ISO INTERNATIONAL STANDARD 20368 Firstedition 2017-11-15 Plastics - Epoxy resins Determination of degree of crosslinking of crosslinked epoxy resins by Fourier Transform Infrared (FTIR) Spectroscopy Plastiques-Résinesépoxy-Détermination du degré de reticulation des résines époxy reticulees par spectroscopie infrarouge a transforméedeFourier (FTIR) Referencenumber IS020368:2017(E) ISO @ISO2017 IS020368:2017(E) COPYRIGHTPROTECTEDDOCUMENT IS02017,Published in Switzerland 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. ISOcopyrightoffice Ch.de Blandonnet8.CP401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +4122749 0947 copyright@iso.org www.iso.org ii @ IS0 2017-All rights reserved IS020368:2017(E) Contents Page Foreword ..iv Introduction.. 1 Scope.. 2 Normativereferences 3 Terms and definitions 4 Principle 5 Materials. ..3 6 Apparatus. ..3 7 Procedure ..4 7.1 Preparation of measuring .4 7.2 Preliminarytest ..4 7.2.1 General ..4 7.2.2 Procedure for preliminary test ..4 7.3 FTIR measurement on the crosslinked sample under investigation .5 8 Expression of results .5 9 Precision .5 9.1 General .5 9.2 Materials and crosslinking conditions .5 9.3 Precisionofthemethod .6 10 Test report ..6 Bibliography 7 @ IS0 2017 -All rights reserved iii