1、Designation:D230518Standard Test Methods forPolymeric Films Used for Electrical Insulation1This standard is issued under the fixed designation D2305;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 These test methods cover the testing of homogeneousorganic polymer films not over 2.4 mm(95 mils)thick that areto be used for electrical insulatio
3、n.1.2 These test methods are not necessarily applicable totesting films in combinations with a coating,another film,orwith other types of substrate,such as fabrics or papers.1.3 The values stated in SI units are the standard.The valuesin parentheses are provided for information only.1.4 The procedur
4、es appear in the following sections:ProcedureSectionsConditioning6 and 7Dielectric Breakdown Voltage&Dielectric Strength21 to 26Extractables65 to 70Heat-Seal Strength59 to 64Permittivity and Dissipation Factor42 to 47Resistance Method for Measuring the Tendency toCorrode Metals38 to 41Sampling5Shrin
5、kage48 to 53Strain Relief13 to 20Surface Resistivity27 to 31Tensile Properties12Thickness8 to 11Volume Resistivity32 to 37Water Absorption53 to 581.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standar
6、d to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.NOTE1These test methods are similar to IEC 606742.1.6 This international standard was developed in accor-dance with internationally recognized principles on s
7、tandard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D149 Test Method for Dielectric Breakdown Volt
8、age andDielectric Strength of Solid Electrical Insulating Materialsat Commercial Power FrequenciesD150 Test Methods for AC Loss Characteristics and Permit-tivity(Dielectric Constant)of Solid Electrical InsulationD257 Test Methods for DC Resistance or Conductance ofInsulating MaterialsD374 Test Metho
9、ds for Thickness of Solid Electrical Insu-lation(Metric)D0374_D0374MD570 Test Method for Water Absorption of PlasticsD882 Test Method for Tensile Properties of Thin PlasticSheetingD883 Terminology Relating to PlasticsD1000 Test Methods for Pressure-Sensitive Adhesive-Coated Tapes Used for Electrical
10、 and Electronic Applica-tionsD1531 Test Methods for Relative Permittivity(DielectricConstant)and Dissipation Factor by Fluid DisplacementProcedures(Withdrawn 2012)3D1676 Test Methods for Film-Insulated Magnet WireD1711 Terminology Relating to Electrical InsulationD5032 Practice for Maintaining Const
11、ant Relative Humidityby Means of Aqueous Glycerin SolutionsD6054 Practice for Conditioning Electrical Insulating Mate-rials for Testing(Withdrawn 2012)3E691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test Method2.2 IEC Standard:Publication 606742 Specification fo
12、r Plastic Films for Elec-trical Purposes43.Terminology3.1 Definitions:1These test methods are under the jurisdiction of ASTM Committee D09 onElectrical and Electronic Insulating Materials and are the direct responsibility ofSubcommittee D09.07 on Electrical Insulating Materials.Current edition appro
13、ved May 1,2018.Published June 2018.Originallypublished in 1964.Last previous edition approved in 2010 as D2305 10.DOI:10.1520/D2305-18.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume informa
14、tion,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.4Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.*A Summary of Changes sect
15、ion appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Prin
16、ciples for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 3.1.1 Definitions are in accordance with TerminologiesD1711 and D883 unless otherwise specified.3.2 Definitions of Terms Specific to This Standard:3.2.1 sheet,nmaterial greater than 75 mm in width.3.2.2 strain relief,nrelaxation at a specified elevatedtemperature of induced strains.3.2.3 strip,nmaterial 75 mm or less in width.4.Hazards