1、Designation:D314906(Reapproved 2013)Standard Specification forCrosslinked Polyolefin Heat-Shrinkable Tubing for ElectricalInsulation1This standard is issued under the fixed designation D3149;the number immediately following the designation indicates the year oforiginal adoption or,in the case of rev
2、ision,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 covers flexible and semirigid cross-linked polyolefin heat-shrinkable tubing used for
3、 electricalinsulating purposes.It is supplied in an expanded form and willshrink to its extruded diameter when heated.NOTE1This standard is similar to but not identical to IEC606843209,211 and 212.1.2 The values stated in inch-pound units are to be regardedas the standard except temperature,which sh
4、all be stated indegrees Celsius.Values in parentheses are for information only.2.Referenced Documents2.1 ASTM Standards:2D910 Specification for Aviation GasolinesD1711 Terminology Relating to Electrical InsulationD2671 Test Methods for Heat-Shrinkable Tubing for Elec-trical UseD3636 Practice for Sam
5、pling and Judging Quality of SolidElectrical Insulating MaterialsE176 Terminology of Fire Standards2.2 Military Standards:3MIL-STD-104 Limits for Electrical Insulation ColorMIL-H-5606 Hydraulic Fluid,Petroleum Base,Aircraft,Missile,and OrdnanceMIL-T-5624 Turbine Fuel,Aviation,Grades JP4 and JP5MIL-L
6、-7808 Lubricating Oil,Aircraft,Turbine Engine,Syn-thetic BaseMIL-L-23699 Lubricating Oil,Aircraft,Turbine Engines,Synthetic BaseMIL-A-8243 Anti-Icing and De-Icing Defrosting Fluid2.3 Federal Standards:SS-S-550 Sodium Chloride,Technical,for Water-SofteningUnits42.4IEC Standards:606843209 Flexible ins
7、ulating sleeving,Part 3,Sheet 209:Heat-shrinkable sleeving,general purpose,flame retardedpolyolefin,shrink ratio 2:15606843211 Flexible insulating sleeving,Part 3,Sheet 211:Heat-shrinkable sleeving,general purpose,semi-rigidpolyolefin,shrink ratio 2:15606843212 Flexible insulating sleeving,Part 3,Sh
8、eet 212:Heat-shrinkable polyolefin sleeving,general purpose,flame retarded,shrink ratio 2:153.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
9、 Type IFlexible,flame-retardant,opaque polyolefintubing with a secant modulus at 2%strain less than 25 000 psi(172 MPa).4.2 Type IIFlexible,non-flame-retardant,clear or opaquepolyolefin tubing with a secant modulus at 2%strain less than25 000 psi(172 MPa).4.3 Type IIISemi-rigid,flame-retardant,opaqu
10、e polyolefintubing with a secant modulus at 2%strain greater than 25 000psi(172 MPa).4.4 Type IVSemi-rigid,non-flame-retardant,clear oropaque polyolefin tubing with a secant modulus at 2%straingreater than 25 000 psi(172 MPa).1This specification is under the jurisdiction of ASTM Committee D09 onElec
11、trical and Electronic Insulating Materials and is the direct responsibility ofSubcommittee D09.07 on Flexible and Rigid Insulating Materials.Current edition approved Aug.15,2013.Published August 2013.Originallyapproved in 1972.Last previous edition approved in 2006 as D3149 06.DOI:10.1520/D3149-06R1
12、3.2For 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 Standardization Documents Order Desk,Bldg.4 Sect
13、ion D,700Robbins Ave.,Philadelphia,PA 19111-5094,Attn:NPODS.4May be obtained from Superintendent of Documents,U.S.GovernmentPrinting Office,Washington,DC 20402.5Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036.*A Summary of Changes section appears
14、at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.Ordering Information5.1 When tubing is ordered to this specification,the pur-chaser should define the type,size,and color of the requiredtubing.6.Materials and M
15、anufacture6.1 The compound used in the manufacture of heat-shrinkable tubing shall be modified polyolefin resin,and thefinished compound shall be free of all foreign matter other thanintended formulation additives as appropriate.6.2 The tubing shall be extruded,cross-linked,and thenexpanded to the r
16、equired dimensions.7.Chemical Property Requirements7.1 The material shall conform to the chemical requirementsspecified in Table 1.7.2 Every lot of Type I and Type III material manufacturedshall be tested for flammability.Other chemical requirementsmay be tested less frequently or at a frequency agreed upon bythe purchaser and supplier.8.Physical Property Requirements8.1 The material shall conform to the color,mechanical,thermal,and electrical requirements of Table 2.8.2 Every lot of material ma
