1、Designation:D 6651 01Standard Test Method forDetermining The Rate of Sorption and Sorptive Capacity OfNonwoven Fabrics1This standard is issued under the fixed designation D 6651;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the yea
2、r 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.1.Scope1.1 This test method covers the quantifying of the rate ofsorption of textile fabrics.1.2 This test method applies to all
3、 textile fabrics used aswiping materials for spill removal.For additional literature seethe International Nonwovens Journal2,3.1.3 The values stated in either SI units or inch-pound unitsare to be regarded separately as the standard.Within the text,the inch-pound units are shown in parentheses.The v
4、aluesstated in each system are not exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in nonconformancewith the specification.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with it
5、s 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:D 123 Terminology Relating to Textiles43.Terminology3.1 Definitions:3.1.1
6、extrinsic rate of sorption,nin textile fabrics,the rateat which a specified liquid is sorbed by a fabric on aper-unit-area basis under specified conditions.3.1.1.1 DiscussionWhile extrinsic sorptive capacity isexpressed in terms of volume per unit area,intrinsic capacity(below)has been used to descr
7、ibe capacity in terms of volumeper unit mass.By way of example,if a fabric exhibited anintrinsic capacity of 5 mL/g,that mass of fabric would hold 5mL whether is was part of a 50 g/m2or a 200 g/m2fabric.Theextrinsic sorptive capacity would,however,be four(4)timeshigher for the 200 g/m2fabric than fo
8、r the lighter weightmaterial.3.1.2 intrinsic rate of sorption,nin textile fabrics,the rateat which a specified liquid is sorbed by a fabric on aper-unit-mass basis under specified conditions.3.1.3 sorption,nin textile fabrics,a process in whichliquid molecules are taken up either by absorption or ad
9、sorp-tion,or both.3.1.4 sorptive capacity,nin textile fabrics,the maximumamount of liquid absorbed and adsorbed under specifiedconditions.3.1.5 wiper,nin textile fabrics,fabric swatches used forhousekeeping,cleaning,polishing,spill clean-up or removal.3.2 For definitions of terms used in this test m
10、ethod refer toTerminology D 123.4.Summary of Test Method4.1 A stack of wiping material squares of known mass anddimensions is placed on the surface of a thermostaticallycontrolled tank of liquid.The time required for the stack to wetout is recorded.From these measurements and from the massof the wet
11、ted stack of wipers,a rate of sorption through theplane of the wiper can be calculated.5.Significance and Use5.1 This test method can be used for acceptance testing ofcommercial shipments,but comparisons should be made withcaution because information on estimates of between-laboratory precision is l
12、imited as noted in the precision andbias section of this test method.5.1.1 If there are differences of practical significance be-tween reported test results for two laboratories(or more),comparative tests should be performed to determine if there isa statistical bias between them,using competent sta
13、tisticalassistance.As a minimum,samples used for such comparativetests should be as homogeneous as possible,drawn from thesame lot of material as the samples that resulted in disparateresults during initial testing,and randomly assigned in equalnumbers to each laboratory.Other fabrics with establish
14、ed testvalues may also be used for these comparative tests.The testresults from the laboratories involved should be comparedusing a statistical test for unpaired data,at a probability levelchosen prior to the testing series.If bias is found,either itscause must be found and corrected,or future test
15、results must1This test method is under the jurisdiction ofASTM Committee D13 on Textilesand is the direct responsibility of Subcommittee D13.64 on Nonwovens.Current edition approved April 10,2001.Published July 2001.2C.F.Mattina and J.M.Oathout,“A New Method for Determining the Rate ofSorption of Wi
16、ping Materials,”Cleanrooms,8(4),1824(1994)and InternationalNonwovens Journal,7(1),48(1995).3J.M.Oathout and C.F.Mattina,“A Comparison of Selected Industrial andHousehold Wiping Materials for Rate of Sorption,Sorptive Capacity and Strength,”International Nonwovens Journal,7(1),58(1995).4Annual Book of ASTM Standards,Vol 07.01.1Copyright ASTM,100 Barr Harbor Drive,West Conshohocken,PA 19428-2959,United States.be adjusted in consideration of the known bias.5.2 When the rate is calculated as a flux
