EN ISO 2409:1994
(Main)Paints and varnishes - Cross-cut test (ISO 2409:1992)
Paints and varnishes - Cross-cut test (ISO 2409:1992)
This international standard describes a test method for assessing the resistance of paint coatings to separation from substrates when a right-angle lattice pattern is cut into the coating, penetrating through the substrate.
Lacke und Anstrichstoffe - Gitterschnittprüfung (ISO 2409:1992)
Diese internationale Norm gehört zu einer Reihe von Normen, welche die Probenahme und die Prüfung von Lacken, Anstrichstoffen und ähnlichen Produkten behandelt. Sie legt ein Prüfverfahren zur Abschätzung des Widerstandes einer Beschichtung gegen Trennung vom Untergrund fest, wenn ein bis zum Untergrund durchgehendes Gitter in die Beschichtung geschnitten wird. Die nach diesem empirischen Verfahren gemessene Eigenschaft hängt, neben anderen Faktoren, von der Haftung der Beschichtung auf der vorhergehenden Schicht oder auf dem Untergrund ab.
Peintures et vernis - Essai de quadrillage (ISO 2409:1992)
Donne les informations et les directives pour préparer les
spécifications particulières des connecteurs h.f. BMA ainsi que la
spécification particulière cadre.
Prescrit également les dimensions des faces d'accouplement pour
connecteurs d'usage général, les dimension des connecterus d'essai
normalisés de niveau 0, les informations sur les calibres et les
essais issues de la QC 220000 (CEI 61169-1) applicables à toutes les
spécifications particulières pour les connecteurs BMA.
Barve in laki - Preskus oprijema z zarezovanjem rešetke (ISO 2409:1992)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 2409:1997
01-december-1997
Barve in laki - Preskus oprijema z zarezovanjem rešetke (ISO 2409:1992)
Paints and varnishes - Cross-cut test (ISO 2409:1992)
Lacke und Anstrichstoffe - Gitterschnittprüfung (ISO 2409:1992)
Peintures et vernis - Essai de quadrillage (ISO 2409:1992)
Ta slovenski standard je istoveten z: EN ISO 2409:1994
ICS:
87.040 Barve in laki Paints and varnishes
SIST EN ISO 2409:1997 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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IS0
INTERNATIONAL
STANDARD 2409
Second edition
1992-08-l 5
Paints and varnishes - Cross-cut test
- Essai de quadrillage
Peintures et vernis
Reference number
IS0 2409: 1992(E)
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IS0 2409:1992(E)
Foreword
IS0 (the International Organization for Standardization) is a worldwide
federation of national standards bodies (IS0 member bodies). The work
of preparing International Standards is normally carried out through IS0
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, govern-
mental and non-governmental, in liaison with ISO, also take part in the
work. IS0 collaborates closely with the International Electrotechnical
Commission (IEC) on all matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are
circulated to the member bodies for voting. Publication as an lnter-
national Standard requires approval by at least 75 % of the member
bodies casting a vote.
International Standard IS0 2409 was prepared by Technical Committee
ISO/TC 35, Paints and varnishes, Sub-Committee SC 9, General test
methods for paints and varnishes.
This second edition cancels and replaces the first edition
(IS0 2409:1972), which has been technically revised. The main technical
changes in this second edition are that, in the procedure, the spacing
of the cuts is prescribed, depending on the thickness of the coating and
the type of substrate, and that for hard substrates application of ad-
hesive tape has been added.
Annex A forms an integral part of this International Standard.
0 IS0 1992
All rights reserved. No part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without
permission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-1211 Genkve 20 l Switzerland
Printed in Switzerland
ii
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IS0 2409:1992(E)
INTERNATIONAL STANDARD
Paints and varnishes - Cross-cut test
NOTES
1 Scope
2 Coatings with a total thickness of over 250 llrn may be
tested by means of a single cross-cut.
1.1 This International Standard is one of a series
of standards dealing with the sampling and testing 3 The method, when applied to coatings designed to give
a rough patterned surface, will give results which will
of paints, varnishes and related products. It specifies
show too much variation.
a test method for assessing the resistance of paint
coatings to separation from substrates when a
right-angle lattice pattern is cut into the coating,
penetrating through to the substrate. The property
measured by this empirical test procedure depends,
among other factors, on the adhesion of the coating
2 Normative references
to either the preceding coat or the substrate. This
procedure is not to be regarded, however, as a
The following standards contain provisions which,
means of measuring adhesion.
through reference in this text, constitute provisions
of this International Standard. At the time of publi-
Where a measurement of adhesion is required, at-
cation, the editions indicated were valid. All stan-
tention is drawn to the method described in
dards are subject to revision, and parties to
IS0 4624:1978, Paints and varnishes - Pull-off test
agreements based on this International Standard
for adhesion.
are encouraged to investigate the possibility of ap-
plying the most recent editions of the standards in-
NOTE 1
Although the test is primarily intended for use
dicated below. Members of IEC and IS0 maintain
in the laboratory, the test is also suitable for field testing.
registers of currently valid International Standards.
IS0 1512:1991, Paints and varnishes - Sampling of
I.2 The method described may be applied either
products in liquid or paste form.
as a pass/fail test or, where circumstances are ap-
propriate, as a six-step classification test (see 8.3).
IS0 1513:- ‘1, Paints and varnishes - Examination
When applied to a multi-coat system, assessment
and preparation of samples for testing.
of the resistance to separation of individual layers
of the coating from each other may be made.
*), Paints and varnishes - Standard pan-
IS0 1514:-
els for testing.
1.3 The test may be carried out on finished objects
IS0 2808:1991, Paints and varnishes - Determination
and/or on specially prepared test specimens.
of film thickness.
Although the method is applicable to paint on hard
IS0 3270:1984, Paints and varnishes and their raw
(steel) and soft (wood and plaster) substrates, these
materials - Temperatures and humidities for con-
different substrates need a different test procedure
ditioning and testing.
(see clause 7).
IEC 454-2: 1974, Specifications for pressure-sensitive
The method is not suitable for coatings of total
thickness greater than 250 pm or for textured adhesive tapes for e/ectricaI purposes - Part 2:
coatings. Methods of test.
1) To be published. (Revision of IS0 1513:1980)
2) To be published. (Revision of IS0 1514:1984)
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IS0 2409:1992(E)
5 Sampling
3 Required supplementary information
For any particular application, the test method Take a representative sample of the product to be
specified in this International Standard needs to be tested, as described in ISO 1512.
completed by supplementary information. The items
Examine and prepare each sample for testing, as
of supplementary information are given in annex A.
described in IS0 1513.
4 Apparatus
6 Test panels
Ordinary laboratory apparatus, together with the
following:
6.1 Substrate
4.1 Cutting tool.
Unless otherwise agreed, select the substrate from
It is particularly important to ensure that the cutting
one of those described in IS0 1514.
tool has a defined shape and that the cutting edges
are in good condition. The panels shall be plane and free from distortion.
The dimensions shall be such as to allow the test to
be carried out at three different positions being not
4.1.1 Suitable tools are listed below and shown in
less than 5 mm from each other and from an edge
\
figures 1 a) and 1 b):
of the panel.
a) single-blade cutting tool with 20° to 30° edge and
Where panels consist of a relatively soft material
other dimensions as specified in figure 1 a);
such as wood, the minimum thickness shall be
10 mm. Where panels consist of a hard material, the
b) multi-blade cutting tool with six cutting edges
minimum thickness shall be 0,25 mm.
spaced 1 mm or 2 mm apart.
NOTES
The single-blade cutting tool is the preferred tool in
panels, measur ing approxima tely
all cases, i.e. with all kinds of coating on both hard 4 Rectangular
to be convenient
150 mm x 100 mm, have been found
and soft substrates. The multi-blade cutting tool is
not suitable for thick (> 120 pm) or hard coatings
5 In cases where the panel is made of wood, the direc-
or where the coating is applied over soft substrates.
tion and the structure of the grain may influence the test,
and a pronounced grain will render the evaluation im-
possible.
4.1.2 The tools specified in 4.1.1 are suitable for
manual use and, although this is the more usual
method of use, the tool may be mounted on a
motor-driven apparatus which gives more uniform 6.2 Preparation and coating
cutting. The application of the latter procedure shall
be subject to agreement between the interested
Unless otherwise agreed, prepare each test panel
parties.
in accordance with IS0 1514 and then coat it by the
specified method with the product or system under
test.
4.2 Guiding and spacing edges.
In order to space the cuts correctly, a series of
6.3 Drying
guiding and spacing edges is necessary when using
a single-blade cutting tool. A suitable apparatus is
Dry (or stove) and age (if applicable) each coated
shown in figure2.
test panel for the specified time and under the
specified conditions.
4.3 Soft brush.
6.4 Thickness of coating
4.4 Transparent pressure-sensitive adhesive tape,
25 mm wide, with an adhesion strength of
Determine the thickness, in micrometres, of the
(IO + 1) N per 25 mm width when tested in accord-
dried coating by one of the procedures specified in
ance with IEC 454-2.
IS0 2808. Make the measurement at, or as near as
possible to, the positions at which the cross-cut is
4.5 Viewing lens, hand-held, with a magnification to be made. The number of thickness determinations
is dependent on the method used.
...
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