DIN EN ISO 17751-1-2016 Textiles - Quantitative analysis of cashmere wool other specialty animal fibers and their blends - Part 1 Light microscopy method (ISO 17751-1 2016) German .pdf

1、November 2016 English price group 20No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 59.060.10!%YI“2585438www.din.de

2、DIN EN ISO 17751-1Textiles Quantitative analysis of cashmere, wool, other specialty animal fibers and their blends Part 1: Light microscopy method (ISO 177511:2016);English version EN ISO 177511:2016,English translation of DIN EN ISO 17751-1:2016-11Textilien Quantitative Analyse von Kaschmir, Wolle,

3、 anderen speziellen tierischen Fasern und deren Mischungen Teil 1: LichtmikroskopieVerfahren (ISO 177511:2016);Englische Fassung EN ISO 177511:2016,Englische bersetzung von DIN EN ISO 17751-1:2016-11Textiles Analyse quantitative du cachemire, de la laine, dautres fibres animales spciales et leurs ml

4、anges Partie 1: Mthode de microscopie optique (ISO 177511:2016);Version anglaise EN ISO 177511:2016,Traduction anglaise de DIN EN ISO 17751-1:2016-11www.beuth.deDocument comprises 48 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritat

5、ive.10.16 DIN EN ISO 17751-1:2016-11 2 A comma is used as the decimal marker. National foreword This document (EN ISO 17751-1:2016) has been prepared by Technical Committee ISO/TC 38 “Textiles” in collaboration with Technical Committee CEN/TC 248 “Textiles and textile products” (Secretariat: BSI, Un

6、ited Kingdom). The responsible German body involved in its preparation was DIN-Normenausschuss Materialprfung (DIN Standards Committee Materials Testing), Working Committee NA 062-05-21 AA Physikalisch-technologische Prfverfahren fr Textilien. The DIN Standards corresponding to the International Sta

7、ndards referred to in this document are as follows: ISO 137 DIN EN ISO 137 ISO 139 DIN EN ISO 139 ISO 5725-2:1994 DIN ISO 5725-2:2002-12 National Annex NA (informative) Bibliography DIN EN ISO 137, Wool Determination of fibre diameter Projection microscope method DIN EN ISO 139, Textiles Standard at

8、mospheres for conditioning and testing DIN ISO 5725-2:2002-12, Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method (ISO 5725-2:1994 including Technical Corrigendum 1:2002

9、) EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 17751-1 April 2016 ICS 59.060.10 English Version Textiles - Quantitative analysis of cashmere, wool, other specialty animal fibers and their blends - Part 1: Light microscopy method (ISO 17751-1:2016) Textiles - Analyse quantitative du cache

10、mire, de la laine, dautres fibres animales spciales et leurs mlanges - Partie 1: Mthode de microscopie optique (ISO 17751-1:2016) Textilien - Quantitative Analyse von Kaschmir, Wolle, anderen speziellen tierischen Fasern und deren Mischungen - Teil 1: Lichtmikroskopie-Verfahren(ISO17751-1:2016) This

11、 European Standard was approved by CEN on 13 December 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical refere

12、nces concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN

13、member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,

14、 France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHE

15、S KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 17751-1:2016 EEuropean foreword .3Introduction 51 Scope . 62 Normative references 63 Ter

16、ms and definitions . 64 Principle 75 Apparatus, materials, and reagents 75.1 Apparatus 75.2 Materials . 75.3 Reagents 86 Drawing of laboratory sample and conditioning 87 Preparation of the test specimens . 87.1 Number of test specimens . 87.2 Preparation of the test specimens 87.2.1 Loose fibre . 87

17、.2.2 Sliver . 87.2.3 Yarn 87.2.4 Woven fabrics . 97.2.5 Knitted fabrics 97.3 Decolouring of the laboratory sample 98 Test procedure 98.1 Settings of magnification with micrometer scale 98.2 Fibre identification and fibre diameter measurement . 99 Calculation of test result 11Annex A (informative) Dr

18、awing of the lot sample and the laboratory sample 13Annex B (informative) Decolouration 14Annex C (informative) Surface morphology of common animal fibres .15Annex D (normative) Density of common animal fibres 45Bibliography .46Contents PageDIN EN ISO 17751-1:2016-11 EN ISO 17751-1:2016 (E) 2Forewor

19、d .4European foreword This document (EN ISO 17751-1:2016) has been prepared by Technical Committee ISO/TC 38 “Textiles“ in collaboration with Technical Committee CEN/TC 248 “Textiles and textile products” the secretariat of which is held by BSI. This European Standard shall be given the status of a

20、national standard, either by publication of an identical text or by endorsement, at the latest by October 2016, and conflicting national standards shall be withdrawn at the latest by October 2016. Attention is drawn to the possibility that some of the elements of this document may be the subject of

21、patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,

22、 Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey

23、and the United Kingdom. Endorsement notice The text of ISO 17751-1:2016 has been approved by CEN as EN ISO 17751-1:2016 without any modification. DIN EN ISO 17751-1:2016-11 EN ISO 17751-1:2016 (E) 3 ForewordISO (the International Organization for Standardization) is a worldwide federation of nationa

24、l 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 established has the right to be represented on that committee. Internation

25、al 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.The procedures used to develop this document and those intended f

26、or 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 editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.o

27、rg/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 rights identified during the development of the document will be

28、 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 explanation on the meaning of ISO specific terms and expressions

29、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 document is ISO/TC 38, Textiles.ISO 17751 consists of the followi

30、ng parts, under the general title Textiles Quantitative analysis of cashmere, wool, other speciality animal fibres and their blends: Part 1: Light microscopy method Part 2: Scanning electron microscopy methodDIN EN ISO 17751-1:2016-11 EN ISO 17751-1:2016 (E) 4 IntroductionCashmere is a high-value sp

31、ecialty animal fibre, but cashmere and other animal wool fibres such as sheeps wool, yak, camel, etc. exhibit great similarities in their physical and chemical properties, so that their blends are difficult to distinguish from each other by both mechanical and chemical methods. In addition, these fi

32、bres show similar scale structures. It is very difficult to accurately determine the fibre content of such fibre blends by current testing means.Research on the accurate identification of cashmere fibres has been a long undertaking. At present, the most widely used and reliable identification techni

33、ques include the light microscopy (LM) method and the scanning electron microscopy (SEM). The SEM method shows complementary characteristics to those of LM method. The advantage of the LM method is that the internal medullation and pigmentation of fibres can be observed; the disadvantage is that som

34、e subtle surface structures cannot be clearly displayed. A decolouring process needs to be carried out on dark samples for testing. An improper decolouring process can affect the judgment of the fibre analyst. The SEM method shows opposite characteristics to those of LM method so some types of fibre

35、s need to be identified by scanning electron microscope. The LM and SEM methods need be used together to identify some difficult-to-identify samples in order to utilize the advantages of both methods.It has been proven in practice that the accuracy of a fibre analysis is highly related to the ample

36、experience, full understanding, and extreme familiarity of the fibre analyst to the surface morphology of various types of animal fibres so besides the textual descriptions, several micrographs of different types of animal fibres are given in Annex C.DIN EN ISO 17751-1:2016-11 EN ISO 17751-1:2016 (E

37、) 5 1 ScopeThis part of ISO 17751 specifies a method for the identification, qualitative, and quantitative analysis of cashmere, wool, other speciality animal fibres, and their blends using light microscopy (LM).This part of ISO 17751 is applicable to loose fibres, intermediate-products, and final p

38、roducts of cashmere, wool, other speciality animal fibres, and their blends.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated ref

39、erences, the latest edition of the referenced document (including any amendments) applies.ISO 139, Textiles Standard atmospheres for conditioning and testing3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1specialty animal fibreany type of kerati

40、n fibre taken from animals (hairs) other than sheep3.2light microscopeoptical instrument used to produce magnified images utilizing visible light sourceNote 1 to entry: Types of microscopes suitable for fibre identification include projection microscopes and visual microscopic image analysers. Trans

41、mittedlight type microscopes with direct graduated scale equipped on optical lens are also applicable.3.3scalecuticle covering the surface of animal fibres3.4scale frequencynumber of scales (3.3) along the fibre axis per unit length3.5scale heightheight of the cuticle at the scales (3.3) distal edge

42、DIN EN ISO 17751-1:2016-11 EN ISO 17751-1:2016 (E) 6 3.6fibre surface morphologysum of the physical properties/attributes characterizing the fibre surfaceEXAMPLE The fibre surface morphology includes scale frequency (3.4), scale height (3.5), patterns of scale edge, scale surface smoothness, fibre e

43、venness along its axis, transparency under light microscope (3.2), etc.3.7lot sampleportion representative of the same type and same lot of material drawn according to the requirements from which it is taken3.8laboratory sampleportion drawn from a lot sample (3.7) according to the requirements for p

44、reparing specimens3.9test specimenportion taken from fibre snippets randomly cut from a laboratory sample (3.8) for measurement purposes4 PrincipleA longitudinal view image of fibre snippets representative of a test specimen is magnified to an appropriate scale/size under an optical microscope. All

45、the fibre types found in the test specimen are identified by comparing them with known fibre surface morphologies for different types of animal fibres.For each fibre type, the number and mean diameters of the fibre snippets are counted and measured. The mass fraction is calculated from the data for

46、the number of fibre snippets counted, mean value and standard deviation of the snippet diameter, and the true density of each fibre type.5 Apparatus, materials, and reagents5.1 Apparatus5.1.1 Projection microscope, comprised of a light source, a light condenser, a stage, an objective, an ocular, and

47、 a circular transparent viewing screen or non-transparent projection table with a graduated scale in millimetres. The objective and ocular shall be capable of providing at least a magnification of 500 at the screen.5.1.2 Visual microscopic image analyser, comprised of a microscope, a camera, a compu

48、ter, a data acquisition card, exclusive analysing software, and a display. The objective and ocular of the microscope shall be capable of providing at least a magnification of 500.5.1.3 Transmitted-light type microscope, comprised of a light source, a light condenser, a stage, an objective, and an ocular with a graduated scale. The objective and ocular of this type of microscope shall be capable of providing a magnification of