1.1 本试验方法涵盖了在暴露于校准的对流和辐射能热源60 s时用作热障的纺织材料的传热评估。 1.1.1 本标准用于确定热传递是否足以点燃与纺织品隔热层相邻的易燃材料。 1.2 本标准用于区分纺织材料。 1.3 本试验方法不用于测量防护服中所用材料的绝缘性能。 1.4 以SI单位或英寸-磅单位表示的数值应单独视为标准值。每个系统中所述的值不一定是精确的等价物；因此，为了确保符合标准，每个系统应独立使用，两个系统的值不得组合使用。 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和火焰的响应，但其本身并未包含在实际火灾条件下对材料、产品和组件进行火灾危险或火灾风险评估所需的所有因素。 1.6 本标准并不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建立适当的安全、健康和环境实践，并确定监管限制的适用性。 1.7 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 本试验方法测量特定时间段内通过热障织物材料的传热水平。 5.2 本试验方法用于评估隔热层，并确定其是否能够承受明火的冲击。 5.2.1 本试验方法用于评估热障织物材料与暴露于高热时表现出以下任何行为的材料一起使用时的热传递: 打开 炭化 滴水 脆化 点火装置 熔化 收缩 5.3 本试验方法不能代替美国消费品安全委员会（CPSC）16 CFR 1633的全尺寸试验方法。 注1: 本试验方法旨在评估热障织物材料，该材料用作床垫的热障部件，经测试符合16 CFR 1633。通过使用本方法获得的数据旨在提供是否有助于进行全尺寸试验的信息。 5.3.1 该测试方法可作为供应商质量保证计划的一部分。 5.4 本试验方法不用于评估防护服中使用的热障织物材料的传热。 5.5 由于实验室间精度信息不完整，因此不建议将本试验方法用于商业装运的验收试验。在某些情况下，买方和供应商应同意对一种或多种特定材料的商业装运进行测试，并建立自己的实验室间精度和偏差，并就可接受性限制达成一致。

1.1 This test method covers the evaluation of heat transfer of textile materials which are used as thermal barriers when exposed to a calibrated convective and radiant energy heat source for 60 s. 1.1.1 This standard is used to determine if the heat transfer is sufficient to ignite flammable materials which are contiguous to the textile thermal barriers. 1.2 This standard is used as a means to differentiate textile materials. 1.3 This test method is not intended to measure the insulation properties of materials used in protective clothing. 1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. 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 hazard or fire risk assessment of the 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. 1.7 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 measures the level of heat transfer through the thermal barrier textile material within a specific period of time. 5.2 This test method is used to evaluate thermal barriers and determine if they are able to withstand impingement by an open flame. 5.2.1 This test method is used to evaluate heat transfer when thermal barrier textile materials are used in conjunction with materials that demonstrate any of the following behaviors when exposed to high heat: break open charring dripping embrittlement ignition melting shrinkage 5.3 This test method cannot be used in place of the full scale test method U.S. Consumer Product Safety Commission (CPSC) 16 CFR 1633. Note 1: This test method is intended to be used to evaluate thermal barrier textile material, used as the thermal barrier component for mattresses that are tested to comply with 16 CFR 1633. Data obtained by using this method is intended to provide information as to whether it would be helpful to proceed with the full scale testing. 5.3.1 This test method can be used as part of a supplier quality assurance program. 5.4 This test method is not intended to be used in evaluating heat transfer of thermal barrier textile materials used in protective clothing. 5.5 This test method is not recommended for acceptance testing of commercial shipments, since information on interlaboratory precision is incomplete. In some cases the purchaser and the supplier shall agree to test a commercial shipment of one or more specific materials and establish their own interlaboratory precision and bias, and also agree on acceptability limits.