1、Designation: D 7532 09Standard Practice forDetermination of Re-tack Ability of Carpet Adhesives1This standard is issued under the fixed designation D 7532; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision.
2、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 andpeel strength
3、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 of thesafety con
4、cerns, 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:2D 907 Terminology of AdhesivesD 6004 T
5、est Method for Determining Adhesive ShearStrength of Carpet AdhesivesD 6862 Test Method for 90 Degree Peel Resistance ofAdhesives2.2 Voluntary Product Standards:3PS1 Construction and Industrial Plywood3. Terminology3.1 Many of the terms in this test method are defined inTerminology D 907.3.1.1 re-ta
6、ck, 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.3.1.2 standard conditions, n23 6 2C (73 6 3F) and50 % rela
7、tive 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 exposedto standard conditions a
8、mbient 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 adhesive, fordirect glue or adhered
9、 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 of additionaladhesive.5.2 Adhe
10、sive bonding of some carpet backings to substratesand the adhesive bonding of carpet backings to a pad founda-tion, double stick or glue application, require that prior tobonding the adhesive is to be dried sufficiently to allow for notransfer of adhesive as a result of slight finger pressure.6. App
11、aratus6.1 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 Equipment in accordance with the
12、test method tobe implemented.6.4 Timer.7. Materials7.1 AdhesiveAn adhesive classified as appropriate for theintended application.7.2 Duck Cloth4Natural, untreated, #10, 417.6 g (14.73oz).1This practice is under the jurisdiction of ASTM Committee D14 on Adhesivesand is the direct responsibility of Su
13、bcommittee D14.10 on Working Properties.Current edition approved May 1, 2009. Published June 2009.2For 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 Docu
14、ment 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.4Available from Top Value Fabrics, Division of TVF, Inc., 401 West CarmelDrive, Carmel, IN 460322529
15、, http:/.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.7.3 CarpetThe carpet specimen with backing attached asappropriate for the application.7.4 UnderlaymentCommon wood-based products such asPS1 grade marked stamped plywood underla
16、yment. 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 protocols in Test Met
17、hod D 6862 for evalu-ation of peel and Test Method D 6004 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 ensure compliance w
18、ith 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 timer for measure-ment
19、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 occur at less than 60
20、 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 intervals.The intervals
21、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 MethodsD 6862 and D 6004). There will be a total of six test specimensfor each test method and each time inter
22、val.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 bonded face of carpet a
23、ndduck 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 with Test Methods D
24、6862 andD 6004 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, identification nomencla-ture, and lot/batch number (if available).12.4 The carpet sample identifica
25、tion 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 for each exten
26、ded 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 are invited e
27、ither 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 received a fai
28、r 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 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).D7532092
