1、Designation: C1087 00 (Reapproved 2011)Standard Test Method forDetermining Compatibility of Liquid-Applied Sealants withAccessories Used in Structural Glazing Systems1This standard is issued under the fixed designation C1087; the number immediately following the designation indicates the year oforig
2、inal 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 covers a laboratory screening proce-dure for d
3、etermining the compatibility of liquid-applied struc-tural sealant glazing sealants when in contact with accessoriessuch as dry glazing gaskets, spacers, shims, and setting blocksafter exposure to heat and ultraviolet light.1.2 This test method includes the observation of threeparameters as follows:
4、1.2.1 Changes in the color of the sealant,1.2.2 Changes in the adhesion of the sealant to glass, and1.2.3 Changes in the adhesion of the sealant to the accessorybeing tested.1.3 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly.1
5、.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.NOTE 1At this ti
6、me, no comparable ISO standard exists.2. Referenced Documents2.1 ASTM Standards:2C717 Terminology of Building Seals and Sealants3. Terminology3.1 DefinitionsDefinitions of the following terms used inthis test method are listed in Terminology C717: adhesivefailure (adhesion loss), bead, bond breaker,
7、 cohesive failure,compatibility, gasket, glazing, sealant, setting blocks, shim,spacer, structural sealant, and structural sealant glazing.4. Summary of Test Method4.1 The test specimens are placed beneath ultraviolet lampsso that the radiation will hit the sealant directly on onespecimen, and throu
8、gh the glass, on the other specimen (seeFig. 1).4.2 The control specimens for this test method are preparedand tested identically to the test specimens except that theaccessory is eliminated.4.3 After the specimens are exposed, the test specimens arecompared to the control specimens.4.4 In the testi
9、ng of the specimens, any color change in thesealant between the test specimen and the control is noted asare any changes in the adhesion of the sealant to either the glassor to the accessory. This test method requires the preparation ofeight test specimens (four controls and four test specimens fore
10、ach accessory being evaluated).5. Significance and Use5.1 In structural sealant glazing systems, the sealant func-tions as the structural adhesive and may also function as theprimary weather seal. As the structural adhesive, the integrityof the adhesive bond is critical.5.2 Changes in color and adhe
11、sion after exposure are two ofthe criteria that can be used to determine the compatibility ofthe system. Experience has shown that accessories that causeloss of adhesion or discoloration in this test method may alsocause these occurrences in actual use.6. Apparatus and Materials6.1 Glass Panels, cle
12、ar float glass, approximately 76.2 by50.8 by 6.4 mm (3 by 2 by14 in.). Eight panels are required foreach material being tested.6.2 Bond Breaker Tape, 25.4 by 76.2-mm (1 by 3-in.) piecefor each panel. The bond breaker tape must be compatible withthe sealants being tested.6.3 Thermometer, for example,
13、 28.9 to 100C (20 to 212F).6.4 Ultraviolet (UV) lamps, UVA-340 lamps.1This test method is under the jurisdiction ofASTM Committee C24 on BuildingSeals and Sealants and is the direct responsibility of Subcommittee C24.20 onGeneral Test Methods.Current edition approved June 1, 2011. Published August 2
14、011. Originallyapproved in 1987. Last previous edition approved in 2006 as C1087 00 (2006)1.DOI: 10.1520/C1087-00R11.2For 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
15、 the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.6.5 UV Exposure ApparatusA suitable UV exposure ap-paratus will consist of four UVA-340 lamps in a symmetricalarray situated 254
16、mm (12 in.) from the surface of the testspecimens (see Fig. 3). The apparatus shall be capable ofmaintaining a temperature at the test specimens of 48 6 2C(118 6 3.6F). Infrared lamps or other sources of heat may beused to maintain the required temperature.6.6 Cleaning SolventAny solvent capable of
17、cleaning theglass is acceptable (for example, 50/50 mix of isopropylalcohol and distilled water).6.7 Test Sealant, an appropriate amount of the sealant to beused in the system.6.8 Reference SealantA light or translucent sealant of thesame composition as the test sealant. If none is available,contact
18、 the sealant supplier for recommendations on a suitablealternative.7. Preparation of Test Specimens7.1 Standard conditions of temperature and relative humid-ity used during the preparation are defined as 23 6 2C (73.463.6F) and 50 6 10 % relative humidity.7.2 Prior to use, clean the glass thoroughly
19、 with the cleaningsolvent and dry with a clean rag before the solvent is allowedto evaporate.7.3 Place a piece of compatible bond breaker tape to cover1 in. of the top surface of the glass at one end (see Fig. 2).7.4 Prepare a total of eight samples (four controls withoutaccessory and four test spec
20、imens with accessory).3Cut a pieceof accessory material approximately 6.4 by 51 by 6.4 mm (14by2by14 in.) and place it on the center of the piece of glassas shown in Fig. 2. Both the reference sealant and the testsealant are tested in contact with the accessory.7.5 Apply a bead of the test sealant o
21、n one side of theaccessory and a bead of translucent or light color referencesealant along the other side of the accessory. Tool the sealant sothat good contact with the glass occurs and the sealant is on topof the accessory. The thickness of the sealant on top of theaccessory shall be approximately
22、 3.2 mm (18 in.).7.6 The control specimens for this test are prepared andtested identically to the test specimens except that the acces-sory is eliminated.8. Conditioning8.1 Condition all the specimens for one week at standardconditions. After conditioning for seven days at standardconditions, place
23、 two test specimens (with accessory) and twocontrol specimens (without accessory) with glass side down,and place two test specimens (with accessory) and two controlspecimens (without accessory) with glass side up, under theUV lamps, in accordance with Fig. 1 (a)and1(b) for 21 days.8.2 In order to pr
24、ovide an appropriate intensity of UVradiation, replace the UVA-340 lamps after eight weeks of use.In order to provide more uniform UV radiation, replace onelamp every two weeks, in accordance with the rotation schemeshown in Fig. 4. (Discard lamp No. 3, move lamp No. 2 to lampposition No. 3, move la
25、mp No. 1 to lamp position No. 2, movelamp No. 4 to lamp position No. 1 then install the new lamp inlamp position No. 4.)3Control specimens need not be duplicated if more than one accessory is beingevaluated at one time.FIG. 1 Orientation of Test Specimen Under LampsFIG. 2 View of Test SpecimenFIG. 3
26、 UV Exposure ApparatusFIG. 4 UV Lamp RotationC1087 00 (2011)28.3 The test chamber shall maintain an air temperature of 486 2C (118 6 3.6F) when measured at the surface of the testspecimens (see Fig. 3). Check test specimen surface tempera-tures at one-week intervals.9. Procedure9.1 Record orientatio
27、n of sample under ultraviolet lights(Fig. 1).9.2 At the end of the conditioning period described inSection 6, remove the specimens from the exposure apparatusand allow the warm samples to reach room temperature. (Coolfor 4 h.)9.3 Grasp the end of the sealant that is above the bondbreaker tape. Pull
28、the sample on a 90 angle to the glass surfaceexerting force on the sealant/glass interface.9.3.1 Record the mode of failure in percent cohesive failure,C, for both the test and reference sealant as follows:C 5 100 2 % AL (1)where AL is the adhesion loss.9.4 Check the adhesion of the sealants to the
29、accessory. Pullthe sealant on a 90 angle to the accessory surface exertingforce on the sealant accessory interface.9.4.1 Record the mode of failure in percent cohesive failure(C).9.5 Observe the test and reference sealant.9.5.1 Using Table 2 as a guide, record and describe anycolor change in the tes
30、t and reference sealants.9.5.2 Record any other noticeable changes.9.6 Record data on report form (Fig. 5).10. Precision and Bias410.1 PrecisionRound-robin testing was performed bythree laboratories using two different sealants and four differentaccessory gaskets. Statistical analysis was performed
31、by com-bining all four accessory gaskets together for each set of tests,resulting in eight“ materials trialed,” instead of two for eachlaboratory.10.2 Repeatability, I(r)In future use of this test method,the difference between two test results obtained in the samelaboratory on the same material (the
32、 repeatability) will beexpected to exceed I(r) only about 5 % of the time. Results forI(r) are given in Table 1.10.3 Reproducibility, I(R)In future use of this test method,the difference between two test results obtained in differentlaboratories on the same material (the reproducibility) will beexpe
33、cted to exceed I(R) only about 5 % of the time. Results forI(R) are given in Table 1.10.4 BiasSince there is no accepted reference materialsuitable for determining the bias for the procedures in this testmethod for measuring the color change and adhesion proper-ties, no statement on bias is being ma
34、de.11. Keywords11.1 color change; compatibility; staining; structural glaz-ing; structural sealant; ultra violet exposure4Supporting data have been filed at ASTM International Headquarters and maybe obtained by requesting Research Report RR:C24-1020.TABLE 1 Precision SummarySpecific Evaluation I(r)
35、I(R)Color change, glass side up 0.803 2.166Color change, glass side down 0.782 1.826% cohesive failure of sealant to glass,glass side up21.88 % 39.08 % cohesive failure of sealant to glass,glass side down19.00 % 21.75 % cohesive failure of sealant to accessory,glass side up4.75 % 28.08 % cohesive fa
36、ilure of sealant to accessory,glass side down17.00 % 36.46 %TABLE 2 ASTM Test Method C1087 Stain and Color ChangeDescriptionsNo. Color Change Change Description0 None No change from the control.1 Very, very slight Change so slight that you are notsure it is real.2 Very slight Faint colorgenerally ye
37、llow.3 Slight Light colorcommonly yellow,orange, pink, or brown.4 Severe Distinct colorpossibly red or purplein addition to yellow, orange, pink,or brown.5 Very severe Dark colormay be black as well asother colors mentioned.Note 1The colors listed in Table 2 are only the most commonly occurringcolor
38、s. Any change of appearance from the controls should be reported.C1087 00 (2011)3ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the va
39、lidity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your co
40、mments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments hav
41、e not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple
42、 copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).FIG. 5 ASTM C1087 Compatibility Test Report FormC1087 00 (2011)4
