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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This standard is not included in any packages. Allowing material to reach its melting point results in permanent fiber change.

Standard Test Methods for Identification of Fibers in Textiles

Extensive editorial changes have been made throughout the text. 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. 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.

The precision and bias of the nonstandard quantitative test methods described are strongly inuenced 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. D — 00a FIG. An alternative test for identication of an unknown ber is by comparison with properly identied bers used as reference standards. The analysis scheme based on solubility is very reliable.

Hang the wire hook with its ee end immersed in mL of displacing liquid Fig. Allowing material to reach its melting point results in permanent ber change. Frequently, several minutes of vigorous effort are required to remove all of the air. Wait for the specied period and check to see whether the bers have been dissolved. Rinse with water, allow to dry in room air. NOTE 4—With the exception of the test to distinguish silk and wool and the melting of Saran, all of the decision points of the scheme Fig.

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I p-ethylene oxybenzoate type.

ASTM D – 12 – 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 modications for such purposes as increased dyeability with certain dyestuffs may affect the infrared spectra and some of the physical properties, particularly the melting point. 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.

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. We have no amendments or corrections for this standard. For identication, the positions of the peaks according d2276 wavelength or wave number should match those of a known reference spectrum Figs.

Describe the material s or product s sampled and the method of sampling used. 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. It is desirable to have available authentic samples of the bers to be identied, and it is essential to have those that are unfamiliar. The immersed weight is plotted as a function of time, and the apparent density obtained by extrapolating to zero time.

Place the specimen in the sample beam of the instrument and record the spectrum while asrm from 2. 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.

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Dyes, lubricants, and delustrants are not present normally in amounts large enough to interfere with the analyses.

In order to accomplish this, it is necessary to consider the following: Link to Active This link will always route to the current Active version of the standard. The infrared technique is a useful adjunct to the solubility test method. 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. The infrared technique is a useful adjunct to the solubility test method.

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 fibers are produced by several manufacturers and sold under various trademark names as follows Note 1: These differences will be evident upon microscopical examination of the fiber and may interfere with wstm measurements of refractive indices and birefringence.

Extensive editorial changes were made in various sections inand the methods were reinstated as D — Many generic classes of fibers are sold with a variety of cross-section shapes designed for specific purposes. These differences will be evident upon microscopical examination of the fiber and may interfere with the measurements of refractive indices and birefringence. 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 ashm identifications.