FprEN ISO 19403-2

SLOVENSKI STANDARD
oSIST prEN ISO 19403-2:2023
01-november-2023
Barve in laki - Omočljivost - 2. del: Določevanje proste površinske energije površin
trdnih teles z merjenjem stičnega kota (ISO/DIS 19403-2:2023)
Paints and varnishes - Wettability - Part 2: Determination of the surface free energy of
solid surfaces by measuring the contact angle (ISO/DIS 19403-2:2023)
Beschichtungsstoffe - Benetzbarkeit - Teil 2: Bestimmung der freien Oberflächenenergie
fester Oberflächen durch Messung des Kontaktwinkels (ISO/DIS 19403-2:2023)
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/DIS 19403-2:2023)
Ta slovenski standard je istoveten z: prEN ISO 19403-2
ICS:
87.040 Barve in laki Paints and varnishes
oSIST prEN ISO 19403-2:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN ISO 19403-2:2023
oSIST prEN ISO 19403-2:2023
DRAFT INTERNATIONAL STANDARD
ISO/DIS 19403-2
ISO/TC 35/SC 9 Secretariat: BSI
Voting begins on: Voting terminates on:
2023-09-25 2023-12-18
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
ICS: 87.040
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
ISO/CEN PARALLEL PROCESSING
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
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NATIONAL REGULATIONS.
ISO/DIS 19403-2:2023(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION. © ISO 2023

oSIST prEN ISO 19403-2:2023
ISO/DIS 19403-2:2023(E)
DRAFT INTERNATIONAL STANDARD
ISO/DIS 19403-2
ISO/TC 35/SC 9 Secretariat: BSI
Voting begins on: Voting terminates on:

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
ICS: 87.040
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
© ISO 2023
ISO/CEN PARALLEL PROCESSING
THEREFORE SUBJECT TO CHANGE AND MAY
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
NOT BE REFERRED TO AS AN INTERNATIONAL
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on STANDARD UNTIL PUBLISHED AS SUCH.
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TECHNOLOGICAL, COMMERCIAL AND
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WHICH REFERENCE MAY BE MADE IN
Reference number
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NATIONAL REGULATIONS.
Website: www.iso.org ISO/DIS 19403-2:2023(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
Published in Switzerland
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
ii
PROVIDE SUPPORTING DOCUMENTATION. © ISO 2023

oSIST prEN ISO 19403-2:2023
ISO/DIS 19403-2:2023(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 . 5
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) . 7
8.3 Wu method . 8
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
iii
oSIST prEN ISO 19403-2:2023
ISO/DIS 19403-2:2023(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 of 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
www.iso.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, in collaboration with the European Committee for
Standardization (CEN) Technical Committee CEN/TC 139, Paints and varnishes, in accordance with the
Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
This second edition cancels and replaces the first edition (ISO 19403-2:2017), which has been
technically revised.
The main changes are as follows:
— the minimum size of the text samples has been changed to 4 cm × 4 cm;
— in 5.3, the use of ethylene glycol as test liquid has been deleted;
— in 7.2.1, the information on the camera tilt angle has been added;
— the text has been editorially revised and the normative references have been updated.
A list of all parts in the ISO 19403 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
oSIST prEN ISO 19403-2:2023
DRAFT INTERNATIONAL STANDARD ISO/DIS 19403-2:2023(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 the surface free energy of polymers and coatings, either the method in
accordance with Owens, Wendt, Rabel and Kaelble or the method in accordance with Wu is used preferably.
NOTE 2 The morphological and chemical homogeneity have an influence on the measuring results.
NOTE 3 The procedures indicated in this document are based on the state-of-the-art employing the drop
projection method in penumbral shadow. Other methods are not excluded.
NOTE 4 Measuring the contact angle on powders is not part of this document. For further information, see the
bibliography.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 4618
...