1、Designation:D284322Standard Test Method forDensity of Smoke from the Burning or Decomposition ofPlastics1This standard is issued under the fixed designation D2843;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revis
2、ion.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This fire-test-response test method covers a la
3、boratoryprocedure for measuring and observing the relative amounts ofsmoke obscuration produced by the burning or decompositionof plastics.It is intended to be used for measuring thesmoke-producing characteristics of plastics under controlledconditions of combustion or decomposition.Correlation with
4、other fire conditions is not implied.The measurements aremade in terms of the loss of light transmission through acollected volume of smoke produced under controlled,stan-dardized conditions.The apparatus is constructed so that theflame and smoke is observable during the test.21.2 During the course
5、of combustion,gases or vapors,orboth,are evolved that are potentially hazardous to personnel.Adequate precautions shall be taken to protect the operator.1.3 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationpurposes only.1.4 This stand
6、ard 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 of the materials,products,or assemblies underactual fire conditions.1.5 Fire
7、testing is inherently hazardous.Adequate safe-guards for personnel and property shall be employed inconducting these tests.Specific safety warning statements aregiven in 1.2 and 9.13.1.6 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is therespo
8、nsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.NOTE1There is no known ISO equivalent to this standard.1.7 This international standard was developed in accor-dance with
9、internationally 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:3D618
10、 Practice for Conditioning Plastics for TestingD883 Terminology Relating to PlasticsD1600 Terminology forAbbreviated Terms Relating to Plas-ticsE84 Test Method for Surface Burning Characteristics ofBuilding MaterialsE176 Terminology of Fire StandardsE456 Terminology Relating to Quality and Statistic
11、sE662 Test Method for Specific Optical Density of SmokeGenerated by Solid MaterialsE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test MethodE906/E906M Test Method for Heat and Visible SmokeRelease Rates for Materials and Products Using a Ther-mopile MethodE1354
12、 Test Method for Heat and Visible Smoke ReleaseRates for Materials and Products Using an Oxygen Con-sumption CalorimeterE2935 Practice for Evaluating Equivalence of Two TestingProcesses2.2 ISO Standards:4ISO 13943 Fire SafetyVocabulary1This test method is under the jurisdiction of ASTM Committee D20
13、 on Plasticsand is the direct responsibility of Subcommittee D20.30 on Thermal Properties-(Section D20.30.03).Current edition approved March 15,2022.Published March 2022.Originallyapproved in 1970.Last previous edition approved in 2019 as D2843-19.DOI:10.1520/D2843-22.2Anonymous,“A Method of Measuri
14、ng Smoke Density,”NFPA Quarterly,QNFPA,Vol 57,January 1964,p.276.Reprint NFPA Q57-9.Available from NFPA,60 Batterymarch St.,Boston,MA 02110.3For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume in
15、formation,refer to the standards Document Summary page onthe ASTM website.4Available from International Organization for Standardization(ISO),ISOCentral Secretariat,BIBC II,Chemin de Blandonnet 8,CP 401,1214 Vernier,Geneva,Switzerland,http:/www.iso.org.*A Summary of Changes section appears at the en
16、d 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.13.Terminology3.1 DefinitionsFor definitions of terms relati
