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ASTM E1474

來源:泰然健康網 時間:2024年12月27日 22:55

1.1 該火災測試響應測試方法可用于使用臺架耗氧量熱儀確定合同、機構或高風險居住軟墊家具或床墊復合材料的可燃性和熱釋放。 1.2 本試驗方法規(guī)定了在恒定初始試驗熱流為35的情況下,測量持續(xù)燃燒時間、熱釋放速率、峰值和總熱釋放以及有效燃燒熱?千瓦/米 2. . 該測試方法也適用于獲得不同熱通量下的熱釋放數據。樣品水平定向,并使用火花點火源。 1.3 使用試驗方法中描述的裝置和程序確定持續(xù)燃燒時間、熱釋放和有效燃燒熱 E1354 . 1.4 這些測試是在結合家具或床墊外層組件的實驗室規(guī)模樣本上進行的。不包括框架元素。 1.5 以國際單位制表示的數值應視為標準。括號中給出的值僅供參考。 1.6 本標準用于測量和描述材料、產品或組件在受控條件下對熱量和火焰的響應,但其本身并不包括在實際火災條件下對材料、產品或組件進行火災危險或火災風險評估所需的所有因素。 1.7 本標準并非旨在解決與其使用相關的所有安全問題(如有)。 本標準的用戶有責任在使用前制定適當的安全、健康和環(huán)境實踐,并確定監(jiān)管限制的適用性。 有關具體的預防說明,請參閱第節(jié) 6. . 1.8 防火測試本身就很危險。在進行這些測試時,應采取適當的人員和財產保護措施。 1.9 本國際標準是根據世界貿易組織技術性貿易壁壘(TBT)委員會發(fā)布的《關于制定國際標準、指南和建議的原則的決定》中確立的國際公認標準化原則制定的。 ====意義和用途====== 5.1 本試驗方法用于確定材料和復合材料在錐形量熱計裝置中暴露于規(guī)定初始試驗熱流下的持續(xù)燃燒和熱釋放時間。 5.2 定量熱釋放測量提供了可用于軟墊和床墊產品設計和產品開發(fā)的信息。 5.3 熱釋放測量為產品開發(fā)提供了有用的信息,可以定量測量組件和復合材料修改引起的防火性能的具體變化。如果產品在相關火災暴露條件下未在其表面?zhèn)鞑セ鹧?,則本試驗方法中的熱釋放數據將無法預測產品行為。 5.4 測試限制- 如果出現(xiàn)以下任一情況,則測試數據無效:( 1. )爆炸剝落;或( 2. )試樣在點火前充分膨脹以接觸火花塞,或在燃燒過程中膨脹至加熱器底座平面。

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.

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