ISO INTERNATIONAL STANDARD 19403-5 First edition 2017-06 Paints and varnishes Wettability Part 5: Determination of the polar and dispersive fractions of the surface tension of liquids from contact angles measurements on a solid with only a disperse contribution to its surface energy Peintures et vernis-Mouillabilité- Partie 5: Determination des fractions polaires er disperses de la tension superficielle des liquides a partir de I'angle de contact avec un solide n'ayant qu'une contribution de dispersion a son énergie de surface Reference number IS019403-5:2017(E) rso International Organization for Standardization @ IS0 2017 STANDARDIZATIONC15956617 without license from IHS IS0 19403-5:2017(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2017, Published in Switzerland 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. ISOcopyrightoffice Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel.+4122 7490111 Fax +41 22 749 09 47 copyright@iso.org www.iso.org Internatinair PrganizationforStandardization ensee-ZHEJIANG INST.OF.STANDARDIzARoISQa7 - All rights reserved Not for Resale, 2017/9/11 05:51:42 etworking permitted without license from IHS IS0 19403-5:2017(E) Contents Page Foreword ..iv 1 Scope .1 2 Normativereferences .1 3 Terms and definitions 4 Principle 5 Reference solid. ..2 6 Sampling. .2 7 Procedure .2 7.1 Test conditions .2 7.2 Determination of the surface tension of the liquid to be tested .2 7.3 Determination of the surface free energy of the reference solid 3 7.4 Determination of the contact angle of the liquid to be tested on the reference solid ..3 8 Evaluation 3 8.1 General .3 8.2 Owens-Wendt-Rabel-Kaelble method (OWRK method) .3 8.3 Wu method 4 8.4 Calculation of the polar fraction of the surface tension of the liquid. .4 9 Precision .4 10 Test report 4 Bibliography 6 iii ee=ZHEJIANG INSTOF STANDARDIZATION C15956617 vided by IHS under lic ithout license from IHS