1、Designation:B53385(Reapproved 2013)Endorsed by AmericanElectroplaters SocietyEndorsed by NationalAssociation of Metal FinishersStandard Test Method forPeel Strength of Metal Electroplated Plastics1This standard is issued under the fixed designation B533;the number immediately following the designati
2、on 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.1.Scope1.1 This test method gives two procedures for
3、measuring theforce required to peel a metallic coating from a plasticsubstrate.2One procedure(Procedure A)utilizes a universaltesting machine and yields reproducible measurements that canbe used in research and development,in quality control andproduct acceptance,in the description of material and p
4、rocesscharacteristics,and in communications.The other procedure(Procedure B)utilizes an indicating force instrument that is lessaccurate and that is sensitive to operator technique.It issuitable for process control use.1.2 The tests are performed on standard molded plaques.This method does not cover
5、 the testing of production electro-plated parts.1.3 The tests do not necessarily measure the adhesion of ametallic coating to a plastic substrate because in properlyprepared test specimens,separation usually occurs in theplastic just beneath the coating-substrate interface rather thanat the interfac
6、e.It does,however,reflect the degree that theprocess is controlled.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 and health practices and determine the appli
7、ca-bility of regulatory limitations prior to use.2.Referenced Document2.1 ASTM Standards:3E4 Practices for Force Verification of Testing Machines3.Summary of Test Method3.1 A properly prepared standard test specimen,called aplaque,is copper electroplated,with no additional metalcoating.The coated pl
8、aque is either tested as is,or it isconditioned by a low-temperature bake and then tested.Thecoating is cut through to the plastic substrate in a way thatforms two strips of coating(see Fig.1).Each strip is peeledfrom the substrate at a right angle using an instrument thatindicates the force require
9、d to separate it from its substrate.4.Significance and Use4.1 The force required to separate a metallic coating from itsplastic substrate is determined by the interaction of severalfactors:the generic type and quality of the plastic moldingcompound,the molding process,the process used to preparethe
10、substrate for electroplating,and the thickness and mechani-cal properties of the metallic coating.By holding all othersconstant,the effect on the peel strength by a change in any oneof the above listed factors may be noted.Routine use of the testin a production operation can detect changes in any of
11、 theabove listed factors.4.2 The peel test values do not directly correlate to theadhesion of metallic coatings on the actual product.4.3 When the peel test is used to monitor the coatingprocess,a large number of plaques should be molded at onetime from a same batch of molding compound used in thepr
12、oduction moldings to minimize the effects on the measure-ments of variations in the plastic and the molding process.5.Apparatus5.1 Procedure AA tension testing machine that has self-aligning grips and that has a loading range that includes theforces to be measured,5 to 200 N,shall be used to separat
13、e thecoating from the substrate,and measure the force required.Themachine shall meet the verification requirements of PracticesE4.4,5The speed of separation of the crossarms of the machineshall be adjusted to give a separation rate of 25 6 3 mm/min.The machine shall automatically and continuously re
14、cord on a1This test method is under the jurisdiction ofASTM Committee B08 on Metallicand Inorganic Coatingsand is the direct responsibility of Subcommittee B08.05 onDecorative Coatings.Current edition approved Dec.1,2013.Published December 2013.Originallyapproved in 1970.Last previous edition approv
15、ed in 2009 as B533 85(2009).DOI:10.1520/B0533-85R13.2This test is also known as the Jacquet Test.A detailed treatment of the test hasbeen published by Saubestre et al in Plating,Vol 52,1965,p.982.3For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at se
16、rviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.4The sole source of supply of the Instron universal testing machine known to thecommittee at this time is Instron Corp.,Canton,MA.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 chart the load on one coordinate and the amount of peel on theother coordinate.The amount of peel may be obtained fromcalculation,