1、Designation: D7888 18Standard Practice forEvaluating Adhesive and the Effects of Plasticizer FoundWithin Polyvinyl Chloride-Backed Floor Coverings1This standard is issued under the fixed designation D7888; the number immediately following the designation indicates the year oforiginal adoption or, in
2、 the case of 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 standard will provide a qualitative means to deter-mine the potential effects
3、of plasticizers contained withinpolyvinyl chloride (PVC) floor covering materials on a specificadhesive.1.2 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not c
4、onsidered standard.1.3 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, health, and environmental practices and deter-mine the applicability of regulatory limit
5、ations prior to use.1.4 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
6、TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2D123 Terminology Relating to TextilesD907 Terminology of AdhesivesD8089 Practice for Accelerated Heat Aging for Floor Cov-ering AdhesivesF141 Terminology Relating to Resilient Floor Coverings3. Terminology3.1 Defin
7、itions:3.1.1 plasticizer, nadditives that increase the plasticity orfluidity of a material; a chemical added especially to rubbersand resins to impart flexibility, workability, or elasticity.3.1.2 polyvinyl chloride (PVC), na thermoplastic polymerused in many floor covering materials.4. Significance
8、 and Use4.1 Plasticizer migration is detrimental to many adhesives,including hot melts, which could be possibly used in conjunc-tion with PVC backed flooring materials, whether resilient ortextile, broadloom, tile or plank. This practice can be used as anindicator to determine if plasticizers in the
9、 flooring material arecompatible with proposed installation adhesive(s).5. Apparatus5.1 Circulating Air Oven, capable of maintaining 140 6 3F(60 6 2C).5.2 Test Adhesive.5.3 Test Floor Covering.5.4 Floor Covering Seam-roller, (approximately 2 lb (1 kg).5.5 U Notched Trowel,132 in. by116 in. by132 in.
10、 (0.079 cmby 0.16 cm by 0.079 cm), or alternate means of application.5.6 Four Pieces of Aluminum Foil, approximately 26 in. by10 in. (66 cm by 25 cm).6. Procedure6.1 Cut four 6 in. by 6 in. (15 cm by 15 cm) pieces of thePVC backed flooring test material. Material composition canbe textile or resilie
11、nt.6.2 Using the recommended application method as in-structed by the floor covering or adhesive manufacturer(trowel, roller, or spray) apply the adhesive to the backing oftwo of the 6 in. by 6 in. (15 cm by 15 cm) pieces of floorcovering. If no application method is specified use a132 in. by116 in.
12、 by132 in. (0.079 cm by 0.16 cm by 0.079 cm) U notchedflooring trowel.6.3 Allow the adhesive on the test specimens to dry at roomconditions maintained at 73 6 3F (23 6 2C) and 50 6 5%relative humidity for not less than 3 h before testing.1This practice is under the jurisdiction of ASTM Committee D14
13、 on Adhesivesand is the direct responsibility of Subcommittee D14.10 on Working Properties.Current edition approved Nov. 1, 2018. Published November 2018. Originallyapproved in 2013. Last previous edition approved in 2013 as D7888 13. DOI:10.1520/D7888-18.2For referenced ASTM standards, visit the AS
14、TM 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 International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. Unite
15、d 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 Recommendations issued by the World Trade Organization Technical Barriers
16、to Trade (TBT) Committee.16.4 Place each of the uncoated 6 in. by 6 in. (15 cm by 15cm) pieces back-to-back to the adhesive coated specimensforming two test assemblies.6.5 Press the test assembly together rolling completelyusing a floor covering seam-roller or similar type method asshown in Fig. 1 t
17、o ensure firm and even contact between thecoated and uncoated surfaces.6.6 Completely wrap the test assemblies in aluminum foil sothat each assembly is fully sealed. It is recommended toenvelope and tightly seal the test specimens with two layers ofaluminum foil.6.7 Place one of the test assemblies
18、in the oven at 140 63F (60 6 2C) for 15 days 6 3 h in accordance with PracticeD8089. The second assembly shall be maintained in controlledenvironment of 73 6 3F (23 6 2C) and 50 6 5 % relativehumidity for an equal time period.6.8 After 15 days remove the test assembly from the ovenand allow to cool
19、at room temperature for a period of not lessthan 30 6 5 min.6.9 Remove the test assembly from the aluminum foil, andthen separate the two assemblies comparing the one taken fromthe oven, with the one allowed to remain under room condi-tions for signs of apparent plasticizer migration or differencesi
20、n adhesion. Examine the adhesive line for any gumminess oroily feel to the adhesive.6.10 Record and report all observations.7. Report7.1 Date, time and duration of test.7.2 Compare and evaluate the two test specimens and reportthe difference, in appearance or properties, between the agedsample and t
21、he benchmark sample.7.3 Any change in physical appearance in the adhesive willbe considered a failure.8. Keywords8.1 carpet tile; luxury vinyl; modular carpet; plasticizer;plasticizer migration; polyvinyl chloride; PVC backing; resil-ient; vinyl plank; vinyl tileASTM International takes no position
22、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 responsibility.Th
23、is 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 addressed to ASTM Int
24、ernational 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 the address shown
25、 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). 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:/ 1 Floor Covering RollerD7888 182
