1、Designation:D5025121Standard Specification forLaboratory Burner Used for Small-Scale Burning Tests onPlastic Materials1This standard is issued under the fixed designation D5025;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year
2、 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.1NOTEEditorially corrected Fig.1 in September 2015.1.Scope*1.1 This specification covers the physical dimensions andcharacteristic
3、s of a laboratory burner to be used as an ignitionsource for small-scale burning tests on plastic materials.Theburner is used with methane,propane,or butane supply gasesfor flame heights of 20 to 125 mm.1.2 Fire testing of products and materials is inherentlyhazardous,and adequate safeguards for per
4、sonnel and prop-erty shall be employed in conducting these tests.1.3 The burner described in this specification is suitable foruse in the followingASTM standards:Specification C509,TestMethod D229,Test Method D635,Test Method D876,TestMethod D3014,Test Method D3801,Test Method D4804,TestMethod D4986
5、,and Test Method D5048.Safety hazards andknown limitations on applicability of fire-test-response stan-dards are addressed in the individual test methods.NOTE1This specification is equivalent to the ignition source specifiedin IEC 60695-11-3,Annex A and IEC 60695-11-4,Annex A.NOTE2This specification
6、 is equivalent to the P/PF2 ignition sourcespecified in ISO 10093.2.Referenced Documents2.1 ASTM Standards:2C509 Specification for Elastomeric Cellular Preformed Gas-ket and Sealing MaterialD229 Test Methods for Rigid Sheet and Plate MaterialsUsed for Electrical InsulationD635 Test Method for Rate o
7、f Burning and/or Extent andTime of Burning of Plastics in a Horizontal PositionD876 Test Methods for Nonrigid Vinyl Chloride PolymerTubing Used for Electrical InsulationD883 Terminology Relating to PlasticsD1600 Terminology forAbbreviated Terms Relating to Plas-ticsD3014 Test Method for Flame Height
8、,Time of Burning,andLoss of Mass of Rigid Thermoset Cellular Plastics in aVertical PositionD3801 Test Method for Measuring the Comparative BurningCharacteristics of Solid Plastics in a Vertical PositionD4804 Test Method for Determining the Flammability Char-acteristics of Nonrigid Solid PlasticsD498
9、6 Test Method for Horizontal Burning Characteristicsof Cellular Polymeric MaterialsD5048 Test Method for Measuring the Comparative BurningCharacteristics and Resistance to Burn-Through of SolidPlastics Using a 125-mm FlameD5207 Practice for Confirmation of 20mm(50W)and125mm(500W)Test Flames for Smal
10、l-Scale BurningTests on Plastic MaterialsE176 Terminology of Fire Standards2.2 ISO Standards:3ISO 10093 PlasticsFire TestsStandard Ignition Sources2.3 IEC Standards:3IEC TS 60695-11-3 Fire Hazard TestingPart 11-3:TestFlames50W FlamesApparatus and ConfirmationalTest MethodsIEC TS 60695-11-4 Fire Haza
11、rd TestingPart 11-4:TestFlames500W FlamesApparatus and ConfirmationalTest Methods3.Terminology3.1 DefinitionsFor terms relating to plastics,the defini-tions are in accordance with Terminology D883,and theabbreviations are in accordance with Terminology D1600.Forterms relating to fire,the definitions
12、 are in accordance withTerminology E176.1This specification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.30 on ThermalProperties.Current edition approved Aug.1,2012.Published September 2012.Originallyapproved in 1989.Last previous ed
13、ition approved in 2011 as D5025-05.DOI:10.1520/D5025-12E01.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Availa
14、ble from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.*A Summary 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 States1 4.Design4.1
15、 The burner shall consist of a barrel that threads onto aone-piece base and gas inlet,as shown in Fig.1.Thecomponents shall be constructed of metal,typically of brass oraluminum.4.1.1 Burner BarrelThe burner barrel shall consist of amixing tube and threaded air-inlet adapter.The mixing tubeshall be
16、of seamless construction,with an inside diameter of9.5 6 0.3 mm.The length of the barrel from the top of theair-inlet openings to the top of the mixing tube shall be100 6 10 mm.The top of the mixing tube shall not beequipped with end attachments,such as stabilizers.The air-inlet adapter,located at the bottom of the mixing tube,shall beapproximately 25 mm high and 20 mm in overall diameter.Theminimum area of the air-inlet openings shall be 225 mm2distributed equidistant around the adapter.With th