1.1本耐火试验响应试验方法涵盖了用水浸取缓冲材料并确定两种特定耐火试验响应特性变化的程序:( 1. )表面易燃性，符合试验方法D 3675，以及( 2. )根据试验方法E 662，产生的烟雾的比光密度。 1.2鉴于潜在使用条件的广泛变化，该浸出试验的结果可能不会与所有应用的使用性能直接相关。然而，该测试方法产生了比较数据，可以根据这些数据判断缓冲材料的预期使用情况，并可用于研发工作。 1.3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。 1.4 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。 1.5 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和健康实践，并确定监管限制的适用性。 有关具体的预防说明，请参阅第7节。 ====意义和用途====== 材料或产品的耐火性能受其耐火试验响应特性的组合影响。两种最常见的火灾- 根据测试方法D 3675，缓冲材料的测试响应特性为表面易燃性 和烟雾的比光密度，符合试验方法E 662 . 软垫应用中使用的缓冲材料可能因以下原因而暴露于活性成分的浸出中:( 1. )处理剂的水溶性或( 2. )暴露在高湿度下。 鉴于软垫应用中使用的缓冲材料的耐火性能在其预期使用寿命内保持恒定的重要性，本试验方法提供了一种方法来测试两种耐火试验响应特性因浸出而产生的潜在变化。

1.1 This fire-test-response test method covers a procedure for leaching cushioning materials with water and determining changes in two specific fire-test-response characteristics: ( 1 ) the surface flammability, in accordance with Test Method D 3675, and ( 2 ) the specific optical density of smoke generated, in accordance with Test Method E 662. 1.2 In view of the wide variation in potential service conditions, it is likely that results of this leaching test will not give a direct correlation with service performance for all applications. However, the test method yields comparative data on which to base judgments as to expected service of cushioning materials and is useful in research and development work. 1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.4 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. 1.5 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 and health practices and determine the applicability of regulatory limitations prior to use. For specific precautionary statements, see Section 7. ====== Significance And Use ====== The fire performance of a material or product is affected by a combination of its fire-test-response characteristics. Two of the most commonly determined fire-test-response characteristics of cushioning materials are the surface flammability, in accordance with Test Method D 3675 , and the specific optical density of smoke, in accordance with Test Method E 662 . Cushioning materials used in upholstery applications are potentially exposed to leaching of the active ingredients due to ( 1 ) water solubility of the treating agents or ( 2 ) exposure to high humidity. In view of the importance that the fire performance of the cushioning materials used in upholstery applications remain constant throughout their intended service life, this test method provides a means to test for the potential change in two fire-test-response characteristics due to leaching.