1、Designation: C907 03 (Reapproved 2012)C907 17Standard 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
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 test method covers a laboratory procedure for determining the tensile adhesive strength of
3、 a preformed tape sealant.The type of failure can be determined, and the degree of cohesive/adhesive failure can be estimated.1.2 The values stated in metric (SI) units are to be regarded as the standard. The values given in parentheses are provided forinformation purposes only.1.3 The subcommittee
4、with jurisdiction is not aware of any similar ISO standard.1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices and determine the applicabil
5、ity of regulatorylimitations prior to use.1.5 This international standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World T
6、rade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2C717 Terminology of Building Seals and Sealants3. Terminology3.1 DefinitionsThe definitions of the following terms used in this test method are found in Terminology C717: adhesivefailure; cohesiv
7、e failure; preformed tape sealant; sealant; standard conditions; and substrate.4. Summary of Test Method4.1 The preformed tape sealant is compressed between two aluminum disks. The disks are pulled apart in a tensile tester tofailure. The maximum tensile strength and failure mode are recorded.5. Sig
8、nificance and Use5.1 Preformed tape sealants are tacky, deformable solids, that are used under compression between two or more substrates, invarious sealing applications where the surfaces may be of similar or dissimilar materials. This procedure measures the tensilestrength of the preformed tape se
9、alant. It also provides an indication of the cohesive nature and adhesive bonding properties of thepreformed tape sealant. This procedure is not intended to simulate actual use conditions.6. Apparatus and Accessory Materials6.1 Test Fixture, fabricated of aluminum (mill finish), in accordance with F
10、ig. 1.NOTE 1Other substrates may be substituted in 6.1.6.2 Tensile Testing Machine, or equivalent, with a jaw separation rate of 51 mm (2 in.)/min.1 This test method is under the jurisdiction ofASTM Committee C24 on Building Seals and Sealants and is the direct responsibility of Subcommittee C24.30
11、on Adhesion.Current edition approved Dec. 1, 2012June 1, 2017. Published December 2012June 2017. Originally approved in 1979. Last previous edition approved in 20082012 asC907 03 (2008).(2012). DOI: 10.1520/C0907-03R12.10.1520/C0907-17.2 For referencedASTM standards, visit theASTM website, www.astm.
12、org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what chan
13、ges have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the offic
14、ial document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States16.3 Auxiliary Hardware, for attachment of the test fixture to the tensile tester.6.4 Knife.6.5 Compression Device, such as a vise, press, or equivalent.6.6 Device, for recor
15、ding the tension load in newtons (or pounds-force).6.7 Solvent, such as xylol or toluol.6.8 Wiping Cloths, lint-free.7. Sampling7.1 Samples to be tested shall be taken from a fresh roll of preformed tape sealant after first removing and discarding the first600 mm (2 ft) of the roll.7.2 Condition the
16、 sample at 23 6 2C (73.4 6 3.6F) and 50 6 10 % relative humidity standard conditions for a minimum of24 h before preparing the test specimens.8. Test Specimens8.1 Prepare two test specimens as follows:8.1.1 Clean the surface of the test fixture with clean solvent to remove grease, oil, or residue fr
17、om previous test, and dry.8.1.2 Set the allen screw stop so that when the disks are assembled and the dowel is seated against it, the distance between theparallel disk surfaces is 3.2 mm (0.125 in.).8.1.3 Place sufficient preformed tape sealant on the face of the fixture so that when mated with the
18、matching face, the entire3.2-mm (0.125-in.) gap will be filled.FIG. 1 Test FixtureC907 1728.1.4 After mating, uniformly compress the test fixture in the compression device until the dowel contacts the allen screw stop.Check to make sure the entire 3.2-mm (0.125-in.) gap is filled with sealant. Compr
19、ess at the rate of 51 mm (2 in.)/min and holdin compression for 1 min. (Laboratories not able to comply should record the method used and approximate compression rate.)8.1.5 At the end of 1 min, remove the assembly from the press device, taking care not to disturb it.8.1.6 With a knife, trim all exc
20、ess sealant from the periphery of the assembled fixture.9. Conditioning9.1 Condition the test specimens as prepared in Section 8, for 1 h at 23 6 2C (73.4 6 3.6F) before testing.9.2 Other conditioning periods may be included if and as desired.10. Procedure10.1 Activate the tensile testing machine fo
21、r recording the force required to pull the specimen apart.10.2 Attach the test fixture to the jaws of the tensile testing machine, taking care to align them vertically, and separate at acrosshead speed of 51 mm (2 in.)/min until failure occurs.The test temperature shall be 2362C (73.463.6F). (Other
22、conditionsmay be used.)10.3 Record the peak stress load in newtons (or pounds force).10.4 Visually inspect and record the mode of preformed tape sealant failure, cohesive or adhesive and the appropriatepercentage of each type of failure.11. Calculation11.1 For each specimen, calculate the maximum te
23、nsile strength by dividing the force in newtons (or pounds force) at the peakstress load by 0.0527 m2 (or 1.976 in.2) (the bonded area of the fixture) to get units of pascals (or pounds force per square inch).11.2 If the values are not within 10 %, repeat the test.12. Report12.1 Report the following
24、 information:12.1.1 Identificaton of the preformed tape sealant, that is, the name, lot number and any other identifying characteristics,12.1.2 Maximum tensile strength,12.1.3 Mode and approximate percent of failure, adhesive or cohesive,12.1.4 Substrate used in test, and12.1.5 Conditioning and test
25、 temperatures used.13. Precision and Bias313.1 Repeatability (I(r)The repeatability (within a given laboratory) interval for 6 materials tested by 4 laboratories is 7.835psi. In future use of this test method, the difference between two test results obtained in the same laboratory on the same materi
26、alwill be expected to exceed 7.835 psi only about 5 % of the time.13.2 Reproducibility (I(R)The reproducibility (between given laboratories) interval for 6 materials tested by 4 laboratoriesis 48.611 psi. In future use of this test method, the difference between two test results obtained in a differ
27、ent laboratory on the samematerial will be expected to exceed 48.611 psi only about 5 % of the time.14. Keywords14.1 preformed tape sealant; tapes; tape sealants; tensile adhesive strength; tensile strengthASTM International takes no position respecting the validity of any patent rights asserted in
28、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 responsibility.This standard is subject to revision at any time by the res
29、ponsible 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 addressed to ASTM International Headquarters. Your comments will receive carefu
30、l 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 the address shown below.This standard is copyrighted by ASTM International,
31、 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 AST
32、M website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ Supporting data have been filed at ASTM International Headquarters and may be obtained by requesting Research Report RR: C241036.C907 173
