1.1 本耐火试验响应标准包含一种小规模实验室程序的测试方法，用于使用暴露于125 mm（标称500-W）火焰中的小棒和斑块样本来确定塑料的相对燃烧特性和耐烧穿性。 1.1.1 使用测试方法 D3801 用于评估垂直位置固体塑料的比较燃烧特性。 注1: 本试验方法等同于IEC 60695-11-20和UL 94（第9节）。 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标准的最终产品中的使用- 产品 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 如果认为合适，则适用于其他非金属材料。此类应用不在本技术委员会的范围内。 1.5 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。 1.6 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。 1.7 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。 看见 6.1.1 对于特定的危险声明。 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 测试结果显示了材料在测试条件下的余火加余辉时间（秒）。 斑块的测试结果还表明，指定的火焰是否会烧穿材料。 5.2 该测试能够评估材料厚度、颜色、添加剂、劣化和挥发性成分可能损失对余火和余辉的影响。 5.3 发现燃烧特性随厚度而变化。试验数据只能与相同厚度材料的数据进行比较。 5.4 研究结果可作为比较材料相对性能的参考，并有助于材料选择。 5.5 在本试验方法中，试样经受一个或多个特定的实验室试验条件。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预测火灾的变化并不总是可能的- 测量的测试响应特性。因此，结果仅对本试验方法中描述的火灾试验暴露条件有效。

1.1 This fire-test-response standard contains a test method for small-scale laboratory procedures to be used to determine the relative burning characteristics and the resistance to burn-through of plastics using small bar and plaque specimens exposed to a 125-mm (500-W nominal) flame. 1.1.1 Use Test Method D3801 for assessing comparative burning characteristics of solid plastics in a vertical position. Note 1: This test method is equivalent to IEC 60695-11-20 and UL 94 (Section 9). 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 Appendix X1 is intended for quality assurance and the preselection of component materials for products. 1.4 If found to be appropriate, it is suitable to apply the requirements to other nonmetallic materials. Such application is outside the scope of this technical committee. 1.5 Fire testing is inherently hazardous. Adequate safeguards for personnel and property shall be employed in conducting these tests. 1.6 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. 1.7 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. See 6.1.1 for a specific hazard statement. 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 The test results present afterflame plus afterglow times, in seconds, for a material under the conditions of the test. The test results for plaques also indicate whether or not the specified flame will burn through a material. 5.2 The test is capable of assessing the effects of material thickness, colors, additives, deterioration, and possible loss of volatile components on afterflame and afterglow. 5.3 The burning characteristics is found to vary with thickness. Test data shall be compared only with data for material of the same thickness. 5.4 The results serve as a reference for comparing the relative performance of materials and can be an aid in material selection. 5.5 In this test method, the specimens are subjected to one or more specific laboratory test conditions. If different test conditions are substituted or the end-use conditions are changed, it will not always be 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 test method.