1、Designation: D 2903 03An American National StandardStandard Specification forCrosslinked Chlorinated Polyolefin Heat-Shrinkable Tubingfor Electrical Insulation1This standard is issued under the fixed designation D 2903; the number immediately following the designation indicates the year oforiginal a
2、doption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers flexible crosslinked chlori-nated polyolef
3、in heat-shrinkable tubing used for electricalinsulating purposes. It is supplied in an expanded form and willshrink to the specified diameter when heated.NOTE 1This standard does not have a similar or equivalent IECstandard.1.2 The values stated in inch-pound units are to be regardedas the standard
4、accept for temperature, which is stated indegrees Celsius. SI values in parentheses are for informationonly.2. Referenced Documents2.1 ASTM Standards:D 412 Test Methods for Vulcanized Rubber and Thermo-plastic ElastomersTension2D 1711 Terminology Relating to Electrical Insulation3D 2671 Test Methods
5、 for Heat-Shrinkable Tubing for Elec-trical Use4D 3636 Practice for Sampling and Judging Quality of SolidElectrical Insulating Materials4E 176 Terminology of Fire Standards52.2 Military Standards:6MIL-H-5606 Hydraulic Fluid Petroleum Base, Aircraft,Missile and OrdnanceMIL-T-5624 Turbine Fuel, Aviati
6、on, Grades JP4 and JP5MIL-L-7808 Lubrication Oil, Aircraft, Turbine Engine,Synthetic 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 Federal Standards:SS-S-550 Sodium Chloride
7、, Technical, for Water SofteningUnits63. Terminology3.1 Definitions:3.1.1 For definitions pertaining to electrical insulation, referto Terminology D 1711.3.1.2 For definitions pertaining to fire issues, refer to Ter-minology E 176.3.2 Definitions of Terms Specific to This Standard:3.2.1 chlorinated
8、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 When ordering to this specifi
9、cation 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 compoundshall be free of fore
10、ign 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 conform to the chemic
11、al 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 March 10, 2003. P
12、ublished April 2003. Originallyapproved in 1970. Last previous edition approved in 1998 as D 2903 93 (1998).2Annual Book of ASTM Standards, Vol 09.01.3Annual Book of ASTM Standards, Vol 10.01.4Annual Book of ASTM Standards, Vol 10.02.5Annual Book of ASTM Standards, Vol 04.07.6Available from Naval Pu
13、blications and Forms Center, 5801 Tabor Ave.,Philadelphia, PA 19120.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.7.2 Every lot of material manufactured requires testing forflammability, but the other chemical property requirements
14、may be tested less frequently or with a frequency agreed uponby the purchaser and seller.8. Other Property Requirements8.1 The material 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 streng
15、th, and elongation, but other require-ments may be tested less frequently or with a frequency agreedupon by the purchaser 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
16、 heat-shrinkable tubing shall behomogeneous and free from flaws and defects and from foreignmatter that may 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
17、and submitted for inspectionat one time.11.2 Inspect a quantity of the end item selected at randomfrom each lot in accordance with Practice D 3636 and Table 1.12. Tests and Retests12.1 If the results of any test do not conform to therequirements prescribed in this specification, make two addi-tional
18、 tests on different specimens from the same lot.12.2 If the results of either of the two additional tests do notconform to the requirements, the lot of material may berejected at the option of the purchaser. A notice of nonconfor-mance of material based on tests made according to thisspecification s
19、hould be reported to the manufacturer promptlyand in writing.12.3 Rejected tubing may be replaced or reworked tocorrect the nonconformances and resubmitted for inspection.Before resubmitting, furnish to the inspector full particularsconcerning previous rejection and action taken to correct thenoncon
20、formances.13. Test Methods13.1 Use the test methods described in Test MethodsD 2671 unless stated otherwise in Table 2 or Table 3.13.2 To recover heat-shrinkable tubing in this specification,use a time of 10 min and a temperature of 175 6 1C (347 62F).14. Inspection14.1 The manufacturer or purchaser
21、, or both, shall haveavailable all the facilities to enable the complete testing to thisspecification.15. Certification15.1 When agreed upon in writing by the purchaser and aseller, a certification consists of the lot number and a copy ofthe manufacturers test report or a statement by the seller,acc
22、ompanied by a copy of the test results, that the material wassampled, tested and inspected in accordance with the provi-sions of the specification. An authorized agent of the seller andmanufacturer shall sign each certification.15.2 When original identity cannot be established, certifi-cation can on
23、ly be based on the sampling procedure as definedin Section 11.16. Packaging, Marking, and Shipping16.1 Supply the tubing on spools in lengths of 10 ft (3 m)minimum for all sizes unless otherwise specified.16.2 Package the tubing in conformance with standardcommercial practice unless otherwise specif
24、ied. Box each sizeseparately.16.3 Distinctly identify each container of tubing by a tag orlabel. Show the name of the manufacturer, the expanded andrecovered dimensions of the tubing, the length, quantity andother appropriate information.TABLE 1 Sampling Table for Lot Acceptance TestsPropertyRequire
25、-mentInspectionLevelAQLSampling Unitof Sleeving, ft(m)Inside diameter as suppliedInside diameter after unre-stricted shrinkageTable 4Table 4S-3S-31.01.04 (1.2)4 (1.2)Wall thickness after shrinkage Table 4 S-3 1.0 4 (1.2)Longitudinal change Table 4 S-2 1.0 4 (1.2)Straight length size, min 16.1 herein
26、 S-3 1.0 single straightlengthWorkmanship 10.1 herein I 4.0 4 (1.2)TABLE 2 Chemical RequirementsPropertyRequirementType I Type IICorrosionMethod A (copper mirror) 16 h at 150 6 2C(302 6 4F)no corrosion no corrosionMethod B (copper contact) 168 h at 1216 2C (250 6 4F)no pitting orblackeningno pitting
27、 orblackeningFollowed by test for:Ultimate elongation, min, %, 150Solvent resistance:Type IImmerse 24 h at 246 3C (756 5.4F)Type IIImmerse 24 h at 50 6 2C (122 64F)MIL-T-5624Grade JP-4 fuelMIL-L-7808Lubricating oilMIL-H-5606Hydraulic fluidSS-S-550 Sodium chloride, 5 % solutionMIL-A-8243Anti-icing fl
28、uidMIL-L-23699Lubricating oilMIL-G-5572Aviation gasoline 100/130AFollowed by tests for:Tensile strength, min, psi (MPa) 900 (6.2) 1000 (6.9)Ultimate elongation, min, %, 150 200Weight increase, % 25 25Flammability (Procedure A):Time of burning, max, sBurning distance, max, in.153153Water absorption24
29、 h at 24 6 3C (75 65.4F) by lot, max, %1.0 1.0APerform in gasoline at room temperature (24C) only.D290303217. Keywords17.1 crosslinked chlorinated polyolefin heat-shrinkabletubing; electrical insulation; heat-shrinkable tubingTABLE 3 Other Property RequirementsPropertyRequirementType I Type IIRestri
30、cted shrinkage, Procedure A1356 2C (275 6 4F) for 30 min2000 Vno cracking, no dielectric breakdown no cracking, no dielectric breakdownDielectric strength, V/mil (V/mm):14 in. through 134 in.2 in. and largerHeat shock:300 (11 800)200 (7870)300 (11 800)200 (7870)Type I at 150 6 2C (302 6 4F) no crack
31、ing, flowing, or drippingType II at 200 6 2C (392 6 4F) no cracking, flowing, or drippingLow-temperature flexibility:Procedure A for sizes14 through58Procedure C for sizes34 through 4Mandrels specified in Table 5TypeIat556 2C (67 6 4F)Type II at 706 2C (94 6 4F)no cracksno cracksTensile strength, mi
32、n, psi (MPa):Full sections of tubing for sizes14 through12: 1500 (10.3) 1500 (10.3)Die D, Test Methods D 412, for all larger sizesSpeed 20 in./min (500 mm/min)Ultimate elongation, min, % (Class 1) 225 225Simultaneous with tensile strengthHeat resistance:Type I at 100 6 2C (212 6 4F) for 96 hType II
33、at 121 6 2C (250 6 4F) for 168 hFollowed by tests for:Tensile strength, min, psi (MPa):Elongation, min, %:1200 (8.3)1501200 (8.3)175Volume resistivity, min Vcm,ASpecific gravity, max10101.510111.5Stress modulus (at 200 % strain), max,psi (MPa) 2500 (17.2) 2500 (17.2)Shelf lifeBmeet Table 4 requireme
34、nts meet Table 4 requirementsACondition the specimens for 24 h before making the volume resistivity measurement.BThe tubing shall meet Table 4 requirements under the following conditions: 1 month at 40C (104F), 4 months at 30C (86F), and 12 months at 21C (70F).TABLE 4 Dimensional Requirements (1.75
35、to 1 Shrink Ratio)As Supplied After Unrestricted ShrinkageNominal Size,in.Inside Diameter, min,in. (mm)Eccentricity,max, %Inside Diameter, max,in. (mm)Wall Thickness,in. (mm)Longitudinal Change,max, %14 0.250 (6.35) 40 0.143 (3.63) 0.035 6 0.010 (0.89 6 0.25) + 1, 1038 0.375 (9.52) 40 0.214 (5.44) 0
36、.040 6 0.010 (1.02 6 0.25) + 1, 1012 0.500 (12.7) 40 0.286 (7.26) 0.048 6 0.015 (1.22 6 0.38) + 1, 1058 0.625 (15.9) 40 0.357 (9.07) 0.052 6 0.015 (1.32 6 0.38) + 1, 1034 0.750 (19.0) 40 0.428 (10.9) 0.057 6 0.015 (1.45 6 0.38) + 1, 1078 0.875 (22.2) 40 0.500 (12.7) 0.065 6 0.015 (1.65 6 0.38) + 1,
37、101 1.00 (25.4) 40 0.570 (14.5) 0.0706 0.020 (1.78 6 0.51) + 1, 10114 1.25 (31.8) 40 0.714 (18.1) 0.087 6 0.020 (2.21 6 0.51) + 1, 10112 1.50 (38.1) 40 0.857 (21.8) 0.095 6 0.020 (2.41 6 0.51) + 1, 10134 1.75 (44.4) 40 1.000 (25.4) 0.107 6 0.020 (2.72 6 0.51) + 1, 102 2.00 (50.8) 40 1.140 (29.0) 0.1
38、106 0.020 (2.79 6 0.51) + 1, 103 3.00 (76.2) 40 1.710 (43.4) 0.1256 0.020 (3.18 6 0.51) + 1, 104 4.00 (101.6) 40 2.280 (57.9) 0.1406 0.020 (3.56 6 0.51) + 1, 10D2903033ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin t
39、his standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must
40、be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of there
41、sponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700,
42、West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).TABLE 5 Mandrel Sizes for Low-Temperature FlexibilityNominal Tubing Size, in. Mandrel Diameter, in. (mm)14516(8)38 to1238(10)34 to 2716(11)3to478(22)D2903034
