1、Designation:D410390(Reapproved 2009)Standard Practice forPreparation of Substrate Surfaces for Coefficient of FrictionTesting1This standard is issued under the fixed designation D4103;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,t
2、he 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 wood panels forsu
3、bsequent 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 determine the applica-bil
4、ity of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D1436 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 procedures may be depend
5、ent 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 FloorPolishesFor interla
6、boratory 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.Rinse wellwith clear water
7、,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)after thesecond coat.4.1.3 The nex
8、t 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.NOTE1These tiles may be used and reused for testing many timesafter
9、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 the tiles it is often found that theybecome
10、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 procedure is suggested:4.1.5.1 Strip the tiles of an
11、y 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 of the tile.4.1.5.2 Pile the tiles face to face an
12、d 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 212h.4.1.5.4 Remove the entire pile from the oven and let cool,still on the glass,at least overnight(15 to 16 h)at roomtemperature(approximately 73F(
13、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 D1436.After1This practice is under the jurisdiction of ASTM Committee D21 on Polishesand is the
14、 direct responsibility of Subcommittee D21.06 on Slip Resistance.Current edition approved March 1,2009.Published July 2009.Originallyapproved in 1982.Last previous edition approved in 2002 as D4103 90(2002).DOI:10.1520/D4103-90R09.2For referenced ASTM standards,visit the ASTM website,www.astm.org,or
15、contact 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 Vinyl Composition Tile.The sole source of supply of theapparatus known to the committee at this time is Chemical Spec
16、ialties 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 Headquarters.Your comments will receive careful consideration at a meetingof the responsible technical committee,2which you may attend.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 coating,place the tile in a vertical position.If at the end of 10min there is a be
