ASTM D276 PDF

Methods D – 62 T, Identification of Fibers in Textiles were discontinued in 1 These test methods are under the jurisdiction of ASTM Committee D13 on. ASTM Da() – Designation: D – 00a (Reapproved ) Standard Test Methods for Id. ASTM D – Free download as PDF File .pdf), Text File .txt) or read online for free. Identification of textile fibres.

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Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Considerable experience and diligence of the analyst may be necessary to resolve satisfactorily these difficulties.

Extrapolate the straight-line portion back to zero time, if possible. Proceed to Checkout Continue Shopping.

Refer to the tabulation of ber physical properties in Table 1 asm this purpose. D — 00a Reapproved Standard Test Methods for Identication of Fibers in Textiles1 This standard is issued under the xed designation D ; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision.

Many generic classes of fibers are sold with a variety of cross-section shapes designed for specific purposes. Many d76 are chemically modified by their producers in various ways so as to alter their properties. As an aid in matching spectra, consult the decision chart Fig.

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ASTM D – 12 – Standard Test Methods for Identification of Fibers in Textiles

The bers should be watched during the test to determine whether there might be a mixture of ber types, some of which are soluble and some insoluble. These procedures should be carried out in a hood and the laboratory adequately ventilated. The limited use of satm test methods for qualitative identication cannot justify the effort that would be necessary to determine the precision and bias of the techniques.

Signicant differences between values reported by different observers are known to occur. The precision and bias of the nonstandard quantitative test methods described are strongly influenced by the skill of the operator.

The list does not include examples of fibers from two or more generic classes of polymers spun into a single filament.

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ASTM D – Standard Test Methods for Identification of Fibers in Textiles

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Sampling, Selection, Preparation, and Number of Specimens 6. A superscript epsilon indicates an editorial change since the last revision or reapproval. E Ethylene glycol type. Dyes, lubricants, and delustrants are not present normally in amounts large enough to interfere with the analyses.

We have no amendments or corrections for this standard. Active view current version of standard.

ASTM D276 – 12

Many of the generic classes of man-made fibers are produced by several manufacturers and sold under various trademark names as follows Note 1: Many of the generic classes of man-made bers are produced by several manufacturers and sold under various trademark names as follows Note 1: NOTE 2—For statements on precision and bias of the standard quantitative test methods for determining physical properties for conrmation of ber identication refer to the cited test method.

These differences will be evident upon microscopical examination of the fiber and may interfere with the measurements of refractive indices and birefringence. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Many generic classes of fibers are sold with a variety of cross-section shapes designed for specific purposes.

You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server. As a general guide, the lms should be cast thin enough to be nearly transparent. F Staple and fully oriented lament yarns FOYpartially oriented POY and undrawn yarns may have much lower values of birefringence and refractive index.

Link to Active This link will always route to the current Active version of the standard. The analysis scheme based on solubility is very reliable. Need more than one copy? The infrared technique is a useful adjunct to the solubility test method. The list does not include examples of bers from two or more generic classes of polymers spun into a single lament.

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You may delete a document from your Alert Profile at any time. As the voice of the U. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

In practice, bers are generally sufficiently opaque that this is not a serious problem, but it should be guarded against, especially when using m-cresol, which has a refractive index 1. The methods are generally not useful for distinguishing fibers of the same generic class from different manufacturers or for distinguishing different fiber types of the same generic class from one producer.

Please first verify your email before subscribing to alerts. The immersed weight is plotted as a function of time, and the apparent density obtained by extrapolating to zero time.

Note The list of trademarks in does not include all brands produced in the United States or abroad and imported for sale in the United States. Note 1—The list of trademarks in 1. Therefore record the time and weight at about 2-min intervals until at least 20 min total time has elapsed.

The precision and bias of the nonstandard quantitative test methods described are strongly r276 by the skill of the operator. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

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Apparatus, Reagents, and Materials The method is often very difficult, and many of the phenomena observed when viewing bers with polarized light are subject to misinterpretation. Describe the material s or product s sampled and the method of sampling used.

Note 5—The internal reflection spectroscopy technique is more difficult to use satisfactorily than the KBr disk or film techniques and it is not recommended for use except by an operator experienced in the technique.

The methods have been revised completely, emphasizing infrared spectroscopic techniques for identifying man-made ber types.