ISO INTERNATIONAL STANDARD 2475 Fifth edition 2011-11-01 Chloroprene rubber (CR) General- purpose types Evaluation procedure Caoutchouc chloroprene (CR) — Types a usage genéral — Méthode d'évaluation Reference number ISO 2475:2011(E) @ ISO 2011 Provided by IHS se from IHS Not for Resale ISO 2475:2011(E) COPYRIGHTPROTECTEDDOCUMENT @ ISO2011 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 Iso's member body in the country of the requester. ISO copyright office Case postale 56 . CH-1211 Geneva 20 Tel. + 4122749 01 11 Fax + 4122 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland ii @ ISO 2011 - All rights reserved Provided by IHS r networking permitted without license from IHS Not for Resale ISO 2475:2011(E) Contents Page Foreword .iv 1 Scope, 2 Normative references 3 Sampling and sample preparation. 4 Physical and chemical tests on raw rubber . 4.1 Mooney viscosity.. 4.2 Volatile matter... 4.3 Ash.. 5 Sulfur-modified chloroprene rubbers - Preparation of the test mix for evaluation ... 5.1 Standard test formulation... 5.2 Procedure.... 6 Mercaptan-modified chloroprene rubbers Preparation of the test mix for evaluation.. 6.1 Standardtest formulation... 6.2 Procedure.... 7 Preparation of the test mix for evaluation of sulfur-modified or mercaptan-modified chloroprene with miniature internal mixer (MiM)... 7.1 Standard test formulations...... 7.2 Procedure.. 8 Evaluation of vulcanization characteristics by a curemeter test 8.1 Using an oscillating-disc curemeter... 8.2 Using a rotorless curemeter.. .8 9 Evaluation of tensile stress-strain properties of vulcanized test mixes ... .8 10 Precision 9 11 Test report. Annex A (informative) Precision statement. 10 Bibliography.. @Iso2011-All rights reserved ii Not for Res