1、Designation:D290221An American National StandardStandard Specification forFluoropolymer Resin Heat-Shrinkable Tubing for ElectricalInsulation1This standard is issued under the fixed designation D2902;the number immediately following the designation indicates the year oforiginal adoption or,in the ca
2、se of revision,the year 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.1.Scope*1.1 This specification applies to flexible heat-shrinkableextruded tubing made from tetrafluoroethy
3、lene resin,copoly-mer of tetrafluoroethylene and hexafluoropropylene,and fromperfluoroalkoxy resin for use as electrical insulation.Thisspecification excludes crosslinked poly(vinylidene fluoride)and poly(vinylidene fluoride)copolymer which are coveredunder Specification D3144.NOTE1This standard is
4、similar but not identical to IEC 60684-3-240.1.2 The values stated in inch-pound units are to be regardedas standard,except temperature,which shall be stated indegrees Celsius.The values given in parentheses are math-ematical conversions to SI units that are provided for informa-tion only and are no
5、t considered standard.1.3 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
6、 TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2C618 Specification for Coal Fly Ash and Raw or CalcinedNatural Pozzolan for Use in ConcreteD638 Test Method for Tensile Properties of PlasticsD1711 Terminology Relating to Electrical InsulationD2116 Specification for
7、 FEP Resin Molding and ExtrusionMaterialsD2671 Test Methods for Heat-Shrinkable Tubing for Elec-trical UseD3144 Specification for Crosslinked Poly(Vinylidene Fluo-ride)Heat-Shrinkable Tubing for Electrical InsulationD3307 Specification for Perfluoroalkoxy(PFA)Resin Mold-ing and Extrusion MaterialsD3
8、636 Practice for Sampling and Judging Quality of SolidElectrical Insulating MaterialsD4895 Specification for Polytetrafluoroethylene(PTFE)Resin Produced From DispersionE176 Terminology of Fire Standards2.2IEC Standards:3IEC 60684-3-240 Flexible insulating sleeving-Part 3:Specifications for individua
9、l types of sleeving-Sheets240 to 243:Heat-shrinkable PTFE sleeving3.Terminology3.1 Definitions:3.1.1 For definitions pertaining to electrical insulation,referto Terminology D1711.3.1.2 For definitions pertaining to fire standards,refer toTerminology E176.4.Classification4.1 Type ITubing made from te
10、trafluoroethylene polymer(TFE)and capable of being heat shrunk at a temperature of327 C(621 F).4.2 Type IITubing made from a copolymer of tetrafluoro-ethylene and hexafluoropropylene(FEP)and capable of beingheat shrunk at a temperature of 150 C(302 F).4.3 Type IIITubing made from perfluoroalkoxy res
11、in(PFA)and capable of being heat shrunk at a temperature of175 C(347 F).5.Ordering Information5.1 When ordering to this specification,the purchaser muststate the size,and type of the required tubing.1This specification is under the jurisdiction of ASTM Committee D09 onElectrical and Electronic Insul
12、ating Materials and is the direct responsibility ofSubcommittee D09.07 on Electrical Insulating Materials.Current edition approved March 1,2021.Published May 2021.Originallyapproved in 1970.Last previous edition approved in 2013 as D2902 00(2013)1.DOI:10.1520/D2902-21.2For referenced ASTM standards,
13、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 American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 1
14、0036,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 StatesThis international standard was developed in accordance with internationally recognized principles on s
15、tandardization 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.16.Materials and Manufacture6.1 The compound used in the manufacture of this tubingshall
16、be modified fluoropolymer resin,and the finished com-pound shall be free of all foreign matter other than intendedformulation additives as appropriate.6.2 Type I tubing is normally made by paste extrusion.TypeII and Type III tubings are normally made by melt extrusion.All types are expanded by mechanical means.7.Chemical and Physical Property Requirements7.1 The material shall conform to the chemical and physicalproperty requirements specified in Table 1.7.2 Every lot of material manufactured sh
