ASTM D2096-2000(2005)e1 Standard Test Method for Colorfastness and Transfer of Color in the Washing of Leather《皮革洗涤时的色牢度和颜色转移性的标准测试方法》.pdf

1、Designation: D 2096 00 (Reapproved 2005)e1Standard Test Method forColorfastness and Transfer of Color in the Washing ofLeather1This standard is issued under the fixed designation D 2096; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revisi

2、on, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.e1NOTEAdjunct references were co

3、rrected editorially in April 2006.1. Scope1.1 This test method covers the determination of the color-fastness of colored leathers, with or without a surface coating.The leathers to be tested are of the type normally expected towithstand frequent laundering. This test method also covers thesimultaneo

4、us staining of adjacent textile materials when theleather specimens are washed. This test method does not applyto wet blue. Two procedures are covered depending on theapparatus used:1.1.1 Procedure A, using the Launder-Ometer,2and1.1.2 Procedure B, using an alternative washing machine.1.2 The values

5、 stated in inch-pound units are to be regardedas the standard. The values stated in parentheses are providedfor information only.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

6、 appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:3D 499 Specification for White Floating Toilet Soap2.2 ISO Standard:4ISO R105/I, Part 2 Gray Scale for Evaluating Change inColorISO R105/I, Part

7、 3 Gray Scale for Evaluating Staining2.3 ASTM Adjunct:5Leather washing apparatus (1 drawing)3. Summary of Test Method3.1 Three leather specimens 50 by 80 mm (approximately 2by 3 in.), and one piece of multifiber test fabric of nearly equalsize are washed together in soapy water at 120F (49C). After1

8、2 h of washing, the leather specimens and cloth are removedand rinsed carefully in running water at about 95F (35C).One leather specimen and the test cloth are removed andair-dried. A new piece of test cloth is added to the remainingtwo leather specimens and these are washed, as above, for12 h.The r

9、insing is repeated; again one leather specimen and the testcloth are removed for drying. The remaining leather specimen,with a new piece of test cloth, is washed again for12 h. Thisfinal leather specimen and test cloth are then rinsed and driedas above. When dry, the color of the washed leather spec

10、imensis rated by comparing it with an unwashed piece of leather.Transfer of color to the test fabric is rated by comparison withan unwashed piece of test fabric. These comparisons are madewith the aid of the proper Gray Scale. All ratings are made ondry test specimens.1This test method is under the

11、jurisdiction of ASTM Committee D31 on Leatherand is the direct responsibility of Subcommittee D31.04 onApparel This test methodwas developed in cooperation with the American Leather Chemists Assn.Current edition approved April 4, 2006. Published September 2005. Originallyapproved in 1962 as D 2096 6

12、2T. Last previous edition approved in 2000 asD 2096 00.2The Launder-Ometer and its development are described in the AmericanDyestuff Reporter, Oct. 29, 1928, p. 679. It is described also in the current TechnicalManual of the American Association of Textile Chemists and Colorists. TheLaunder-Ometer i

13、s manufactured by Atlas Electric Devices Co., 4114 N. Raven-swood Ave., Chicago, IL 60613; telephone: (773) 327-4520; fax: (773) 327-5787.Such an apparatus is illustrated in Figs. 3, 4, and 5.3For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at ser

14、viceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.4Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036.5Detailed drawings for such an apparatus are available fromAST

15、M InternationalHeadquarters. Order Adjunct ADJD2096. Original adjunct produced in 1962.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.4. Significance and Use4.1 The procedure is intended, primarily to evaluate theability of a leathe

16、r specimen to withstand fixed, and ratherstrenuous, laundering conditions. This test is not intended as arecommended washing procedure, neither household nor com-mercial. Although this test concerns itself with colorfastnessand transfer of color during washing, the washed leatherspecimens are availa

17、ble also for comparing other properties(that is, tensile strength, area change, change in outline, etc.)with those of unwashed samples.5. Apparatus5.1 Washing MachineA Launder-Ometer, or an assemblyof apparatus capable of similar test conditions (Note 1). Ineither machine, 1-pt (500-mL) specimen con

18、tainers are heldwith their bases toward a horizontal shaft and 2-in. (50 mm)out from its center of rotation. Speed of rotation shall be 40 to45 rpm. Provision shall be made for maintaining the initialtemperature of the specimen containers throughout the test.Additional agitation shall be provided by

19、14-in. (6.4 mm)stainless steel balls in the specimen containers.NOTE 1A motor-driven assembly, designed to hold 1-pt (500-mL)specimen containers so that they are relative to the axis of the motor shaftin the same way as in the Launder-Ometer, can be used.5The entireassembly, fitted with specimen con

20、tainers, shall be turned at 40 to 45 rpminside a simple boxlike container which is heated at 120F (49C) withthermostatic control. Thus, heat loss from the preheated contents of thespecimen containers is held at a minimum during the 30-min washingperiods. Such an apparatus is illustrated in Figs. 1 a

21、nd 2.5.2 Specimen Containers, glass or stainless steel, 1-pt (500-mL), washer, and cap.5.3 Balls, type 316 stainless steel,14-in. (6.4-mm) diameter,20 per specimen container.5.4 Test Cloth,6multifiber, 50 by 80 mm, three pieces pertest.NOTE 2Multifiber test fabrics are available in 6-fiber cloth, co

22、ntainingfilling strips of wool, Orlon,7Dacron,7nylon-66, bleached cotton, andacetate, assembled in 2-in. (50-mm) repeats. Tests may be run with anytest fabric of special interest and reported accordingly.5.5 Gray Scales,8consisting of the following:5.5.1 ISO R105/I, Part 2, British, for assessing th

23、e effect infastness testing, and5.5.2 ISO R105/I, Part 3, British, for determining the degreeof staining in fastness testing.6. Reagent6.1 Mild Soap Solution, 0.5 %, such as made from a white,floating, toilet soap (Specification D 499). The solution shall be6The sole source of supply of the test clo

24、th known to the committee at this timeis Testfabrics, Inc., 200 Blackford Ave., P.O. Box 420, Middlesex, NJ 08846-0420;telephone: (201) 469-6446; fax: (201) 469-1147. If you are aware of alternativesuppliers, please provide this information to ASTM Headquarters. Your commentswill receive careful con

25、sideration at a meeting of the responsible technicalcommittee, which you may attend.7Trademark of E. I. du Pont de Nemours 300 mL are required for a completethree-wash test for each specimen container.7. Test Specimen7.1 The specimen shall be a piece of leather 2 by 3 in.(approximately 50 by 80 mm).

26、 Three specimens are requiredfor each complete wash test. A fourth piece, unwashed, isrequired for purposes of comparison.8. Procedure AUsing Launder-Ometer8.1 Adjust the Launder-Ometer to maintain the temperatureat 120F (49C).8.2 Preheat the soap solution to 120F (49C) and add 150mL to each specime

27、n container.8.3 Add twenty stainless steel balls to each specimencontainer.8.4 Place a test cloth and three leather specimens in eachspecimen container. Place the gaskets and covers on thespecimen containers and clamp each one carefully to assure noleaks.in. 218 10 1012 1312 21 22mm 54 254 267 343 5

28、33 559FIG. 2 Diagram of Washing Machine (Procedure B)FIG. 3 Launder-Ometer (Procedure A)FIG. 4 Launder-Ometer Stainless Steel Specimen Containers(Procedure A)D 2096 00 (2005)e138.5 Fasten the specimen containers to the rotor and arrangethem so that an equal number of specimen containers are fixedon

29、opposite sides of the shaft. Use a blank specimen container(filled with an equivalent weight of water), if necessary, toensure a balanced load on the shaft.8.6 Run the machine for a 30-min interval. Remove andempty the specimen containers in a systematic manner to avoidconfusion in sample identifica

30、tion.8.7 Rinse well the leather specimens and test fabric in clear,running water at about 95F (35C). Squeeze and work the testpieces to ensure the removal of soap and finally to remove allexcess water. Work one leather specimen and the test fabric flatand hang these up to dry at room temperature.8.8

31、 Repeat this procedure, rewashing the remaining twoleather specimens with a new test cloth in 100 mL of soapsolution. After the12-h washing and rinsing as describedabove, remove one leather sample and the test cloth for drying.8.9 Repeat the procedure again,9rewashing for the thirdtime the remaining

32、 leather specimen with a new test cloth in 50mL of soap solution.8.10 When the leather specimens are dry, work them byhand to soften and shape them, to make them approach, as nearas possible, an unwashed specimen in size, shape, and feel.NOTE 3With many samples, this mechanical treatment gives bestr

33、esults when the leather sample is slightly damp.8.11 Evaluate the color of the washed sample by comparingit with the unwashed specimen. Use ISO R105/I, Part 2 (5.5.1)to express the degree of difference (color retention).8.12 Evaluate the staining of the test fabrics by visualinspection or, when requ

34、ired, by means of ISO R103/I, Part 3(5.5.2).9. Procedure BUsing Heated Air Bath Equipment(Optional)9.1 Preheat and adjust the air-bath assembly to maintain thetemperature at 120F (49C).9.2 Add 150 mL of soap solution and twenty stainless steelballs to each specimen container.9.3 Preheat specimen con

35、tainers (containing the above) to122F (50C) with gaskets and covers on top, but not clamped.9.4 Continue the test as outlined in 8.4-8.12.NOTE 4Paragraphs 9.1-9.3 differ from those listed in Section 7,ProcedureA, because an air bath is not as effective as the water bath of theLaunder-Ometer for brin

36、ging the specimen container and its contents tothe required temperature.10. Report10.1 The report shall include the following, reporting all testdata on the basis of dry specimens only:10.1.1 Procedure used, whether samples were washed in theLaunder-Ometer (Procedure A) or optional equipment (Proce-

37、dure B).10.1.2 Effect on the color of the test specimens, expressedand defined by reference to ISO R105/I, Part 2 (5.5.1)asfollows:10.1.2.1 Class 5Negligible or no change as shown inGray Scale Step 5.10.1.2.2 Class 4Change in color equivalent to Gray ScaleStep 4.10.1.2.3 Class 3Change in color equiv

38、alent to Gray ScaleStep 3.10.1.2.4 Class 2Change in color equivalent to Gray ScaleStep 2.10.1.2.5 Class 1Change in color equivalent to Gray ScaleStep 1.10.1.3 Staining, evaluated by visual inspection, reported asfollows for each fiber tested:Test cloth made of (type of fiber) is stained by sample.Te

39、st cloth made of (type of fiber) is not stained by sample.10.1.4 Staining, evaluated by means of ISO R105/I, Part 3(5.5.2) as follows:10.1.4.1 Class 5Negligible or no staining as shown inGray Scale Step 5.10.1.4.2 Class 4Staining equivalent to Gray Scale Step 4.10.1.4.3 Class 3Staining equivalent to

40、 Gray Scale Step 3.10.1.4.4 Class 2Staining equivalent to Gray Scale Step 2.10.1.4.5 Class 1Staining equivalent to Gray Scale Step 1.10.1.5 Type of fabric stained (that is cotton, wool, nylon,etc.).9This procedure is a modification of that listed as Test Method 61, Test IIA,Colorfastness to Washing,

41、 Domestic and Laundering, Commercial: Accelerated,described in the 198182 Technical Manual of the American Association of TextileChemists and Colorists.FIG. 5 Specimen Containers Mounted on Launder-Ometer Rotor (Procedure A)D 2096 00 (2005)e1411. Precision and Bias11.1 The mathematical and physical

42、data on which the GrayScales are based are described in the reference literature.6Theprecision in estimating the degree of color change or the degreeof staining depends somewhat on the experience of theobserver and the facility with which he can use the GrayScales.11.2 A series of evaluations of col

43、or change by a group ofnonexpert observers indicates that differences greater than oneclass (in the range of Classes 4 and 5) are not probable. In thegeometric scale, the actual difference between Class 4 andClass 5 is very small, and could lead to disagreement.However, the change between Class 5 an

44、d Class 3 is suffi-ciently obvious that the possibility of improper rating of agiven leather sample is remote.12. Keywords12.1 colorfastness; gray scale; staining; washing leatherASTM International takes no position respecting the validity of any patent rights asserted in connection with any item me

45、ntionedin 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, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committe

46、e 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 standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeti

47、ng 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 Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO

48、 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 2096 00 (2005)e15