Paints and varnishes - Wettability - Part 7: Measurement of the contact angle on a tilt stage (roll-off angle) (ISO 19403-7:2017)

ISO 19403-7:2017 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 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.

Beschichtungsstoffe - Benetzbarkeit - Teil 7: Messung des Kontaktwinkels bei Neigetischexperimenten (Abrollwinkel) (ISO 19403-7:2017)

Peintures et vernis - Mouillabilité - Partie 7: Mesurage de l'angle de contact sur un plan incliné (angle d'écroulement) (ISO 19403-7:2017)

Le présent document spécifie une méthode de mesure dynamique de l'angle de roulement d'une goutte de liquide sur une surface solide. Il est également possible, dans un mesurage dynamique, de déterminer l'angle d'avancée et l'angle de recul de la goutte qui roule. L'angle de roulement joue un rôle dans l'évaluation, par exemple, de surfaces anti-adhérentes ou à nettoyage facile.

Barve in laki - Omočljivost - 7. del: Merjenje stičnega kota na nagnjeni površini (kot tečenja) (ISO 19403-7:2017)

General Information

Status
Published
Publication Date
11-Feb-2020
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
12-Feb-2020
Completion Date
12-Feb-2020

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SLOVENSKI STANDARD
SIST EN ISO 19403-7:2020
01-april-2020

Barve in laki - Omočljivost - 7. del: Merjenje stičnega kota na nagnjeni površini

(kot tečenja) (ISO 19403-7:2017)

Paints and varnishes - Wettability - Part 7: Measurement of the contact angle on a tilt

stage (roll-off angle) (ISO 19403-7:2017)
Beschichtungsstoffe - Benetzbarkeit - Teil 7: Messung des Kontaktwinkels bei
Neigetischexperimenten (Abrollwinkel) (ISO 19403-7:2017)

Peintures et vernis - Mouillabilité - Partie 7: Mesurage de l'angle de contact sur un plan

incliné (angle d'écroulement) (ISO 19403-7:2017)
Ta slovenski standard je istoveten z: EN ISO 19403-7:2020
ICS:
87.040 Barve in laki Paints and varnishes
SIST EN ISO 19403-7:2020 en,fr,de

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

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SIST EN ISO 19403-7:2020
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SIST EN ISO 19403-7:2020
EN ISO 19403-7
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2020
EUROPÄISCHE NORM
ICS 01.040.87
English Version
Paints and varnishes - Wettability - Part 7: Measurement
of the contact angle on a tilt stage (roll-off angle) (ISO
19403-7:2017)

Peintures et vernis - Mouillabilité - Partie 7: Mesurage Beschichtungsstoffe - Benetzbarkeit - Teil 7: Messung

de l'angle de contact sur un plan incliné (angle des Kontaktwinkels bei Neigetischexperimenten

d'écroulement) (ISO 19403-7:2017) (Abrollwinkel) (ISO 19403-7:2017)
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 19403-7:2020 E

worldwide for CEN national Members.
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SIST EN ISO 19403-7:2020
EN ISO 19403-7:2020 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

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SIST EN ISO 19403-7:2020
EN ISO 19403-7:2020 (E)
European foreword

The text of ISO 19403-7:2017 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

EN ISO 19403-7:2020 by Technical Committee CEN/TC 139 “Paints and varnishes” the secretariat of

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 19403-7:2017 has been approved by CEN as EN ISO 19403-7:2020 without any

modification.
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SIST EN ISO 19403-7:2020
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SIST EN ISO 19403-7:2020
INTERNATIONAL ISO
STANDARD 19403-7
First edition
2017-06
Paints and varnishes — Wettability —
Part 7:
Measurement of the contact angle on a
tilt stage (roll-off angle)
Peintures et vernis — Mouillabilité —
Partie 7: Mesurage de l’angle de contact sur un plan incliné (angle
d’écroulement)
Reference number
ISO 19403-7:2017(E)
ISO 2017
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SIST EN ISO 19403-7:2020
ISO 19403-7:2017(E)
COPYRIGHT PROTECTED DOCUMENT
© 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

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 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2017 – All rights reserved
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SIST EN ISO 19403-7:2020
ISO 19403-7:2017(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................................................................................................................................................................... 5

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

© ISO 2017 – All rights reserved iii
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SIST EN ISO 19403-7:2020
ISO 19403-7:2017(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
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SIST EN ISO 19403-7:2020
ISO 19403-7:2017(E)
Introduction

Dynamic contact angles describe the processes on the interface liquid/solid during volume increase

(advancing angle) or volume decrease (receding angle) of a drop in horizontal position. As an alternative

to the static method (see ISO 19403-2), for the advancing angle always a surface area is wetted, which

was previously unwetted. For the receding angle, the contact angle during dewetting is observed. From

the difference between advancing angle and receding angle, information on chemical homogeneity and

roughness can be concluded. The receding angle is not suitable for the determination of the surface energy.

© ISO 2017 – All rights reserved v
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SIST EN ISO 19403-7:2020
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SIST EN ISO 19403-7:2020
INTERNATIONAL STANDARD ISO 19403-7:2017(E)
Paints and varnishes — Wettability —
Part 7:
Measurement of the contact angle on a tilt stage (roll-off
angle)
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 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 — Terms and definitions

ISO 19403-1, Paints and varnishes — Wettability — Part 1: Terminology and general principles

3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 4618, ISO 19403-1 and the

following apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at http:// www .electropedia .org/
— ISO Online browsing platform: available at http:// www .iso .org/ obp
3.1
roll-off angle

tipping of the surface of the solid body, due to which a liquid drop put down onto this surface rolls off

3.2
advancing angle
contact angle, which is measured during advancing of the three-phase point

Note 1 to entry: Generally, the advancing angle is used for the determination of the interface energy, in which

case the measurement should be carried out close to the thermodynamic equilibrium. This is approximately

reached if there is no
...

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