1、Designation: D 4103 90 (Reapproved 2009)Standard Practice forPreparation of Substrate Surfaces for Coefficient of FrictionTesting1This standard is issued under the fixed designation D 4103; the number immediately following the designation indicates the year oforiginal adoption or, in the case of rev
2、ision, 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 practice covers procedures for the preparation ofOVCT (Official Vinyl Composition Tile) and wo
3、od panels forsubsequent use in tests to measure the coefficient of friction.1.2 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 determi
4、ne the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D 1436 Test Methods for Application of Emulsion FloorPolishes to Substrates for Testing Purposes3. Significance and Use3.1 The reliability of any of the practices using panelsprepared by these pro
5、cedures may be dependent upon themanner and care in which the test panels are prepared. Havingthese practices in a single procedure eliminates the necessityfor covering these details in all of the practices wherein thepanels are used.4. Test Panels (OVCT)4.1 Preparation of OVCT for Testing Emulsion
6、FloorPolishesFor interlaboratory and specification testing, tiles ofOVCT shall be used.3The tiles are prepared for use as follows:4.1.1 Thoroughly scrub all tiles using No. 00 steel wool andany suitable aqueous type wax remover or stripper. Scrub hardto help smooth out high and low spots on the tile
7、. Rinse wellwith clear water, towel dry, and air dry for 15 to 30 min in arack that allows air to reach both sides of the tile.4.1.2 Apply two coats of any suitable floor polish using anymethod as prescribed in Section 5. Allow to dry 2 h betweencoats and a minimum of an overnight dry (15 to 16 h) a
8、fter thesecond coat.4.1.3 The next day, strip off all the polish from the tilesfollowing the procedure used in 4.1.1.4.1.4 Repeat the coating (4.1.2) and stripping (4.1.1) opera-tions four more times. A total of ten coats of polish will thenhave been applied and removed.NOTE 1These tiles may be used
9、 and reused for testing many timesafter having been prepared once in accordance with 4.1.1-4.1.4. Tilesshould be discarded when they show excessive wear or when erraticresults are obtained when used with testing devices. At least 25 tests canbe run before this will be noticed.4.1.5 When scrubbing th
10、e tiles it is often found that theybecome distorted and are no longer flat. Any of the devicesused for measuring coefficient of friction will give poorreproducibility if the tiles are not flat. Therefore, it is recom-mended that the tiles be flattened prior to coating for a test. Thefollowing proced
11、ure is suggested:4.1.5.1 Strip the tiles of any previous polish using theprocedure given in 4.1.1. (If the procedures 4.1.1-4.1.4 havebeen followed exactly, this should not be necessary.) Rinsewell with clear water, towel dry, and air dry for 15 to 30 minin a rack that allows air to reach both sides
12、 of the tile.4.1.5.2 Pile the tiles face to face and back to back on a pieceof glass slightly larger than the tiles.4.1.5.3 Place the tiles on the glass in an oven at 105 to 115F(40.6 to 46.1C) for 2 to 212 h.4.1.5.4 Remove the entire pile from the oven and let cool,still on the glass, at least over
13、night (15 to 16 h) at roomtemperature (approximately 73F (22.8C).4.1.5.5 The tiles are now ready for coating with the testpolishes.5. Application of Test Polish5.1 Apply one coat of the emulsion polish to be tested, usingany of the five methods described in Method D 1436. Aftercoating, place the til
14、e in a vertical position. If at the end of 101This practice is under the jurisdiction of ASTM Committee D21 on Polishesand is the direct responsibility of Subcommittee D21.06 on Slip Resistance.Current edition approved March 1, 2009. Published July 2009. Originallyapproved in 1982. Last previous edi
15、tion approved in 2002 as D 4103 90 (2002).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 Document Summary page onthe ASTM website.3OVCT is Official V
16、inyl Composition Tile. The sole source of supply of theapparatus known to the committee at this time is Chemical Specialties Manufac-turers Assn., 1001 Connecticut Ave., N.W., Washington, D.C. 20036. If you areaware of alternative suppliers, please provide this information to ASTM Interna-tional Hea
17、dquarters. Your comments will receive careful consideration at a meetingof the responsible technical committee,2which you may attend.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.min there is a bead of polish at the bottom of the t
18、ile, wipe itoff and allow the tile to dry in this vertical position for2hatstandard conditions. (See Section 3 of Test Method D 1436.)5.1.1 Reverse the tile, top to bottom (rotate tile 180) andapply a second coat in accordance with Test Method D 1436 asthe first. This rotation will equalize the film
19、 thickness. Allowthe second coat to dry 18 to 24 h at standard conditions (seeSection 3 of Test Method D 1436) before testing.5.2 Regardless of the method used for coating test tile, onlyone method shall be used if a series of tests are being run on asingle polish or a group of polishes.5.3 If there
20、 is insufficient polish available to apply two coatsas recommended in 5.1, only one coat may be applied. If aseries of tests is being run, the same number of coats shall beused for all tests in the series.6. Test Panels (Wood)6.1 Preparation of Wood Panels for Testing Solvent-Based(liquid or paste)
21、PolishesFor interlaboratory and specifica-tion testing, 9 by 9 by38 in. (229 by 229 by 9.5 mm) blocks oflaminated oak shall be used.6.1.1 Thoroughly clean blocks with mineral spirits to re-move wax (new blocks usually have a factory coating of wax).Follow with a mineral spirits rinse to insure remov
22、al of allresidual wax. Allow at least 30 min prior to coating for alltraces of the mineral spirits to evaporate. Panels may be usedover and over again providing they are stored properly. Blocksnot stored properly may warp. Warped panels will not givereproducible results if used for subsequent coeffi
23、cient offriction testing. Care should be taken to store blocks in a flatposition and use only flat blocks for testing.7. Application of Test Polish7.1 Using a small amount of the test polish on a clean cottoncloth (about3gon4ply3by3in.(76by76mm), apply aneven coat of the test polish to a clean panel
24、 and allow to dryprior to buffing (one hour should be sufficient). Buff the driedpolish with a clean, dry cloth using moderate pressure, tomaximum shine.7.1.1 After buffing, apply a second coat of polish, allow todry, and again buff to maximum shine.7.2 When polished to maximum shine, the blocks are
25、 nowready for subsequent testing.8. Keywords8.1 coefficient of testing; polishesASTM 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 val
26、idity 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 responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your com
27、ments 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
28、 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, 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).D 4103 90 (2009)2
