ISO INTERNATIONAL STANDARD 16565 Third edition 2013-05-15 Rubber Determination of 5-ethylidenenorbornene (ENB) or dicyclopentadiene (DCPD) in ethylene- propylene-diene (EPDM) terpolymers Caoutchouc Détermination du 5-éthylidenenorbornene (ENB) ou du dicyclopentadiene (DCPD) dans les terpolymers d'éthylene- propylene-diene (EPDM) Reference number ISO 16565:2013(E) ISO @IS02013 ed without license from IHS Not for Resale IS0 16565:2013(E) COPYRIGHT PROTECTED DOCUMENT @IS02013 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form 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. + 41 22 749 01 11 Fax +41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ IS0 2013 - All rights reserved Not for Resale IS0 16565:2013(E) Contents Page Foreword ..iv 1 Scope. 1 2 Principle. ..1 3 Apparatus. 4 Test specimen preparation .2 4.1 Primary method. .2 4.2 Alternative method 4.3 Alternative method for liquid polymer film preparation .2 5 Acquisition of spectra .3 5.1 With a specimen shuttle ..3 5.2 Without a specimen shuttle 3 6 Calibration of the spectrophotometer ..3 7 Diene determination .4 7.1 Preparation 7.2 Single absorbance spectrum .4 7.3 Determination of film thickness 7.4 Determination of diene content. .4 8 Precision ..8 9 Test report. .9 Annex A (normative) Procedure for spectral subtraction of water vapour ..10 Annex B (informative) Precision and bias ..12 Bibliography ..14 ii ded by IHS under lic se with ISt without license from IHS Not for Resale