ASTM_D_629_-_15.pdf

Designation:D62915Standard Test Methods forQuantitative Analysis of Textiles1This standard is issued under the fixed designation D629;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.INTRODUCTIONMethods D629-59 T,Quantitative Analysis of Textiles,were discontinued in 1969 because theresponsible subcommittee failed to recommend their adoption as a standard after several years ofpublication as a tentative.The subcommittee action was based on the members knowledge that thestandard did not include several fiber types introduced to the textile trade after the method waspublished,and that the techniques required for their identification were lacking in the text,allowingit to become out of date.The procedures included in the text,however,are believed to be reliable forthe fiber types named and the techniques described are currently being used in the trade and arereferenced by other standards sponsored by Committee D-13 on Textiles.Reinstatement as a standardusing the previously assigned number was requested since the listed procedures were reliable and thetext considered to be the best available,though not all inclusive.Extensive editorial changes weremade in various sections in 1972,and the methods were reinstated as D629-72.Editorial changes haveagain been made throughout the text,and statements on precision and bias and suitability foracceptance testing have been added.The text of Methods D629-59 T was published by theAmericanAssociation of Textile Chemists andColorists in that societys Technical Manual as“Test Method 20A-1959”issued in the years 1959through 1974.The AATCC Method was revised completely in 1975 and since published as“TestMethod 20A-1975.”1.Scope1.1 These test methods cover procedures for the determina-tion of the fiber blend composition of mixtures of the fiberslisted in 1.2.Procedures for quantitative estimation of theamount of moisture and certain nonfibrous materials in textilesare also described,for use in the analysis of mixtures,but theseare not the primary methods for the determination of moisturecontent for commercial weights.1.2 These test methods cover procedures for the followingfiber types:1.2.1 Natural Fibers:1.2.1.1 Cellulose-Base Fibers:CottonHempFlaxRamie1.2.1.2 Protein-Base Fibers:Animal hairs(other than wool)Silk,cultivatedSilk,TussahWool1.2.2 Man-Made Fibers:1.2.2.1 Cellulose-Base Fibers:Acetate(secondary)Rayon,viscose or cuprammoniumTriacetate1.2.2.2 Synthetic-Base Fibers:AcrylicAramidModacrylicNylon 6,Nylon 6-6,othersOlefinPolyesterSpandex1.3 These test methods include the following sections andtables:SectionReferenced Documents2Terminology31These test methods are under the jurisdiction of ASTM Committee D13 onTextiles and are the direct responsibility of Subcommittee D13.51 on Conditioning,Chemical and Thermal Properties.Current edition approved Feb.1,2015.Published March 2015.Originallyapproved in 1941.Last previous edition approved in 2008 as D62908.DOI:10.1520/D0629-15.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 SectionSummary of Methods4Uses and Significance5Sampling7Purity of Reagents6Moisture Content or Moisture Regain9Nonfibrous Materials8Mechanical Separation or Dissection10Chemical Test Methods:Summary of Methods11Specimens and Symbols12No.1 Acetate Mixed With Other Fibers13No.2 Modacrylic Mixed With Cellulosic Fiber or Wool14No.3 Nylon 6 or Nylon 6-6 Mixed With Natural Fibers orRayon15No.4 Rayon Mixed With Cotton16No.5 Wool or Polyester Mixed With Cellulosic Fibers or Silk17No.6 Polyester or Acrylic Mixed With Wool18No.7 Natural Cellulosic Material and Rayon Mixed WithAcrylic,Modacrylic,and Polyester19No.8 Polyester Mixed With Olefin20No.9 Polyester Mixed With Acetate or Nylon 6,6-621No.10 Acrylic Fiber or Linear Spandex Mixed With Nylon orPolyester22Microscopical AnalysisScope23Summary of Method24Sampling26Apparatus25Procedure27Keywords28TableChemical Methods for Analysis of Fiber Mixtures1Solubilities of Various Fibers in Solvents Used in ChemicalMethods2Fineness Ranges and Fiber Diameters of Various Textile Fibers3Density and Moisture Regain of Common Fiber Types41.4 The analytical procedures described in the test methodsare applicable to the fibers listed in 1.2.The test methods arenot satisfactory for the separation of mixtures containing fibersthat fall within the same generic class but differ somewhat,either physically or chemically,from each other.These testmethods are not satisfactory for the determination of bicom-ponent fibers.NOTE1Forothermethodsofanalysiscoveringspecificdeterminations,refer to:Test Methods D461,Test Method D584,MethodsD885,Test Method D1113,Test Method D1334,and Test Method D2130.Methods for moisture are covered in Methods D885,Te