ASTM_D_69_-_19.pdf

Designation:D6919Standard Test Methods forFriction Tapes1This standard is issued under the fixed designation D69;the number immediately following the designation indicates the year of originaladoption or,in the case of revision,the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscriptepsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 These test methods cover the methods and proceduresfor testing friction tapes.Such tapes consist of a woven fabricsheeting that has been impregnated with an adhesive insulatingcompound and cut into rolls of narrow width.These tapes arecommonly used for protecting and binding in place,insulationapplied to joints of electrical wires and cables,and for othermechanical purposes.NOTE1The material specifications formerly included in these testmethods are now contained in Specification D4514.1.2 The test methods included in this standard are asfollows:SectionsAdhesion6 11Aged Adhesion12 17Breaking Strength18 23Dielectric Breakdown Voltage24 29Dimensions30 35Discoloration of Copper36 40Parallelism41 451.3 UnitsThe values stated in SI units are the standard.The inch-pound units in parentheses are for information only.The values stated in each system are not necessarily exactequivalents;therefore,to ensure conformance with thestandard,each system shall be used independently of the other,and values from the two systems shall not be combined.1.4 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 standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.NOTE2There is no equivalent IEC standard.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-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 Voltage andDielectric Strength of Solid Electrical Insulating Materialsat Commercial Power FrequenciesD412 Test Methods for Vulcanized Rubber and Thermoplas-tic ElastomersTensionD1711 Terminology Relating to Electrical InsulationD4514 Specification for Friction TapeD5423 Specification for Forced-Convection Laboratory Ov-ens for Evaluation of Electrical InsulationD6054 Practice for Conditioning Electrical Insulating Mate-rials for Testing(Withdrawn 2012)33.Terminology3.1 Definitions:3.1.1 Fordefinitionsofothertermsusedinthisspecification,refer to Terminology D1711.3.2 Definitions of Terms Specific to This Standard:3.2.1 adhesion,nthe resistance of the tape to unwind itselfafter being wound up under pressure,in accordance with thistest method.3.2.2 breaking strength,nthe force required,per unitwidth,to break the tape when tested in accordance with thistest method.3.2.3 conditioning,nthe exposure of the tape to theinfluence of a prescribed atmosphere for a stipulated period oftime.3.2.4 length of tape in a roll,nthe number of linear yardsor meters of tape wound into a roll as measured in accordancewith this test method.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 approved Aug.1,2019.Published August 2019.Originallyapproved in 1920.Last previous edition approved in 2012 as D69 12.DOI:10.1520/D0069-19.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.*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.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 3.2.5 parallelism,nthe difference in width between twomated ends of a tape that has been split in half,in accordancewith this test method.3.2.6 tackiness,nthe adherence of the friction tape sur-faces to themselves after light contact has been made,inaccordance with this test method.4.Sampling4.1 The producer and consumer shall agree upon the num-ber of rolls selected.Unless otherwise specified a minimum