1、Designation: D2903 11D2903 18Standard 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
2、 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 covers flexible crosslinked chlorinated polyolefin heat-shrinkable tubin
3、g used for electrical insulatingpurposes. It is supplied in an expanded form and will shrink to the specified diameter when heated.NOTE 1This standard does not have a similar or equivalent IEC standard.1.2 The values stated in inch-pound units are to be regarded as standard. The values given in pare
4、ntheses are mathematicalconversions to SI units that are provided for information only and are not considered standard.1.2.1 In some cases, temperatures are described in degrees Celsius only.1.3 This international standard was developed in accordance with internationally recognized principles on sta
5、ndardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2D412 Test Methods for Vulcanized Rubber and Th
6、ermoplastic ElastomersTensionD1711 Terminology Relating to Electrical InsulationD2671 Test Methods for Heat-Shrinkable Tubing for Electrical UseD3636 Practice for Sampling and Judging Quality of Solid Electrical Insulating MaterialsE176 Terminology of Fire Standards2.2 Military Standards:3MIL-H-5606
7、 Hydraulic Fluid Petroleum Base, Aircraft, Missile and OrdnanceMIL-T-5624 Turbine Fuel, Aviation, 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
8、FluidMIL-G-5572 Fuel, Aviation, Grades 100 and 1302.3 Federal Standards:SS-S-550 Sodium Chloride, Technical, for Water Softening Units33. Terminology3.1 Definitions:3.1.1 For definitions pertaining to electrical insulation, refer to Terminology D1711.3.1.2 For definitions pertaining to fire issues,
9、refer to Terminology E176.3.2 Definitions of Terms Specific to This Standard:3.2.1 chlorinated polyolefin, na polymer or polymer blend based on chlorinated polyolefin(s), chlorinated olefin copolymer(s)or chlorinated polybutadiene polymer(s).1 This specification is under the jurisdiction of ASTM Com
10、mittee D09 on Electrical and Electronic Insulating Materials and is the direct responsibility of SubcommitteeD09.07 on Electrical Insulating Materials.Current edition approved Aug. 1, 2011May 1, 2018. Published August 2011May 2018. Originally approved in 1970. Last previous edition approved in 20032
11、011 asD2903 03.D2903 11. DOI: 10.1520/D2903-11.10.1520/D2903-18.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM websi
12、te.3 Available from Naval Publications and Forms Center, 5801 Tabor Ave., Philadelphia, PA 19120.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically p
13、ossible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standard
14、Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States14. Classification4.1 Type INormal operating temperature.4.2 Type IIExtended operating temperature.5. Ordering Information5.1 When ordering to this specification the purchaser must state
15、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 as definedin Section 3, Terminology. The finished compound shall be free of foreign matter other than antioxid
16、ants, flame retardants,processing aids, crosslinking agents, pigments or other additives as appropriate.6.2 The tubing shall be extruded, crosslinked and then expanded to the required dimensions.6.3 Conditioning:6.3.1 Unless otherwise specified, all testing for this standard, except flammability, sh
17、all be conducted at 23 65C (73 6 9F)and a relative humidity of 50 610 % RH. Flammability testing shall be conducted in still air at a temperature of 15 35C (59 95C) and a relative humidity of 75 %. All samples shall be preconditioned at 23 6 5C (73 6 9F) and a relative humidityof 50 6 10 % RH. for a
18、 minimum of 30 minutes prior to test.7. Chemical Property Requirements7.1 The material shall conform to the chemical requirements specified in Tables 1 and 2.7.2 Every lot of material manufactured requires testing for flammability, but testing for all the other chemical propertyrequirements shall be
19、 conducted less frequently or at a frequency agreed upon by 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 for heat shock, tensile strength
20、, and elongation, but testing for all otherrequirements shall be conducted less frequently or at a frequency agreed upon by the purchaser and seller.9. Dimensional Requirements9.1 Both Type I and Type II tubing shall conform to the dimensional requirements of Tables 4 and 5.10. Workmanship10.1 Chlor
21、inated polyolefin heat-shrinkable tubing shall be homogeneous 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 at the same time and under essentially the same conditions
22、inaccordance with this specification and submitted for inspection at one time.11.2 Inspect a quantity of the end item selected at random from each lot in accordance with Practice D3636 and Table 1.12. Tests and Retests12.1 If the results of any test do not conform to the requirements prescribed in t
23、his specification, make two additional tests ondifferent specimens from the same lot.TABLE 1 Sampling Table for Lot Acceptance TestsProperty Require-ment InspectionLevel AQLSampling Unitof Sleeving, ft(m)Inside diameter as suppliedInside diameter after unre-stricted shrinkageTable 4Table 4S-3S-31.01
24、.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 S-3 1.0 single straightlengthWorkmanship 10.1 herein I 4.0 4 (1.2)D2903 18212.2 If the results of either of the two additional tests do not conform t
25、o the requirements, the purchaser is entitled to reject thelot of material.Anotice of nonconformance of material based on tests made according to this specification shall be reported to themanufacturer promptly and in writing.12.3 It is acceptable to replace or rework rejected tubing to correct the
26、nonconformances and then resubmit for inspection.Before resubmitting, furnish to the inspector full particulars concerning previous rejection and action taken to correct thenonconformances.13. Test Methods13.1 Use the test methods described in Test Methods D2671 unless stated otherwise in Table 2 or
27、 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 6 2F).TABLE 2 Chemical RequirementsProperty RequirementType I Type IICorrosion Method A (copper mirror) 16 h at150 2C (302 4F)no corrosion no corrosionMethod B (copper conta
28、ct) 168 h at 121 2C (250 4F) no pitting orblackeningno pitting orblackeningFollowed by test for:Ultimate elongation, min, %,150Solvent resistance:Type IImmerse 24 h at 24 3C (75 5.4F)Type IIImmerse 24 h at 50 2C (122 4F)MIL-T-5624Grade JP-4 fuelMIL-L-7808Lubricating oilMIL-H-5606Hydraulic fluidSS-S-
29、550 Sodium chloride, 5 % solutionMIL-A-8243Anti-icing fluidMIL-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,
30、max, sBurning distance, max, in.153153Water absorption24 h at 24 3C (75 5.4F) by lot, max, % 1.0 1.0TABLE 2 Chemical RequirementsProperty RequirementType I Type IICorrosionMethod A (copper mirror) 16 h at 150 2C (302 4F) no corrosion no corrosionMethod B (copper contact) 168 h at 121 2C (250 4F) no
31、pitting orblackeningno pitting orblackeningFollowed by test for:Ultimate elongation, min, % 150Solvent resistance:Type IImmerse 24 h at 24 3C (75 5.4F)Type IIImmerse 24 h at 50 2C (122 4F)MIL-T-5624Grade JP-4 fuelMIL-L-7808Lubricating oilMIL-H-5606Hydraulic fluidSS-S-550Sodium chloride, 5 % solution
32、MIL-A-8243Anti-icing fluidMIL-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, s 15 15Burningdistance, max,
33、in.3 3Water absorption24 h at 24 3C (75 5.4F) by lot, max, % 1.0 1.0A Perform in gasoline at room temperature (24C) only.D2903 18314. Inspection14.1 The manufacturer or purchaser, or both, shall have available all the facilities to enable the complete testing to thisspecification.TABLE 3 Other Prope
34、rty RequirementsProperty RequirementType I Type IIRestricted shrinkage, Procedure A135 2C (275 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
35、 800)200 (7870)Type I at 150 2C (302 4F) no cracking, flowing, or drippingType II at 200 2C (392 4F) no cracking, flowing, or drippingLow-temperature flexibility:Procedure A for sizes 14 through 58Procedure C for sizes 34 through 4Mandrels specified in Table 5Type I at -55 2C (-67 4F)Type II at -70
36、2C (-94 4F)no cracksno cracksTensile strength, min, psi (MPa):Full sections of tubing for sizes 14 through 12 : 1500 (10.3) 1500 (10.3)Die D, Test Methods D412, for all larger sizesSpeed 20 in./min (500 mm/min)Ultimate elongation, min, % (Class 1) 225 225Simultaneous with tensile strengthHeat resist
37、ance:Type I at 100 2C (212 4F) for 96 hType II at 121 2C (250 4F) for 168 hFollowed by tests for:Tensile strength, min, psi (MPa):Elongation, min, %:1200 (8.3)1501200 (8.3)175Volume resistivity, min cm,ASpecific gravity, max10101.510111.5Stress modulus (at 200 % strain), max,psi (MPa) 2500 (17.2) 25
38、00 (17.2)Shelf lifeB meet Table 4 requirements meet Table 4 requirementsA Condition the specimens for 24 h before making the volume resistivity measurement.B The 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
39、(70F).TABLE 4 Dimensional Requirements (1.75 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 0.010 (0.89 0.25)
40、 +1, -1038 0.375 (9.52) 40 0.214 (5.44) 0.040 0.010 (1.02 0.25) +1, -1012 0.500 (12.7) 40 0.286 (7.26) 0.048 0.015 (1.22 0.38) +1, -1058 0.625 (15.9) 40 0.357 (9.07) 0.052 0.015 (1.32 0.38) +1, -1034 0.750 (19.0) 40 0.428 (10.9) 0.057 0.015 (1.45 0.38) +1, -1078 0.875 (22.2) 40 0.500 (12.7) 0.065 0.
41、015 (1.65 0.38) +1, -101 1.00 (25.4) 40 0.570 (14.5) 0.070 0.020 (1.78 0.51) +1, -10114 1.25 (31.8) 40 0.714 (18.1) 0.087 0.020 (2.21 0.51) +1, -10112 1.50 (38.1) 40 0.857 (21.8) 0.095 0.020 (2.41 0.51) +1, -10134 1.75 (44.4) 40 1.000 (25.4) 0.107 0.020 (2.72 0.51) +1, -102 2.00 (50.8) 40 1.140 (29.
42、0) 0.110 0.020 (2.79 0.51) +1, -103 3.00 (76.2) 40 1.710 (43.4) 0.125 0.020 (3.18 0.51) +1, -104 4.00 (101.6) 40 2.280 (57.9) 0.140 0.020 (3.56 0.51) +1, -10D2903 18415. Certification15.1 When agreed upon in writing by the purchaser and a seller, a certification consists of the lot number and a copy
43、 of themanufacturers test report or a statement by the seller, accompanied by a copy of the test results, that the material was sampled,tested and inspected in accordance with the provisions of the specification.An authorized agent of the seller and manufacturer shallsign each certification.15.2 Whe
44、n original identity cannot be established, certification can only be based on the sampling procedure as defined inSection 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 conf
45、ormance with standard commercial practice unless otherwise specified. Box each size separately.16.3 Distinctly identify each container of tubing by a tag or label. Show the name of the manufacturer, the expanded andrecovered dimensions of the tubing, the length, quantity and other appropriate inform
46、ation.17. Keywords17.1 crosslinked chlorinated polyolefin heat-shrinkable tubing; electrical insulation; heat-shrinkable tubingSUMMARY OF CHANGESCommittee D09 has identified the location of selected changes to this specificationstandard since the last issue,issue (D6096 03D2903 11,) that may impact
47、the use of this specification.standard. (Approved May 1,2018August 1, 2011.).)(1) Revised Units statement.Added 6.3 (“Conditioning”) for the specimens tested in this Specification.(2) Revised text in sections 7.2, 8.2, 10.1, 12.2, and 12.3.ASTM International takes no position respecting the validity
48、 of any patent rights asserted in connection with any item mentionedin this 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
49、to revision at any time by the responsible technical committee and must 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 th
