EN ISO 19403-2:2020

SLOVENSKI STANDARD
01-april-2020
Barve in laki - Omočljivost - 2. del: Določevanje proste površinske energije površin
trdnih teles z merjenjem stičnega kota (ISO 19403-2:2017)
Paints and varnishes - Wettability - Part 2: Determination of the surface free energy of
solid surfaces by measuring the contact angle (ISO 19403-2:2017)
Beschichtungsstoffe - Benetzbarkeit - Teil 2: Bestimmung der freien Oberflächenenergie
fester Oberflächen durch Messung des Kontaktwinklels (ISO 19403-2:2017)
Peintures et vernis - Mouillabilité - Partie 2: Détermination de l'énergie libre de surface
des surfaces solides par la mesure de l'angle de contact (ISO 19403-2:2017)
Ta slovenski standard je istoveten z: EN ISO 19403-2:2020
ICS:
87.040 Barve in laki Paints and varnishes
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 19403-2
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2020
EUROPÄISCHE NORM
ICS 01.040.87
English Version
Paints and varnishes - Wettability - Part 2: Determination
of the surface free energy of solid surfaces by measuring
the contact angle (ISO 19403-2:2017)
Peintures et vernis - Mouillabilité - Partie 2: Beschichtungsstoffe - Benetzbarkeit - Teil 2:
Détermination de l'énergie libre de surface des Bestimmung der freien Oberflächenenergie fester
surfaces solides par la mesure de l'angle de contact Oberflächen durch Messung des Kontaktwinkels (ISO
(ISO 19403-2:2017) 19403-2:2017)
This European Standard was approved by CEN on 4 November 2019.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 19403-2:2020 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
The text of ISO 19403-2:2017 has been prepared by Technical Committee ISO/TC 35 "Paints and
varnishes” of the International Organization for Standardization (ISO) and has been taken over as
which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by August 2020, and conflicting national standards shall
be withdrawn at the latest by August 2020.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 19403-2:2017 has been approved by CEN as EN ISO 19403-2:2020 without any
modification.
INTERNATIONAL ISO
STANDARD 19403-2
First edition
2017-06
Paints and varnishes — Wettability —
Part 2:
Determination of the surface free
energy of solid surfaces by measuring
the contact angle
Peintures et vernis — Mouillabilité —
Partie 2: Détermination de l’énergie libre de surface des surfaces
solides par la mesure de l’angle de contact
Reference number
ISO 19403-2:2017(E)
©
ISO 2017
ISO 19403-2:2017(E)
© ISO 2017, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
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ii © ISO 2017 – All rights reserved

ISO 19403-2:2017(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Apparatus and materials. 2
6 Sampling . 3
7 Procedure. 4
7.1 General for measuring on the horizontal drop . 4
7.1.1 Setting up the contact angle measuring system . 4
7.1.2 Test conditions. 4
7.1.3 Conditioning of the test panels . 4
7.2 Measurement . 4
7.2.1 General. 4
7.2.2 Static method . 4
7.2.3 Dynamic method (progressive contact angle) . 5
7.2.4 Determination of the contact angle . 6
8 Evaluation . 6
8.1 General . 6
8.2 Owens-Wendt-Rabel-Kaelble method (OWRK method) . 6
8.3 Wu method . 7
9 Precision . 8
9.1 General . 8
9.2 Repeatability limit, r . 8
9.3 Reproducibility limit, R . 8
9.4 Calculation in accordance with Owens-Wendt-Rabel-Kaelble method (OWRK method) . 8
10 Test report . 9
Annex A (informative) Notes on measuring practice .10
Bibliography .14
ISO 19403-2:2017(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO’s adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following
URL: w w w . i s o .org/ iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee
SC 9, General test methods for paints and varnishes.
A list of all parts in the ISO 19403 series can be found on the ISO website.
iv © ISO 2017 – All rights reserved

INTERNATIONAL STANDARD ISO 19403-2:2017(E)
Paints and varnishes — Wettability —
Part 2:
Determination of the surface free energy of solid surfaces
by measuring the contact angle
1 Scope
This document specifies a test method to measure the contact angle for the determination of the surface
free energy of a solid surface. The method can be applied for the characterization of substrates and
coatings.
NOTE 1 For the determination of
...