ASTM_E_2354_-_10.pdf

Designation:E235410Standard Guide forAssessing the Durability of Absorptive ElectrochromicCoatings within Sealed Insulating Glass Units1This standard is issued under the fixed designation E2354;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.1.Scope1.1 This guide provides the recommended sequence forusing the referenced ASTM test methods for assessing thedurability of absorptive electrochromic coatings(ECCs)withinsealed insulating glass units.Cross sections of typical electro-chromic glazings have three to five-layers of coatings thatinclude one to three active layers sandwiched between twotransparent conducting electrodes(TCOs,see Section 3).Examples of the cross-sectional arrangements can be found2in“Evaluation Criteria and Test Methods for ElectrochromicWindows.”(For a list of acronyms used in this standard,seeAppendix X1,Section X1.1).1.2 This guide is applicable only for layered(one or moreactive coatings between the TCOs)absorptive ECCs on visionglass(superstrate and substrate)areas planned for use in IGUsfor buildings,such as glass doors,windows,skylights,andexterior wall systems.The layers used for electrochromicallychanging the optical properties may be inorganic or organicmaterials between the superstrate and substrate.1.3 The ECCs used in this guide will ultimately be exposed(Test Method E2141)to solar radiation and deployed to controlthe amount of radiation by absorption and reflection and thus,limit the solar heat gain and amount of solar radiation that istransmitted into the building.1.4 This guide is not applicable to other types of coatings onvision glass with other chromogenic coatings,for example,photochromic and thermochromic coatings.1.5 This guide is not applicable to IGUs that will beconstructed from superstrate or substrate materials other thanglass.1.6 The test methods referenced in this guide are laboratorytest methods conducted under specified conditions.1.7 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.8 There is no comparable International Standards Organi-zation Standard.1.9 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 requirements prior to use.2.Referenced Documents2.1 ASTM Standards:3C168 Terminology Relating to Thermal InsulationE2141 Test Methods forAssessing the Durability ofAbsorp-tive Electrochromic Coatings on Sealed Insulating GlassUnitsE2188 Test Method for Insulating Glass Unit PerformanceE2189 Test Method for Testing Resistance to Fogging inInsulating Glass UnitsE2190 Specification for Insulating Glass Unit Performanceand EvaluationE2240 Test Method for Assessing the Current-Voltage Cy-cling Stability at 90C(194F)ofAbsorptive Electrochro-mic Coatings on Sealed Insulating Glass UnitsE2241 Test Method for Assessing the Current-Voltage Cy-cling Stability at Room Temperature of Absorptive Elec-trochromic Coatings on Sealed Insulating Glass UnitsE2355 Test Method for Measuring the Visible Light Trans-mission Uniformity of an Absorptive ElectrochromicCoating on a Glazing Surface3.Terminology3.1 DefinitionsRefer to Terminology C168 for definitionsof general terms.3.2 Definitions of Terms Specific to This Standard:1This guide is under the jurisdiction of ASTM Committee E06 on Performanceof Buildings and is the direct responsibility of Subcommittee E06.22 on DurabilityPerformance of Building Constructions.Current edition approved Oct.1,2010.Published November 2010.Originallyapproved in 2004.Last previous edition approved in 2004 as E2354 04.DOI:10.1520/E2354-10.2Czanderna,A.W.,and Lampert,C.M.,“Evaluation Criteria and Test Methodsfor Electrochromic Windows,”SERI/PR-255-3537,Solar Energy Research Institute,Golden,CO,July 1990.3For 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.2.1 accelerated aging testan aging test in which the rateof degradation of building components or materials is inten-tionally accelerated from that expected in actual service.3.2.2 bleached statea descriptor for an EC coating whenno ions reside in the electrochromic layer or after ions havebeen removed(or inserted,depending on the type of material)from the electrochromic layer(s)and if applicable,the maxi-mum number of ions have been returned to the counterelec-trode layer to restore the photopic o