ASTM_D_7140_-_D_7140M_-_22.pdf

Designation:D7140/D7140M22Standard Test Method toMeasure Heat Transfer Through Textile Thermal BarrierMaterials1This standard is issued under the fixed designation D7140/D7140M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers the evaluation of heat transferof textile materials which are used as thermal barriers whenexposed to a calibrated convective and radiant energy heatsource for 60 s.1.1.1 This standard is used to determine if the heat transferis sufficient to ignite flammable materials which are contiguousto the textile thermal barriers.1.2 This standard is used as a means to differentiate textilematerials.1.3 This test method is not intended to measure the insula-tion properties of materials used in protective clothing.1.4 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system are not necessarily exact equivalents;therefore,toensure conformance with the standard,each system shall beused independently of the other,and values from the twosystems shall not be combined.1.5 This standard is used to measure and describe theresponse of materials,products,or assemblies to heat and flameunder controlled conditions,but does not by itself incorporateall factors required for fire hazard or fire risk assessment of thematerials,products or assemblies under actual fire conditions.1.6 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility 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.1.7 This international standard was developed in accor-dance with 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:2D123 Terminology Relating to TextilesD4391 Terminology Relating to The Burning Behavior ofTextiles2.2 Other Standards:Code of Federal Regulations Title 16 Consumer ProductSafety Commission Part 1633,Standard for the Flamma-bility of Mattress Sets33.Terminology3.1 The following terms are relevant to this standard:breakopen,charring,dripping,embrittlement,exposure energy tothermal end point,heat flux,ignition,melting,shrinkage.3.1.1 For all terminology relating to D13.52,Flammability,refer to Terminology D4391.3.2 For all terminology related to Textiles see TerminologyD123.4.Summary of Test Method4.1 A textile thermal barrier that is used to prevent transferof heat to flammable materials which are contiguous to thisbarrier are exposed to a controlled radiant and convective heatsource for 60 s.4.2 The heat transfer is measured using a data collectionsystem.4.3 Performance of thermal barrier textile material is deter-mined by the amount of heat transferred through the specimen.5.Significance and Use5.1 This test method measures the level of heat transferthrough the thermal barrier textile material within a specificperiod of time.1This standard is under the jurisdiction of ASTM Committee D13 on Textilesand is the direct responsibility of Subcommittee D13.52 on Flammability.Current edition approved Aug.1,2022.Published August 2022.Originallyapproved in 2005.Last previous edition approved in 2017 as D7140 13(2017).DOI:10.1520/D7140_D7140M-22.2For 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.3Available from U.S.Consumer Product Safety Commission(CPSC),4330 EastWest Hwy.,Bethesda,MD 20814,http:/www.cpsc.gov.Copyright 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.15.2 This test method is used to evaluate thermal barriers anddetermine if they are able to withstand impingement by anopen flame.5.2.1 This test method is used to evaluate heat transfer whenthermal barrier textile materials are used in conjunction withmaterials that demonstrate any of the following behaviorswhen exposed to high heat:break opencharringdrippingembrittlementignitionmeltingshrinkage5.3 This test method cannot be used in place of the full scaletes