ASTM C1367-2006 Standard Test Method for Dead Load Resistance of a Sealant in Elevated Temperatures《密封件升温状态下静载阻力的标准试验方法》.pdf

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1、Designation: C 1367 06Standard Test Method forDead Load Resistance of a Sealant in ElevatedTemperatures1This standard is issued under the fixed designation C 1367; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last re

2、vision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers a laboratory procedure fordetermining the heat resistance of sealants. This test method isconducted

3、under dead load in a shear mode. This test methodwas previously written to include only hot applied sealants.1.2 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are provided forinformation purposes only.1.3 This standard does not purport to address al

4、l 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.1.4 The subcommittee with jurisdiction of this standard isnot a

5、ware of any similar or equivalent ISO standard.2. Referenced Documents2.1 ASTM Standards:2B 209 Specification for Aluminum and Aluminum-AlloySheet and PlateC 717 Terminology of Building Seals and SealantsC 1036 Specification for Flat GlassC 1375 Guide for Substrates Used in Testing Building Sealsand

6、 Sealants3. Terminology3.1 DefinitionsDefinitions of the following terms used inthis test method are found in Terminology C 717, 4.1: adhesivefailure, cohesive failure, hot-applied sealant, sealant, andsubstrate.3.2 Definitions of Terms Specific to This StandardDefinitions of the following terms use

7、d in this test method arefound in Terminology C 717, 4.2: applicator and specifiedtemperature.4. Summary of Test Method4.1 The sealant is placed between glass and aluminumsubstrates. The specimen conditioning time is recorded. Thespecimen is heated in shear mode with a weight suspendedfrom the speci

8、men. The weight applied and the time that ittakes for the specimen to fail is recorded.5. Significance and Use5.1 Sealants are generally subjected to stresses in end-useapplications. This test method measures the heat resistance ofsealants when subjected to dead load shear stresses while underheat.6

9、. Apparatus6.1 Sealant Applicator or Oven, capable of maintaining thesealant within 62.8C (65F) of the specified temperature.6.2 Substrates:6.2.1 Annealed glass that is 25.4 mm wide by 76.2 mm longand 6.35 mm thick (1 in. by 3 in. by 0.25 in.). (SeeSpecification C 1036.)6.2.2 Aluminum alloy 5052-H32

10、 that is 25.4 mm wide by76.2 mm long and 0.508 mm thick (1 in. by 3 in. by 0.020 in.).(See Specification B 209.)6.2.3 Other substrates may be used when specified (Fig. 1).6.3 Template, to provide 3.28-mm (18-in.) sealant thickness(Fig. 2).6.4 Hot Knife or Spatula.6.5 Test Oven, capable of maintainin

11、g specified temperaturewithin 62.8C (65F). This oven must contain some apparatusfor suspending the specimens in shear mode during testing.Automatic timing devices and recorders may be used to recordthe time it takes for the test specimens to shear apart.7. Sampling7.1 Sealant shall be free of extern

12、al surface contaminantssuch as talc, oil, dust, and moisture. Handling of the sealantsurfaces in contact with the substrate shall be minimized.7.2 Condition not less than 250 g of sealant (and sufficientportion of other components, if a multicomponent) in a closedcontainer for 24 h at 23 6 2C(73.4 6

13、 3.6F) and 50 6 5%relative humidity.1This test method is under the jurisdiction ofASTM Committee C24 on BuildingSeals and Sealants and is the direct responsibility of Subcommittee C24.30 onAdhesion.Current edition approved Sept. 1, 2006. Published September 2006. Originallyapproved in 1997. Last pre

14、vious edition approved in 2001 as C 136701.2For 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.1Copyright ASTM In

15、ternational, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.8. Test Specimens8.1 Prepare five test specimens from the bulk sample byusing the applicator or oven method.8.1.1 Applicator Method:8.1.1.1 Clean the glass and aluminum surfaces according tothe procedure

16、s set forth in Guide C 1375.FIG. 1 Assembly of Test Sealant on SubstratesNOTE 1The template shall be made of a material of low thermalconductivity, such as wood or fiberglass.FIG. 2 TemplateC13670628.1.1.2 Using the appropriate die or nozzle, apply a 25.4 by25.4-mm (1 by 1-in.) layer of sealant onto

17、 one end of the glasssurface at a thickness that when compressed will comply with8.1.1.4. All substrates shall be at a temperature of 23 6 2C(73.4 6 3.6F). Apply the sealant at the temperature specifiedby the sealant manufacturer.8.1.1.3 Immediately after sealant application, place thealuminum subst

18、rate onto the sealant to form an overlap of 6.45cm2(1 in.2)(Fig. 1).8.1.1.4 Using a template (Fig. 2), compress the overlayedsealant to form a 3.18-mm (18-in.) thick overlap (Fig. 3).8.1.1.5 Remove excess sealant from the specimen with a hotknife or spatula.8.1.2 Oven Method:8.1.2.1 Clean the glass

19、surface according to the proceduresset forth in Guide C 1375.8.1.2.2 Place sufficient sealant onto the substrate so thatwhen compressed, a 6.45-cm2(1-in.2) overlap that will complywith 8.1.2.5 is obtained.8.1.2.3 Clean the aluminum substrate according to theprocedures set forth in Guide C 1375.8.1.2

20、.4 Separately place both the glass with sealant and theoverlapping aluminum into an oven and condition for 30 minat the specified application temperature.8.1.2.5 Immediately upon removing the substrates from theoven, place the aluminum substrate onto the sealant over theglass substrate (Fig. 1). Usi

21、ng the template (Fig. 2), compressthe overlayed sealant to form a 3.18-mm (18-in.) thick overlap(Fig. 3).8.1.2.6 Remove excess sealant from the specimen with a hotknife or spatula.8.2 When the specimens are ready to handle, either becausethey have cooled or have been allowed to cure at specifiedcond

22、itions, cover the end of the glass substrate with severallayers of masking tape. Press the tape firmly onto the glass. Cutsmall rectangular areas out of the tape so that the glasssubstrate can be seen.8.3 When the specimens are ready for testing, prepare thealuminum end to hold a 500-g (1.10-lb) wei

23、ght for the durationof the test. This can be done by drilling or punching a hole atthe end of the aluminum substrate (centering the hole). Thishole is used for suspending the 500-g test weight.Alternatively,the end can be punched to create a raised surface or otherwisemodified to allow suspension of

24、 the weight.9. Conditioning9.1 Condition all test specimens at 23 6 2C (73.4 6 3.6F)and 50 6 10 % relative humidity for at least 24 h prior totesting.9.2 Additional conditioning may be done as specified bymutual agreement between the purchaser and sealant manufac-turer.10. Procedure10.1 Suspend the

25、glass end of the specimen in the oven setat the specified test temperature 62.8C ( 65F). Clips can beattached to the glass (over the cut out rectangle) and suspendedfrom the top of the oven. Clamps may also be used or anydevice that allows the specimens to hang vertically during thetest.10.2 Attach

26、a 500-g (1.10-lb) weight to the aluminum end ofthe specimen. Some weights have hooks permanently attached.Alternatively, any device that allows the weight to hangvertically during the test may be used.10.3 Close the oven door and maintain the specified testtemperature for the duration of the test.10

27、.4 Record the time in minutes to shear failure of thespecimens.10.5 Examine the shears and record the type of failure,adhesive or cohesive, and percentage of each.NOTE 1The oven must be at the specified test temperature beforesuspending specimens. The specimens should be suspended as quickly asFIG.

28、3 Test Assembly on Template After CompressionC1367063possible to avoid excessive heat loss. The oven should be monitored toensure that the specified test temperature is maintained for the duration ofthis test method.11. Report11.1 Report the following information:11.1.1 Sealant name and any other id

29、entifying characteris-tics,11.1.2 Equipment used to apply the sealant,11.1.3 Specified test temperature and load applied,11.1.4 Average time to failure in minutes,11.1.5 Type of failure, adhesive or cohesive, and percentageof each,11.1.6 Any substrate deformation during testing and thedegree of defo

30、rmation,11.1.7 Sealant application temperature,11.1.8 Oven temperature and time of conditioning,11.1.9 Substrates tested,11.1.10 Substrate cleaning procedure, and11.1.11 Any additional conditioning as allowed by 9.2.12. Precision and Bias12.1 The precision and bias of this test method are based onda

31、ta obtained from four laboratories using aluminum and glasssubstrates and three sealants. Both applicator and oven meth-ods were used and the mode of failure on all samples wascohesive.12.2 The repeatability (within a given laboratory) intervalfor three materials tested by four laboratories is 4.314

32、 min. Infuture use of this test method, the difference between two testresults obtained in the same laboratory on the same materialwill be expected to exceed 4.314 min only about 5 % of thetime.12.3 The reproducibility (between given laboratories) inter-val for three materials tested by four laborat

33、ories is 31.562 min.In future use of this test method, the difference between twotest results obtained in a different laboratory on the samematerial will be expected to exceed 31.562 min only about 5 %of the time.13. Keywords13.1 dead load shear; heat resistance; time to failureASTM International ta

34、kes 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 validity of any such patent rights, and the riskof infringement of such rights, are entirely their own r

35、esponsibility.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 comments are invited either for revision of this standard or for additional standardsand should be addre

36、ssed 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 have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at t

37、he 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 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).C1367064