kSIST FprEN ISO 19403-7:2024

SLOVENSKI STANDARD
oSIST prEN ISO 19403-7:2023
01-november-2023
[Not translated]
Paints and varnishes - Wettability - Part 7: Measurement of the dynamic contact angles
and the roll-off angle on a tilt stage (ISO/DIS 19403-7:2023)
Beschichtungsstoffe - Benetzbarkeit - Teil 7: Messung der dynamischen Kontaktwinkel
und des Abrollwinkels auf einem Neigetisch (ISO/DIS 19403-7:2023)
Peintures et vernis - Mouillabilité - Partie 7: Mesurage des angles de contact
dynamiques et de l’angle de roulement sur un plan incliné (ISO/DIS 19403-7:2023)
Ta slovenski standard je istoveten z: prEN ISO 19403-7
ICS:
87.040 Barve in laki Paints and varnishes
oSIST prEN ISO 19403-7:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN ISO 19403-7:2023
oSIST prEN ISO 19403-7:2023
DRAFT INTERNATIONAL STANDARD
ISO/DIS 19403-7
ISO/TC 35/SC 9 Secretariat: BSI
Voting begins on: Voting terminates on:
2023-09-25 2023-12-18
Paints and varnishes — Wettability —
Part 7:
Measurement of the dynamic contact angles and the roll-
off angle on a tilt stage
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
STANDARD UNTIL PUBLISHED AS SUCH.
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Reference number
NATIONAL REGULATIONS.
ISO/DIS 19403-7:2023(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 19403-7:2023
ISO/DIS 19403-7:2023(E)
DRAFT INTERNATIONAL STANDARD
ISO/DIS 19403-7
ISO/TC 35/SC 9 Secretariat: BSI
Voting begins on: Voting terminates on:

Paints and varnishes — Wettability —
Part 7:
Measurement of the dynamic contact angles and the roll-
off angle on a tilt stage
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.
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
IN ADDITION TO THEIR EVALUATION AS
or ISO’s member body in the country of the requester. BEING ACCEPTABLE FOR INDUSTRIAL,
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 19403-7:2023(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 19403-7:2023
ISO/DIS 19403-7:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Apparatus and materials .2
6 Sampling . 4
7 Procedure .4
7.1 General for measuring the roll-off angle . 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 . 5
7.2 Measurement . 5
7.2.1 General . 5
7.2.2 Application of the drop . 5
7.2.3 Determination of the roll-off angle . 6
8 Precision . 8
9 Test report . 8
Annex A (informative) Notes on sampling and treatment of test specimens .10
Annex B (informative) Factors influencing the roll-off angle .11
Bibliography .13
iii
oSIST prEN ISO 19403-7:2023
ISO/DIS 19403-7:2023(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 19403-7:2017), which has been technically
revised.
The main changes are as follows:
— the term 3.2 “advancing angle” has been amended by “advancing contact angle” and the definition
has been reworded;
— the term 3.3 “receding angle” has been amended by “receding contact angle” and the definition has
been reworded;
— the minimum size of the text samples has been changed to 4 cm × 4 cm;
— 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 19403-7:2023
ISO/DIS 19403-7:2023(E)
Introduction
Dynamic contact angles describe the processes on the interface liquid/solid during volume increase
(advancing contact angle) or volume decrease (receding contact angle) of a drop in horizontal position.
As an alternative to the static method (see ISO 19403-2), for the advancing contact angle always a
surface area is wetted, which was previously unwetted. For the receding contact angle, the contact
angle during dewetting is observed. From the difference between advancing contact angle and receding
contact angle, information on chemical homogeneity and roughness can be concluded. The receding
contact angle is not suitable for the determination of the surface energy.
v
oSIST prEN ISO 19403-7:2023
oSIST prEN ISO 19403-7:2023
DRAFT INTERNATIONAL STANDARD ISO/DIS 19403-7:2023(E)
Paints and varnishes — Wettability —
Part 7:
Measurement of the dynamic contact angles and the roll-
off angle on a tilt stage
1 Scope
This document specifies a method for the dynamic measurement of the roll-off angle of a liquid drop on
a solid surface. From the dynamic measurement, the advancing and receding contact angles of the drop
rolling off can also be determined. The roll-off angle plays a role when evaluating, for example, easy-to-
clean or anti-adherent surfaces.
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, Paints and varnishes — Vocabulary
ISO 19403-1, Paints and varnishes — Wettability — Part 1: Vocabulary and general principles
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 4618 and ISO 19403-1 and the
following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
roll-off angle
α
s
tipping of the surface of the solid body, due to which a liquid drop put down onto this surface rolls off
3.2
advancing contact angle
advancing angle
θ
a
contact angle measured at the three-phase line during advancing the liquid phase
[SOURCE: ISO 19403-6:—, 3.2]
oSIST prEN ISO 19403-7:2023
ISO/DIS 19403-7:2023(E)
3.3
advancing contact angle
advancing angle
θ
a
contact angle measured at the three-phase line during advancing the liquid phase
[SOURCE: ISO 19403-6:—, 3.3]
4 Principle
A drop is put down onto the surface to be tested. The surface is tipped with constant inclination speed
until the drop rolls off. The advancing and receding contact angles are determined from the time curve
of the left and right three-phase point.
5 Apparatus and materials
Ordinary laboratory apparatus, t
...