1、Designation:D290311Standard Specification forCrosslinked Chlorinated Polyolefin Heat-Shrinkable Tubingfor Electrical Insulation1This standard is issued under the fixed designation D2903;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision
2、,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 crosslinked chlori-nated polyolefin heat-shrinkable tubing used for electr
3、icalinsulating purposes.It is supplied in an expanded form and willshrink to the specified diameter when heated.NOTE1This standard does not have a similar or equivalent IECstandard.1.2 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematica
4、lconversions to SI units that are provided for information onlyand are not considered standard.1.2.1 In some cases,temperatures are described in degreesCelsius only.2.Referenced Documents2.1 ASTM Standards:2D412 Test Methods for Vulcanized Rubber and Thermoplas-tic ElastomersTensionD1711 Terminology
5、 Relating to Electrical InsulationD2671 Test Methods for Heat-Shrinkable Tubing for Elec-trical UseD3636 Practice for Sampling and Judging Quality of SolidElectrical Insulating MaterialsE176 Terminology of Fire Standards2.2 Military Standards:3MIL-H-5606 Hydraulic Fluid Petroleum Base,Aircraft,Mis-s
6、ile and OrdnanceMIL-T-5624 Turbine Fuel,Aviation,Grades JP4 and JP5MIL-L-7808 Lubrication Oil,Aircraft,Turbine Engine,Syn-thetic BaseMIL-L-23699 Lubrication Oil,Aircraft,Turbine Engines,Synthetic BaseMIL-A-8243 Anti-Icing and De-Icing Defrosting FluidMIL-G-5572 Fuel,Aviation,Grades 100 and 1302.3 Fe
7、deral Standards:SS-S-550 Sodium Chloride,Technical,for Water SofteningUnits33.Terminology3.1 Definitions:3.1.1 For definitions pertaining to electrical insulation,referto Terminology D1711.3.1.2 For definitions pertaining to fire issues,refer to Ter-minology E176.3.2 Definitions of Terms Specific to
8、 This Standard:3.2.1 chlorinated polyolefin,na polymer or polymerblend based on chlorinated polyolefin(s),chlorinated olefincopolymer(s)or chlorinated polybutadiene polymer(s).4.Classification4.1 Type INormal operating temperature.4.2 Type IIExtended operating temperature.5.Ordering Information5.1 W
9、hen ordering to this specification the purchaser muststate the type,class,and size of the tubing required.6.Materials and Manufacture6.1 The compound used in the manufacture of this heat-shrinkable tubing shall be based on chlorinated polyolefin asdefined in Section 3,Terminology.The finished compou
10、ndshall be free of foreign matter other than antioxidants,flameretardants,processing aids,crosslinking agents,pigments orother additives as appropriate.6.2 The tubing shall be extruded,crosslinked and thenexpanded to the required dimensions.7.Chemical Property Requirements7.1 The material shall conf
11、orm to the chemical requirementsspecified in Tables 1 and 2.1This specification is under the jurisdiction of ASTM Committee D09 onElectrical and Electronic Insulating Materials and is the direct responsibility ofSubcommittee D09.07 on Flexible and Rigid Insulating Materials.Current edition approved
12、Aug.1,2011.Published August 2011.Originallyapproved in 1970.Last previous edition approved in 2003 as D2903 03.DOI:10.1520/D2903-11.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume informatio
13、n,refer to the standards Document Summary page onthe ASTM website.3Available from Naval Publications and Forms Center,5801 Tabor Ave.,Philadelphia,PA 19120.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocke
14、n,PA 19428-2959.United States1 7.2 Every lot of material manufactured requires testing forflammability,but testing for all the other chemical propertyrequirements shall be conducted less frequently or at a fre-quency agreed upon by the purchaser and seller.8.Other Property Requirements8.1 The materi
15、al shall conform to the mechanical,thermal,and electrical requirements of Table 3.8.2 Every lot of material manufactured shall be tested forheat shock,tensile strength,and elongation,but testing for allother requirements shall be conducted less frequently or at afrequency agreed upon by the purchase
16、r and seller.9.Dimensional Requirements9.1 Both Type I and Type II tubing shall conform to thedimensional requirements of Tables 4 and 5.10.Workmanship10.1 Chlorinated polyolefin heat-shrinkable tubing shall behomogeneous and free from flaws and defects and from foreignmatter that have the potential to compromise its performance.11.Sampling11.1 A lot is defined as that material which is processed atthe same time and under essentially the same conditions inaccordance with this specification and s