《ISO-9073-3-1989.pdf》由会员分享，可在线阅读，更多相关《ISO-9073-3-1989.pdf（8页珍藏版）》请在三一文库上搜索。
1、INTERNATIONAL STANDARD IS0 9073-3 First edition 1989-07-01 Textiles - Test methods for nonwovens - Part 3: Determination of tensile strength and elongation Tex tlJles - Mthodes dessai pour nontissk - Par-tie 3 .= Dk termina tion de la rksistance ;i la traction et de lallongemen t Reference number IS
2、0 9073-3 : 1989 (El Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 19:45:26 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 9073-3 : 1989 (El Forew
3、ord IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 technical committees. Each member body interested in a subject for which a techni
4、cal committee has been established has the right to be represented on that committee. International organizations, govern- mental and non-governmental, in liaison with ISO, also take part in the work. IS0 collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
5、 electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the IS0 Council. They are approved in accordance with IS0 procedures requiring at least 75 % app
6、roval by the member bodies voting. International Standard IS0 9073-3 was prepared by Technical Committee ISO/TC 38, Textiles. IS0 9073 consists of the following parts, under the general title Textiles - Test methods for nonwovens : - - - - Part 7: Determination of mass per unit area Part 2: Determin
7、ation of thickness fart 3 : Determination of tensile strength and elongation Part 4: Determination of tear resistance 0 IS0 1989 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm,
8、 without permission in writing from the publisher. International Organization for Standardization Case postale 56 l CH-1211 Geneve 20 l Switzerland Printed in Switzerland ii Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standa
9、rds 1/9972545001 Not for Resale, 04/26/2007 19:45:26 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 9073-3 : 1989 (E) Introduction Although nonwovens are classified within the textile industry, it should be recognized that nonwovens technologically share characteristic
10、s not only with textile products but also with paper and/or plastic products. There is an existing international textile test, IS0 5081. However, in order to meet the specific needs of nonwovens, alternative requirements to those listed in IS0 5081 are specified in this part of IS0 9073. These are a
11、) b) a different sampling procedure; a constant rate of extension, i.e. 100 mm/min. . . . III Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 19:45:26 MDTNo reproduction or netwo
12、rking permitted without license from IHS -,-,- This page intentionally left blank Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 19:45:26 MDTNo reproduction or networking permit
13、ted without license from IHS -,-,- INTERNATIONAL STANDARD IS0 9073-3 : 1989 (E) Textiles - Test methods for nonwovens - Part 3: Determination of tensile strength and elongation 1 Scope This part of IS0 9073 specifies a method for the determination of the tensile properties of nonwovens by the cut st
14、rip method. NOTE - Anomalies can occur when testing some spun-laid and glass fibre nonwovens. This may require modification of the test procedure. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this part of IS0 9073.
15、At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this part of IS0 9073 are encouraged to investigate the possibility of applying the most recent editions of the standards listed below. Members of IEC and IS0 main
16、- tain registers of currently valid International Standards. IS0 139 : 1973, Textiles - Standard atmospheres for con- ditioning and testing. IS0 186 : 1985, Paper and board - Sampling to determine average quality. IS0 5081 : 1977, Textiles - Woven fabrics - Determination of breaking strength and elo
17、ngation (Strip method). 3 Principle Application of a force longitudinally to a test piece of a specified length and width at a constant rate of extension. Determination of values for breaking strength and elongation from the recorded force-elongation curve. 4 Apparatus 4.1 Tensile testing machine, c
18、onstant rate of extension type, equipped with an autographic recorder to register applied force and clamp separation. 4.2 Clamps, with jaws capable of holding the test pieces securely across their full width without damage. 5 Sampling Carry out sampling in accordance with IS0 186, where possible tak
19、ing test specimens of an approximate length at 1 m from the full width of the material. Ensure that the areas from which the specimens are taken have no visible flaws and are not creased. NOTE - This method of sampling recognizes and makes provisions for “anisotropy” (differences in properties along
20、 various directions, princi- pally machine and cross direction) in the final specimens. However, these specimens are random representatives of the material and in some cases it may be desirable to investigate systematic variations of properties (including anisotropy), for example across the width, o
21、r in certain positions along the length of a given reel. In all such cases, spe- cial provisions should be agreed between purchaser and vendor and recorded in the test report. A procedure for more detailed examination of variability within a given batch of material is available in TAPPI T 11-05-74 a
22、nd may be found helpful. This publication may be obtained from : The Technical Association of Pulp and Paper Industries, 1 Dun- woody Park, Atlanta, Georgia 30338, USA. 6 Preparation and conditioning of test pieces 6.1 Unless otherwise specified, cut five test pieces in the machine direction and fiv
23、e in the cross-machine direction, ensuring that they are all taken at least 100 mm from the edge and are equally distributed across the width and length of the specimen. 6.2 Cut the test pieces 50 mm ?I 0,5 mm wide and of suf- ficient length to allow a jaw separation of 200 mm, thus avoiding risks d
24、ue to local heterogeneity of nonwovens or to undue cutting of long-fibre nonwovens. NOTE - Wider test pieces and different forms of clamping, e.g. C-form or piped form, may be used by agreement between the interested parties; a note of these special conditions should be included in the test report.
25、6.3 Condition the test pieces as specified in IS0 139. 6.4 If wet tensile tests are required, soak the test pieces, without conditioning, for at least 1 h in a solution containing 1 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technica
26、l Standards 1/9972545001 Not for Resale, 04/26/2007 19:45:26 MDTNo reproduction or networking permitted without license from IHS -,-,- Is0 9073-3 : 1989 (El 1 g of a non-ionic wetting agent per litre of distilled water. Remove a test piece, shake off excess water, and test im- mediately. Repeat the
27、operation for each of the other nine test pieces. NOTE - A wetting time of less than 1 h may be used by agreement between the interested parties; if so, it should be noted in the test report. 7 Procedure 7.1 Carry out the testing in the standard atmosphere for testing (see IS0 139). 7.2 Set the jaws
28、 of the tensile testing machine 200 mm + 1 mm apart and clamp the test piece between them; straighten out the test piece until the force curve is on the zero line. NOTES 1 Pretensioning may be applied as described in IS0 5081; if so, it should be noted in the test report. 2 Where 200 mm is not avail
29、able, a shorter test piece may be tested by agreement ibetween the interested parties; if so, this should be noted in the test report. 7.3 Apply a constant rate of extension of 100 mm/min and record the force-elongation curve for each test piece. NOTE - Other rates of extension may be desirable and
30、should be agreed between the interested parties; if so, they should be noted in the test report. 8 Expression of results 81 . mum Use the force-elongation curve to determine the maxi- breaking strength in newtons. If severa I peak values for the breaking strength occur during the test, take the high
31、est value as the maximum breaking strength, and note this occur- rence in the test report. 8.2 Determine the elongation of the test piece at the maxi- mum breaking strength and express this as a percentage of the nominal gauge length, that is, the original jaw separation. 8.3 Discard the results fro
32、m any test piece where the break occurs in the clamp or where any break reaches the jaws at a minimum of one point. 8.4 Determine the means of the results, expressing the average breaking strength, in newtons, to the nearest 0,l N, and the average percentage elongation at break to the nearest 0,5 %.
33、 Calculate the coefficients of variation of the results. NOTE under the Rupture curve. energy may also be calculated from the total area 9 Test report The test report shall include the following information: a) a reference to this part of IS0 9073; b) all details material; c) the results of the test
34、 cross di rection (see 8.4); necessary for the identification of the the machine direction and d) the conditioning atmosphere used; e) an y unusua I features noted during ations from the standard procedure. the testing, or devi- 2 Copyright International Organization for Standardization Provided by
35、IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 19:45:26 MDTNo reproduction or networking permitted without license from IHS -,-,- This page intentionally left blank Copyright International Organization for Standardization Provided by IHS under li
36、cense with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 19:45:26 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 9073-3 : 1989 (E) UDC 677.076.4 : 677.017.42 : 620.172 Descriptors : textiles, fabrics, nonwoven fabrics, tests, tension tests. Price based on 2 pages Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 19:45:26 MDTNo reproduction or networking permitted without license from IHS -,-,-