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1、 Reference number ISO 2475:1999/Amd.1:2005(E) ISO 2005 INTERNATIONAL STANDARD ISO 2475 Fourth edition 1999-12-01 AMENDMENT 1 2005-10-15 Chloroprene rubber (CR) General- purpose types Evaluation procedure AMENDMENT 1 Caoutchouc chloroprne (CR) Types usage gnral Mthode dvaluation AMENDEMENT 1 Copyrigh
2、t International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/18/2007 19:36:10 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 2475:1999/Amd.1:2005(E) PDF disclaimer This PDF fil
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5、eation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO 2005 All rights reserved. Unl
6、ess otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO
7、copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2005 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NA
8、SA Technical Standards 1/9972545001 Not for Resale, 04/18/2007 19:36:10 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 2475:1999/Amd.1:2005(E) ISO 2005 All rights reserved iii Foreword ISO (the International Organization for Standardization) is a worldwide federation o
9、f national 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. In
10、ternational 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. International Standards are drafted in accordance with
11、the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval
12、 by at least 75 % of the member bodies casting a vote. 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. Amendment 1 to ISO 2475:1999 was prepared by T
13、echnical Committee ISO/TC 45, Rubber and rubber products, Subcommittee SC 3, Raw materials (including latex) for use in the rubber industry. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale,
14、04/18/2007 19:36:10 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/18/2007 19:36:10 MDTNo reproduction or netwo
15、rking permitted without license from IHS -,-,- ISO 2475:1999/Amd.1:2005(E) ISO 2005 All rights reserved 1 Chloroprene rubber (CR) General-purpose types Evaluation procedure AMENDMENT 1 Pages 1 and 2 Update Clause 2 (normative references) as follows: Delete all the years of publication except for tha
16、t of ISO 9298 (in the case of ISO 1795, delete the dash and footnote). Replace ISO 471 by ISO 23529, Rubber General procedures for preparing and conditioning test pieces for physical test methods. Page 4 At the end of the list in 5.2.3, replace ISO 471 by ISO 23529. Page 4, Table 2 Replace the exist
17、ing table (one single formulation) with the following (which contains two alternative formulations): Table 2 Standard test formulations for evaluation of mercaptan-modified chloroprene rubbers a Material Formulation A (parts by mass) Formulation B (parts by mass) Chloroprene rubber (CR), mercaptan-m
18、odified Magnesium oxide b Carbon black c Zinc oxide d MTT 80 in polymeric binder (curative) e Sulfur Di-ortho-tolyl guanidine (DOTG) N-cyclohexyl-2-benzothiazyl sulfenamide (CBS) 100,00 4,00 25,00 5,00 0,45 100,00 4,00 25,00 5,00 1,00 1,00 1,00 Total134,45 137,00 a The CR test formulation contains 3
19、-methylthiazolidinethione-2 (MTT) (in the case of formulation A) or sulfur/DOTG/CBS (in the case of formulation B) instead of ethylene thiourea, a suspected carcinogen. b The surface area of the magnesium oxide shall be between 130 m2/g and 200 m2/g. Magnesium oxide will absorb water and carbon diox
20、ide when exposed to air and this can affect its activity in compounds. Store it in a dry environment. c The current industry reference black (IRB), or an equivalent national or international standard reference material, shall be used. d Class B1a (see ISO 9298:1995, Annex D). e MTT 80 may be obtaine
21、d from Rhein Chemie Rheinau GmbH, Mlheimer Str. 24-28, D-68219 Mannheim 81, Germany. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/18/2007 19:36:10 MDTNo reproduction or networking per
22、mitted without license from IHS -,-,- ISO 2475:1999/Amd.1:2005(E) 2 ISO 2005 All rights reserved Page 6 In the list in 6.2.3, replace item e) by: e) If using formulation A, add the MTT 80 1,0 If using formulation B, add the sulfur, DOTG and CBS 2,0 After item g), replace the total time by: Total tim
23、e Formulation A: 15,0 Formulation B: 16,0 In item j), replace ISO 471 by ISO 23529. Page 7 At the end of the list in 7.2.4, replace ISO 471 by ISO 23529. Page 8 In Clause 9, second paragraph, replace ISO 471 by ISO 23529. Replace the text of 10.2 by the following: Type 2 interlaboratory precision pr
24、ogrammes were conducted for formulation A and formulation B in Table 2, using the mill mix procedure. Both repeatability and reproducibility are short term, a period of a few days separating replicate test results. A test result is a value, as specified by this test method, obtained for one determin
25、ation (measurement) of the selected property. Three different CR formulations were evaluated for precision: sulfur-modified CR, mercaptan-modified CR (formulation A) and mercaptan-modified CR (formulation B). The sulfur-modified CR and mercaptan-modified CR (formulation A) were tested in eight labor
26、atories on two different days. The mercaptan-modified CR (formulation B) was tested in five laboratories on four different days. On each of the days, duplicate determinations were made. The estimates of the repeatability parameters therefore contain two undifferentiated sources of variation, i.e. re
27、plicates within days and between days. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/18/2007 19:36:10 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 2475
28、:1999/Amd.1:2005(E) ISO 2005 All rights reserved 3 Page 9, Table 3 Replace the existing table with the following: Table 3 Type 2 precision for vulcanization parameters and stress/strain properties of CR Within laboratory Between laboratories Property Unit Mean sr r (r) sR R (R) CR Sulfur grade a ML
29、MH ts1 tc(90) dNm dNm min min 5,7 53,9 2,1 8,6 0,28 1,03 0,22 0,52 0,80 2,87 0,61 1,45 14,0 5,3 28,6 16,8 1,16 2,97 0,51 1,36 3,24 8,32 1,43 3,81 56,7 15,4 66,7 44,1 100 % modulus 300 % modulus Tensile strength Elongation MPa MPa MPa % 3,0 11,8 26,1 597 0,10 0,41 0,77 16,65 0,27 1,15 2,15 46,62 9,0
30、9,8 8,3 7,8 0,17 0,60 1,66 32,00 0,48 1,67 4,65 89,60 16,1 14,2 17,8 15,0 CR Mercaptan grade (formulation A) a ML MH ts1 tc(90) dNm dNm min min 7,6 47,5 2,2 10,7 0,27 0,69 0,10 0,87 0,77 1,93 0,28 2,43 10,1 4,1 12,9 24,6 1,02 3,31 0,32 2,47 2,87 9,27 0,89 6,91 37,9 19,5 41,1 69,8 100 % modulus 300 %
31、 modulus Tensile strength Elongation MPa MPa MPa % 2,6 14,5 24,3 441 0,12 0,69 1,24 23,58 0,34 1,94 3,48 66,03 13,2 13,4 14,2 15,0 0,24 1,18 1,51 34,17 0,67 3,31 4,23 95,67 25,6 22,8 17,4 21,7 CR Mercaptan grade (formulation B) b ML MH ts1 tc(90) dNm dNm min min 1,7 27,8 2,2 35,7 0,06 0,40 0,11 1,18
32、 0,16 1,14 0,31 3,34 9,3 4,1 14,2 9,4 0,23 2,55 0,28 4,32 0,65 7,23 0,80 12,23 37,7 26,0 36,6 34,3 100 % modulus 300 % modulus Tensile strength Elongation MPa MPa MPa % 3,5 15,4 26,5 479 0,26 1,09 0,98 28,18 0,75 3,09 2,76 79,74 21,4 20,1 10,4 16,7 0,50 1,81 1,74 49,27 1,42 5,13 4,93 139,45 40,8 33,
33、3 18,6 29,1 a Curing conditions: 160 C for 15 min. The curemeter used was the oscillating-disc type. b Curing conditions: 160 C for 20 min. The curemeter used was the rotorless type. Page 11, Bibliography Delete the years of publication of ISO 1629 and ISO 6472. Copyright International Organization
34、for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/18/2007 19:36:10 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 2475:1999/Amd.1:2005(E) ICS 83.060 Price based on 3 pages ISO 2005 All rights re
35、served Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/18/2007 19:36:10 MDTNo reproduction or networking permitted without license from IHS -,-,- ICS 83.060Ref. No. ISO 2475:1999/Cor.1:2
36、001(E) ISO 2001 All rights reserved Printed in Switzerland INTERNATIONAL STANDARD ISO 2475:1999 TECHNICAL CORRIGENDUM 1 Published 2001-06-01 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION ? ?ORGANISATION INTERNATIONALE DE NORMALISATION Chloroprene rubber (CR) General-purpose types Evaluation procedu
37、re TECHNICAL CORRIGENDUM 1 Caoutchouc chloroprne (CR) Types usage gnral Mthode dvaluation RECTIFICATIF TECHNIQUE 1 Technical Corrigendum 1 to International Standard ISO 2475:1999 was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee SC 3, Raw materials (including la
38、tex) for use in the rubber industry. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/18/2007 19:36:10 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 2475:1
39、999/Cor.1:2001(E) 2ISO 2001 All rights reserved Page 3 Table 1 Replace the existing table with the following: Table 1 Standard test formulation for evaluation of sulfur-modified chloroprene rubbers MaterialParts by mass Chloroprene rubber (CR), sulfur-modified100,00 Stearic acida0,50 Magnesium oxide
40、 b 4,00 Carbon black c 25,00 Zinc oxide d 5,00 Total134,50 a See ISO 8312. b The surface area of the magnesium oxide shall be between 130 m2/g and 200 m2/g. Magnesium oxide will absorb water and carbon dioxide when exposed to air and this can affect its activity in compounds. Store it in a dry envir
41、onment. c The current industry reference black (IRB), or an equivalent national or international standard reference material, shall be used. d Class B1a (see ISO 9298:1995, annex D). Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technic
42、al Standards 1/9972545001 Not for Resale, 04/18/2007 19:36:10 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 2475:1999/Cor.1:2001(E) ISO 2001 All rights reserved3 Page 5 Table 2 Replace the existing table with the following: Table 2 Standard test formulation for evalua
43、tion of mercaptan-modified chloroprene rubbersa MaterialParts by mass Chloroprene rubber (CR), mercaptan-modified100,00 Magnesium oxide b 4,00 Carbon black c 25,00 Zinc oxide d 5,00 MTT 80 in polymeric binder (curative) e 0,45 Total134,45 a This CR test formulation contains 3-methylthiazolidinethion
44、e-2 (MTT) instead of ethylene thiourea, a suspected carcinogen. b The surface area of the magnesium oxide shall be between 130 m2/g and 200 m2/g. Magnesium oxide will absorb water and carbon dioxide when exposed to air and this can affect its activity in compounds. Store it in a dry environment. c T
45、he current industry reference black (IRB), or an equivalent national or international standard reference material, shall be used. d Class B1a (see ISO 9298:1995, annex D). e MTT 80 may be obtained from Rhein Chemie Rheinau GmbH, Mlheimer Str. 24-28, D-68219 Mannheim 81, Germany. Copyright Internatio
46、nal Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/18/2007 19:36:10 MDTNo reproduction or networking permitted without license from IHS -,-,- Reference number ISO 2475:1999(E) ISO 1999 INTERNATIONAL STANDARD I
47、SO 2475 Fourth edition 1999-12-01 Chloroprene rubber (CR) General- purpose types Evaluation procedure Caoutchouc chloroprne (CR) Types usage gnral Mthode dvaluation Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/18/2007 19:36:10 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 2475:1999(E) PDF disclaimer This PDF file may contain embedd