ISO INTERNATIONAL STANDARD 19403-4 First edition 2017-06 Paints and varnishes - Wettability Part 4: Determination of the polar and dispersive fractions of the surface tension of liquids from an interfacial tension Peintures et vernisMouillabilite- Partie 4: Détermination des fractions polaires et disperses de la tension de surface des liquides a partir de la tension interfaciable Reference number IS0 19403-4:2017(E) [so International Organization for Standardization @ IS0 2017 ed without license from IHS IS0 19403-4:2017(E) COPYRIGHTPROTECTEDDOCUMENT IS02017,PublishedinSwitzerland 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. ISO copyright office Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel.+41 22 749 0111 Fax+41227490947 copyright@iso.org www.iso.org Intenationai br PrganizationforStandardization icensee-ZHEJIANG INST.OF STANDARDIZRoISQ s1.7 - All rights reserved I by IHS unde Not for Resale, 2017/9/11 05:52:59 etworking permitted without license from IHS IS0 19403-4:2017(E) Contents Page Foreword ..iv 1 Scope 2 Normative references .1 3 Terms and definitions 4 Principle 5 Apparatus and materials ..2 6 Sampling. 7 Procedure ..4 7.1 General ..4 7.1.1 Setting up the drop contour analysis device 4 7.1.2 Test conditions. .4 7.1.3 Cleaning and conditioning of the reference liquid. .4 7.2 Determination of the interfacial tension of the liquid .5 7.2.1 Preparations .5 7.2.2 Procedure .5 7.3 Determination of the surface tension of liquids .6 8 Evaluation .6 8.1 General .6 8.2 Calculation of the dispersive fraction of the surface tension in accordance with Owens-Wendt-Rabel-Kaelble ..6 8.3 Calculation of the dispersive fraction of the surface tension in accordance with Wu ..6 8.4 Calculation of the polar fraction of the surface tension of the liquid. .7 9 Precision ..7 10 Test report .7 Bibliography .8 iii ithout license from IHS