1、Designation: D7532 09 (Reapproved 2016)Standard Practice forDetermination of Re-tack Ability of Carpet Adhesives1This standard is issued under the fixed designation D7532; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of
2、 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 practice will provide a protocol for determining theeffect of extended drying (open time) periods on the shear a
3、ndpeel strength performance of a carpet adhesive when bondinga carpet backing or standard duck cloth material to a substrate.1.2 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly.1.3 This standard does not purport to address all
4、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:2D907 Terminology of Ad
5、hesivesD6004 Test Method for Determining Adhesive ShearStrength of Carpet AdhesivesD6862 Test Method for 90 Degree Peel Resistance ofAdhesives2.2 Voluntary Product Standards:3PS1 Construction and Industrial Plywood3. Terminology3.1 Definitions:3.1.1 Many of the terms in this test method are defined
6、inTerminology D907.3.1.2 re-tack, nan industry term used to describe anadhesive performance characteristic when the original applica-tion is modified to include an extended adhesive open timeperiod followed by re-application of pressure to bond thecarpet to the substrate.3.1.3 standard conditions, n
7、23 6 2C (73 6 3F) and50 % relative humidity.4. Summary of Practice4.1 This practice is for a comparison of shear strength and90 degree peel strength performance between a standard duckcloth material versus a specific carpet backing. Performancetesting occurs after an applied test adhesive has been e
8、xposedto standard conditions ambient air for various open timeperiods. It should be noted that the use of duck cloth isnecessary since there is no bench mark or standardized carpetbacking currently produced in the United States.5. Significance and Use5.1 Selection of or development of a carpet adhes
9、ive, fordirect glue or adhered applications requires knowledge of theadhesives ability to perform adequately when it is foundnecessary to correct an installation concern, such as bubbles orwrinkles, by re-rolling or application of dead weight to theaffected area without the application or injection
10、of additionaladhesive.5.2 Adhesive bonding of some carpet backings to substratesand the adhesive bonding of carpet backings to a padfoundation, double stick or glue application, require that priorto bonding the adhesive is to be dried sufficiently to allow forno transfer of adhesive as a result of s
11、light finger pressure.6. Apparatus6.1 Applicator Trowel, with a notch pattern of 3.2 mm (18in.) wide, 2.4 mm (332 in.) deep, 3.2 mm (18 in.) flat.NOTE 1Adhesive manufacturer application instructions may recom-mend different trowel notching design.6.2 Six 1 kg (2.2 lb.) dead weights.6.3 Testing Equip
12、ment in accordance with the test method tobe implemented.6.4 Timer.7. Materials7.1 AdhesiveAn adhesive classified as appropriate for theintended application.1This practice is under the jurisdiction of ASTM Committee D14 on Adhesivesand is the direct responsibility of Subcommittee D14.10 on Working P
13、roperties.Current edition approved May 1, 2016. Published May 2016. Originallyapproved in 2009. Last previous edition approved in 2009 as D7532 09. DOI:10.1520/D7532-09R16.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For An
14、nual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from U.S. Government Printing Office Superintendent of Documents,732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http:/www.access.gpo.gov.Copyright ASTM Internation
15、al, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States17.2 Duck Cloth4Natural, untreated, #10, 417.6 g (14.73oz).7.3 CarpetThe carpet specimen with backing attached asappropriate for the application.7.4 UnderlaymentCommon wood-based products such asPS1 grade marked s
16、tamped plywood underlayment. Simulatedconcrete board, no specific product has been identified. Otherproducts recommended by the adhesive or carpet manufacturermay be used.8. Hazards8.1 There are no known hazards associated with this prac-tice.9. Sampling, Test Specimens, and Test Units9.1 Follow the
17、 protocols in Test Method D6862 for evalu-ation of peel and Test Method D6004 for evaluation of shear.10. Conditioning10.1 Prior to testing, condition the carpet, duck cloth,underlayment, and adhesive at standard conditions.10.2 The adhesive temperature is checked and recordedprior to application to
18、 ensure compliance with 10.1.11. Procedure11.1 The adhesive application, open time, bonding, andtesting are to occur at standard conditions.11.2 With the application trowel at a 45 angle spreadsufficient adhesive to cover the substrate bonding areas. Do notover apply and when completed start the tim
19、er for measure-ment of initial drying time.11.3 During the first 60 min. of initial drying time, periodi-cally check for no transfer of adhesive with slight fingerpressure. If necessary, continue the drying time past 60 min.until no transfer has occurred and record the time.NOTE 2Bonding shall not o
20、ccur at less than 60 min.11.4 The extended drying time periods begin when 60 min.of initial drying has elapsed or after a longer initial drying timein order to achieve evidence of no transfer.11.5 The test specimen assemblies are prepared at theconclusion of three different extended drying time inte
21、rvals.The intervals are 4 h, 12 h, and 24 h.11.6 When an open time interval occurs, prepare a set ofthree (3) test specimens with carpet and three (3) test speci-mens with duck cloth for each test method (Test MethodsD6862 and D6004). There will be a total of six test specimensfor each test method a
22、nd each time interval.11.7 On a flat horizontal working surface position theadhesive coated substrate facing upward. Position the carpetbacking surface or either side of duck cloth, or both, to fullycontact the test adhesive surface. Place a second piece ofsubstrate to cover the top of the non bonde
23、d face of carpet andduck cloth swatch.11.8 Placea1kg(2.2 lb) weight onto the top substrate. Thisdead weight load is positioned on center to provide a uniformload to the bonding area.11.9 Remove the dead weight load after 30 6 5 s and begintesting within 10 min. thereafter.11.10 Test in accordance wi
24、th Test Methods D6862 andD6004 procedures respectively.12. Report12.1 Test date and test location.12.2 Preparation, drying, and testing environment tempera-ture and relative humidity.12.3 The type of carpet adhesive, identificationnomenclature, and lot/batch number (if available).12.4 The carpet sam
25、ple identification nomenclature.12.5 The underlayment identification nomenclature, includ-ing thickness and treatments.12.6 The approximate application thickness and trowel typeused to apply.12.7 The time to achieve no transfer.12.8 The shear or peel strength, or both, results for each testspecimen
26、for each extended drying time interval.13. Keywords13.1 direct glue; double stick; open time; re-bond; re-tackThis 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
27、 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 have not
28、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 copie
29、s) 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 Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ from Top Value Fabrics, Division of TVF, Inc., 401 West CarmelDrive, Carmel, IN 460322529, http:/.D7532 09 (2016)2
