BS EN 12654-2-1999 Textile glass - Yarns - Methods of test and general specifications《纺织玻璃 纱 试验方法和通用规范》.pdf

1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 12654-2:1999 The Eu

2、ropean Standard EN 12654-2:1998 has the status of a British Standard ICS 59.100.10 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Textile glass Yarns Part 2: Methods of test and general specificationsBS EN 12654-2:1999 This British Standard, having been prepared under the dir

3、ection of the Sector Committee for Materials and Chemicals, was published under the authority of the Standards Committee and comes into effect on 15 April 1999 BSI 04-1999 ISBN 0 580 30951 7 Amendments issued since publication Amd. No. Date Text affected National foreword This British Standard is th

4、e English language version of EN 12654-2:1998. The UK participation in its preparation was entrusted to Technical Committee PRI/42, Fibre reinforced thermosetting plastics and prepregs, which has the responsibility to: aid enquirers to understand the text; present to the responsible European committ

5、ee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-referen

6、ces The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalog

7、ue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document compri

8、ses a front cover, an inside front cover, the EN title page, pages 2 to 6, an inside back cover and a back cover.CEN European Committee for Standardization Comite Europe en de Normalisation Europa isches Komitee fu r Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1998 CEN All right

9、s of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12654-2:1998 E EUROPEAN STANDARD EN 12654-2 NORME EUROPE ENNE EUROPA ISCHE NORM November 1998 ICS 59.100.10 Descriptors: textile glass, textile glass yarns, specifications, physical properties, vi

10、sual examination, appearance, defects, sampling, storage, packing, acceptability English version Textile glass Yarns Part 2: Methods of test and general specifications Verre textile Fils Partie 2: Me thodes dessais et spe cifications ge ne rales Textilglas Garne Teil 2: Pru fverfahren und allgemeine

11、 Anforderungen This European Standard was approved by CEN on 30 October 1998. 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 bibl

12、iographical references concerning such national standards may be obtained on application to the Central Secretariat 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 o

13、f a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, N

14、orway, Portugal, Spain, Sweden, Switzerland and United Kingdom.Page 2 EN 12654-2:1998 BSI 04-1999 Foreword This European Standard has been prepared by Technical Committee CEN/TC 249, Plastics, the Secretariat of which is held by IBN. This European Standard shall be given the status of a national sta

15、ndard, either by publication of an identical text or by endorsement, at the latest by May 1999, and conflicting national standards shall be withdrawn at the latest by May 1999. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are boun

16、d to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Lis

17、t of properties 3 3.1 Physical properties 3 3.2 Visual properties 3 4 General requirements 4 4.1 Connecting tail 4 4.2 Packaging 4 4.3 Storage 4 5 Sampling and the criteria for the acceptance of a lot 4 Annex A (normative) Sampling plan: Method by attributes 5 A.1 Normal control 5 A.2 Control with r

18、educed severity 5 Annex B (informative) Bibliography 6Page 3 EN 12654-2:1998 BSI 04-1999 Introduction This European Standard is one part of EN 12654 which is structured as follows: EN 12654, Textile glass Yarns. Part 1: Designation; Part 2: Method of test and general specification; Part 3: General r

19、equirements for general applications. 1 Scope This European Standard provides the list of properties and the general requirements for yarns based on continuous filament textile glass (single yarns, folded yarns) and excludes textured yarns and yarns based on staple fibre, rovings and pre-impregnated

20、 yarns. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to o

21、r revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN ISO 1886, Reinforcement fibres Sampling plans applicable to received batches. ISO 1886:

22、1990 EN ISO 1889, Reinforcement yarns Determination of linear density. ISO 1889:1997 EN ISO 1890, Reinforcement yarns Determination of twist. ISO 1890:1997 EN ISO 3344, Reinforcement products Determination of moisture content. ISO 3344:1997 ISO 1887, Textile glass Determination of the combustible ma

23、tter content. ISO 1888, Textile glass Staple fibres or filaments Determination of average diameter. ISO 2859-1, Sampling procedures for inspection by attributes Part 1: Sampling plans indexed by acceptable quality level (AQL) for lot-by-lot inspection. ISO 3341, Textile glass Yarns Determination of

24、breaking force and breaking elongation. ISO 3343, Textile glass Yarns Determination of twist balance index. ISO 3951, Sampling procedures and charts for inspection by variables for percent non conforming. 3 List of properties The list of properties with the applicable test method shall be considered

25、 as a guide for the selection of the properties and limits which will be applicable to the yarn families in EN 12654-3. 3.1 Physical properties Table 1 Physical Properties Properties Test methods Remarks Filament diameter (mm) ISO 1888 Linear density (tex) EN ISO 1889 By default: one specimen per bo

26、bbin Combustible material (size content) (%) ISO 1887 Away from outer migration zones 1) Twist (TPM) EN ISO 1890 By default: one determination per bobbin Moisture content (%) EN ISO 3344 Test to be made in centre of the bobbins Breaking force (N) or Tenacity (cN/tex) ISO 3341 1) Unless particularly

27、stated in the manufacturers specification, the test specimens for this test should be taken from between the first and last 500 g of the bobbin. 3.2 Visual properties Each bobbin containing one of the following faults will be considered as non-conforming. 3.2.1 Visible faults in the yarn 3.2.1.1 Yar

28、n which is hairy (if more than 100 broken filaments observed on the complete exterior surface of the package. Limits other than 100 broken filaments may be specified for some specific yarns. 3.2.1.2 Dirty yarn. 3.2.1.3 Slubs or fuzz balls. 3.2.1.4 Cut or partially cut yarn. 3.2.1.5 Faulty gluing (fa

29、ulty splices): where splices are permitted. EXAMPLES Dirty splice, incomplete (ends not bonded), uneven glue, too long. 3.2.1.6 Incorrect number of ends. 3.2.1.7 Uneven doubling (loops created by a difference in length between two or more yarns wound together). 3.2.2 Visible faults in the wound pack

30、age 3.2.2.1 Shiny yarn (lack of size). 3.2.2.2 Sloughed yarn. 3.2.2.3 Flared package (bulging package): if it goes beyond the outer limit of the flange of the bobbin.Page 4 EN 12654-2:1998 BSI 04-1999 3.2.2.4 Undercut package: i.e. more than a 5 mm distance between the vertical side of the bobbin an

31、d the deepest recess form this line. 3.2.2.5 Loops (within the body of the wound package). 3.2.2.6 Loops at the bottom of the wound package. 3.2.2.7 Damaged supports (tubes or bobbin, cut, bruised or broken). 3.2.2.8 Cracked or partially separated wound package. 3.2.2.9 Loose yarn or waste yarn. 3.2

32、.2.10 Foreign matter wound into the package. 3.2.2.11 Protruding yarn (generally, either a bad joint or a bad start to winding). 3.2.2.12 Entrapped end (wedged yarn). 3.2.2.13 Overfilled package (support too full). 3.2.2.14 Package too soft. 3.2.2.15 Package too hard. 3.2.2.16 Defective of dirty con

33、necting (or transfer) tail. 3.2.2.17 Stains. 3.2.2.18 Badly built package. 3.2.2.19 Loops emerging from the flanges, from the cross-overs or windings on the end faces (without flanges). 3.2.2.20 Incorrect or missing identification. 3.2.2.21 Damaged package (frayed package, deformation, knock having

34、taken place during handling after manufacture). 3.2.2.22 Slubs, fuzz balls. 4 General requirements 4.1 Connecting tail Textile yarn may be made with or without a connecting (or transfer) tail. In the case where the connecting tails are intended, the maximum proportion of bobbins without connecting t

35、ails or broken connecting tails may not exceed 10 %. 4.2 Packaging Each bobbin must be identified on the basis of the complete yarn designation using the code number of the size and by all other necessary means in order to avoid mixing the product. Each packaging unit (carton or pallet) must be iden

36、tified legibly with the following information: designation of the product (which comprises the code numbers of the size and of the wound package; net weight of the packaging unit; name of the manufacturer; date of manufacture (in clear or year + week number or year + day number) The type of packagin

37、g used must ensure the appropriate protection of the wound packages during storage and transport without risk of damage or contamination. To this end it must take account of the humidity and temperature conditions and also the handling to which it will be subjected during transport, in intermediate

38、storage depots and at the customers. The manufacturer must specify if the pallets may be stacked and if so, to what height. 4.3 Storage Textile glass yarns must be stored under cover. Avoid exposure to direct sunlight or to a heat source or to all forms of exterior pressure. The glass yarns retain t

39、heir properties for a long time when stored at a temperature between 158C and 308C and a relative humidity of 50 % to 70 %. Other specific recommendations may be defined by the manufacturer. 5 Sampling and the criteria for the acceptance of a lot The evaluation of a lot of textile glass yarn is base

40、d on the sampling that is described in the standard EN ISO 1886 or ISO 2859-1. Except otherwise specified in Part 3 of this European Standard, this evaluation takes into consideration the acceptable quality level (AQL) of 1,5 % for the physical properties and 2,5 % for the visual properties. Other q

41、uality levels can be established for special applications. Depending on the circumstances, the control for the evaluation of a lot, may be either with a “normal” inspection level (for the qualification of a product or in the case of problems), or with a “reduced” inspection level, when a minimum of

42、three successive controls have given an acceptable result. The control must return to the “normal” level if the result on a reduced inspection level is negative. In the context of this standard, the sampling by ATTRIBUTES is proposed. It is also possible to use control by variables. In which case, E

43、N ISO 1886 or ISO 3951 should be consulted. Annex A includes two tables, one for normal control (EN ISO 1886) and the other for a type of reduced control (simple or double sampling) (ISO 2859-1), both of them with sampling by ATTRIBUTES. The acceptance of a lot must be judged for each property indiv

44、idually against its own AQL. The non-conformities are not cumulative between the different properties. Separate from the decision on the allowable level of observed defects for each property, the lot will be accepted providing the average obtained for each property in the group of elementary units c

45、ontrolled, conforms to the limits given in Table 1. For each type of test, reference should be made to the relevant standard for the type of conditioning required for the tests on the elementary units that are to be controlled.Page 5 EN 12654-2:1998 BSI 04-1999 Annex A (normative) Sampling plan: met

46、hod by attributes A.1 Normal control Table A.1 Normal control Number of elementary units in a lot No. of units taken Criterion of acceptance Quality confidence limit for pa = 10 % N Letter n AQL = 1,5 AQL = 2,5 For AQL of For AQL of Code Acc. Rej. Acc. Rej. 1,5 % 2,5 % 2 t o 8A20101 9t o1 5 B 3 0 1

47、0 1 16 to 25 C 5 0 1 0 1 37 26 to 50 D 8 0 1 0 1 25 51 to 90 E 13 0 1 1 2 91 to 150 F 20 1 2 1 2 18 151 to 280 G 32 1 2 2 3 12 16 281 to 500 H 50 2 3 3 4 10 13 501 to 1 200 J 80 3 4 5 6 8,2 11 1 201 to 3 200 K 125 5 6 7 8 7,4 9,4 3 201 to 10 000 L 200 7 8 10 11 5,9 7,7 NOTE 1 Acc.: the lot is accept

48、ed if the number of non-conforming is# this number. Rej.: the lot is rejected if the number of non-conforming is$ this number. NOTE 2 The values given in the column “Quality confidence limit” corresponds to the maximum percentage defective likely to be accepted in 10 % of the cases (one lot in 10) f

49、or a type of product characterized by an AQL of 1,5 % or 2,5 %. Note that the table does not give the values for every line in the sampling plans (the uncertainties increase too much above this level). The percentage may be found in the tables of ISO 2859-1 for the levels of probability other than 10 %. (Refer to the efficiency curves given in ISO 2859-1 for the different sampling plans). A.2 Control with reduced severity Table A.2 Control with reduced severity