1、Designation:C90717Standard Test Method forTensile Adhesive Strength of Preformed Tape Sealants byDisk Method1This standard is issued under the fixed designation C907;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()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers a laboratory procedure fordetermining the tensile adhesive strength of a preformed tapesealant.The type of
3、 failure can be determined,and the degreeof cohesive/adhesive failure can be estimated.1.2 The values stated in metric(SI)units are to be regardedas the standard.The values given in parentheses are providedfor information purposes only.1.3 The subcommittee with jurisdiction is not aware of anysimila
4、r ISO standard.1.4 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.1.5
5、 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 TechnicalBarriers to Tra
6、de(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2C717 Terminology of Building Seals and Sealants3.Terminology3.1 DefinitionsThe definitions of the following terms usedin this test method are found in Terminology C717:adhesivefailure;cohesive failure;preformed tape sealant;sealant;standard
7、conditions;and substrate.4.Summary of Test Method4.1 The preformed tape sealant is compressed between twoaluminum disks.The disks are pulled apart in a tensile tester tofailure.The maximum tensile strength and failure mode arerecorded.5.Significance and Use5.1 Preformed tape sealants are tacky,defor
8、mable solids,that are used under compression between two or moresubstrates,in various sealing applications where the surfacesmay be of similar or dissimilar materials.This proceduremeasures the tensile strength of the preformed tape sealant.Italso provides an indication of the cohesive nature and ad
9、hesivebonding properties of the preformed tape sealant.This proce-dure is not intended to simulate actual use conditions.6.Apparatus and Accessory Materials6.1 Test Fixture,fabricated of aluminum(mill finish),inaccordance with Fig.1.NOTE1Other substrates may be substituted in 6.1.6.2 Tensile Testing
10、 Machine,or equivalent,with a jawseparation rate of 51 mm(2 in.)/min.6.3 Auxiliary Hardware,for attachment of the test fixture tothe tensile tester.6.4 Knife.6.5 Compression Device,such as a vise,press,or equiva-lent.6.6 Device,for recording the tension load in newtons(orpounds-force).6.7 Solvent,su
11、ch as xylol or toluol.6.8 Wiping Cloths,lint-free.7.Sampling7.1 Samples to be tested shall be taken from a fresh roll ofpreformed tape sealant after first removing and discarding thefirst 600 mm(2 ft)of the roll.7.2 Condition the sample at standard conditions for aminimum of 24 h before preparing th
12、e test specimens.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 June 1,2017.Published June 2017.Originallyapproved in 1979.Last previous edition approved in 201
13、2 as C907 03(2012).DOI:10.1520/C0907-17.2For 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.Copyright ASTM Internation
14、al,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and R
15、ecommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 8.Test Specimens8.1 Prepare two test specimens as follows:8.1.1 Clean the surface of the test fixture with clean solventto remove grease,oil,or residue from previous test,and dry.8.1.2 Set the allen scr
16、ew stop so that when the disks areassembled and the dowel is seated against it,the distancebetween the parallel disk surfaces is 3.2 mm(0.125 in.).8.1.3 Place sufficient preformed tape sealant on the face ofthe fixture so that when mated with the matching face,theentire 3.2-mm(0.125-in.)gap will be filled.8.1.4 After mating,uniformly compress the test fixture inthe compression device until the dowel contacts the allen screwstop.Check to make sure the entire 3.2-mm(0.125-in.)gap isfilled with sea
