ASTM C1378-2004(2014) Standard Test Method for Determination of Resistance to Staining《测定抗锈蚀性的标准试验方法》.pdf

1、Designation: C1378 04 (Reapproved 2014)Standard Test Method forDetermination of Resistance to Staining1This standard is issued under the fixed designation C1378; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revi

2、sion. 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 test method is intended to determine the resistanceto staining of ceramic tile surfaces.1.2 The resistance to staining is

3、determined by maintainingtest solutions in contact with ceramic tile surfaces for aspecified period of time. After exposure, the surface is cleanedin a defined manner, and the test specimens are inspectedvisually for change.1.3 The values stated in SI units are to be regarded asstandard. No other un

4、its of measurement are included in thisstandard.1.4 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 reg

5、ulatory limitations prior to use.2. Staining Agents2.1 Contrasting Grout, unsanded tile grout, applied as a neatpaste.2.2 Carbon Lamp Black.2.3 Waterproof Ink Black.2.4 Washable Ink.2.5 Potassium Permanganate Solution, 1 %, prepared from99 % KMnO4crystals, dissolve 1g of reagent into 100 mL ofdistil

6、led water.2.6 Methylene Blue Solution, 1 %.2.7 This test method may be used for exposing tile to anystaining agent deemed appropriate for the expected serviceconditions and may specify any reasonable combination oftime and temperature for the exposure period. Exposuresubstances, time, and temperatur

7、es should be selected so as toeither simulate service conditions, or accelerate staining that ispossible under expected service conditions, or bear some othermeaningful relation to expected service conditions.3. Apparatus3.1 Test Tubes, plain end glass test tubes with a diameter of20 mm and a length

8、 of 150 mm.3.2 Pipets, glass pipet with a volume of at least 50 mL withgradations in 1-mL increments.3.3 Oven, capable of maintaining a constant temperature of110 6 5C.3.4 Cloths, a supply of lintless, absorbent clothes or papertowels.3.5 Distilled or Deionized Water , for preparation of thesolution

9、s.3.6 Light Source, standard light source that supplies a300 lux of illumination.3.7 Cleaning Agents.3.7.1 Hot water.3.7.2 Weak cleaning agent, a commercial agent, not con-taining abrasive, with a pH of 6.5 to 7.5.3.7.3 Strong cleaning agent, a commercial cleaning agentcontaining abrasive, with a pH

10、 of 9 to 10.3.7.4 Suitable solvents:3 % (v/v) HCI solution, prepared from 38 % hydrochloricacid by adding 79 mL of the reagent hydrochloride acidsolution to 951 mL of distilled water.20 % KOH solution (200 g/L), prepared by dissolving 200g of 90 % potassium hydroxide into 1 L of distilled water.Acet

11、one (technical grade).4. Samples4.1 Number of Test SpecimensOne defect-free testspecimen, which is representative of the entire surface, for eachtest solution is to be used. Test specimens shall be representa-tive of the sample, and where tiles have different colors ofdecorative effects, care should

12、 be taken to include all distinc-tive parts. More test specimens may be necessary to incorper-ate all surface features.4.2 Size of SpecimensThe original tile for testing shouldbe cut to 50- by 50-mm squares for testing with each cut piecelabeled according to the testing solution to be applied.4.3 Th

13、e sample surfaces should be thoroughly cleaned witha suitable solvent, such as acetone and completely dried beforetesting.1This test method is under the jurisdiction ofASTM Committee C21 on CeramicWhitewares and Related Productsand is the direct responsibility of SubcommitteeC21.06 on Ceramic Tile.C

14、urrent edition approved Dec. 1, 2014. Published December 2014. Originallyapproved in 1997. Last previous edition approved in 2009 as C1378 04 (2009).DOI: 10.1520/C1378-04R14.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States14.4 The test

15、 specimens can be glazed or unglazed tile. If thetiles are glazed, then the staining agent should be applied to theglazed surface.5. Procedure for Staining Agent Application5.1 Application of the Staining Agent:5.1.1 Dry the test specimens thoroughly at 110 6 5Cbefore testing and then cool the tile

16、to room temperature.5.1.2 The labeled test specimens are laid out on a table in awell-ventilated area.NOTE 1Precaution: This test method involves the use of chemicalsubstances. Proper precautions for the handling of these chemicals shouldbe taken, such as protective clothing and fume hoods.5.1.3 Tra

17、nsfer 5mL of the liquid staining agent described in2.3 2.6 to a test tube.5.1.4 Place the surface to be tested of the tile face down onthe open end of the test tube.5.1.5 While firmly holding the test tube and tile assemblytogether, invert the assembly so that the back of the tile isfacing the table

18、 and the closed end of the test tube is facing up.5.1.6 Carefully place the assembly on the table and leaveundisturbed for 24 h.5.1.7 For the dry staining agents described in 2.1 and 2.2,apply a generous amount of the staining agent with a cloth inthe center of the test specimen, being sure to leave

19、 someunexposed area for comparison. The grout described in 2.1should be mixed with enough distilled water to make a neatpaste before application. For light-colored tile, black groutshould be used, and for dark tile, white grout should be used.5.2 Removal of the Test Solutions :5.2.1 After 24 h of co

20、ntact between the test specimens andthe liquid staining agents has expired, again invert the assem-bly so that the test solution is contained in the test tube, andremove the test tube from the specimen and dispose of thestaining agent properly.5.2.2 For the solid staining agents, proceed directly to

21、 thecleaning procedures.5.3 Cleaning ProceduresThe following cleaning proce-dures (A, B, C, and D) will be tried in succession until one ofthe procedures is successful at removing the stain. If the firstprocedure is successful, it is not necessary to try the remainingthree procedures. After each cle

22、aning procedure, the samplesare dried thoroughly at 110 6 5C and cooled to roomtemperature.5.3.1 Procedure A Flow of running hot water for 5 min;the surface then is wiped with a damp cloth.5.3.2 Procedure B Hand cleaning with the weak cleaningagent (3.7.2); a natural, unabrading sponge or a cloth ca

23、n beused. The surface then is rinsed with running water and finallywiped with a damp cloth.5.3.3 Procedure C Mechanical cleaning such as a rotatingbrush with hard bristles having a 8-cm diameter and automaticcleaning agent feed using the strong cleaning agent (3.7.3). Thecleaning action is applied f

24、or approximately 2 min, then thesurface is rinsed with running water and finally wiped with adamp cloth.5.3.4 Procedure DImmersion, for 24 h, of the test speci-mens in the suitable solvent listed in 3.7.4 that is capable ofremoving the stain.5.4 Dry the specimens thoroughly at 110 6 5C and cool toro

25、om temperature before evaluation.6. Evaluation of Results6.1 Visual EvaluationExamine the surface at a standarddistance of 25 cm and a standard illumination of approximately300 lux. Rotate the sample to examine it from multiple angles.Examine for differences in appearance between the treated anduntr

26、eated area. If the sample is stained visibly by the stainingagent, then the results of that testing solution will be recordedas “affected.”7. Report7.1 Make out a report with each of the staining agents used(see Fig. 1);7.2 Identify the tile being tested by type, size, and statewhether glazed or ung

27、lazed;7.3 State the test conditions, that is, type of staining agentsused, temperatures maintained during the test, and length ofexposure; and7.4 Report the results of the visual inspection for each tileby the simple statements “affected” or “not affected.”8. Precision and Bias8.1 Qualitative Proced

28、ureThis test method is a qualitativeor passfail test; hence, precision and bias are not applicable.C1378 04 (2014)2ASTM 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 ad

29、vised 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, eithe

30、r 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.

31、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 below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Indiv

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