1、Designation: E2188 10Standard Test Method forInsulating Glass Unit Performance1This standard is issued under the fixed designation E2188; 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 parent
2、heses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers procedures for testing theperformance of preassembled permanently sealed insulatingglass units or insulating glass units with c
3、apillary tubesintentionally left open.1.2 This test method is applicable only to sealed insulatingglass units that are constructed with glass.1.3 This test method is applicable to both double-glazed andtriple-glazed insulating glass units. For triple-glazed insulatingglass units where both of the ou
4、ter lites are glass and the innerlite is either glass or a suspended film.1.4 The unit construction used in this test method containsdimensions that are an essential component of the test. Differ-ent types of glass, different glass thicknesses, and differentairspace sizes may affect the test results
5、.1.5 This test method is not applicable to sealed insulatingglass units containing a spandrel glass coating due to testinglimitations.1.6 The values stated in SI units are to be regarded asstandard. No other units of measurement are included in thisstandard.1.7 This standard does not purport to addr
6、ess 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:2C162 Terminolo
7、gy of Glass and Glass ProductsC717 Terminology of Building Seals and SealantsC1036 Specification for Flat GlassE631 Terminology of Building ConstructionsE546 Test Method for Frost/Dew Point of Sealed InsulatingGlass UnitsE2190 Specification for Insulating Glass Unit Performanceand Evaluation3. Termi
8、nology3.1 Definition of Terms:3.1.1 For definitions of terms found in this standard, refer toTerminologies C162, C717, and E631.3.2 Definitions of Terms Specific to This Standard:3.2.1 frost/dew point, nthe temperature at which water,organic vapor, or other chemicals begin to appear on theinterior g
9、lass surface of a sealed insulating glass unit.4. Significance and Use4.1 This test method is intended to provide a means fortesting the performance of the sealing system and constructionof sealed insulating glass units.4.1.1 Sealed insulating glass units tested in accordance withthis method may be
10、suitable for structurally glazed applica-tions. However, factors such as sealant longevity when ex-posed to long term ultraviolet light and the structural propertiesof the sealant must be reviewed for these applications.4.1.2 Sealed insulating glass units tested in accordance withthis method are not
11、 intended for continuous exposure to highrelative humidity conditions or long-term immersion in water.5. Test Specimens5.1 Each test specimen shall measure 355 6 6mm by505 6 6 mm and shall be composed of two or three lites ofclear, tinted or coated annealed, heat-strengthened, tempered,or laminated
12、glass.5.1.1 The double-glazed test samples shall be fabricatedwith at least one lite of clear, uncoated glass. The triple-glazedtest samples shall be fabricated with at least one outer lite ofclear, uncoated glass. The other outer lite shall be fabricatedwith a glass which allows easy viewing of the
13、 frost point.5.1.2 The thickness of the glass lites shall be betweennominal 3.0 mm and a maximum of 6.0 mm nominal.5.1.3 The airspaces for units with either two or three lites ofglass shall be a minimum of 6.0 6 0.8 mm.5.1.4 When testing to Specification E2190 the specimenconstruction shall be as de
14、fined in that document.1This test method is under the jurisdiction of ASTM Committee E06 onPerformance of Buildings and is the direct responsibility of Subcommittee E06.22on Durability Performance of Building Constructions.Current edition approved Nov. 1, 2010. Published February 2011. Originallyapp
15、roved in 2002. Last previous edition approved in 2002 as E2188 02. DOI:10.1520/E2188-10.2For 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 Summa
16、ry page onthe ASTM website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States15.1.5 Triple-pane units where the intermediate airspacedivider is a plastic film are acceptable.NOTE 1Overall unit thickness has some limits. Testing laborator
17、iesare usually able to accommodate 30 mm overall thickness. If testingthicker units, contact the testing laboratory prior to manufacturing toascertain their capabilities for testing thicker units.5.2 The thickness tolerance of the glass shall conform toSpecification C1036.5.3 Each specimen shall be
18、permanently and legibly markedwith the designation of the manufacturer, the date of fabrica-tion (month or quarter and year) and orientation intended in thefield (for units constructed with coated glass).5.4 At least nine specimens of identical component materi-als and construction shall be submitte
19、d for testing.5.5 During all stages of exposure and storage, the units shallbe held in a vertical position with equal support to all panes andno compression loading.5.6 Selection of six specimens for testing shall be made atrandom from the submitted specimens except for specimensdamaged in transit.
20、Damaged specimens shall not be tested.5.7 Test specimens representing insulating glass units thatwill be gas filled shall be fabricated using the same hole sealingand gas filling techniques as those used for manufacturing. Forexample, if a gas-filling plug is used in manufacturing then itmust be use
21、d in the test units. The samples do not need to befilled with gas providing that the gas is classified as inert. Testsamples representing products that are normally filled with aninert gas in production, may be submitted air filled for thistesting as long as they have been manufactured with the same
22、techniques as used in production.5.8 Test specimens representing insulating glass units thatinclude tubes intended to be left open shall be fabricated withone tube. These tubes shall be left open during testing. Testsamples representing units that include tubes intended to beclosed off after shippin
23、g shall be fabricated with one tube.These tubes shall be closed at the exterior end prior to testing.6. Apparatus6.1 For Weather Cycle Phase:6.1.1 Weather Cycle Test Apparatus3The weather cycletest apparatus shall be essentially that shown in Figs. 1 and 2to provide the required test conditions indi
24、cated in Section 8.Modifications to this test apparatus are acceptable providingthat the required test conditions are met.6.1.1.1 Ultraviolet Light Source (WarningUltravioletlight sources used in this test method are harmful, especially tothe eyes. Appropriate protective measures must be observed.)6
25、.1.1.2 The source shall consist of two fluorescent ultravio-let lamps, Type F72T12BL/HO4(Note 2), for each testspecimen located as shown in Fig. 1.NOTE 2Rated average life at 3 h per start: 12 000 h. Rated average lifeat 12 h per start: 18 000 h. Useful length: 1625 mm. Wattage: 85 W.Relative ultrav
26、iolet energy output is 190 % that of F40BL lamp (not highoutput), when measured at 340 nm.3The apparatus is a modification of the device developed by the Institute forResearch in Construction (IRC) of the National Research Council of Canada. Onemodification was to expose each test specimen to two ul
27、traviolet lamps.4Available from General Electric Company (GE), Nela Park, Cleveland, OH44112, http:/.Description: (1) Fog or mist spray; (2) Cooling coil; (3) Fluorescent ultraviolet lamp, F72T12BL/HO; (4) Heating coil; (5) Rubber pad; (6) Polystyrene insulation; (7) Rubberwasher; (8) Clamping devic
28、e; (9) Test specimen; (10) Fan motor; (11) Air duct; (12) InsulationFIG. 1 Schematic Drawing of Typical Accelerated Weathering ApparatusE2188 1026.1.1.3 Each lamp shall be replaced when its ultravioletlight intensity falls below 10 Wm2(1000 Wcm2) whenmeasured with a long-wave ultraviolet meter5in di
29、rect contactwith the lamp.6.1.2 Protect the accelerated weathering chamber fromoverheating and from overcooling with protective devices.6.1.3 Equip the accelerated weather cycle chamber with oneor more sensors and a continuous temperature recording deviceplaced in an area that measures the represent
30、ative air tempera-ture at any time inside the chamber.6.2 For High Humidity Phase:6.2.1 High Humidity Test ChamberA chamber of conve-nient dimensions capable of maintaining 60 6 3C and95 6 5 % relative humidity.6.2.2 The high humidity chamber shall be protected fromoverheating with a protective devi
31、ce.6.2.3 Equip high humidity chamber with one or moresensors and a continuous air temperature-recording deviceplaced in an area that monitors the average temperature in thechamber.7. Preparation of Test Specimens7.1 Uncleanable stain or scum may remain on the exteriorglass surface of the specimen af
32、ter the accelerated weatheringtest. Measures shall be taken to have a clear view of the interiorglass surface for detection of frost. For example, place a maskof plastic tape650 by 50 mm or larger, on the central region ofboth exterior glass surfaces before exposing the unit toweathering conditions.
33、 Remove the mask for frost/dew pointmeasurement.7.2 The sealed insulating glass units shall be sealed aminimum of 4 weeks from date of manufacture to allow forstabilization before testing. The manufacturer shall be permit-ted to waive this requirement.8. Procedure for Seal Durability8.1 Initial Fros
34、t/Dew Point Test:8.1.1 Determine the initial frost/dew point on all airspaceson all units submitted using Test Method E546 or equivalent.8.2 High Humidity Phase:8.2.1 Place the test specimens that were tested in accordancewith 8.1 in the high humidity test apparatus. Expose sixspecimens in the high-
35、humidity test chamber at 60 6 3C and95 6 5 % relative humidity. Arrange the specimens so thateach specimen has at least 6 mm clearance all around.8.2.2 When the specified time period (days) has beenattained,7remove the test specimens. Allow the test specimensto equilibrate at 23 6 3C for not less th
36、an 24 h. Determine thefrost/dew point in accordance with Test Method E546 orequivalent. For triple-pane units, the frost/dew point shall bedetermined for all airspaces. If liquid appears, record thetemperature at which it occurs.5The only suitable meter is the Blak-Ray UV Meter with J221 sensor cell
37、. Thesole source of supply of the apparatus known to the committee at this time is UVP,LLC, 2066 West 11th Street, Upland, CA 91786. If you are aware of alternativesuppliers, please provide this information to ASTM International Headquarters.Your comments will receive careful consideration at a meet
38、ing of the responsibletechnical committee,1which you may attend.6Scotch PlasticTape #471 available from 3M Company, 3M Center, CommercialOffice Supply Division, Bldg. 230-3 South-17, St. Paul, MN 55101, has been foundsuitable for this purpose.7The amount of time under the high humidity test conditio
39、n is optional and is atthe discretion of the test specifier. When testing to Specification E2190, the amountof time required is specified in that document.FIG. 2 Location of Fluorescent Ultraviolet Lamp Relative to the Test SpecimenE2188 1038.3 Weather Cycle Phase:8.3.1 Place the six test specimens
40、tested in accordance with8.1 and 8.2 in the weather cycle chamber. Mount the specimensso that one exterior surface of the specimen is exposed to theweather cycles and the other to room temperature (23 6 3C).Install all specimens as shown in Fig. 1, taking care that nostress is induced in the test sp
41、ecimens by the method offastening.8.3.2 The test specimens shall be oriented in the weathercycle chamber with the number one surface facing the weatherchanges as it does in normal field exposure.8.3.3 CyclingEach cycle shall be 6 h 6 5 min and com-posed of the following test conditions (see Fig. 3):
42、8.3.3.1 During the first 60 6 5 min, decrease the air tem-perature from room temperature to 29 6 3C.8.3.3.2 Maintain air temperature at 29 6 3C for1h6 5 min.8.3.3.3 Control the air temperature rise from 29 6 3C toroom temperature over a period of 60 6 5 min. Use the heatsource as needed.8.3.3.4 Star
43、t the ultraviolet lamps and over a time period of60 6 5 min control the temperature rise from room tempera-ture to 60 6 3C.At the beginning of this same 60 min period,turn on water or mist supply. The interior of the chamber, at thetest specimens, shall achieve a minimum of 90 % relativehumidity (RH
44、) within this time period. It is not necessary tostay at or above 90 % RH as long as the environment achieves90 % RH sometime in this 60 min time.8.3.3.5 Turn off the water or mist supply after 60 min.8.3.3.6 Maintain temperature at 60 6 3C and continueultraviolet exposure for a period of 60 6 5 min
45、.8.3.3.7 Over a period of 60 6 5 min, decrease temperaturefrom 60 6 3C to room temperature, and continue ultravioletexposure. At the end of this period, turn off ultraviolet lamp.8.3.3.8 When the specified number of cycles has beenattained,8remove the test specimens. Allow the test specimensto equil
46、ibrate at 23 6 3C for not less than 24 h. Determine thefrost/dew point in accordance with Test Method E546 orequivalent. For triple-pane units, the frost/dew point shall bedetermined for all airspaces. If liquid appears, record theoccurrence.9. Measurements and Observations9.1 Observe the following:
47、9.1.1 Glass breakage.9.1.2 Any visible deposit in the airspace.9.2 Measure the following:9.2.1 Measure the frost/dew point of each insulating glassunit.10. Report10.1 Complete Description of Specimen Tested:10.1.1 Dimensions of the test specimen (width by height)and overall thickness.10.1.2 Type and
48、 thickness of glass.10.1.3 Glass coatings and surface locations if applicable.10.1.4 Airspace thickness(es).10.1.5 Spacer composition(s) and configuration(s).10.1.6 Corner construction.10.1.7 Type and number of spacer connecting methods/components.10.1.8 Desiccant type and quantity, if provided.10.1
49、.9 Presence and type of tube, if applicable.10.1.10 Presence and type of gas fill plug, if applicable.8The number of cycles is optional and is at the discretion of the test specifier.When testing to Specification E2190, the number of cycles is specified in thatdocument.NOTE 1This figure represents the ideal cycle described in this test method. Any temperature variation within the tolerance zone shown is acceptable.FIG. 3 Schematic Drawing of Each Cycle for Accelerated Weather Cycle TestE2188 10410.1.11 Sealant type(s) and dimensions, if provi
