1、Designation: D7888 13Standard 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 and health practices and determine the applica-bility of regulatory limitations prior to
5、use.2. Referenced Documents2.1 ASTM Standards:2D123 Terminology Relating to TextilesD907 Terminology of AdhesivesF141 Terminology Relating to Resilient Floor Coverings3. Terminology3.1 Definitions:3.1.1 plasticizer, nadditives that increase the plasticity orfluidity of a material; a chemical added e
6、specially 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 and Use4.1 Plasticizer migration is detrimental to many adhesives,including hot melts, which could be possibl
7、y 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 flooring material arecompatible with proposed installation adhesive(s).5. Apparatus5.1 Circulating Air Oven,
8、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. (0.079 cmby 0.16 cm by 0.079 cm), or alternate means of application.5.6 Four Pieces of Aluminum Foil, approxi
9、mately 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 resilient.6.2 Using the recommended application method as in-structed by the floor covering or adhesive manufacturer(
10、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. by132 in. (0.079 cm by 0.16 cm by 0.079 cm) U notchedflooring trowel.6.3 Allow the adhesive on the test speci
11、mens 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.6.4 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 to
12、gether rolling completelyusing a floor covering seam-roller or similar type method toensure firm and even contact between the coated and uncoatedsurfaces.6.6 Completely wrap the test assemblies in aluminum foil sothat each assembly is fully sealed. It is recommended toenvelope and tightly seal the t
13、est specimens with two layers ofaluminum foil.1This practice is under the jurisdiction of ASTM Committee D14 on Adhesivesand is the direct responsibility of Subcommittee D14.10 on Working Properties.Current edition approved Oct. 15, 2013. Published November 2013. DOI:10.1520/D7888-13.2For referenced
14、 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 International, 100 Barr Harbor Drive, PO Box C700, West Consh
15、ohocken, PA 19428-2959. United States16.7 Place one of the test assemblies in the oven at 140 63F (60 6 2C) for 15 days 6 3 h. The second assembly shallbe maintained in controlled environment of 73 6 3F (23 62C) and 50 6 5 % relative humidity for an equal time period.6.8 After 15 days remove the tes
16、t assembly from the ovenand allow to cool at room temperature for a period of not lessthan 30 6 5 min.6.9 Remove the test assembly form 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 appa
17、rent plasticizer migration or differencesin 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 test7.2 Compare and evaluate the two test specimens and reportthe difference, in appearance or
18、 properties, between the agedsample and the 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
19、tileASTM International takes no position 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,
20、 are entirely their own responsibility.This 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 sta
21、ndardsand 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 fair hearing you shouldmake your views known to the ASTM Com
22、mittee 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). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).D7888 132
