ASTM_D_5105_-_05_2011.pdf

Designation:D510505(Reapproved 2011)Standard Practice forPerforming Accelerated Outdoor Weathering of Pressure-Sensitive Tapes Using Concentrated Natural Sunlight1This standard is issued under the fixed designation D5105;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.This standard has been approved for use by agencies of the Department of Defense.1.Scope1.1 This practice covers one procedure for the exposure ofpressure-sensitive tapes to an accelerated outdoor weatheringenvironment.1.2 This practice describes sample preparation and an ac-celerated outdoor environment to which it shall be exposed.Itdoes not specify what observations or tests are to be performedon the material following exposure.1.3 The values stated in inch-pound units are to be regardedas the standard.The values given in parentheses are forinformation only.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 applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D3715/D3715M Practice for Quality Assurance of Pressure-Sensitive TapesG90 Practice for Performing Accelerated Outdoor Weather-ing of Nonmetallic Materials Using Concentrated NaturalSunlight2.2 Federal Specifications:QQ-A-250/5 AluminumAlloyAlclad 2024,Plate and Sheet32.3 SAE Document:SAE J576 Plastic Materials for Use in Optical Parts Such asLenses and Reflectors of Motor Vehicle LightingDevicesRecommended Practice43.Summary of Practice3.1 The pressure-sensitive tapes are exposed to concentratedsolar radiation in accordance with the conditions provided bythe apparatus described in Practice G90,using spray Cycle 3.Following this exposure,the specimen is ready for anyprescribed examination of appearance and physical character-istics by other standards as determined by the applicablematerial specification or other documents.4.Significance and Use4.1 This practice provides a means of qualitative assess-ments of outdoor weathering effects on pressure-sensitivetapes.The resistance of tapes to outdoor weathering is deter-mined relative to the resistance of a control tape with knownstability.4.2 If tests described in this practice produce the same typeof degradation as found in real-time exposures of the samematerials,it is possible to use the results from these short-termtests to determine the quantitative effects of natural weathering.4.3 The timing of exposure testing covering both outdoorconventional and outdoor accelerated exposure of this practice,using levels of ultraviolet solar radiation exposure(MJ/m2)ofUV(295 to 385 nm)is an improvement in the timing ofexposure testing.Testing specific levels of solar radiant expo-sure(MJ/m2)may be used to establish relative equivalentexposure,but the use of(MJ/m2of UV(295 to 385 nm)is thepreferred method.4,5,64.4 The radiant exposure(308 or 616 MJ/m2)suggested inthis practice approximates one and two years,respectively,of1This practice is under the jurisdiction of ASTM Committee D10 on Packagingand is the direct responsibility of Subcommittee D10.14 on Tape and Labels.Current edition approved Aug.1,2011.Published November 2011.Originallyapproved in 1990.Last previous edition approved in 2005 as D5105 05.DOI:10.1520/D5105-05R11.2For 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.3Available from Standardization Documents Order Desk,Bldg.4 Section D,700Robbins Ave.,Philadelphia,PA 19111-5094,Attn:NPODS.4Available from SAE International(SAE),400 Commonwealth Dr.,Warrendale,PA 15096-0001,http:/www.sae.org.5G.A.Zerlaut,M.W.Rupp,and T.E.Anderson,DEST Laboratories,Inc.,Phoenix,AZ,“Ultraviolet Radiation Timing Technique of Outdoor Weathering ofMaterials,”SAE Technical Paper Series#850348 presented at the InternationalCongress and Exposition,Detroit,MI,Feb.25March 1,1985.Available from SAE.6Bauer,D.R.,Paputa Peck,M.C.,and Carter III,R.O.,“Evaluation ofAccelerated Spectroscopy,”Journal of Coatings Technology,Vol 59,No.755,pp103109.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 exposure in the Southwest and Florida.Since all materials“weather”at different rates in different environments,resultsobtained using this practice should not be represented asequivalent to natural weathering until the degree of quantitativecorrelation has been established for the material tested in theenvironment of its use.NOTE1The ultraviolet content of natural sunshine is time-of-yearde