ASTM E1474

泰然健康网
2024-12-27 22:55

1.1 该火灾测试响应测试方法可用于使用台架耗氧量热仪确定合同、机构或高风险居住软垫家具或床垫复合材料的可燃性和热释放。 1.2 本试验方法规定了在恒定初始试验热流为35的情况下，测量持续燃烧时间、热释放速率、峰值和总热释放以及有效燃烧热千瓦/米 2. . 该测试方法也适用于获得不同热通量下的热释放数据。样品水平定向，并使用火花点火源。 1.3 使用试验方法中描述的装置和程序确定持续燃烧时间、热释放和有效燃烧热 E1354 . 1.4 这些测试是在结合家具或床垫外层组件的实验室规模样本上进行的。不包括框架元素。 1.5 以国际单位制表示的数值应视为标准。括号中给出的值仅供参考。 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。有关具体的预防说明，请参阅第节 6. . 1.8 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。 1.9 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 本试验方法用于确定材料和复合材料在锥形量热计装置中暴露于规定初始试验热流下的持续燃烧和热释放时间。 5.2 定量热释放测量提供了可用于软垫和床垫产品设计和产品开发的信息。 5.3 热释放测量为产品开发提供了有用的信息，可以定量测量组件和复合材料修改引起的防火性能的具体变化。如果产品在相关火灾暴露条件下未在其表面传播火焰，则本试验方法中的热释放数据将无法预测产品行为。 5.4 测试限制- 如果出现以下任一情况，则测试数据无效:( 1. )爆炸剥落；或( 2. )试样在点火前充分膨胀以接触火花塞，或在燃烧过程中膨胀至加热器底座平面。

1.1 This fire-test-response test method can be used to determine the ignitability and heat release from the composites of contract, institutional, or high-risk occupancy upholstered furniture or mattresses using a bench scale oxygen consumption calorimeter. 1.2 This test method provides for measurement of the time to sustained flaming, heat release rate, peak and total heat release, and effective heat of combustion at a constant initial test heat flux of 35 kW/m 2 . This test method is also suitable to obtain heat release data at different heat fluxes. The specimen is oriented horizontally, and a spark ignition source is used. 1.3 The times to sustained flaming, heat release, and effective heat of combustion are determined using the apparatus and procedures described in Test Method E1354 . 1.4 The tests are performed on bench-scale specimens combining the furniture or mattress outer layer components. Frame elements are not included. 1.5 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 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 hazard or fire risk assessment of the 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. For specific precautionary statements, see Section 6 . 1.8 Fire testing is inherently hazardous. Adequate safeguards for personnel and property shall be employed in conducting these tests. 1.9 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 is used to determine the time to sustained flaming and heat release of materials and composites exposed to a prescribed initial test heat flux in the cone calorimeter apparatus. 5.2 Quantitative heat release measurements provide information that can be used for upholstery and mattress product designs and product development. 5.3 Heat release measurements provide useful information for product development by yielding a quantitative measure of specific changes in fire performance caused by component and composite modifications. Heat release data from this test method will not be predictive of product behavior if the product does not spread flame over its surface under the fire exposure conditions of interest. 5.4 Test Limitations— The test data are invalid if either of the following conditions occur: ( 1 ) explosive spalling; or ( 2 ) the specimen swells sufficiently prior to ignition to touch the spark plug, or the specimen swells up to the plane of the heater base during combustion.