1、Designation: F925 02 (Reapproved 2008)F925 13Standard Test Method forResistance to Chemicals of Resilient Flooring1This standard is issued under the fixed designation F925; the number immediately following the designation indicates the year of originaladoption or, in the case of revision, the year o
2、f last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscriptepsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This test method provides a procedure f
3、or determining the resistance of resilient floor covering to surface deterioration whenexposed to various chemical reagents. This test method is not intended as a staining test nor as a method to judge surface andappearance restoration of the sample after exposure to the chemical reagent.1.2 The val
4、ues stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for informationonly.mathematical conversions to SI units that are provided for information only and are not considered standard.1.3 This standard does not purport to address all of the safety conce
5、rns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatorylimitations prior to use. Specific hazard information is provided in Section 56 of this test method.2. Referenc
6、ed Documents2.1 ASTM Standards:2D2244 Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color CoordinatesF141 Terminology Relating to Resilient Floor CoveringsF142 Test Method for Indentation of Resilient Floor Tiles (McBurney Test) (Withdrawn 2007)3F386
7、 Test Method for Thickness of Resilient Flooring Materials Having Flat SurfacesF1914 Test Methods for Short-Term Indentation and Residual Indentation of Resilient Floor Covering3. Terminology3.1 For terminology relating to Resilient Floor Coverings, see Terminology F141.4. Significance and Use4.1 Re
8、silient flooring products are designed and formulated to have good resistance to most common chemicals encountered intypical use. High performance wear layers can also be used to enhance cleanability and chemical resistance. Resilient flooring usedin residential and commercial environments may be su
9、bjected to a variety of chemicals through accidental spillage or as ingredientsused for hygienic purposes. Performance is dependent upon the flooring formulation and that of the maintenance products usedon the flooring. This test method provides a means of estimating the relative susceptibility of r
10、esilient floor covering to changewhen exposed to chemical reagents.5. Apparatus5.1 Gloves, impervious vinyl or rubber,5.2 Tweezers, or forceps,5.3 Medicine Dropper, 3 in. straight glass with rubber bulb or pipette having a point opening diameter not less than 116 in. (1.6mm) or greater than 564 in.
11、(1.8 mm),1 This test method is under the jurisdiction ofASTM Committee F06 on Resilient Floor Coverings and is the direct responsibility of Subcommittee F06.30 on Test Methods- Performance.Current edition approved Jan. 1, 2008May 1, 2013. Published March 2008May 2013. Originally approved in 1985. La
12、st previous edition approved in 20022008 asF925F92502(2008).02. DOI: 10.1520/F0925-02R08.10.1520/F0925-13.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standar
13、ds Document Summary page on the ASTM website.3 The last approved version of this historical standard is referenced on www.astm.org.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version.
14、Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 1
15、00 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States15.4 White Facial Tissue.5.5 Watch Glass.5.6 Timer.5.7 Filter Paper.5.8 Small Laboratory Spatula, approximately 14 12 in.-wide blade, rounded bottom, not sharpened,5.9 Suitable Spectrophotometer or Colorimeter, with a
16、minimum 14 in. (6.35 mm) diameter opening having a cool whitefluorescent (CWF) or daylight (D-65) light source, or both, that measures color in CIE L*, a*, b* using CIE 10 standard observerand specular included (see Test Method D2244).5.10 Indentation Tester, see Test Methods F142 and F1914.5.11 Thi
17、ckness Tester, see Test Method F386.5.12 Conditioning Room or Cabinet, equipped with automatic temperature and humidity controls that will maintain 73.4 63.6F (23 6 2C) and 50 6 5 % relative humidity.6. Hazards6.1 A new medicine dropper or pipette should be used for each test reagent. If the same re
18、agent dispenser apparatus is to bereused, it shall be thoroughly cleaned in hot soapy water and alcohol, or both, prior to applying each different test reagent.6.2 Check to be sure the colorimeter is properly warmed up and calibrated prior to use.6.3 Be sure specimens are held flat when measuring co
19、lor.6.4 Be sure each specimen is marked in the corner on the back for easy identification.6.5 Dispose of chemical test reagents properly. Refer to Material Safety Data Sheets (MSDS) or precautions on the label forproper disposal. (WarningObserve all necessary precautions when handling test reagents
20、known to be flammable or potentiallyhazardous.)7. Test Specimen7.1 The specimen shall consist of a portion of the test unit at least 6 by 6 in. (153.4 by 153.4 mm) for each reagent (chemical)to be tested.7.2 Specimens shall be selected with minimal changes in surface texture.7.3 Specimens should be
21、of a color to show potential effect of reagent.8. Procedure8.1 Unless otherwise specified, condition the specimens and the test reagents (chemicals) for at least 24 h prior to testing. Theenvironment for conditioning and testing is 73.4 6 3.6F (23 6 2C) and 50 6 5 % relative humidity.8.2 Lay the spe
22、cimens face up on a firm, flat surface.8.3 Select a test area on the specimen having the flattest area and color appropriate to show the effect of the reagent and drawa square approximately 112 by 112 in. (38 by 38 mm) centered on that desired test location.8.4 If using test equipment such as an ind
23、entation tester, thickness tester or color spectrophotometer to help quantify specimenchange, take initial readings on the unexposed specimen and record values as indicated in Fig. 1.All measurements should be takenon a relatively flat spot, corresponding as closely as possible to the center of the
24、test square.Overall thickness, mils Indentation, mils Color; L, a, b Sample:DifferenceafterexposureDifference24 h afterexposureDifferenceafterexposureDifference24 h afterexposureInitial After exposureReagent Initial Initial L a b L a b E Comments12345678910AverageFIG. 1 Resistance to Chemicals Measu
25、rement FormF925 1328.5 When evaluating multiple product samples for resistance to chemicals, test in stages to permit sufficient time for cleaningand observing panels. Record results on Fig. 2.8.6 For testing liquid reagents, center a piece of filter paper within the test square, using a medicine dr
26、opper or pipette, deposit68 drops of test reagent or a sufficient amount to thoroughly wet the filter paper.8.7 If the test reagent is a paste, apply a thin layer (approximately 116 in. (1.6 mm) thick) directly to the test area. Use a spatulaor other convenient means.8.8 Place a watch glass cover ov
27、er the reagent and allow the test reagent to remain in contact with the test area for 60 6 1 min.8.9 Remove filter paper with tweezers. Blot (do not rub) residual liquid with a dry facial tissue. For paste reagents, lightly scrapesurface with the spatula to remove reagent and wipe area with dry faci
28、al tissue. Particular care must be taken during scraping andblotting so as not to disturb the exposed surface more than necessary.8.10 If residual reagent remains on the surface, lightly clean the exposed area with water or mild solvent, such as isopropanolor odorless mineral spirits, then blot dry
29、with facial tissue.NOTE 1Some solvents are flammable and can soften the surface layer, or both. If a question arises as to which are suitable, direct them to themanufacturer.8.11 When thickness, indentation, and colorimetric data are to be measured readings, they should be taken within 15 min afterr
30、emoving test reagents and recorded as indicated in Fig. 1.9. Interpretation of Results9.1 Within 5 min after removing test reagents, visually examine the exposed test area as compared to the adjacent, untested areaof similar color and texture.9.2 Subjective category ratings will all utilize the same
31、 scale of 03 with 0 = no change; 1 = slight change; 2 = moderate change;and 3 = severe change. The following categories should be rated:9.2.1 Surface DullingIndicating that the specimen suffered from a loss of gloss,9.2.2 Color ChangeIndicating that the specimen suffered discoloration or bleaching,
32、or both, and9.2.3 Surface AttackIndicating that the specimen suffered surface damage such as softening, warping, swelling, blistering,peeling, raised or rough area.9.3 If more than a slight change is noted, reevaluate sample in 24 h. If the sample is still rated as more than a slight change,apply tw
33、o coats of high quality crosslinked acrylic polish per manufacturers recommendations and rate again 1 h after applyingfinal coat of polish. The 24 h rating is optional but can be useful in determining if the affected area shows a temporary or permanentchange as a result of the reagent exposure.9.4 T
34、his test method recognizes that there are methods to potentially help quantify chemical attack on tile and noncushionedproducts. One can consider using change in thickness to measure product swell or indentation to indicate softening, in additionto the visual rating system. However, these methods an
35、d results can be misleading where there is only small change due to reagentexposure and there is danger that repeated results could well be within the reporting error of the test method.9.5 For this reason we include the methodology for reporting results, but advise attempting to quantify only when
36、changes areconsidered to be more than a slight change.9.6 Thickness ChangeReport percentage change from initial thickness (positive for swell, negative for shrinkage). Use anaverage of three tests utilizing Test Method F386.9.7 IndentationReport indentation value of test area versus unexposed test a
37、rea. Use an average of three tests using the 1 mintime test interval utilizing Test Method F142.03 Ratings Sample:Reagent SurfaceAttack ColorChange SurfaceDulling Average Comments12345678910AverageFIG. 2 Subjective Resistance to Chemicals Evaluation FormF925 1339.8 Color ChangeReport as E using Test
38、 Method D2244.10. Precision and Bias10.1 This test method is subjective and test results are nonnumeric. No statement is made about either the precision or the biassince the results are to be used for comparative testing.11. Keywords11.1 chemicals; flooring; resilient; resistanceAPPENDIX(Nonmandator
39、y Information)X1. TEST REAGENTSX1.1 Suggested Test Reagents X1.1White vinegar (5 % acetic acid)Rubbing alcohol (70 % isopropyl alcohol base)White mineral oil (medicinal grade)NaOH solution (5 %)HCl (hydrochloric acid) solution (5 %)H2SO4 (sulfuric acid) solution (5 %)Household ammonia solution (5 %
40、NH4OH)Household bleach (5.25 % NaOCl)Disinfectantphenol type (5 % active phenol)KeroseneOlive oilUnleaded gasolineASTM 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 adv
41、ised that determination of the validity 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
42、 reapproved or withdrawn.Your comments 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
43、 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 below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individ
44、ual 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/).F925 134
