EN ISO 7784-2:2023
(Main)Paints and varnishes - Determination of resistance to abrasion - Part 2: Method with abrasive rubber wheels and rotating test specimen (ISO 7784-2:2023)
Paints and varnishes - Determination of resistance to abrasion - Part 2: Method with abrasive rubber wheels and rotating test specimen (ISO 7784-2:2023)
This document specifies a method for determining the resistance to abrasion of coatings, for which two loaded, freely rotatable but eccentrically arranged abrasive rubber wheels affect the coating of the rotating test specimen.
Beschichtungsstoffe - Bestimmung des Abriebwiderstandes - Teil2: Verfahren mit Reibrädern aus Gummi und rotierender Probe (ISO 7784-2:2023)
Peintures et vernis - Détermination de la résistance à l'abrasion - Partie 2: Méthode utilisant des roues abrasives en caoutchouc et une éprouvette rotative (ISO 7784-2:2023)
Le présent document spécifie une méthode permettant de déterminer la résistance à l’abrasion des revêtements en appliquant deux roues abrasives en caoutchouc qui sont chargées et qui tournent librement, mais de manière excentrée sur le revêtement de l’éprouvette rotative.
Barve in laki - Ugotavljanje odpornosti proti obrabi - 2. del: Metoda z abrazivno gumo na vrteči plošči in rotirajočimi preskušanci (ISO 7784-2:2023)
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Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN ISO 7784-2:2022
01-junij-2022
Barve in laki - Ugotavljanje odpornosti proti obrabi - 2. del: Metoda z abrazivno
gumo na vrteči plošči in rotirajočimi preskušanci (ISO/DIS 7784-2:2022)Paints and varnishes - Determination of resistance to abrasion - Part 2: Method with
abrasive rubber wheels and rotating test specimen (ISO/DIS 7784-2:2022)Beschichtungsstoffe - Bestimmung des Abriebwiderstandes - Teil 2: Verfahren mit
Reibrädern aus Gummi und rotierender Probe (ISO/DIS 7784-2:2022)
Peintures et vernis - Détermination de la résistance à l'abrasion - Partie 2: Méthode
utilisant des roues abrasives en caoutchouc et une éprouvette rotative (ISO/DIS 7784-
2:2022)Ta slovenski standard je istoveten z: prEN ISO 7784-2
ICS:
87.040 Barve in laki Paints and varnishes
oSIST prEN ISO 7784-2:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN ISO 7784-2:2022
DRAFT INTERNATIONAL STANDARD
ISO/DIS 7784-2
ISO/TC 35/SC 9 Secretariat: BSI
Voting begins on: Voting terminates on:
2022-04-29 2022-07-22
Paints and varnishes — Determination of resistance to
abrasion —
Part 2:
Method with abrasive rubber wheels and rotating test
specimen
Peintures et vernis — Détermination de la résistance à l'abrasion —
Partie 2: Méthode utilisant des roues abrasives en caoutchouc et une éprouvette rotative
ICS: 87.040This 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.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 7784-2:2022(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 2022
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oSIST prEN ISO 7784-2:2022
ISO/DIS 7784-2:2022(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2022
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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Published in Switzerland
© ISO 2022 – All rights reserved
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oSIST prEN ISO 7784-2:2022
ISO/DIS 7784-2:2022(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 ............................................................................................................................................................................3
6 Test specimens ....................................................................................................................................................................................................... 5
6.1 Preparation of test specimens .................................................................................................................................................. 5
6.2 Film thickness ......................................................................................................................................................................................... 5
6.3 Conditioning.............................................................................................................................................................................................. 5
7 Procedure ....................................................................................................................................................................................................................5
7.1 Agreements ............................................................................................................................................................................................... 5
7.2 Preparation of the abrasive wheels ..................................................................................................................................... 6
7.3 Test conditions ........................................................................................................................................................................................ 6
7.4 Number of determinations .......................................................................................................................................................... 6
7.5 Test procedure ........................................................................................................................................................................................ 6
8 Evaluation ................................................................................................................................................................................................................... 6
9 Precision ....................................................................................................................................................................................................................... 7
10 Test report .................................................................................................................................................................................................................. 7
Bibliography ................................................................................................................................................................................................................................ 8
iii© ISO 2022 – All rights reserved
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oSIST prEN ISO 7784-2:2022
ISO/DIS 7784-2:2022(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 [or Project Committee] ISO/TC 35, Paints and
varnishes, Subcommittee SC 9, General test methods for paints and varnishes.This third edition cancels and replaces the second edition (ISO 7784-2:2016), which has been technically
revised.The main changes are as follows:
— Figures 1 and 2 have been updated;
— some measures in 5.2 and in the note to 5.3 have been updated;
— the text has been editorially revised and the normative references have been updated.
A list of all parts in the ISO 7784 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.© ISO 2022 – All rights reserved
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oSIST prEN ISO 7784-2:2022
ISO/DIS 7784-2:2022(E)
Introduction
This document is one of the three parts of ISO 7784 dealing with test methods for the determination
of the resistance to abrasion of coatings using abrasive wheels. The characteristics and differences of
these methods are summarized in Table 1.Table 1 — Types of method
Abrasive wheel
Test specimen
Standard
movement
Type Degree of freedom
Abrasive paper on
ISO 7784-1
rubber wheel
Freely rotatable Rotation
ISO 7784-2 Abrasive rubber wheel
Rigid – with
Abrasive paper on
ISO 7784-3 stroke-dependent Linear reciprocation
metal wheel
rotation
A mechanism rotates the abrasive wheel by a small angle after each double stroke so that a new area of the abrasive
paper is effective.The methods using abrasive-paper covered wheels (ISO 7784-1 and ISO 7784-3) are preferably to be
applied.© ISO 2022 – All rights reserved
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oSIST prEN ISO 7784-2:2022
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oSIST prEN ISO 7784-2:2022
DRAFT INTERNATIONAL STANDARD ISO/DIS 7784-2:2022(E)
Paints and varnishes — Determination of resistance to
abrasion —
Part 2:
Method with abrasive rubber wheels and rotating test
specimen
1 Scope
This doc
...
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