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  • ASTM
    D629-08 Standard Test Methods for Quantitative Analysis of Textiles
    Edition: 2008
    $134.78
    Unlimited Users per year

Description of ASTM-D629 2008

ASTM D629 - 08

Standard Test Methods for Quantitative Analysis of Textiles

Active Standard ASTM D629 | Developed by Subcommittee: D13.51

Book of Standards Volume: 07.01




ASTM D629

Significance and Use

Test Methods D 629 for the determination of quantitative analysis of textiles may be used for acceptance testing of commercial shipments but caution is advised since information on between-laboratory precision is lacking. Comparative tests as directed in 5.1.1 or by Table D 1909 may be advisable.

In case of a dispute arising from differences in reported test results using Test Methods D 629 for acceptance testing of commercial shipments, the purchaser and the supplier should conduct comparative tests to determine if there is a statistical bias between their laboratories. Competent statistical assistance is recommended for the investigation of bias. As a minimum, the two parties should take a group of test specimens which are as homogeneous as possible and which are from a lot of material of the type in question. The test specimen should then be randomly assigned in equal numbers to each laboratory for testing. The average results from the two laboratories should be compared using Student's t -test and an acceptable probability level chosen by the two parties before the testing began. If a bias is found, either its cause must be found and corrected or the purchaser and supplier must agree to interpret future test results in the light of the known bias.

The effects of the various reagents used in the chemical methods on the residual fibers in a blend depend upon the history of the fibers and, unless otherwise stated, are generally too small or too uncertain to warrant the application of correction factors.

Fiber composition is generally expressed either on the oven-dry mass of the original sample or the oven-dry mass of the clean fiber after the removal of nonfibrous materials. If nonfibrous materials are not first removed from the textile before the fiber analysis is carried out, or if the treatments described in Section 8 are incapable of removing them, any such materials present will increase the percentage of the fiber constituent with which they are removed during the analysis, assuming they are soluble in the solvent used.

The analytical methods are intended primarily for the separation of binary mixtures of fibers. These procedures may also be used for the analysis of mixtures containing more than two types of fibers by selecting the best combination of methods to use (Table 1). Since a sequence of solvents on a given fiber may produce different results than the expected results from a single solvent, it is advisable to determine the results of such sequential effects when testing multiple fiber blends. It is sometimes more convenient to separate mechanically the yarns in a textile which are of similar types, and then use the appropriate chemical method to analyze each of the components. Table 2 shows the solubilities of the various fibers in different chemical reagents.

1. Scope

1.1 These test methods cover procedures for the determination of the fiber blend composition of mixtures of the fibers listed in 1.2. Procedures for quantitative estimation of the amount of moisture and certain nonfibrous materials in textiles are also described, for use in the analysis of mixtures, but these are not the primary methods for the determination of moisture content for commercial weights.


2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

D123 Terminology Relating to Textiles

D276 Test Methods for Identification of Fibers in Textiles

D461 Test Methods for Felt

D584 Test Method for Wool Content of Raw Wool--Laboratory Scale

D885 Test Methods for Tire Cords, Tire Cord Fabrics, and Industrial Filament Yarns Made from Manufactured Organic-Base Fibers

D1113 Test Method for Vegetable Matter and Other Alkali-Insoluble Impurities in Scoured Wool

D1193 Specification for Reagent Water

D1334 Test Method for Wool Content of Raw Wool--Commercial Scale

D1576 Test Method for Moisture in Wool by Oven-Drying

D1909 Standard Table of Commercial Moisture Regains for Textile Fibers

D2130 Test Method for Diameter of Wool and Other Animal Fibers by Microprojection

D2462 Test Method for Moisture in Wool by Distillation With Toluene

D2494 Test Method for Commercial Mass of a Shipment of Yarn or Manufactured Staple Fiber or Tow

D2495 Test Method for Moisture in Cotton by Oven-Drying

D2654 Test Method for Moisture in Textiles

AATCC Method

20 A Test Method for Fiber Analysis: Quantitative AATCC Technical Manual, available from the American Association of Textile Chemists and Colorists, P.O. Box 12215, Triangle Park, NC 27709.

Keywords

Acceptance criteria/testing--textile fabrics/fibers; Animal fibers; Bast and leaf fibers/products; Cellulose and cellulose derivatives; Cellulose fiber; Chemical properties--textiles; Composition analysis--textiles; Cotton fibers; Cross-section measurement/properties; Dissection; Extractable matter content--textile fabrics/fibers; Fiber composition; Flax fiber and products; Hemp fibers/products; Man-made textile fibers; Mechanical dissection; Microscopic examination--textiles; Moisture analysis--textile fabrics/fibers; Nonfibrous material; Protein-base fibers; Quantitative analysis/measurement; Ramie; Sampling--textiles; Silk; Synthetic-base fibers; Textile fibers; Textile fibers--bast and leaf; Textile fibers--man-made; Wool and wool top;


ICS Code

ICS Number Code 59.080.01 (Textiles in general)


DOI: 10.1520/D0629-08

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ASTM D629

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ASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide.

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