1、Designation: D2647 10D2647 18Standard Specification forCrosslinkable Ethylene Plastics1This standard is issued under the fixed designation D2647; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number i
2、n 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 a general classification system for crosslinkable ethylene plastics compounds (Note 1). Therequirements specified he
3、rein are not necessarily applicable for use as criteria in determining suitability for the end use of afabricated product.NOTE 1It is to be noted that this specification describes materials that are available commercially in their uncrosslinked form. Therefore, they arecrosslinkable compounds despit
4、e the fact that measurement of the parameters used for their classification and specification will usually be carried out aftercuring has been effected.1.2 Two types of compounds are covered, namely, mechanical types in which mechanical strength properties are of primeimportance in applications, and
5、 electrical types in which electrical insulating or conducting properties also are of prime importancein applications.1.3 The parameters used to classify and specify the mechanical types are ultimate elongation, elongation retention after aging,apparent modulus of rigidity, and brittleness temperatu
6、re.1.4 The parameters used to classify and specify the electrical types are ultimate elongation, elongation retention after aging,apparent modulus of rigidity, brittleness temperature, dielectric constant, dissipation factor, and volume resistivity.1.5 The values stated in SI units are to be regarde
7、d as the standard. The values given in parentheses are for information only.1.6 The following safety hazards caveat pertains only to the test methods portion, Section 7, of this specification: Thisspecificationstandard does not purport to address all of the safety concerns, if any, associated with i
8、ts use. It is the responsibilityof the user of this specificationstandard to establish appropriate safety safety, health, and healthenvironmental practices anddetermine the applicability of regulatory limitations prior to use.NOTE 2There is no known ISO equivalent to this standard.1.7 This internati
9、onal standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committe
10、e.2. Referenced Documents2.1 ASTM Standards:2D150 Test Methods for AC Loss Characteristics and Permittivity (Dielectric Constant) of Solid Electrical InsulationD257 Test Methods for DC Resistance or Conductance of Insulating MaterialsD573 Test Method for RubberDeterioration in an Air OvenD618 Practi
11、ce for Conditioning Plastics for TestingD638 Test Method for Tensile Properties of PlasticsD746 Test Method for Brittleness Temperature of Plastics and Elastomers by ImpactD883 Terminology Relating to PlasticsD991 Test Method for Rubber PropertyVolume Resistivity Of Electrically Conductive and Antis
12、tatic ProductsD1043 Test Method for Stiffness Properties of Plastics as a Function of Temperature by Means of a Torsion TestD2765 Test Methods for Determination of Gel Content and Swell Ratio of Crosslinked Ethylene PlasticsD3892 Practice for Packaging/Packing of Plastics1 This specification is unde
13、r the jurisdiction of ASTM Committee D20 on Plastics and is the direct responsibility of Subcommittee D20.15 on Thermoplastic Materials.Current edition approved April 1, 2010Nov. 1, 2018. Published May 2010November 2018. Originally approved in 1967. Last previous edition approved in 20052010 asD2647
14、 - 05D2647 - 10.A. DOI: 10.1520/D2647-10.10.1520/D2647-18.2 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 website.Thi
15、s 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 possible to adequately depict all changes accurately, ASTM recommends that users consult prior editio
16、ns 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 standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959.
17、United States1IEEE/ASTM SI-10 Standard for Use of the International System of Units (SI): (The Modernized Metric System)2.2 Military Standard:MIL-STD-105 Sampling Procedures and Tables for Inspection by Attributes3(Obsolete 1995)3. Terminology3.1 Definitions: DefinitionsFor definitions of plastics t
18、erms used in this specification, see Terminology D883.3.2 Abbreviations: AbbreviationsUnits, Symbols, and AbbreviationsFor units, symbols, and abbreviations used in thisspecification see IEEE/ASTM SI-10.4. Classification4.1 Classification SystemTable 1 and Table 2 provide a classification system for
19、 these compounds so that the relations amongthem can be are delineated and those that are commercially available can be are readily specified. It is not the intent to indicatethat all the combinations of properties possible are represented by commercial products or that they are technically possible
20、 at thepresent state of knowledge.4.2 TypesThis specification covers two general types of compounds: Type IMechanical types (Table 1), and TypeIIElectrical types (Table 2).4.3 GradesA grade is designated by first indicating the type (I or II) followed by cell numbers for each property in the orderin
21、 which they are listed in the tables. Where there is no interest in a property, a “0” is entered in place of a cell number.5. General Requirements5.1 The compound shall be in powder, pellet or granular form, as agreed upon between the seller and the purchaser.5.2 The compound, after crosslinking, sh
22、all conform to the requirements given in Table 1 or Table 2, whichever is applicable,for the type and grade specified when tested in accordance with the procedures given in Sections 6, 7, and 8.6. Sampling6.1 Sampling shall be statistically adequate to satisfy the requirements of 9.4.6.2 Abatch or l
23、ot shall be constituted as a unit of manufacture as prepared for shipment and can consist of sometimes is a blendof two or more “production runs.”7. Specimen Preparation7.1 Unless otherwise agreed upon between the seller and the purchaser, the test specimens shall be formed and cured inaccordance wi
24、th the compound manufacturers recommendations.8. Test Methods8.1 ConditioningCondition the test specimen at 23 6 2C (73.4 6 3.6F) and 50 6 10 % relative humidity for not less than40 h prior to test in accordance with Procedure A of Practice D618, for those tests where conditioning is required and in
25、 all casesof disagreement.8.2 Test ConditionsConduct tests in the standard laboratory atmosphere of 23 6 2C (73.4 6 3.6F) and 50 6 10 % relativehumidity, unless otherwise specified in the test methods or in this specification.3 Available from Defense Automation and Production Service, Bldg. 4 Sectio
26、n D, 700 Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.TABLE 1 Type I, Mechanical Compound RequirementsDesignationOrder No. PropertyCell Limits0 1 2 3 4 51 Ultimate elongation, % unspecified 2.50 3.50 6.00 8.007 Dissipation factor unspecified #0.001 0.001 0.005 0.01 0.18 Volume resistivity,
27、 cm unspecified $101 5 $101 2 $104 104D2647 18310.2 MarkingUnless otherwise agreed between the seller and the purchaser, shipping containers shall be marked with thename of the material and its supplier, type and grade designation, and the quantity contained.10.3 All packing, packaging, and marking
28、provisions of Practice D3892 shall apply to this specification.11. Keywords11.1 crosslinkable; crosslinked; ethylene plastics; insoluble fraction; volume resistivityQUALITY ASSURANCE PROVISIONS FOR GOVERNMENT/MILITARY PROCUREMENTThese requirements apply only to Federal/Military procurement, not dome
29、stic sales or transfers.S1. When specified in the contract or purchase order, sampling for inspection and testing shall be carried out in accordance withthe recommendations of Practice D1898.S2. Selection of Acceptable Quality Level (AQL) and of Inspection Level (IL) shall be made, with consideratio
30、n of the specificuse requirements. This is discussed in the Means and Standard Deviations and Comparison of Sampling Plans sections of the abovedocument, with reference to Military Standard MIL-STD-105.S3. In the absence of contrary requirements, the following values shall apply:IL AQLDefects of app
31、earance and workmanship II 2.5Defects of preparation for delivery S-2 2.5Test (products) S-1 1.5Testing (polymer, unfabricated) S-1A A Samples shall be drawn from the required number of units, and pooled for preparation of molded samples for mechanical properties evaluation.SUPPLEMENTARY REQUIREMENT
32、SQUALITY ASSURANCE PROVISIONS FOR GOVERNMENT/MILITARY PROCUREMENTThese requirements apply only to Federal/Military procurement, not domestic sales or transfers.S1. When specified in the contract or purchase order, sampling for inspection and testing shall be carried out in accordance withthe recomme
33、ndations of Practice D1898.S2. Selection of Acceptable Quality Level (AQL) and of Inspection Level (IL) shall be made, with consideration of the specificuse requirements. This is discussed in the Means and Standard Deviations and Comparison of Sampling Plans sections of the abovedocument, with refer
34、ence to Military Standard MIL-STD-105.S3. In the absence of contrary requirements, the following values shall apply:IL AQLDefects of appearance and workmanship II 2.5Defects of preparation for delivery S-2 2.5Test (products) S-1 1.5Testing (polymer, unfabricated) S-1A A Samples shall be drawn from t
35、he required number of units, and pooled for preparation of molded samples for mechanical properties evaluation.D2647 184SUMMARY OF CHANGESCommittee D20 has identified the location of selected changes to this specificationstandard since the last issue,issue (D2647 - 05aD2647,10) that may impact the u
36、se of this specification. (standard. (NovemberMay 1, 2010)1, 2018)(1) Revised Note 2,4.1 6.1,to 8.1,clarify 8.2, and language.8.5(2) Revised Sections6.2 6 andto clarify 9.language.(3) Revised 8.7 for consistency with referenced ASTM Standard.ASTM International takes no position respecting the validi
37、ty 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 subjec
38、t 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 Headquarter
39、s. Your comments will receive careful consideration at a meeting of theresponsible 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 i
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