ASTM_D_2148_-_19e1.pdf

Designation:D2148191Standard Test Methods forBondable Silicone Rubber Tapes Used for ElectricalInsulation1This standard is issued under the fixed designation D2148;the number immediately following the designation indicates the year oforiginal adoption or,in the case 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.1NOTEAdjunct information was updated editorially in January 2021.1.Scope*1.1 These test methods cover tests for bondable siliconerubber tapes which form a sealed structure either with theapplication of heat(and pressure if needed)or by the processof auto-adhesion(self-fusing).1.2 These test methods appear in the following sections:Test MethodSectionAdhesion3 10Bond Strength11 18Dielectric Breakdown Voltage19 26Hardness41Length33 and 34Thickness27 32Width36 401.3 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.For a specific hazard statement see 23.1.1.1.5 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 FrequenciesD374/D374M Test Methods for Thickness of Solid Electri-cal InsulationD618 Practice for Conditioning Plastics for TestingD1000 Test Methods for Pressure-Sensitive Adhesive-Coated Tapes Used for Electrical and Electronic Applica-tionsD1458 Test Methods for Fully Cured Silicone Rubber-Coated Glass Fabric and Tapes for Electrical Insulation(Withdrawn 2019)3D2240 Test Method for Rubber PropertyDurometer Hard-ness2.2 ASTM Adjuncts:Tack Tester(one drawing)4ADHESION3.Scope3.1 This test method covers the determination of the self-adhesion of unsupported,self-fusing silicone rubber rectangu-lar and taper-edge(Note 1)tape designed for use as electricalinsulation.NOTE1Taper-edge tape includes such cross sections as triangular,lens,etc.3.2 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for the1These 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 1963.Last previous edition approved in 2018 as D2148 18.DOI:10.1520/D2148-19E01.2For 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.4AvailablefromASTMInternationalHeadquarters.OrderAdjunctNo.ADJD2148-E-PDF.Original adjunct produced in 1965.Adjunct last revised in2021.*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.1Development of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.4.Hazards4.1 High Voltage:4.1.1 Lethal voltages are a potential hazard during theperformance of this test.It is essential that the test apparatus,and all associated equipment electrically connected to it,beproperly designed and installed for safe operation.4.1.2 Solidly ground all electrically conductive parts whichit is possible for a person to contact during the test.4.1.3 Provide means for use at the completion of any test toground any parts which were at high voltage during the test orhave the potential for acquiring a