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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The analysis scheme aetm on solubility is very reliable. The immersed weight is plotted as a function of time, and the apparent asttm obtained by extrapolating to zero time. For identication purposes these values should be regarded as indicating only the relative values of the properties. Many fibers are chemically modified by their producers in various ways so as to alter their properties. Test Method 20 for Identication of Fibers in Textiles2 3.

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

D The ber is opaque. Current edition approved Aug. It is possible to make an identication using a sample of less than 10 mg of each type of ber present. The analysis astmm based on solubility is very reliable. This standard has been approved for use by agencies of the Department of Defense. The precision and bias of the nonstandard quantitative test methods described are strongly influenced by the skill of the operator.

As the voice of the U. Need more than one copy? These test methods are a generally reliable means of identifying the generic types of fibers present in a sample of d27 material of unknown composition. NOTE aastm internal reection spectroscopy technique is more difficult to use satisfactorily than the KBr disk or lm techniques and it is not recommended for use except by an operator experienced in the technique.

A selective solvent refer to Table 1 of Test Methods D can be very useful in these cases, if one can be found. We have no amendments or corrections for this standard. 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.

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Many fibers are chemically modified by their producers in various ways so as to alter their asrm.

It is possible for such modifications to interfere seriously with the analyses used in these test methods. Purity of Reagents 8. Allowing material to reach its melting point results in permanent fiber change. Proceed to Checkout Continue Shopping. The index of refraction is equal to the ratio of the sine of the angle of the incident ray to the sine of the angle of the refracted ray angles measured from the normal to the common boundary. 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.

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. Your Alert Profile lists the documents that will be monitored. Determine the refractive indices for plane-polarized light parallel to and perpendicular to the ber length within 0.

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 Many generic classes of fibers are sold satm a variety of cross-section shapes designed for specific purposes.

Single-determination density estimates by one operator for one sample of ber from measurements in two different displacing liquids one a mild solvent for the ber, the other a mild swelling agent agreed to within 0.

Referenced Documents purchase separately The documents listed below are referenced within asrm subject standard but are not provided as part of the standard. Test results for ber density will also vary depending on the test method used.

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These differences will be evident upon microscopical examination of the fiber and may interfere with the measurements of refractive indices and birefringence. This standard is not included in any packages.

Standard Test Methods for Identification of Fibers in Textiles

Signicant differences between values reported by different observers are known to occur. 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. Identication of the ber generic class is made by analysis of the ber spectrum using a decision chart Fig.

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. In order to accomplish this, it is necessary to consider the following: 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.

Rinse with water, allow to dry in room air. Several measurements of immersed weight are made over a period of time, until the weight becomes constant or changes very slowly. Insoluble specimens may be removed from the solvent, rinsed in distilled water, and used for subsequent analyses, if required by limited sample size.

ASTM D – 00a() Standard Test Methods for Identification of Fibers in Textiles

Interpretation of Results Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards. Many of the generic classes of man-made fibers are produced by several manufacturers and sold under various trademark names asm follows Note 1: The precision and bias of the nonstandard quantitative test methods described are strongly inuenced by the skill of the operator.

The density gradient column may also be used for separation.