1、Designation:D481913Standard 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 year of last revisio
2、n.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 specification applies to flexible closed-cell materi-als made from polyolefin plastics and blends of polyolefinplastics as define
3、d 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 standard test sheets.1.3 In case of conflict between the provisions of thi
4、sspecification 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 tests desired.1.4 In cases involving referee decisions,SI units shall be
5、used.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 test procedures andvalues must be arranged between the purchaser and thes
6、upplier.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.2.Referenced Documents2.1 ASTM Standards:2C518 Test Method for Steady-State Thermal TransmissionProperties by Mea
7、ns 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 ElastomersD1596 Test Method for Dynamic Shock Cushioning Char-acteristics of Packaging MaterialD2863
8、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 Methods for Water Vapor Transmission ofMaterialsF355 Test Method for ImpactAttenuation of Playi
9、ng SurfaceSystems and Materials2.2 Motor Vehicle Safety Standard:MVSS-302 Flammability of Vehicle Interior MaterialsPassenger Cars,Multipurpose Passenger Vehicles,Trucksand Buses32.3 UL Standard:UL1191 Standard for Components for Personal FlotationDevices43.Terminology3.1 Definitions:3.1.1 blendmixt
10、ure of polyolefin plastic(s)with otherpolymer(s)in which at least 51 mass%is the polyolefinplastic(s).3.1.2 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,sem
11、i-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 melting range,and usually fractures conchoid-ally.4.Classification(Types,Suffix Letters,and SuffixNumbers)4.1 TypesThis specif
12、ication covers two types of flexible,closed-cell polyolefin foams designated as follows:1This specification 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 Sept.1,
13、2013.Published September 2013.Originallyapproved in 1988.Last previous edition approved in 2005 as D4819-96(2005).DOI:10.1520/D4819-13.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume informa
14、tion,refer to the standards Document Summary page onthe ASTM website.3Available from Department of Transportation,Washington,DC.4Available from Underwriters Laboratories(UL),Corporate Progress,333Pfingsten Rd.,Northbrook,IL 60062.*A Summary of Changes section appears at the end of this standardCopyr
15、ight ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.1.1 Type IClosed cell foams made with polyolefinplastics and either chemically or radiation crosslinked.4.1.2 Type IIClosed cell foams made with polyolefinplastics that are non-crosslinked.4.2
16、Suffx LettersSuffix letters shall be added to the typedesignation(4.1)singly or in combination to indicate thenecessary requirements.4.2.1 The significance of the approved suffix letters is givenin Table 1.4.2.2 Frequently used suffix letters for polyolefin foams aregiven in Table 2.Where more than one test method exists fora given property,the suffix letters shall be followed immedi-ately by a subscript number to designate the specific procedure.4.3 Suffx NumbersEach suffix letter shall be foll
