1、October 2009DEUTSCHE NORM English price group 8No part of this standard 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 59.100.01!$Z)k“1550672w
2、ww.din.deDDIN EN ISO 1889Reinforcement yarns Determination of linear density (ISO 1889:2009)English version of DIN EN ISO 1889:2009-10Verstrkungsgarne Bestimmung der Feinheit (ISO 1889:2009)Englische Fassung DIN EN ISO 1889:2009-10SupersedesDIN EN ISO 1889:1997-08www.beuth.deDocument comprises pages
3、11 2 National oreword This standard has been prepared by Technical Committee ISO/TC 61 “Plastics” (Secretariat: ANSI, USA) in collaboration with Technical Committee CEN/TC 249 “Plastics” (Secretariat: NBN, Belgium). At present a DIN committee does not exist for this standard since the parties concer
4、ned have not shown any interest in work on the subject. The DIN Standards corresponding to the International Standards referred to in clause 2 of the EN ISO are as follows: ISO 291 DIN EN ISO 291 ISO 3344 DIN EN ISO 3344 ISO 10548 DIN EN ISO 10548 Amendments This standard differs from DIN EN ISO 188
5、9:1997-08 as follows: a) The scope has been extended to include all reinforcement-fibre yarns. b) Normative references have been updated. c) The reference to ISO 1886 in Footnote 1 has been deleted as this standard has been withdrawn without replacement. d) The text of the standard has been editoria
6、lly revised. Previous editions DIN EN ISO 1889: 1997-08 National Annex NA (informative) Bibliography DIN EN ISO 291, Plastics Standard atmospheres for conditioning and testing DIN EN ISO 3344, Reinforcement products Determination of moisture content DIN EN ISO 10548, Carbon fibre Determination of si
7、ze content DIN EN ISO 1889:2009-10 fEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 1889July 2009ICS 59.100.01 Supersedes EN ISO 1889:1997 English VersionReinforcement yarns - Determination of linear density Fils de renfort - Dtermination de la masse linique Verstrkungsgarne - Bestimmung der F
8、einheit This European Standard was approved by CEN on 13 June 2009.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical
9、references concerning such nationalstandards may be obtained on application to the CEN 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 translationunder the responsibility of a CEN membe
10、r into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latv
11、ia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: Avenue Marnix 17, B-1000 Brussels 20
12、09 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 1889:2009: E(ISO 1889:2009)(ISO 1889:2009) (ISO 1889:2009)2 Contents Page Foreword .3 1 Scope4 2 Normative references4 3 Terms and definitions .4 4 Principle .4 5 Apparatus.5 5.1
13、 Apparatus for determinations on sized yarn5 5.2 Additional Apparatus for determinations on desized yarn.6 6 Test specimens6 7 Conditioning and test atmosphere 7 8 Procedure.7 8.1 Effect of sizing .7 8.2 Preliminary operations7 8.3 Determination with desized specimen 5 8.4 Determination on a sized s
14、pecimen 8 9 Expression of results9 10 Precision 9 11 Test report9 DIN EN ISO 1889:2009-10 EN ISO 1889:2009 (E) 3 Foreword This document (EN ISO 1889:2009) has been prepared by Technical Committee ISO/TC 61 “Plastics“ in collaboration with Technical Committee CEN/TC 249 “Plastics” the secretariat of
15、which is held by NBN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by January 2010, and conflicting national standards shall be withdrawn at the latest by January 2010. Attention is drawn to the p
16、ossibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 1889:1997. According to the CEN/CENELEC Internal Regulations, the national standa
17、rds organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Por
18、tugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 1889:2009 has been approved by CEN as a EN ISO 1889:2009 without any modification. DIN EN ISO 1889:2009-10 EN ISO 1889:2009 (E) 1 Scope This International Standard specifies a me
19、thod for the determination of the linear density of glass-fibre, carbon-fibre, aramid-fibre and any other reinforcement-fibre yarns. It is applicable to all types of yarn, including single yarns, double and cabled yarns, textured yarns, rovings and staple-fibre yarns. 2 Normative references The foll
20、owing referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 291, Plastics Standard atmospheres for conditioning a
21、nd testing ISO 1887, Textile glass Determination of combustible-matter content ISO 3344, Reinforcement products Determination of moisture content ISO 10548:2002, Carbon fibre Determination of size content 3 Terms and definitions For the purposes of this document, the following terms and definitions
22、apply. 3.1 linear density of a yarn mass per unit length of the yarn, with or without size NOTE The unit generally used is the tex, which corresponds to 1 g per kilometre of yarn. 4 Principle A yarn test specimen of known length, with or without size, is weighed and the mass per unit length calculat
23、ed. In the case where the yarn must be desized, this is done by extraction and drying (in the case of aramid fibre), by calcination (in the case of glass fibre) or by extraction or pyrolysis (in the case of carbon fibre). In the case of carbon-fibre yarns, the linear density of the desized yarn may
24、also be calculated from the linear density of the sized yarn and the size content determined in accordance with ISO 10548. However, the result obtained in this way will include a small error due to the inherent error involved in determining the size content. 4DIN EN ISO 1889:2009-10 EN ISO 1889:2009
25、 (E) 5 Apparatus 5.1 Apparatus for determinations on sized yarn 5.1.1 Spool, preferably with a circumference of 1 m. The spool is generally fitted with a traversing system to wind the yarn in thin layers. It may also include a tensioning system to tension the yarn while a test specimen is being take
26、n. The spool shall be calibrated in such a way that, for all specimen lengths, the actual length obtained is accurate to 0,3 %. The calibration of the spool shall take into consideration the required specimen length, the type of yarn and the type of material. This calibration shall be carried out wi
27、th a particular tension in the yarn, and the operator shall be made aware of this tension. For specimens 0,25 g5 2 1 Aramid Length such that the mass is between 3 g and 10 g The product specification or the person requesting the determination may stipulate that the determination be performed on a (s
28、pecified) higher number of specimens which are generally taken from adjacent positions in the elementary unit or laboratory sample. Moreover, it may be stipulated that the determination be repeated at different places within the elementary unit or laboratory sample. 1) The elementary unit is the sma
29、llest normally commercially available entity of a given product. 2) A laboratory sample is a part of the elementary unit from which the specimen(s) will be selected for the test. A laboratory sample is taken when it is impractical to bring the elementary unit into the test laboratory. 6DIN EN ISO 18
30、89:2009-10 EN ISO 1889:2009 (E) 7 Conditioning and test atmosphere If the determination is to be carried out on a desized specimen, conditioning is not necessary. In other cases, ensure that the elementary units or laboratory samples to be examined are at a temperature defined in ISO 291 before begi
31、nning the test. Carry out the determination itself in a standard atmosphere as defined in ISO 291. For aramid yarns, use the atmosphere at (20 2) C and (65 5) % relative humidity. 8 Procedure 8.1 Effect of sizing NOTE In the designation of a yarn, the linear density is generally that of the dry, des
32、ized yarn. However, linear density may be measured with or without size. Therefore, it is important to verify on which basis the yarn specification is written so as to provide clear instructions to the operator for the test procedure. On the other hand, glass and carbon-fibre yarns contain a very sm
33、all amount of moisture. If the amount does not exceed 0,2 %, measured in accordance with ISO 3344, the determination may be made on the undried, sized yarn. 8.2 Preliminary operations Using the spool (or alternative equipment as specified in 5.1.1), take the specimen in accordance with the instructi
34、ons in Clause 6 from a yarn which shows no visible signs of damage. For yarn from a package, it is recommended that the outer layers, which may be partially damaged, be first removed. Remove the specimen from the spool and fold it so that it can be placed on the balance (5.1.4) or in the weighing bo
35、ttle (5.1.6) without difficulty. 8.3 Determination with desized specimen 8.3.1 General If a specimen holder (5.1.2) or weighing bottle is used to weigh the specimen, stabilize its mass by bringing it to the temperature used to dry the specimen. Allow it to cool in the desiccator (5.1.7) until it rea
36、ches room temperature. Then proceed as described in 8.3.2, 8.3.3 or 8.3.4, depending on the type of yarn being examined. Take care to avoid any loss of material whenever handling the specimen. 8.3.2 Glass yarns or rovings Lay the specimen flat on a suitable support, and place the support in the muff
37、le furnace (5.2.1) set at (625 20) C. Calcinate for ()10020+min, taking care that the specimen does not touch the muffle. Allow the specimen to cool in the desiccator. Weigh the specimen to the nearest 1 mg. 7DIN EN ISO 1889:2009-10 EN ISO 1889:2009 (E) 8.3.3 Carbon yarns 8.3.3.1 Extraction method (
38、ISO 10548:2002, method A) Extract for 2 h using a Soxhlet extractor and a solvent such as methylethylketone, tetrahydrofuran, acetone, dichloromethane or dichloroethane. Dry at (105 3) C for ()10090+min. Allow the specimen to cool in the desiccator. Weigh the specimen to the nearest 1 mg. 8.3.3.2 Py
39、rolysis method (ISO 10548:2002, method C) Pyrolyse in an oven at (450 5) C in a stream of nitrogen for ( )10015+min. Allow to cool in the desiccator. Weigh the specimen to the nearest 1 mg. 8.3.4 Aramid yarns Extract for 4 h using a Soxhlet extractor and a solvent such as dichloromethane. Dry at (10
40、5 3) C for ()10030+min. Allow to cool in the desiccator. Weigh the specimen to the nearest 1 mg. 8.4 Determination on a sized specimen The procedure described provides for the drying of glass-fibre or carbon-fibre specimens if the product specification requires it (see the Note in 8.1). For aramid-f
41、ibre yarns, drying is not required. If the moisture content at the point where the specimen is taken is less than 0,2 %, proceed directly to weighing the specimen taken in 8.2. If it is necessary to dry the specimen for the determination, place the specimen in the oven (5.1.3) at (105 3) C for ()100
42、60+min, subsequently allowing it to cool in the desiccator until it reaches room temperature. Weigh the specimen to the nearest 1 mg. Take care to avoid any loss of material whenever handling the specimen. If a specimen holder or weighing bottle is used to weigh the specimen, allow its mass to stabi
43、lize at the oven temperature and then leave to cool in the desiccator until ambient temperature is reached. Then proceed to drying the specimen. 8DIN EN ISO 1889:2009-10 EN ISO 1889:2009 (E) 9 Expression of results 9.1 If weighing was carried out with a specimen holder or weighing bottle, deduct its
44、 mass in order to obtain the mass of the specimen. 9.2 Calculate the linear density Tt, in grams per kilometre, using the equation 1000TtmL= where m is the mass, in grams, of the specimen; L is the length, in metres, of the specimen. If more than one specimen was taken for the determination (see Cla
45、use 6), the results obtained for the various specimens in each determination shall be dealt with in accordance with the referring specification or as specified by the person ordering the determination. 10 Precision The precision of this test method is not known because interlaboratory data are not a
46、vailable. 11 Test report The test report shall include the following information: a) a reference to this International Standard; b) all details necessary for identification of the yarn examined; c) the specimen length and the number of specimens examined per elementary unit, together with details of
47、 their locations; d) details of the method, e.g.: 1) desized specimen, 2) dried sized specimen, 3) as-received sized specimen; e) the individual result of each determination and, depending on the case, the result for each specimen; f) details of any operation not specified in this International Standard, as well as of any incident liable to have had an effect on the results; g) the date of the test. 9DIN EN ISO 1889:2009-10 EN ISO 1889:2009 (E)
