of the finished specimens must also be taken into account. These factors must be considered in order to compare materials on the same basis. 5.3 In this procedure, the specimens are subjected to one or more specific sets of laboratory test conditions. If different test conditions are substituted or the end-use conditions are changed, it is not always possible by or from this test method to predict changes in the fire-test-response characteristics measured. Therefore, the results are valid only for the fire test exposure conditions described in this procedure.