1、Designation:D481913(Reapproved 2021)1Standard Specification forFlexible Cellular Materials Made From Polyolefin Plastics1This standard is issued under the fixed designation D4819;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the ye
2、ar 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.1NOTEReapproved and editorially revised in July 2021.1.Scope*1.1 This specification applies to flexible closed-cell materi-als m
3、ade from polyolefin plastics and blends of polyolefinplastics as defined in Section 3.1.2 Extruded or molded shapes too small to permit thecutting of standard test specimens are difficult to classify or testby standard test methods and will usually require specialtesting procedures or the use of sta
4、ndard test sheets.1.3 In case of conflict between the provisions of thisspecification and those of detailed specifications for a particu-lar product,the latter shall take precedence.These detailedspecifications for the flexible closed-cell polyolefin plasticfoams shall state the particular test or t
5、ests desired.1.4 In cases involving referee decisions,SI units shall beused.1.5 This specification does not contain test procedures orvalues for all the suffix letters listed in Table 1 and Table 2.Where the procedure is not described in this specification orspecial limits are desired,or both,the te
6、st procedures andvalues must be arranged between the purchaser and thesupplier.1.6 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.NOTE1There is no known ISO equivalent to this standard.1.7 This international standard was develo
7、ped 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 Documents
8、2.1 ASTM Standards:2C518 Test Method for Steady-State Thermal TransmissionProperties by Means of the Heat Flow Meter ApparatusD412 Test Methods for Vulcanized Rubber and Thermoplas-tic ElastomersTensionD624 Test Method for Tear Strength of Conventional Vul-canized Rubber and Thermoplastic Elastomers
9、D1596 Test Method for Dynamic Shock Cushioning Char-acteristics of Packaging MaterialD2863 Test Method for Measuring the Minimum OxygenConcentration to Support Candle-Like Combustion ofPlastics(Oxygen Index)D3575 Test Methods for Flexible Cellular Materials Madefrom Olefin PolymersE96/E96M Test Meth
10、ods for Water Vapor Transmission ofMaterialsF355 Test Method for ImpactAttenuation of Playing SurfaceSystems,Other Protective Sport Systems,and MaterialsUsed for Athletics,Recreation and Play2.2 Federal Motor Vehicle Safety Standard:49 CFR 571.302-Standard No.302 Flammability of VehicleInterior Mate
11、rialsPassenger Cars,Multipurpose Passen-ger Vehicles,Trucks and Buses32.3 UL Standard:UL1191 Standard for Components for Personal FlotationDevices43.Terminology3.1 Definitions:3.1.1 blendmixture of polyolefin plastic(s)with otherpolymer(s)in which at least 51 mass%is the polyolefinplastic(s).1This s
12、pecification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.22 on CellularMaterials-Plastics and Elastomers.Current edition approved July 1,2021.Published July 2021.Originally approvedin 1988.Last previous edition approved in 2013 as D
13、4819-13.DOI:10.1520/D4819-13R21.2For 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 Superintendent of
14、Documents,U.S.Government PrintingOffice,Washington DC,20402-9371(website:hazmat.dot.gov),or https:/www.ecfr.gov/cgi-bin/ECFR?page=browse4Available from Underwriters Laboratories(UL),Corporate Progress,333Pfingsten Rd.,Northbrook,IL 60062.*A Summary of Changes section appears at the end of this stand
15、ardCopyright 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 Interna
16、tional Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.13.1.2 polyolefin plasticsmaterial based on polymers madeby the polymerization of olefins or copolymerization of olefinswith other polymers,the polyolefin being at least 51 mass%.3.1.3 resinsolid,semi-solid,or pseudo-solid organic ma-terial that has an indefinite and often high molecular weight,exhibits a tendency to flow when subject to stress,usually hasa softening or me
