1、 IEC 60811-406 Edition 1.0 2012-03 INTERNATIONAL STANDARD NORME INTERNATIONALE Electric and optical fibre cables Test methods for non-metallic materials Part 406: Miscellaneous tests Resistance to stress cracking of polyethylene and polypropylene compounds Cbles lectriques et fibres optiques Mthodes
2、 dessai pour les matriaux non-mtalliques Partie 406: Essais divers Rsistance des mlanges polythylne et polypropylne aux craquelures IEC60811-406:2012 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2012 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publi
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16、s commentaires sur cette publication ou si vous avez des questions contactez-nous: csciec.ch. IEC 60811-406 Edition 1.0 2012-03 INTERNATIONAL STANDARD NORME INTERNATIONALE Electric and optical fibre cables Test methods for non-metallic materials Part 406: Miscellaneous tests Resistance to stress cra
17、cking of polyethylene and polypropylene compounds Cbles lectriques et fibres optiques Mthodes dessai pour les matriaux non-mtalliques Partie 406: Essais divers Rsistance des mlanges polythylne et polypropylne aux craquelures INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTER
18、NATIONALE P ICS 29.035.01; 29.060.20 PRICE CODE CODE PRIX ISBN 978-2-88912-966-9 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this publication from an authorized distributor. A
19、ttention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. 2 60811-406 IEC:2012 CONTENTS FOREWORD . 3 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 . 7 4.2.1 Reagent. 7 4.2.2 App
20、aratus 7 4.2.3 Test pieces preparation . 8 4.2.4 Test procedure 8 4.2.5 Evaluation of results 8 4.3 Method B . 9 4.3.1 Reagent. 9 4.3.2 Apparatus 9 4.3.3 Test pieces preparation . 9 4.3.4 Test procedure 9 4.3.5 Evaluation of results 9 5 Test report 9 Annex A (normative) Test sheet preparation 13 Ann
21、ex B (informative) Tools and reagents 15 Bibliography 16 Figure 1 Notching device . 10 Figure 2 Blade . 10 Figure 3 Bend clamp assembly 11 Figure 4 Transfer tool assembly . 11 Figure 5 Brass channel test piece holder . 11 Figure 6 Test tube with inserted brassw channel test piece holder as in 4.2.2
22、h), containing ten test pieces . 12 Figure 7 Notched test pieces . 12 Table 1 Summary of test conditions and requirements . 7 Table 2 Notched test pieces size according to polyethylene density . 8 60811-406 IEC:2012 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ ELECTRIC AND OPTICAL FIBRE CABLES TEST
23、 METHODS FOR NON-METALLIC MATERIALS Part 406: Miscellaneous tests Resistance to stress cracking of polyethylene and polypropylene compounds FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committ
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32、ther damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication
33、. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such pat
34、ent rights. International Standard IEC 60811-406 has been prepared by IEC technical committee 20: Electric cables. This Part 406 of IEC 60811 cancels and replaces Clause 8 of IEC 60811-4-1:2004, which is withdrawn. Full details of the replacements are shown in Annex A of IEC 60811-100:2012. There ar
35、e no specific technical changes with respect to the previous edition, but see the Foreword to IEC 60811-100:2012. 4 60811-406 IEC:2012 The text of this standard is based on the following documents: FDIS Report on voting 20/1290/FDIS 20/1339/RVD Full information on the voting for the approval of this
36、 standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. This part of IEC 60811 shall be used in conjunction with IEC 60811-100. A list of all the parts in the IEC 60811 series, published under t
37、he general title Electric and optical fibre cables Test methods for non-metallic materials, can be found on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in t
38、he data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. 60811-406 IEC:2012 5 INTRODUCTION The IEC 60811 series specifies the test methods to be used for testing non-metallic materials of all types of cables
39、. 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, sheathing, bedding, filling or taping within cables. NOTE 2 These test methods are accepted as basic and fundamental and ha
40、ve 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 fibre cables, communication and control cables and cables for ships and offshore applications. 6 60811-406 IEC:2012 ELEC
41、TRIC AND OPTICAL FIBRE CABLES TEST METHODS FOR NON-METALLIC MATERIALS Part 406: Miscellaneous tests Resistance to stress cracking of polyethylene and polypropylene compounds 1 Scope This Part 406 of IEC 60811 gives the procedure for evaluating the resistance to stress cracking of polyethylene and po
42、lypropylene compounds which are typically used for communication and optical fibre cables. 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.
43、 For undated references, the 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 definiti
44、ons given in IEC 60811-100 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. Two test procedures can be applied to materials, depending on cable system conditions and en
45、vironments; a summary of test conditions is given in Table 1: for less severe conditions: Method A; for more severe conditions: Method B. These test procedures apply only to the original granules used as sheathing materials. 60811-406 IEC:2012 7 Table 1 Summary of test conditions and requirements Co
46、nditions and/or requirements Method A Method B Preparation of the test sheets: Temperature C Force kN Time min 165 to 170 50 to 200 2 Conditioning of test sheets: Temperature range C Cooling rate K/h See a5 2 Test conditions: Reagent b Concentration % 100 10 Temperature C 50,0 0,5 Duration (minimum)
47、 h 24 48 Requirements: Failure rate Max. 5 test pieces (F 50) 0 test pieces (F 0) a Starting temperature varies according to polymer type: - (145 2) C for low-density polyethylene; - (155 2) C for medium-density polyethylene; - (165 2) C for high-density polyethylene. Final temperature (29 1) C. b I
48、gepal CO-630 or any other reagent having the same chemical composition. 4.2 Method A 4.2.1 Reagent The reagent is a solution of 100 % Igepal CO-630 (Antarox CO-630) or any other reagent having the same chemical composition (see Notes 1 and 2 below and Annex B). NOTE 1 The reagent should not be used
49、more than once. NOTE 2 In the case of unexpectedly short failure times, the reagent should be checked for water content as small increases in water content beyond the specified maximum of 1 % will cause a significant increase in reagent activity. 4.2.2 Apparatus The apparatus shall comprise the following elements: a) Clean, sharp, u
