ISO-22088-3-2006.pdf
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1、 Reference number ISO 22088-3:2006(E) ISO 2006 INTERNATIONAL STANDARD ISO 22088-3 First edition 2006-08-15 Plastics Determination of resistance to environmental stress cracking (ESC) Part 3: Bent strip method Plastiques Dtermination de la fissuration sous contrainte dans un environnement donn (ESC)
2、Partie 3: Mthode de lprouvette courbe Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 07:46:43 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 22088
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6、low. ISO 2006 All rights reserved. Unless 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
7、 in the country of the requester. ISO 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 2006 All rights reserved Copyright International Organization for Standardization Provided by
8、IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 07:46:43 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 22088-3:2006(E) ISO 2006 All rights reserved iii Contents Page Foreword iv 1 Scope . 1 2 Normative references. 1
9、 3 Terms and definitions. 2 4 Principle. 4 5 Apparatus 4 6 Test specimens. 5 6.1 Form and dimensions. 5 6.2 Preparation 5 6.3 Number 5 7 Conditioning and test conditions 5 7.1 Conditioning 5 7.2 Test temperature. 5 7.3 Test medium 5 8 Procedure 5 8.1 Precautions . 5 8.2 Mounting the test specimens 5
10、 8.3 Contact with the test environment 6 8.4 Storage in contact with the test environment 6 8.5 Determination of the indicative property 7 9 Expression of results . 7 9.1 Calculation. 7 9.2 Graphical evaluation. 7 10 Precision 8 11 Test report . 9 Bibliography. 10 Copyright International Organizatio
11、n for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 07:46:43 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 22088-3:2006(E) iv ISO 2006 All rights reserved Foreword ISO (the Internationa
12、l Organization for Standardization) is a worldwide federation of 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 es
13、tablished has the right to be represented on that committee. International 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 standardi
14、zation. International Standards are drafted in accordance with 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 vot
15、ing. Publication as an International Standard requires approval 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 suc
16、h patent rights. ISO 22088-3 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 6, Ageing, chemical and environmental resistance. It cancels and replaces ISO 4599:1986, which has been technically revised. ISO 22088 consists of the following parts, under the general title Plasti
17、cs Determination of resistance to environmental stress cracking (ESC): Part 1: General guidance Part 2: Constant tensile load method (replacement of ISO 6252:1992) Part 3: Bent strip method (replacement of ISO 4599:1986) Part 4: Ball or pin impression method (replacement of ISO 4600:1992) Part 5: Co
18、nstant tensile deformation method (new test method) Part 6: Slow strain rate method (new test method) Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 07:46:43 MDTNo reproduction
19、or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD ISO 22088-3:2006(E) ISO 2006 All rights reserved 1 Plastics Determination of resistance to environmental stress cracking (ESC) Part 3: Bent strip method 1 Scope This part of ISO 22088 specifies a method for the determinati
20、on of the environmental stress cracking (ESC) resistance of thermoplastics when they are subjected to a fixed flexural strain in the presence of chemical agents. ESC is indicated by the change of a suitably chosen indicative property of specimens that have been strained for a defined time in the env
21、ironment. The method of test is suitable for determining the resistance of sheets and of flat test specimens, especially the sensitivity of localized surface regions of specimens, to ESC. The bent strip method is suitable for the determination of ESC caused by gases and liquids as well as solids con
22、taining migrating substances (e.g. polymeric adhesives and materials containing plasticizers) in contact with a specific polymer. Preferably, this method is used to determine the ESC resistance of rigid plastics that exhibit only moderate stress relaxation during the time of the test. This is essent
23、ially a ranking test and is not intended to provide data to be used for design or performance prediction. NOTE For a constant-strain test, refer to ISO 22088-5. For a constant-load test, refer to ISO 22088-2. 2 Normative references The following referenced documents are indispensable for the applica
24、tion of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 178, Plastics Determination of flexural properties ISO 179-1, Plastics Determination of Charpy impact properties
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