ISO INTERNATIONAL STANDARD 21760-1 First edition 2019-05 Adhesives for organic electronic devices Determination of water vapour transmission rate - Part 1: Adhesive film preparation methods Adhésifs pour dispositifs électroniques organiques - Détermination du taux de transmission de vapeur d'eau- Partie 1: Meéthodes de préparation du film adhésif Reference number IS0 21760-1:2019(E) @ IS0 2019 IS0 21760-1:2019(E) COPYRIGHTPROTECTEDDOCUMENT @ IS0 2019 All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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 CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 01 11 Fax: +41 22 749 09 47 Email: copyright@iso.org Website: www.iso.org Published in Switzerland ii @ IS0 2019 - All rights reserved IS0 21760-1:2019(E) Contents Page Foreword .iv 1 Scope 1 2 Normative references 1 3 Terms and definitions 4 Principle 1 5 Test specimens 2 5.1 Substrate for non-self-supporting adhesives 2 5.2 Preparation of test specimens 2 5.2.1 Preparation of non-self-supporting adhesives on a substrate 2 5.2.2 Testspecimen 3 5.2.3 Number of specimens. .3 6 Conditioning .3 7 Determination of the thickness of the adhesive .3 7.1 General 3 7.2 Determination of the thickness of the adhesives by calculation .3 7.3 Determination of the thickness of the adhesive by optical, mechanical or other suitable methods .3 8 Test methods. .4 9 Procedure 4 9.1 General 4 9.2 Water vapour transmission rate, WAs, of the substrate plus adhesive film 4 9.3 Water vapour transmission rate, Ws, of the substrate 4 10 Calculation 5 10.1 General 5 10.2 Water vapour transmission rate, WA, of non-self-supporting adhesive films 5 11 Test condition .5 12 Test result 5 13 Precision. .6 14 Test report. .6 Annex A (informative) Spin coating application methods .7 Annex B (informative) Blade coating application methods .8 Annex C (informative) Spray coating application methods .9 Bibliography 10 @ IS0 2019 - All rights reserved iii