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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Standard Test Methods for Identification of Fibers in Textiles

Differences in tenacity, linear density, bulkiness, or the presence of inert delustrants normally do not interfere with analytic tests, but chemical modifications for such purposes as increased dyeability with certain dyestuffs may affect the infrared spectra and some of the physical properties, particularly x276 melting point. Purity of Reagents 8. Additional information on fiber types and trademarks is given in Refs 1, 2, and 3.

The methods have been revised completely, emphasizing infrared spectroscopic techniques for identifying man-made ber types. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.

Fiber density is the extrapolated apparent density at zero time. Therefore record the time and weight at about 2-min intervals until at least 20 min total time has elapsed. The list does not include examples of bers from two or more generic classes of polymers spun into a single lament. Sampling, Selection, Preparation, and Number of Specimens 6. Other techniques such as, microscopical examination or comparison of physical properties are used to confirm the identification or to distinguish between those fiber classes anidex, aramid, asbestos, fluorocarbon, glass, and novoloid which are not dissolved by any of the reagents used in this scheme.

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Identication of the ber generic class is made by analysis of the ber spectrum using a decision chart Fig. These procedures should be carried out in a hood and the laboratory adequately ventilated.

Please first verify your email before subscribing to alerts. These differences will be evident upon microscopical examination of the fiber and may interfere with the measurements of refractive indices and birefringence. Note 1—The list of trademarks in 1. Current edition approved Aug.

If the document is revised or amended, you will be notified by email. These differences will be evident upon microscopical examination of the ber and may interfere with the measurements of refractive indices and birefringence. Many generic classes of fibers are sold with a variety of cross-section shapes designed for specific purposes. The infrared technique is a useful adjunct to the solubility test method. We have no amendments or corrections for this standard.

Many of the generic classes of man-made fibers are produced by several manufacturers and sold under various trademark names as follows Note 1: The last approved version of this historical standard is referenced on www.

Transfer the ground mixture to a KBr-disk die and press at approximately 14 MPa psi pressure for 2 to 5 min. 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.

It is believed that the components of variance of this method are such that ber densities are reproducible to within Using a stirring rod, vigorously agitate the sample to remove occluded air. If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.

Rinse with water, allow to dry in room air.

ASTM D276 – 12

E Ethylene glycol type. The other methods, especially microscopical examination are generally not suitable for positive identification of most man-made fibers and are useful primarily to support solubility and infrared spectra identifications. 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.

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The longitudinal and cross-section photographs of the various bers have been omitted since they are published elsewhere and the usefulness for identication is limited. The method is often very difficult, and many of the phenomena observed when viewing bers with polarized light are subject to misinterpretation.

D — 00a A No. As a general guide, the lms should be cast thin enough to be nearly transparent. These test methods are a generally reliable means of identifying the generic types of fibers present in a sample of textile material of unknown composition.

Link to Active This link will always route to the current Active version of the standard. A selective solvent refer to Table 1 of Test Axtm D can be very useful in these cases, if one can be found.

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

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

The precision and bias of the nonstandard quantitative test methods described are strongly influenced by the skill of the operator. Additional information on ber types and trademarks is given in References 1, 2, and 3. Securely tie the ends of the skein and cut off the free ends.

C Varies, always weak, sometimes negative.