BS EN 60811-605-2012 Electric and optical fibre cables Test methods for non-metallic materials Physical tests Measurement of carbon black and or mineral filler in polyethylene comp.pdf

1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationElectric and optical fibre cables Test methods for non-metallic materialsPart 605: Physical tests Measurement of carbon black and/or mineral filler in polyethylene compoundsBS EN

2、 60811-605:2012National forewordThis British Standard is the UK implementation of EN 60811-605:2012. It isidentical to IEC 60811-605:2012. In the UK, the relationship between the supersessions of BS EN 60811 seriescan be summarized as follows.Superseded standards are withdrawnThe UK participation in

3、 its preparation was entrusted by Technical CommitteeGEL/20, Electric cables, to Subcommittee GEL/20/17, Electric Cables - Lowvoltage.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provis

4、ions of acontract. Users are responsible for its correct application. The British Standards Institution 2012Published by BSI Standards Limited 2012ISBN 978 0 580 65342 1ICS 29.035.01; 29.060.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was p

5、ublished under the authority of the StandardsPolicy and Strategy Committee on 31 July 2012.Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN 60811-605:2012BS EN 60811-100 together with Supersedes - -201, -202, -203, -501 BS EN 60811-1-1:1995 -301, -302, -411, -601,

6、-602, -603, -604 BS EN 60811-5-1:2000 -401, -412 BS EN 60811-1-2:1995 -402, -502, -503, -606 BS EN 60811-1-3:1995 -403, -404, -507 BS EN 60811-2-1:1998 -405, -409 BS EN 60811-3-2:1995 -406, -511, -605, -607 BS EN 60811-4-1:2004 -407, -408, -410, -510, -512, -513 BS EN 60811-4-2:2004 -504, -505, -506

7、 BS EN 60811-1-4:1995 -508, -509 BS EN 60811-3-1:1995EUROPEAN STANDARD EN 60811-605 NORME EUROPENNE EUROPISCHE NORM June 2012 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Ce

8、ntre: Avenue Marnix 17, B - 1000 Brussels 2012 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60811-605:2012 E ICS 29.035.01; 29.060.20 Supersedes EN 60811-4-1:2004 (partially)English version Electric and optical fibre cables - T

9、est methods for non-metallic materials - Part 605 : Physical tests - Measurement of carbon black and/or mineral filler in polyethylene compounds (IEC 60811-605:2012) Cbles lectriques et fibres optiques - Mthodes dessai pour les matriaux non-mtalliques - Partie 605: Essais physiques - Mesure du taux

10、de noir de carbone et/ou des charges minrales dans les mlanges en polythylne (CEI 60811-605:2012) Kabel, isolierte Leitungen und Glasfaserkabel - Prfverfahren fr nichtmetallene Werkstoffe - Teil 605: Physikalische Prfungen - Messung des Ru- und/oder Fllstoffgehalts in Polyethylenmischungen (IEC 6081

11、1-605:2012) This European Standard was approved by CENELEC on 2012-04-17. CENELEC 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 CEN-CENELEC Management Centre or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the re

13、sponsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Fi

14、nland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. EN 60811-605:2012 - 2 - Foreword The text of document 20/1314/FDI

15、S, future edition 1 of IEC 60811-605, prepared by IEC/TC 20 “Electric cables“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 60811-605:2012. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of an ide

16、ntical national standard or by endorsement (dop) 2013-01-17 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2015-04-17 This document supersedes Clauses 11 and 12 of EN 60811-4-1:2004 (partially). Full details of the replacements are shown in Annex

17、 A of EN 60811-100:2012. There are no technical changes with respect to EN 60811-4-1:2004, but see the Foreword to EN 60811-100:2012. This standard is to be read in conjunction with EN 60811-100. Attention is drawn to the possibility that some of the elements of this document may be the subject of p

18、atent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. This standard covers the Principle Elements of the Safety Objectives for Electrical Equipment Designed for Use within Certain Voltage Limits (LVD - 2006/95/EC) Endorsement notice The text of

19、 the International Standard IEC 60811-605:2012 was approved by CENELEC as a European Standard without any modification. BS EN 60811-605:2012- 3 - EN 60811-605:2012 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following doc

20、uments, 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 references, the latest edition of the referenced document (including any amendments) applies. NOTE When an internation

21、al publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60811-100 2012 Electric and optical fibre cables - Test methods for non-metallic materials - Part 100: General EN 60811-100 2012 BS EN 60811-605:2012 2 6081

22、1-605 IEC:2012 CONTENTS INTRODUCTION . 5 1 Scope . 6 2 Normative references . 6 3 Terms and definitions . 6 4 Test method . 6 4.1 General . 6 4.2 Method A Measurement of carbon black and/or mineral filler content in polyethylene by direct combustion . 6 4.2.1 Sample and test piece preparation 6 4.2.

23、2 Test procedure 6 4.2.3 Expression of results . 7 4.3 Method B Thermogravimetric analysis of the carbon black content in polyolefin compounds . 7 4.3.1 Principle 7 4.3.2 Reagents . 8 4.3.3 Apparatus 8 4.3.4 Procedure 8 5 Test report 8 Bibliography 9 BS EN 60811-605:201260811-605 IEC:2012 5 INTRODUC

24、TION The IEC 60811 series specifies the test methods to be used for testing non-metallic materials of all types of cables. These test methods are intended to be referenced in standards for cable construction and for cable materials. NOTE 1 Non-metallic materials are typically used for insulating, sh

25、eathing, bedding, filling or taping within cables. NOTE 2 These test methods are accepted as basic and fundamental and have been developed and used over many years principally for the materials in all energy cables. They have also been widely accepted and used for other cables, in particular optical

26、 fibre cables, communication and control cables and cables for ships and offshore applications. BS EN 60811-605:2012 6 60811-605 IEC:2012 ELECTRIC AND OPTICAL FIBRE CABLES TEST METHODS FOR NON-METALLIC MATERIALS Part 605: Physical tests Measurement of carbon black and/or mineral filler in polyethyle

27、ne compounds 1 Scope This Part 605 of IEC 60811 describes the test methods for measuring the content of carbon black added for UV stabilization of polyethylene and polyolefin compounds. These methods are not suitable for halogenated compounds. Method A is suitable only for polyethylene and polypropy

28、lene compounds. Method B is suitable for polyolefine compounds. 2 Normative references The 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 references, th

29、e latest edition of the referenced document (including any amendments) applies. IEC 60811-100:2012, Electric and optical fibre cables Test methods for non-metallic materials Part 100: General 3 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 60811-100

30、apply. 4 Test method 4.1 General This part of IEC 60811 shall be used in conjunction with IEC 60811-100. Unless otherwise specified, tests shall be carried out at room temperature. 4.2 Method A Measurement of carbon black and/or mineral filler content in polyethylene by direct combustion 4.2.1 Sampl

31、e and test piece preparation A sample of the outer covering or sheath of sufficient weight shall be taken from one end of the cable. The sample shall be cut in pieces, the dimensions of which shall not exceed 5 mm in any direction. 4.2.2 Test procedure A combustion boat about 75 mm long shall be hea

32、ted until it is red hot, allowed to cool in the desiccator for at least 30 min and weighed to the nearest 0,000 1 g. A sample of polyethylene BS EN 60811-605:201260811-605 IEC:2012 7 weighing (1,0 0,1) g shall be placed in the boat and the whole weighed to the nearest 0,000 1 g. The weight of the bo

33、at shall be subtracted to give the weight of the polyethylene to the nearest 0,000 1 g (quantity A). The boat and the sample shall then be placed in the middle of a hard glass, silica or porcelain combustion tube, with a bore approximately of 30 mm, and (400 50) mm in length. A stopper carrying a th

34、ermometer for temperature measurements from 300 C to 650 C and a tube for the admission of nitrogen shall then be inserted into one end of the combustion tube so that the end of the thermometer touches the boat. Nitrogen with an oxygen content of less than 0,5 % shall be passed through the combustio

35、n tube at (1,7 0,3) l/min and this rate of flow shall be maintained during the subsequent heating. In case of doubt, the oxygen content of the nitrogen shall be limited to 0,01 %. The combustion tube shall be placed in a furnace and its outlet connected to two cold traps in series, both containing t

36、richlorethylene, the first being cooled with solid carbon dioxide. The outlet tube from the second trap shall lead to a fume hood or the outside atmosphere. Alternatively, it is permissible for the outlet from the combustion tube to lead directly to the outside atmosphere. The furnace shall then be

37、heated so that the temperature is between 300 C and 350 C after about 10 min; about 450 C after another 10 min and (600 5) C after a third period of 10 min. This temperature shall then be maintained for 10 min, at the end of which the outlet tube shall be disconnected from the cold traps, if these a

38、re used, and the tube containing the boat withdrawn from the furnace and allowed to cool for 5 min, the flow of nitrogen being maintained at the same rate as before. The boat shall then be removed from the combustion tube through the nitrogen inlet end, allowed to cool in the desiccator for 20 min t

39、o 30 min and then re-weighed. The weight of the residue is determined to the nearest 0,000 1 g (quantity B of residue). Subsequently, the boat shall again be introduced into the combustion tube; instead of nitrogen, air or oxygen shall be blown through the tube at an adequate flow rate for a tempera

40、ture of (600 20) C, and the remaining carbon black shall be burnt. After it has cooled in the test assembly, the boat shall be removed and weighed again. The mass of the residue is determined to the nearest 0,000 1 g (quantity C of residue). 4.2.3 Expression of results Carbon black content = %100ACB

41、Mineral filler content = %001ACTotal filler content = %100AB4.3 Method B Thermogravimetric analysis of the carbon black content in polyolefin compounds NOTE This method may be used as an alternative to that in 4.2 when measuring carbon black content of polyethylene. In the event of dispute, the dire

42、ct combustion method in 4.2 should be used as the reference method. 4.3.1 Principle Heat a weighed test specimen in a thermogravimetric analyser, starting at 100 C with 20 K/min up to 950 C. BS EN 60811-605:2012 8 60811-605 IEC:2012 NOTE 1 A starting temperature of 100 C is practical, as the subsequ

43、ent measurements can be carried out earlier because of the shorter cooling time. At first, purge the test specimen with dry nitrogen with an oxygen content as described in 4.3.2. When the temperature of 850 C is reached, switch from dry nitrogen to “synthetic air”. With the switch to air, the combus

44、tion of the carbon black that is present will follow. NOTE 2 Weight loss during the purging stage with nitrogen, up to approximately 800 C, is due to degradation of the polymer and loss of other minor ingredients. 4.3.2 Reagents The following reagents shall be used: dry nitrogen with an oxygen conte

45、nt of less than 10 mg/kg; dry “synthetic air” (a mixture of 80 % nitrogen and 20 % oxygen). 4.3.3 Apparatus The apparatus comprises: a) a thermogravimetric analyser; b) a gas selector; c) a plotter or other suitable device; d) an analytical balance. 4.3.4 Procedure 4.3.4.1 Parameters of the apparatu

46、s a) starting temperature 100 C; b) heating rate 20 K/min; c) end temperature 950 C; d) weighed test specimen 5 mg to 10 mg; e) purging gas up to 850 C dry nitrogen; f) purging gas from 850 C to 950 C dry “synthetic air”. 4.3.4.2 Operation Operate the apparatus according to the manufacturers instruc

47、tions and the parameters given in 4.3.4.1. Cover the bottom of the crucible with the test specimen, which should consist of a sheet which is as thin as possible. Before the start of the heating period, ensure that an oxygen-free atmosphere is obtained by purging with nitrogen as specified in 4.3.2 f

48、or at least 5 min. 4.3.4.3 Evaluation The share of carbon black in the compound is determined for each single test specimen from the weight change during burning in dry “synthetic air” from 850 C to 950 C. The ignition residue at 950 C is, at the same time, the ash content. 5 Test report The test re

49、port shall be in accordance with that given in IEC 60811-100. BS EN 60811-605:201260811-605 IEC:2012 9 Bibliography IEC 60811-4-1:2004, Insulating and sheathing materials of electric and optical cables Common test methods Part 4-1: Methods specific to polyethylene and polypropylene compounds Resistance to environmental stress cracking Measurement of the melt flow index Carbon black and/or mineral filler content measurement in polyethylene b