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.

Author: Mezisida Mazuran
Country: Bahrain
Language: English (Spanish)
Genre: History
Published (Last): 4 October 2015
Pages: 474
PDF File Size: 17.56 Mb
ePub File Size: 7.61 Mb
ISBN: 365-1-72627-541-5
Downloads: 83046
Price: Free* [*Free Regsitration Required]
Uploader: Dagore

The list does not include examples of bers from two or more generic classes of polymers spun into a single lament. Identication of the ber generic class is made by analysis of the ber spectrum using a decision chart Fig. Note 5—The internal reflection spectroscopy technique is more difficult d726 use satisfactorily than astn KBr disk or film techniques and it is not recommended for use except by an operator experienced in the technique.

Allowing material to reach its melting point results in permanent fiber change. Active view current version of standard. 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.

Already Subscribed to this document. Unless otherwise indicated, it is intended that all reagents shall conform to the specications of the Committee on Analytical Reagents of the American Chemical Society, where such specications are available. 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 c276 generic class from one producer.

  GOMEZJARA SOCIOLOGIA PDF

The analysis scheme based on solubility is very reliable.

The immersed weight is plotted as d267 function of time, and the apparent density obtained by extrapolating to zero time. Fiber density is the extrapolated apparent density at zero time.

Precision and Bias Several measurements of immersed weight are made over a period of time, until the weight becomes constant or changes very slowly. If the document is revised or amended, you will be notified by email.

An alternative test for identication of an unknown ber aatm by comparison with qstm identied bers used as reference standards. KodelT p-ethylene oxybenzoate type: Your Alert Profile lists the documents that will be monitored. The limited use of the test methods for qualitative identification cannot justify the effort that would be necessary to determine the precision and bias of the techniques. Many of the generic classes of man-made fibers are produced by several manufacturers and sold under various trademark names as follows Note 1: Cast lms from solution on a rock salt plate using a glass stirring rod and permit the solvent to evaporate.

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

Many generic classes of fibers are sold with a atsm of cross-section shapes designed for specific purposes. The methods are generally not useful for distinguishing bers of the same generic class from different manufacturers or for distinguishing different ber types of the same generic class from one producer. The limited use of the test methods for qualitative identication cannot justify the effort that would be necessary to determine the precision and bias of the techniques.

The methods have been revised completely, emphasizing infrared spectroscopic techniques for identifying man-made ber types. The infrared technique is a useful adjunct to the solubility test method.

  JAIN KALPASUTRA IN GUJARATI PDF

In order to accomplish this, it is necessary to consider the following: Many generic classes of bers are sold with a variety of cross-section shapes designed for specic astn. Wait for the specied period and check to see whether the bers have been dissolved.

Place the specimen in the sample beam of the instrument and record the spectrum while scanning from 2. It is possible for such modifications to interfere seriously with the analyses used in these test methods.

The infrared technique is a useful adjunct to the solubility test method. Considerable experience and diligence of the analyst may be necessary to resolve satisfactorily these difficulties.

Hang the wire asstm with its ee end immersed in mL of displacing liquid Astn.

ASTM D276 – 12

The method d26 often very difficult, and many of the phenomena observed when viewing bers with polarized light are subject to misinterpretation. Numerically, birefringence is the difference between the maximum and minimum refractive indices.

These test methods are a generally reliable aastm of identifying the generic types of fibers present in a sample of textile material of unknown composition. Need more than one copy? 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.