ISO INTERNATIONAL STANDARD 2393 Fourthedition 2014-03-01 Rubber test mixes Preparation, mixing and vulcanization - Equipment and procedures Melanges d'essais a base de caoutchouc - Melangeage, preparation et vulcanisation-Appareillage etmodesopératoires Sample of a typical isO standard Referencenumber ISO2393:2014(E) LSO @IS02014 IS02393:2014(E) Sample of a typical sO standard COPYRIGHTPROTECTEDDOCUMENT @ISO2014 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56.CH-1211 Geneva 20 Tel. + 4122 749 0111 Fax +41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland ii @ IS0 2014- All rights reserved IS02393:2014(E) Contents Page Foreword ..iv 1 Scope .1 2 Normativereferences 3 Terms and definitions 4 Compounding ingredients .2 5 Preparation of materials. .2 5.1 Batchmasses .2 5.2 Weighingtolerances .2 5.3 Carbon black conditioning .2 6 Mixing equipment .2 6.1 Mixing mill .2 6.2 Laboratory internal mixer .3 7 Mixing procedures .4 7.1 General .4 7.2 Mill mixingprocedure 4 7.3 Laboratory internal mixermixing procedure ..5 8 Preparationof standardvulcanized sheetsfordumb-belltestpieces ..7 8.1 Conditioning ofbatches and blankpreparation .7 8.2 Vulcanization equipment ..8 8.3 Vulcanization procedure. .10 Preparation of standard vulcanized discs for ringtestpieces .11 9 9.1 Conditioningofbatchesandblankpreparation ..11 9.2 Vulcanization equipment ..11 9.3 Vulcanization procedure ..12 10 Precision ..12 Annex A (informative) Precision statement for both mill and internal mixer. ..14 Annex B (informative) Internal mixer parameters and operating conditions for the three interlaboratorytestprogrammes. .21 Annex C (informative)Furtheranalysis oftheITP data .23 Bibliography .24 @IS0 2014-All rights reserved Sample ofatypical isO standard iii