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1、INTERNATIONAL STANDARD IS0 First edition 1999-1 2-01 AMENDMENT 1 2004-1 0-1 5 Acrylonitrile-butadiene rubber (NBR) - Evaluation procedure AMENDMENT 1 Caoutchouc acrylonitrile-butadine (NBR) - Mthode dvaluation AMENDEMENT 1 Reference number IS0 4658:1999/Amd.l:2004(E) IS0 2004 Copyright International
2、 Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007 00:32:34 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 4658:1999/Amd.l:2004(E) PDF disclaimer This PDF file may contain e
3、mbedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility
4、of not infringing Adobes licensing policy. The IS0 Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the sofiware products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation paramete
5、rs were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IS0 member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. O IS02004 All rights reserved. Unless otherwise
6、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 IS0 at the address below or ISOs member body in the country of the requester. IS0 copyright offi
7、ce Case postale 56 CH-I211 Geneva 20 Tel. + 41 22 749 O 1 11 Fax +41 227490947 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii O IS0 2004 -All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical S
8、tandards 1/9972545001 Not for Resale, 04/19/2007 00:32:34 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 4658:1999/Amd.l:2004(E) Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies)
9、. The work of preparing International Standards is normally carried out through IS0 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. International organizations, governmental and non
10、-governmental, in liaison with ISO, also take part in the work. IS0 collaborates closely with the International Electrotechnical Commission (i EC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Par
11、t 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 by at least 75 % of the member bodies casting
12、 a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. IS0 shall not be held responsible for identifying any or all such patent rights. Amendment 1 to IS0 4658:1999 was prepared by Technical Committee ISOTC 45, Rubber and rubber
13、 products, Subcommittee SC 3, Raw materials (including latex) for use in the rubber industry. O IS0 2004 -All rights reserved iii Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007
14、00:32:34 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 4658:1999/Amd.l:2004(E) Introduction This Amendment describes an additional procedure for preparing standard test formulations of NBR. The additional procedure uses an internal mixer followed by final mixing on a
15、mill. The Amendment also includes precision data for formulations mixed in this manner. iv O IS0 2004 -All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007 00:32:3
16、4 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 4658:1999/Amd.l:2004(E) Acrylonitrile-butadiene rubber (NBR) - Evaluation procedure AMENDMENT 1 Page 1, Clause 2 Update the normative references as follows: - Replace IS0 471 :I 995 by IS0 23529:2004, Rubber - General pr
17、ocedures for preparing and conditioning test pieces for physical test methods. - Insert the year of publication of IS0 1795 (2000) and delete the footnote. Page 2, Subclause 5.2.1 Replace the second paragraph by the following text: The compound may be prepared on a mill, in a miniature mixer, or usi
18、ng an internal mixer followed by final mixing on a mill, although slightly different results may be obtained when using one method rather than another. Page 5, Subclause 5.2.3.3 In item j) of the list, replace IS0 471 by IS0 23529. Page 5 Add a new subclause 5.2.4, as follows: 5.2.4 Procedure using
19、an internal mixer followed by mixing on a mill 5.2.4.1 General The standard test formulation is given in Table 1 of IS0 4658: 1999. Equipment and the procedure for the preparation, mixing and vulcanization shall be in accordance with IS0 2393. If a type A, type A , or type B internal mixer, as speci
20、fied in IS0 2393: 1994, is used, the standard laboratory mill batch mass shall be seven times the formulation mass. If another type of internal mixer is used, the multiplying factor shall be established by agreement between the interested parties. O IS0 2004 -All rights reserved 1 Copyright Internat
21、ional Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007 00:32:34 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 4658:1999/Amd.l:2004(E) 5.2.4.2 Mixing in internal mixer Mix
22、with the head temperature of the internal mixer maintained at 50 “C k 5 “C and adjust the rotor speed if necessary to maintain the temperature. Load the mixing chamber with the rubber strips, lower the ram and start the timer. Duration Cumulative time (min) (min) Masticate the rubber. 130 130 Raise
23、the ram and add the previously blended zinc oxide, stearic acid and 3,O carbon black, taking care to avoid any loss. Lower the ram. Raise the ram, clean the orifice and the top of the ram and lower the ram. 395 Allow the batch to mix. 195 5,O Total time 5,O 5,O 230 03 Discharge the batch and record
24、the maximum batch temperature indicated, if desired. Pass the batch once through a mill set at 50 “C k 5 “C with a mill opening of 1,9 mm. Remove the batch from the mill. Reset the mill opening to 3,O mm and pass the batch through the mill once. Cut the batch from the mill. Check the batch mass and
25、record. If it differs from the theoretical value by more than +0,5 %/-1,5 %, discard the batch. 5.2.4.3 Batch conditioning Condition the batch for 2 h to 24 h after mixing, if possible at standard temperature and humidity as defined in IS0 23529. 5.2.4.4 Final mill mixing procedure Use the total mas
26、s of the batch conditioned as specified in 5.2.4.3. Set the mill temperature at 50 “C k 5 “C and the mill opening at 1,9 mm. Duration Cumulative time (min) (min) Band the batch on the mill. Make two 3/4 cuts from each side. 230 230 Add the sulfur and TBBS evenly and slowly across the batch. 03 295 M
27、ake three 3/4 cuts from each side. 3 8 5 9 5 Cut the batch from the mill. Set the mill opening to 0,8 mm and pass the rolled 7 9 5 2,O batch endwise between the rolls six times. Total time 73 7 9 5 2 O IS0 2004 -All rights reserved Copyright International Organization for Standardization Provided by
28、 IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007 00:32:34 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 4658:1999/Amd.l:2004(E) g) Set the mill opening to 3,O mm and pass the batch through the mill once. Cut the bat
29、ch from the mill. h) Check the batch mass and record. If it differs from the theoretical value by more than +0,5 %/-1,5 %, discard the batch. i) Set the mill temperature at 50 “C k 5 “C and the mill opening at 1 3 mm. j) Sheet the batch to approximately 2,O mm for test sheets. 5.2.4.5 Batch conditio
30、ning Condition the batch for 2 h to 24 h after milling and prior to vulcanizing, if possible at standard temperature and humidity as defined in IS0 23529. Page 7 Add a new subclause 8.4, as follows: 8.4 Precision for procedure using an internal mixer followed by mixing on a mill 8.4.1 General The pr
31、ecision calculations to express repeatability and reproducibility were performed in accordance with ISOTR 9272. 8.4.2 Precision details A type 2 (interlaboratory) precision was determined for various cure characteristics. One material (NBR rubber) was used in the interlaboratory programme. This was
32、tested in six laboratories on three different days. 8.4.3 Precision results 8.4.3.1 General information The results of the precision calculations for repeatability and reproducibility are given in Table 3. The symbols used in Table 3 are defined as follows: r = repeatability, in measurement units. T
33、his is the value below which the absolute difference between two “within-laboratory“ test results may be expected to lie, with a specified probability. (r) = repeatability, in percent (relative). The test results are obtained with the same method on nominally identical test materials under the same
34、conditions (same operator, apparatus and laboratory) and within a specified time period. Unless stated otherwise, the probability is 95 %. R = reproducibility, in measurement units. This is the value below which the absolute difference between two “between-laboratory“ test results may be expected to
35、 lie, with a specified probability. (R) = reproducibility, in percent (relative). The test results are obtained with the same method on nominally identical test materials under different conditions (different operators, apparatus and laboratories) and within a specified time period. Unless stated ot
36、herwise, the probability is 95 %. O IS0 2004 -All rights reserved 3 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007 00:32:34 MDTNo reproduction or networking permitted without li
37、cense from IHS -,-,- IS0 4658:1999/Amd.l:2004(E) S, = repeatability standard deviation, in measurement units. sR = reproducibility standard deviation, in measurement units. 8.4.3.2 Results I Property I Units Table 3 - Type 2 precision for various test parameters NOTE 1 The curemeters used were the o
38、scillating-disc type (test conditions: 160 “C, 1,7 Hz, 1“ amplitude arc). I NOTE 2 The midpoint of the range of values obtained was used for calculations of (r) and (R). Page 9, Bibliography Replace IS0 6472:1994 by IS0 6472:2004 (same title). 4 O IS0 2004 -All rights reserved Copyright Internationa
39、l Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007 00:32:34 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright International Organization for Standardization Provided by
40、IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007 00:32:34 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 4658:1999/Amd.l:2004(E) ICs 83.060 Price based on 4 pages O IS0 2004 -All rights reserved Copyright Internationa
41、l Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007 00:32:34 MDTNo reproduction or networking permitted without license from IHS -,-,- STD-IS0 4658-ENGL 3999 9 4853903 0805775 24b INTERNATIONAL STANDARD I
42、S0 4658 Third edition 1 999- 12-01 Acrylonitrile-butadiene rubber (NBR) - Evaluation procedure Caoutchouc acrylonitrile-butadine (NB) - Mthode dvaluation “This material is reproduced from IS0 documents under International Organization for Standardization (ISO) Copyright License Number HIS/CC/1996. N
43、ot for resale. No part of these IS0 documents niay be reproduced in any form, electronic retrieval system or otherwise, except as allowed in the copyright law of the country of use, or with the prior written consent of IS0 (Case postale 56,121 I Geneva 20, Switzerland Faw +41 22 734 10 79), IHS or t
44、he IS0 Licensors niembers. Reference number IS0 4658:1999( E) 0 IS0 1999 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007 00:32:34 MDTNo reproduction or networking permitted witho
45、ut license from IHS -,-,- STD-ISO 4b58-ENGL 1999 m 4851903 080597b 182 m IS0 4658: 1999( E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are
46、licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobes licensing policy. The IS0 Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details
47、of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IS0 member bodies. In the unlikely event that a problem relat
48、ing to it is found, please inform the Central Secretariat at the address given below. o IS0 1999 All rights reserved. Unless otherwise specified, no pari 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 IS0 at the address below or ISOs member body in the cou