1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-22666-4 SANS 3380:2010Edition 1ISO 3380:2002Edition 2SOUTH AFRICAN NATIONAL STANDARD Leather Physical and mechanical tests Determination o
4、f shrinkage temperature up to 100 C This national standard is the identical implementation of ISO 3380: 2002 and is adopted with the permission of the International Organization for Standardization. Published by SABS Standards Division 1 Dr Lategan Road Groenkloof Private Bag X191 Pretoria 0001Tel:
5、+27 12 428 7911 Fax: +27 12 344 1568 www.sabs.co.za SABS SANS 3380:2010 Edition 1 ISO 3380:2002 Edition 2 Table of changes Change No. Date Scope National foreword This South African standard was approved by National Committee SABS TC 120B, Leather Leather test methods, in accordance with procedures
6、of the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement. This SANS document was published in January 2010. Reference numberISO 3380:2002(E)IULTCS/IUP 16ISO 2002INTERNATIONAL STANDARD ISO3380IULTCS/IUP16Second edition2002-12-15Leather Physical and mechanical tests Determin
7、ation of shrinkage temperature up to 100 C Cuir Essais physiques et mcaniques Dtermination de la temprature de rtrcissement jusqu 100 C SANS 3380:2010This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 3380:2002(E) PDF disclaimer This PDF fil
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10、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 2002 All rights reserved. Unl
11、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
12、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 2002 All rights reservedSANS 3380:2010This s tandard may only be used and printed by approved subscription and freemailing clients o
13、f the SABS .ISO 3380:2002(E) ISO 2002 All rights reserved iiiContents Page Foreword iv 1Scope12Normative references13Principle14Apparatus.15Sampling and sample preparation.36Procedure.37Test report3Annex A (informative) Sources of test apparatus.4SANS 3380:2010This s tandard may only be used and pri
14、nted by approved subscription and freemailing clients of the SABS .ISO 3380:2002(E) iv ISO 2002 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standar
15、ds 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. International organizations, governmental and non-governmental, in liaison with ISO, also take
16、 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 the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is
17、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 a vote. Attention is drawn to the possibility
18、 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. ISO 3380 was prepared by the Physical Test Commission of the International Union of Leather Technologists and Chemists Societies (IUP Comm
19、ission, IULTCS) in collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/TC 289, Leather, the secretariat of which is held by UNI, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement). It is based on IUP 16 originally
20、published in J. Soc. Leather Trades Chemists 47, p. 122, (1963) and declared an official method of the IULTCS in 1963. This updated version was published in J. Soc. Leather Tech. Chem. 84, p. 359, (2000) and reconfirmed as an official method in March 2001. This same principle is used but the text ha
21、s been updated and includes the number of test pieces to be taken. This second edition cancels and replaces the first edition (ISO 3380:1975), which has been technically revised. SANS 3380:2010This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .I
22、NTERNATIONAL STANDARD ISO 3380:2002(E) ISO 2002 All rights reserved 1Leather Physical and mechanical tests Determination of shrinkage temperature up to 100 C 1 ScopeThis International Standard specifies a method for determination of the shrinkage temperature of leather up to 100 C.It is applicable t
23、o all leathers.ISO 2418Leather - Chemical, physical and mechanical and fastness tests - Sampling locationISO 2589Leather - Physical and mechanical tests - Determination of thicknessISO 3696:1987Water for analytical laboratory use - Specification and test methods3 PrincipleThe test piece is heated at
24、 a specified rate in water until a sudden shrinkage occurs.4 Apparatus4.1 A schematic layout of a suitable instrument is shown in figure 1. The instrument should include the followingparts:4.1.1 Vessel, minimum volume 500 ml and minimum working depth 110 mm. The vessel may be pressurised tooperate a
25、t temperatures in excess of 100 C.4.1.2 Fixed test piece holder, for example a pin or clip, 30 mm 5 mm above the base of the vessel.4.1.3 Moveable test piece holder, for example a hook or clip. One end is attached to the top of the test piece.The other end is attached to a thread which passes over a
26、 pulley and terminates in a mass 3 g heavier than themoveable holder.4.1.4 Pointer, with means of monitoring its movement. In the instrument shown, the relative dimensions of thepulley and pointer shall be such that any movement of the moveable holder (4.1.3) is magnified by a factor of atleast 5.4.
27、1.5 Temperature measuring device, graduated to 1 C and shown to be accurate to 0,5 C with the sensorplaced close to the centre of the test piece and a working range suitable for the sample under test.4.1.6Distilled or de-ionized water, conforming to the requirements of grade 3 of ISO 3696:1987.4.1.7
28、 Heater, capable of heating the vessel filled to its working depth with distilled or deionized water at a rate of2 C 0,2 C/min.4.1.8 Stirrer, capable of sufficiently agitating the water in the vessel such that the temperatures at the top andbottom of the test piece do not differ by more than 1 C.2 N
29、ormative references The following referenced documents are indispensable for the application 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. SANS 3380:2010This s tandard
30、may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 3380:2002(E) 2 ISO 2002 All rights reservedKey1 Pulley2 3g force3 Pointer4 Temperature measuring device (Thermometer shown)5 Fixed test piece holder6 Vessel7 Test piece8 Movable test piece holderFigure 1 S
31、hrinkage temperature apparatus (schematic)4.2Thickness gauge, conforming to the requirements of ISO 2589.4.3 Desiccator, or other vessel which can be evacuated.4.4 Vacuum pump, capable of reducing the absolute pressure in the desiccator to less than 4 kPa within 2 min.4.5 Glass test tube, with inter
32、nal diameter 10 mm 2 mm and minimum height 100 mm.SANS 3380:2010This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 3380:2002(E) ISO 2002 All rights reserved 35 Sampling and sample preparation5.1Sample in accordance with ISO 2418.5.2Determine
33、 the thickness of the sample in accordance with ISO 2589.5.3 Cut rectangular test pieces 50 mm 2mm x 3,0 mm 0,2 mm if the thickness of the sample is 3 mm or less.If the thickness is greater than 3 mm cut rectangular test pieces 50 mm 2 mm x 2,0 mm 0,2 mm. Prepare 2test pieces parallel to the backbon
34、e and 2 test pieces perpendicular to the backbone.NOTE 1If there is a requirement for more than two hides or skins to be tested in one batch, then only one test piece in eachdirection need be taken from each hide or skin, provided that the overall total is not less than two test pieces in each direc
35、tion.NOTE 2 There is no requirement to condition the sample for this test or to carry out the test under standard conditions.6 ProcedureFor dry test samples, carry out steps 6.1 to 6.3. For wet test samples, omit steps 6.1 to 6.3.6.1 Put 5,5 ml 0,5 ml distilled or deionized water into the glass tube
36、 (4.5) and immerse the test piece in it, usinga glass rod to keep it immersed, if necessary.6.2 Stand the tube in the desiccator (4.3), supporting it in an upright position if necessary. Evacuate thedesiccator and maintain the absolute pressure in it below 4 kPa for 1 to 2 min.6.3Allow air to enter
37、the desiccator and keep the test piece immersed for a minimum of 1 h and a maximum of 6 h.6.4 Attach an end of the test piece to the fixed test piece holder (4.1.2) and the other end to the moveable holder(4.1.3). Adjust the thread, pulley and mass so that the test piece is held under the tension of
38、 the mass.6.5 Place sufficient warmed distilled or deionized water into the vessel (4.1.1) to give a depth of at least 30 mmover the top of the test piece. If the shrinkage temperature of the test piece is known or suspected to be below60 C then use water with a temperature at least 10 C below the e
39、xpected shrinkage temperature.6.6 Heat the water and maintain the rate of temperature rise at 2 C 0,2 C/min.6.7 At 30 s intervals note the temperature and the corresponding position of the pointer. Continue theobservations until the test piece shrinks considerably, the water boils vigorously or the
40、desired temperature isreached. If the water boils record the temperature.6.8Inspect the results or plot pointer position against temperature to find the temperature corresponding to themovement of the pointer which is equivalent to a shrinkage of the test piece of 0,3 % from its maximum length.Recor
41、d the temperature as the shrinkage temperature.6.9 If the shrinkage temperature determined in 6.8 is not at least 5 C higher than the temperature of the wateroriginally placed in the vessel discard the result and repeat the steps 6.1 to 6.8 using water at a lower initialtemperature.7 Test reportThe
42、test report shall include the following:a) reference to this International Standard, i.e. ISO 3380:2002;b) the mean shrinkage temperature in each direction as obtained in 6.8 or quoted as greater than the finaltemperature reached in 6.7;c) any deviations from the method specified in this Internation
43、al Standard;d) full details for identification of the sample and any deviations from ISO 2418 with respect to sampling.SANS 3380:2010This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 3380:2002(E) 4 ISO 2002 All rights reservedAnnex A(inform
44、ative)Sources of test apparatusExamples of suitable products available commercially are given below. This information is given for theconvenience of users of this International Standard and does not constitute an endorsement by ISO of theseproducts.The apparatus is manufactured for example by:SATRA
45、Technology Centre, SATRA House, Rockingham Rd, Kettering, Northants NN16 9JH, England;Giuliani Apparecchi Scientifici, via Centrallo, 68/18, I-1056 Torino, Italy;SODEMAT, 29 rue Jean Moulin, ZA Coulmet, F-10450 Breviandes, France;Muver - Francisco Muoz Irles, Avda Hispanoamerica 42, E-03610 Petrer (
46、Alicante), Spain. SABSSANS 3380:2010This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .SABS Standards Division The objective of the SABS Standards Division is to develop, promote and maintain South African National Standards. This objective is i
47、ncorporated in the Standards Act, 2008 (Act No. 8 of 2008). Amendments and Revisions South African National Standards are updated by amendment or revision. Users of South African National Standards should ensure that they possess the latest amendments or editions. The SABS continuously strives to im
48、prove the quality of its products and services and would therefore be grateful if anyone finding an inaccuracy or ambiguity while using this standard would inform the secretary of the technical committee responsible, the identity of which can be found in the foreword. Tel: +27 (0) 12 428 6666 Fax: +
49、27 (0) 12 428 6928 The SABS offers an individual notification service, which ensures that subscribers automatically receive notification regarding amendments and revisions to South African National Standards. Tel: +27 (0) 12 428 6883 Fax: +27 (0) 12 428 6928 E-mail: salessabs.co.za Buying Standards Contact the Sales Office for South African and international standards, which are available in both electronic and hardcopy format. Tel: +27 (0) 12 428 6883 Fax: +27 (0) 12 428 6928 E-mail: salessabs.co
