1、Designation: E3120 17Standard Specification forEvaluating Accelerated Aging Performance ofEnvironmentally Controlled Dynamic Glazings1This standard is issued under the fixed designation E3120; the number immediately following the designation indicates the year oforiginal adoption or, in the case of
2、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 specification is applicable to environmentally con-trolled dynamic glazings (ECDG) whose vi
3、sible light transmit-tance or near infrared light transmittance properties, or both,can be changed reversibly by exposure to changing environ-mental conditions such as temperature and sunlight intensity.This includes thermochromic and thermotropic glazing, butcurrently excludes photochromic glazings
4、 as neither TestMethod E3119 nor this specification provide a procedure toaccess multiple states of photochromic glazing specimens.1.2 This specification does not apply to other types ofdynamic glazing which require an electrical stimulus to changelight transmittance, such as electrochromic glazings
5、.1.3 This specification covers environmentally controlleddynamic glazing (ECDG) in monolithic glass, monolithiclaminated glass, or pre-assembled, permanently sealed insulat-ing glass units with one or more cavities in which at least onelite is an ECDG (which may be in the form of a laminated liteor
6、a single pane with coatings or film applied). This specifica-tion is also applicable to ECDG devices in pre-assembledinsulating glass units with capillary tubes intentionally leftopen. As applicable, this specification also requires confor-mance to Specification E2190.1.4 This specification is appli
7、cable only to monolithic glass,monolithic laminated glass, and sealed insulating glass unitsthat are constructed with glass and fabricated for vision glassareas for use in buildings, such as sliding doors, windows,skylights, and exterior wall systems.1.5 Qualification under this specification is int
8、ended toprovide a basis for evaluating the aging performance ofenvironmentally controlled dynamic glazing in monolithicglass, monolithic laminated glass, and sealed insulating glassunits.1.6 The values stated in SI units are to be regarded asstandard. No other units of measurement are included in th
9、isstandard.1.7 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 p
10、rior to use.1.8 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 Technica
11、lBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2C162 Terminology of Glass and Glass ProductsC1036 Specification for Flat GlassC1048 Specification for Heat-Strengthened and Fully Tem-pered Flat GlassC1172 Specification for Laminated Architectural Flat GlassE631 Terminolo
12、gy of Building ConstructionsE2190 Specification for Insulating Glass Unit Performanceand EvaluationE3119 Test Method for Accelerated Aging of Environmen-tally Controlled Dynamic GlazingG113 Terminology Relating to Natural and Artificial Weath-ering Tests of Nonmetallic Materials3. Terminology3.1 Def
13、initionsFor definitions of terms found in thisspecification, refer to Terminologies C162, E631, and G113.3.2 Definitions of Terms Specific to This Standard:3.2.1 environmentally controlled dynamic glazing, nin aprepared opening of a building, the glazing material installed inwhich the optical proper
14、ties can change in response to envi-ronmental stimuli such as sunlight and/or temperature.3.2.2 photochromic glazing, nan environmentally con-trolled dynamic glazing which changes its optical properties inresponse to exposure to solar radiation.1This specification is under the jurisdiction of ASTM C
15、ommittee E06 onPerformance of Buildings and is the direct responsibility of Subcommittee E06.22on Durability Performance of Building Constructions.Current edition approved Sept. 1, 2017. Published December 2017. DOI:10.1520/E3120-17.2For referenced ASTM standards, visit the ASTM website, www.astm.or
16、g, 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 StatesThis internatio
17、nal 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) Committe
18、e.13.2.3 sealed insulating glass unit, na preassembled unit,comprising lites of glass, which are sealed at the edges andseparated by dehydrated cavity(s), intended for vision areas ofbuildings. The unit is normally used for windows, windowwalls, picture windows, sliding doors, patio doors, or othert
19、ypes of fenestration.3.2.4 specular (regular) transmittance, nthe optical trans-mittance that does not include light with a diffuse component.3.2.5 thermochromic glazing, nan environmentally con-trolled dynamic glazing which changes its optical properties inresponse to exposure to a broad range of t
20、emperatures(10 C).3.2.6 thermotropic glazing, nan environmentally con-trolled dynamic glazing which changes its optical properties ata discrete temperature or over a small range of temperatures(that is, 10 C).3.2.7 transition temperature, nspecifically in thermo-tropic ECDG, it is temperature at whi
21、ch the optical propertiesof a given glazing switches between highest transmittance stateand lowest transmittance state.3.2.7.1 DiscussionIn thermochromic glazing, the opticalproperties change continuously over a broad temperature range(that is, 10 C) and so do not have a transition temperature.3.3 A
22、cronyms Used in This Specification:3.3.1 ECDGenvironmentally controlled dynamic glazing.3.3.2 IGinsulating glass.3.3.3 IGU(s)insulating glass unit(s).3.3.4 Hhighest specified temperature for recording spec-tral data.3.3.5 Llowest specified temperature for recording spec-tral data.3.3.6 Mmidrange spe
23、cified temperature for recordingspectral data.3.3.6.1 DiscussionFor thermotropic glazings, TMshall bea temperature 1 to 3 C less than the stated transitiontemperature, if single value is given for the transition tempera-ture. TMshall be a temperature 1 to 3 C less than the midpointof stated transiti
24、on temperature range, if a range of values isstated for the transition temperature for the thermotropicglazing.3.3.7 Hvisible light (photopic) specular transmission of aspecimen at H.3.3.8 Lvisible light (photopic) specular transmission of aspecimen at L.3.3.9 Mvisible light (photopic) specular tran
25、smission of aspecimen at M.4. Performance Requirements4.1 For the specimens tested to Test Method E3119, visiblelight transmittance in the highest transmittance state and thelowest transmittance state shall change by no more than65% absolute. That is:?Hinitial!2Hfinal!?#0.05 (1)?Minitial!2Mfinal!?#0
26、.05 (2)?Linitial!2Lfinal!?#0.05 (3)where:H(initial) = the visible light transmittance at Hmeasuredprior to testing according to Test MethodE3119.M(initial) = the visible light transmittance at Mmeasuredprior to testing according to Test MethodE3119.L(initial) = the visible light transmittance at Lme
27、asuredprior to testing according to Test MethodE3119.H(final) = the visible light transmittance at Hmeasuredafter testing according to Test Method E3119.M(final) = the visible light transmittance at Mmeasuredafter testing according to Test Method E3119.L(final) = the visible light transmittance at L
28、measuredafter testing according to Test Method E3119.4.2 Insulating glass test specimens containing the ECDGshall meet the requirements of Specification E2190.4.3 Monolithic laminated glass test specimens containingthe ECDG shall meet the requirements of Specification C1172.4.4 Monolithic glass test
29、 specimens containing the ECDGthat are flat glass, but are not heat-treated, shall meet therequirements of Specification C1036.4.5 Monolithic glass test specimens containing the ECDGthat are heat-treated flat glass shall meet the requirements ofSpecification C1048.5. Specimen Preparation5.1 Five ide
30、ntical specimens shall be prepared for testing toTest Method E3119. One specimen shall remain untested forcomparison and four shall be exposed to the test conditionsaccording to Test Method E3119. The minimum test specimensize is 150 300 mm. Four specimens must be able to fit ontothe test plane simu
31、ltaneously.5.2 Test specimens for determining conformance to Speci-fication E2190 shall be prepared as described in SpecificationE2190 for IG specimens.5.3 Test specimens for determining conformance to Speci-fication C1172 shall be prepared as described in SpecificationC1172 for monolithic laminated
32、 glass specimens.5.4 Test specimens for determining conformance to Speci-fication C1036 shall be prepared as described in SpecificationC1036 for monolithic glass specimens.5.5 Test specimens for determining conformance to Speci-fication C1048 shall be prepared as described in SpecificationC1048 for
33、monolithic glass specimens.6. Procedure6.1 Follow Test Method E3119.6.1.1 The specimen temperatures as measured within 25 65 mm of the center of the outer surface of the ECDG shall bemaintained at 85 6 7 C.6.1.2 As described in Test Method E3119, take one set ofvisible light transmittance measuremen
34、ts at L, M, and HatE3120 172the measured center of the glass prior to exposure to the testconditions and one set of visible light transmittance measure-ments at L, M, and Hat the measured center of the glass atthe completion of the conditions in the test method. The samespot will be measured prior t
35、o and following the exposuredescribed in the test method. Do not measure the transmissionin the location where tape has been used to hold thethermocouple, as it has shielded the glass from the incidentradiation.6.2 Additional Test Methods:6.2.1 For IG specimens, ensure specimens in 5.2 havepassed th
36、e specification requirements found in SpecificationE2190. If gas filled ECDG IGUs are not to be certified, 4.3 ofSpecification E2190 does not apply.6.2.2 For monolithic laminated glass specimens, ensurespecimens in 5.3 have passed the specification requirementsfound in Specification C1172.6.2.3 For
37、monolithic glass specimens containing the ECDGthat are flat glass, but are not heat-treated, ensure specimens in5.4 have passed the specification requirements found in Speci-fication C1036.6.2.4 For monolithic glass test specimens containing theECDG that are heat treated flat glass, ensure specimens
38、 in 5.5have passed the specification requirements found in Specifica-tion C1048.7. Qualification7.1 When at least three of the four test specimens have metthe requirements as described in Section 4, this set of testspecimens shall be deemed to be qualified according to thisspecification at the Monol
39、ithic Glazing Classification, Mono-lithic Laminated Glazing Classification, Exterior Glazed Prod-uct Classification, or the Room-Side Glazed ProductClassification, depending on the selected specimen orientationduring the test.7.1.1 The Exterior Product Classification is for those insu-lating glass p
40、roducts that meet this specification after beingtested with the lite containing the ECDG pane closest to thelamp source.7.1.2 The Room-Side Product Classification is for thoseinsulating glass products that meet this specification after beingtested with the lite containing the ECDG pane farthest away
41、from the lamp source.7.1.3 The Monolithic Glazing Classification is for thoseproducts that meet this specification after being tested with theECDG as a monolithic glass lite.7.1.4 The Monolithic Laminated Glazing Classification isfor those products that meet this specification after being testedwith
42、 the ECDG as a monolithic glass laminate.7.2 If more than one specimen fails to meet the require-ments for any reason, including accidental damage, this set ofspecimens shall not be qualified according to this specification.8. Report8.1 Two separate reports shall be generated, one for confor-mance t
43、o Test Method E3119 (4.1) and one related to confor-mance to the appropriate specification listed in 4.2 to Section 5.8.2 Test Method E3119 Report.8.2.1 Report all information as required in the ReportSection of Test Method E3119.8.2.2 Report the orientation of the ECDG containing lite inthe insulat
44、ing glass unit relative to the radiation source (that is,was it tested as monolithic glass, monolithic laminated glass,exterior lite or room side lite glazed ECDG configuration).8.2.3 Report a full description of the make-up of the ECDGspecimen tested, including a description of the ECDG paneand, if
45、 applicable, the non-ECDG pane, the cavity dimension,and any additional films or coatings, or both.8.2.4 If applicable, report the transition temperature of theglazing as stated by the manufacturer.8.2.5 Report initial and final transmittance values for centerof glass for the four samples as shown i
46、n Table X1.1 in theappendix.8.2.6 Record the total exposure hours under test conditions.8.2.7 Report whether or not the set of specimens meets thequalifications of this specification related to aging performanceper Test Method E3119 to either the Monolithic GlazingClassification standard, Monolithic
47、 Laminated Glazing Classi-fication standard, Exterior Glazed Product Classificationstandard, or the Room-Side Glazed Product Classificationstandard (see Section 7).8.3 Specification E2190 Report, if applicable, per 6.2.1.8.3.1 Report all information as required by SpecificationE2190.8.3.2 Report whe
48、ther or not the set of test specimens meetsthe qualifications of this specification related to ECDG insu-lating glass unit performance per Specification E2190.8.4 Laminated Glass Report, if applicable, per 6.2.2.8.4.1 Report all information as required by SpecificationC1172.8.4.2 Report whether or n
49、ot the set of test specimens meetsthe qualifications for either Type 1 or Type 2 laminated flatglass.8.5 Monolithic Glass Report, if applicable, per 6.2.3.8.5.1 Report all information as required by SpecificationC1036.8.5.2 Report type, class, form, quality, and finish of glass, asapplicable.8.6 Monolithic Glass Report, if applicable, per 6.2.4.8.6.1 Report all information as required by SpecificationC1048.8.6.2 Report kind, condition, type, class, style, form,quality, finish, and pattern of glass, as applicable.9.
