ASTM_D_2322_-_14.pdf

Designation:D232214Standard Test Method forResistance of Shoe Upper Leather to Artificial Perspiration1This standard is issued under the fixed designation D2322;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This test method covers the determination of the effectof perspiration on shoe upper leather.The leather is subjectedto treatment with a formulation of artificial perspiration spe-cific for breakdown of leather.Resistance to grain cracking asmeasured in accordance with Test Method D2210 and area lossare used as the criterion of deterioration.The artificial perspi-ration may also affect the flexibility of the leather.However,these effects have not been fully evaluated as criteria ofdeterioration in this test method.This test method does notapply to wet blue.1.2 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.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 appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D1610 Practice for Conditioning Leather and Leather Prod-ucts for TestingD2210 Test Method for Grain Crack and Extension ofLeather by the Mullen TestD2813 Practice for Sampling Leather for Physical andChemical Tests3.Significance and Use3.1 This test method gives an indication of the serviceabilityof shoe upper leather in actual wear.4.Apparatus4.1 Circulating-Air Oven,capable of maintaining the re-quired temperature within 64F(62C).4.2 Bottle,wide-mouth,12-gal(1.9-L)with suitable airtightclosure.4.3 Glass Tray,112in.(38 mm)deep.4.4 Mullen Tester.5.Reagent5.1 A solution of artificial perspiration with a pH of 8.5consisting of the following:Sodium chloride,g9.0Urea,g1.67Sodium lactate(60 percent sodium lactate),g86.0Disodium phosphate(Na2HPO412H2O),g0.165Distilled water to make 1 litre of solutionAdjust the pH of the solution with lactic acid or ammonium carbonatedepending on whether acid or base is required to bring pH to 8.5.6.Test Specimens6.1 Two test specimens 3 by 3 6 0.0625 in.(76 by 76 6 1.5mm)each shall be cut from the sample to be evaluated.Onespecimen shall be the control,the other shall be for exposure toartificial perspiration.For purposes of identification,the speci-men for exposure to artificial perspiration shall be punched(approximate 0.06-in.(1.5-mm)hole)on two corners.6.2 When taking test specimens from skins or hides refer toPractice D2813.7.Conditioning7.1 All specimens shall be conditioned according to PracticeD1610.8.Procedure8.1 Condition the control specimen at 73 6 2F(23 6 1C)and at a relative humidity of 50 6 4%for 48 h and then teston the Mullen Tester for grain crack strength in accordancewith Test Method D2210.8.2Measure all four sides of the punched specimen to thenearest164in.(0.5 mm)and average them.The averagemeasurement shall be squared and used to determine the areaof the specimen.Record area as A.1This test method is under the jurisdiction of ASTM Committee D31 on Leatherand is the direct responsibility of Subcommittee D31.03 on Footwear.This testmethod was developed in cooperation with the American Leather Chemists Assn.Current edition approved May 1,2014.Published June 2014.Originallyapproved in 1964 as D2322 64T.Last previous edition approved in 2010 asD2322 10.DOI:10.1520/D2322-14.2For 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 8.3 Immerse the marked specimen(Note 1)in the glass trayand cover with the artificial perspiration solution to a depth of34to 1 in.(19 to 25 mm).Work the specimen in the solution byfolding it grain in and rolling the fold,while applying pressurewith the finger tips.As many as three cycles of flexing may berequired to wet the leather.If leather is still not wet through,vacuum soaking may be necessary.NOTE1Only a single layer of specimen should be placed in theperspiration solution and care should be taken to prevent adjacentspecimens from coming in contact.8.4 After 1 h,remove the specimen and suspend in the12-gal(1.9-L)bottle over 1.7 oz(50 mL)of water.Seal thebottle containing the treated specimen(Note 2),and place intoa circulating-a