BS ISO 2403-2014 Textiles Cotton fibres Determination of micronaire value《纺织品 棉纤维 马克隆尼值的测定》.pdf
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1、BSI Standards PublicationBS ISO 2403:2014Textiles Cotton fibres Determination of micronairevalueBS ISO 2403:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 2403:2014.The UK participation in its preparation was entrusted to TechnicalCommittee TCI/24, Physic
2、al testing of textiles.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2014. Pu
3、blished by BSI StandardsLimited 2014ISBN 978 0 580 69630 5ICS 59.060.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 28 February 2014.Amendments issued since pub
4、licationDate Text affectedBS ISO 2403:2014 ISO 2014Textiles Cotton fibres Determination of micronaire valueTextiles Fibres de coton Dtermination de lindice micronaireINTERNATIONAL STANDARDISO2403Second edition2014-02-01Reference numberISO 2403:2014(E)BS ISO 2403:2014ISO 2403:2014(E)ii ISO 2014 All r
5、ights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2014All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without pr
6、ior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandB
7、S ISO 2403:2014ISO 2403:2014(E) ISO 2014 All rights reserved iiiContents PageForeword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Principle 15 Apparatus and materials 16 Atmosphere for conditioning and testing 27 Test Specimen 28 Procedure. 29 Calculation and expression of resu
8、lts . 310 Test report . 3Annex A (informative) Method of calibration of instruments 4Annex B (informative) Operation of the micronaire airflow instruments 5Annex C (informative) Operation of the Wira Fineness Meter (Cotton Model) 7BS ISO 2403:2014ISO 2403:2014(E)ForewordISO (the International Organi
9、zation for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been establishe
10、d has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.T
11、he procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the
12、editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent
13、rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an e
14、xplanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this d
15、ocument is ISO/TC 38, Textiles, Subcommittee SC 23, Fibres and yarns.This second edition of ISO 2403 cancels and replaces the first edition (ISO 2403:1972), which has been technically revised.iv ISO 2014 All rights reservedBS ISO 2403:2014INTERNATIONAL STANDARD ISO 2403:2014(E)Textiles Cotton fibres
16、 Determination of micronaire value1 ScopeThis International Standard specifies a method of determining the micronaire value of loose disorientated cotton fibres taken from bales, laps and slivers, or other sources of lint cotton.2 Normative referencesThe following documents, in whole or in part, are
17、 normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 139, Textiles Standard atmospheres for conditioning a
18、nd testingISO 1130, Textile fibres Some methods of sampling for testing3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1micronaire valuemeasure of the air permeability of a mass of cotton under specified conditions, expressed in terms of an arbit
19、rary scale, the so-called micronaire scaleNote 1 to entry: The micronaire scale is based on a range of cottons to which micronaire values have been assigned by international agreement.4 PrincipleAir is passed through a test specimen consisting of a plug of fibres. The permeability is indicated on a
20、scale for recording variations in either the rate of flow through, or the pressure difference across, the plug. The mass and volume of the test specimen are either a constant for a given type of instrument or varied appropriately in relation to each other. The scale indicating variations in permeabi
21、lity can be calibrated in arbitrary units of micronaire value or marked in the appropriate absolute units of rate of flow or of pressure difference and a table or graph provided for conversion of the observed readings into micronaire values.5 Apparatus and materials5.1 Balance of sufficient capacity
22、 to weigh the test specimen required for the airflow instrument used, with an accuracy of 0,2 %.5.2 Airflow instrument, whose principal parts are:5.2.1 Compression cylinder with perforated ends of such dimensions that with the prescribed mass of specimen each cubic centimetre shall contain between 0
23、,16 g and 0,30 g of cotton when compressed.5.2.2 Means for measuring the air permeability of the specimen, comprising, for example: ISO 2014 All rights reserved 1BS ISO 2403:2014ISO 2403:2014(E)a) a suitable air pump;b) one or more valves or other means for controlling the flow of air through, or th
24、e pressure difference across, the specimen in the compression cylinder;c) a manometer for measuring the required air pressure difference across the specimen and a flowmeter for indicating the rate of airflow through it.NOTE Details of certain commercially available instruments which comply with this
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