Paints and varnishes - Wettability - Part 1: Vocabulary and general principles (ISO/FDIS 19403-1:2022)

This document specifies general terms and definitions for wettability. Some general principles are described in Annex A. This document is intended to be used in conjunction with ISO 4618.

Beschichtungsstoffe - Benetzbarkeit - Teil 1: Begriffe und allgemeine Grundlagen (ISO/FDIS 19403-1:2022)

Dieses Dokument legt allgemeine Begriffe zur Benetzbarkeit fest. Einige allgemeine Grundlagen sind im Anhang A erläutert.

Peintures et vernis - Mouillabilité - Partie 1: Vocabulaire et principes généraux (ISO/FDIS 19403-1:2022)

Le présent document spécifie les termes et définitions génériques relatifs à la mouillabilité. Quelques principes généraux sont décrits à l’Annexe A. Le présent document est destiné à être utilisé conjointement avec l'ISO 4618.

Barve in laki - Omočljivost - 1. del: Terminologija in splošna načela (ISO/FDIS 19403-1:2022)

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SLOVENSKI STANDARD
oSIST prEN ISO 19403-1:2021
01-september-2021

Barve in laki - Omočljivost - 1. del: Terminologija in splošna načela (ISO/DIS 19403-

1:2021)

Paints and varnishes - Wettability - Part 1: Terminology and general principles (ISO/DIS

19403-1:2021)
Beschichtungsstoffe - Benetzbarkeit - Teil 1: Begriffe und allgemeine Grundlagen
(ISO/DIS 19403-1:2021)

Peintures et vernis - Mouillabilité - Partie 1: Terminologie et principes généraux (ISO/DIS

19403-1:2021)
Ta slovenski standard je istoveten z: prEN ISO 19403-1
ICS:
01.040.87 Industrija barv (Slovarji) Paint and colour industries
(Vocabularies)
87.040 Barve in laki Paints and varnishes
oSIST prEN ISO 19403-1:2021 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN ISO 19403-1:2021
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oSIST prEN ISO 19403-1:2021
DRAFT INTERNATIONAL STANDARD
ISO/DIS 19403-1
ISO/TC 35/SC 9 Secretariat: BSI
Voting begins on: Voting terminates on:
2021-07-27 2021-10-19
Paints and varnishes — Wettability —
Part 1:
Terminology and general principles
Peintures et vernis — Mouillabilité —
Partie 1: Terminologie et principes généraux
ICS: 01.040.87; 87.040
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
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BEING ACCEPTABLE FOR INDUSTRIAL,
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STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
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WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 19403-1:2021(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 2021
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oSIST prEN ISO 19403-1:2021
ISO/DIS 19403-1:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021

All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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.
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ii © ISO 2021 – All rights reserved
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oSIST prEN ISO 19403-1:2021
ISO/DIS 19403-1:2021(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 General principles ............................................................................................................................................................................................... 5

4.1 Principles for the determination of the surface free energy ........................................................................... 5

4.2 Principles for the measurement of the surface tension at the pendant drop ................................... 7

Bibliography .............................................................................................................................................................................................................................10

© ISO 2021 – All rights reserved iii
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oSIST prEN ISO 19403-1:2021
ISO/DIS 19403-1:2021(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.

This second edition cancels and replaces the first edition (ISO 19403-1:2017), which has been technically

revised.
The main changes compared to the previous edition are as follows:
— Figure 1 and Figure 2 have been improved;
— the designation of the X-axis in Figure 3 has been corrected;
— the derivation of Formula (4) has been improved;
— Formula (6) has been corrected.
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 © ISO 2021 – All rights reserved
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oSIST prEN ISO 19403-1:2021
DRAFT INTERNATIONAL STANDARD ISO/DIS 19403-1:2021(E)
Paints and varnishes — Wettability —
Part 1:
Terminology and general principles
1 Scope
The ISO 19403 series specifies optical test methods
— for the measurement of the contact angle,

— for the determination of the free surface energy of a solid surface, including the polar and dispersive

fractions,

— for the determination of the surface tension of liquids, including the polar and dispersive fractions,

and
— for the checking of the measurement arrangement with reference materials.

It can be applied for the characterization of substrates, coatings and coating materials.

The applicability can be restricted for liquids with non-Newtonian rheology .

This document specifies terms and definitions and defines the general principles.

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 — Terms and definitions
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 4618 and the following apply.

ISO and IEC maintain terminological 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 Determination of the surface free energy
3.1.1
chemical homogeneity
chemically homogeneous composition of a surface to be examined

Note 1 to entry: The definition regards a purely qualitative assessment of the surface. Regarding the

measurement of the contact angle, a surface is considered chemically and topologically sufficiently homogeneous

if no significant differences of the contact angles can be determined when measuring on several areas on the

surface. The significance limits can be specified by the user in accordance with standard laboratory methods.

1) This term is defined in DIN 1342-1.
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ISO/DIS 19403-1:2021(E)
3.1.2
topological homogeneity
uniformity of the macroscopic surface, including evenness and smoothness

Note 1 to entry: The definition regards a purely qualitative assessment of the surface. Regarding the

measurement of the contact angle, a surface is considered chemically and topologically sufficiently homogeneous

if no significant differences of the contact angles can be determined when measuring on several areas on the

surface. The significance limits can be specified by the user in accordance with standard laboratory methods.

3.1.3
interfacial free energy
interfacial tension
energy or tension resulting from intermolecular forces on interfaces

Note 1 to entry: The term interfacial energy pertains to the interaction with solid surfaces and is indicated as

free energy in relation to the surface (unit mJ/m ). The term interfacial tension pertains to the interaction with

liquids and is indicated as force per length unit (mN/m). The respective indices “l” for “liquid” and “s” for “solid”

indicate the phases involved.
3.1.4
surface free energy
free energy of the surface
interfacial free energy (3.1.3) of a solid surface
3.1.5
surface tension
interfacial tension of a liquid surface

Note 1 to entry: The surface tension is indicated as force per unit length (mN/m). Its numerical value corresponds

to the free energy of the interface or surface.

Note 2 to entry: The surface tension corresponds to the work which shall be done in order to enlarge a given

surface by a specific value.

Note 3 to entry: If the liquid of a droplet is in equilibrium with its vapour phase, then the surface tension is

thermodynamically defined.
3.1.6
interfacial energy

energy on the phase interface between a solid and a liquid phase

3.1.7
three-phase point
contact point

point at which solid phase, liquid phase and vapour phase are in contact with each other

Note 1 to entry: See Figure 2.
3.1.8
base line

straight or curved line at the interface between a solid and liquid phase which

connects the two three-phase points (3.1.7)
Note 1 to entry: See Figure 2.
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oSIST prEN ISO 19403-1:2021
ISO/DIS 19403-1:2021(E)
3.1.9
contact angle

angle to the base line (3.1.8) within the drop, formed by means of a tangent on the drop contour through

one of the three-phase points (3.1.7)
Note 1 to entry: See Figure 2.

Note 2 to entry: The contact angle is preferably indicated in degrees (°). 1° = (π/180)°.

...

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