1、Designation:E296517An American National StandardStandard Test Method forDetermination of Low Levels of Heat Release Rate forMaterials and Products Using an Oxygen ConsumptionCalorimeter1This standard is issued under the fixed designation E2965;the number immediately following the designation indicat
2、es the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This fire-test-response standard provides a procedu
3、re formeasuring the response of materials that emit low levels of heatrelease when exposed to controlled levels of radiant heatingwith or without an external igniter.1.2 This test method differs from Test Method E1354 in thatit prescribes a different specific test specimen size,specimenholder,test s
4、pecimen orientation,a direct connection betweenthe plenum and the top plate of the cone heater assembly toensure complete collection of all the combustion gases(Fig.1),and a lower volumetric flow rate for analyses via oxygenconsumption calorimetry.It is intended for use on materialsand products that
5、 contain only small amounts of combustibleingredients or components,such as test specimens that yield apeak heat release of 200 kWm2and total heat release of15 MJm2.NOTE1PMMA is typically used to check the general operation of aCone Calorimeter.PMMA should not be used with this standard as theheat r
6、elease rate is too high.1.3 The rate of heat release is determined by measurementof the oxygen consumption as determined by the oxygenconcentration and the flow rate in the exhaust product stream.The effective heat of combustion is determined from a con-comitant measurement of test specimen mass los
7、s rate,incombination with the heat release rate.Smoke development(anoptional measurement)is measured by obscuration of light bythe combustion product stream.1.4 Test specimens shall be exposed to initial test heat fluxesgenerated by a conical radiant heater.External ignition,whenused,shall be by ele
8、ctric spark.The test specimen testingorientation is horizontal,independent of whether the end-useapplication involves a horizontal or a vertical orientation.1.5 Ignitability is determined as a measurement of timefrom initial exposure to time of sustained flaming.1.6 This test method has been develop
9、ed for use for materialand product evaluations,mathematical modeling,designpurposes,and development and research.Examples of materialtest specimens include portions of an end-use product or thevarious components used in the end-use product.1.7 The values stated in SI units are to be regarded asstand
10、ard.No other units of measurement are included in thisstandard.1.8 This standard is used to measure and describe theresponse of materials,products,or assemblies to heat andflame under controlled conditions,but does not by itselfincorporate all factors required for fire hazard or fire riskassessment
11、of the materials,products,or assemblies underactual fire conditions.1.9 Fire testing is inherently hazardous.Adequate safe-guards for personnel and property shall be employed inconducting these tests.1.10 This standard does not purport to address all of thesafety concerns,if any,associated with its
12、use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.For specific hazardstatements,see Section 7.1.11 This international standard was developed in accor-dance with intern
13、ationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:D5865 Test
14、Method for Gross Calorific Value of Coal andCokeE176 Terminology of Fire StandardsE603 Guide for Room Fire ExperimentsE906 Test Method for Heat and Visible Smoke ReleaseRates for Materials and Products Using a ThermopileMethodE1354 Test Method for Heat and Visible Smoke Release1This test method is u
15、nder the jurisdiction of ASTM Committee E05 on FireStandards and is the direct responsibility of Subcommittee E05.23 on Combustibil-ity.Current edition approved Aug.1,2017.Published August 2017.Originallyapproved in 2015.Last previous edition approved in 2016 as E2965-16a.DOI:10.1520/E2965-17.*A Sum
16、mary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 Rates for Materia