SIST EN ISO 2812-1:1997
(Main)Paints and varnishes - Determination of resistance to liquids - Part 1: General methods (ISO 2812-1:1993)
Paints and varnishes - Determination of resistance to liquids - Part 1: General methods (ISO 2812-1:1993)
This international standard specifies a procedure for the comprehensive determination of the resistance to water immersion of a paint or paint system.
Lacke und Anstrichstoffe - Bestimmung der Beständigkeit gegen Flüssigkeiten - Teil 1: Allgemeine Verfahren (ISO 2812-1:1993)
Dieser Teil von ISO 2812 gehört zu einer Reihe von Normen, welche die Probenahme und die Prüfung von Lacken, Anstrichstoffen und ähnlichen Beschichtungsstoffen behandelt. Er legt allgemeine Verfahren für die Bestimmung der Beständigkeit einer einzelnen Schicht oder eines Mehrschichtsystems aus Lacken, Anstrichstoffen oder ähnlichen Beschichtungsstoffen gegen die Einwirkung von Flüssigkeiten fest.
Peintures et vernis - Détermination de la résistance aux liquides - Partie 1: Méthodes générales (ISO 2812-1:1993)
Barve in laki - Določanje odpornosti proti tekočinam - 1. del: Splošne metode (ISO 2812-1:1993)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 2812-1:1997
01-december-1997
%DUYHLQODNL'RORþDQMHRGSRUQRVWLSURWLWHNRþLQDPGHO 6SORãQHPHWRGH ,62
Paints and varnishes - Determination of resistance to liquids - Part 1: General methods
(ISO 2812-1:1993)
Lacke und Anstrichstoffe - Bestimmung der Beständigkeit gegen Flüssigkeiten - Teil 1:
Allgemeine Verfahren (ISO 2812-1:1993)
Peintures et vernis - Détermination de la résistance aux liquides - Partie 1: Méthodes
générales (ISO 2812-1:1993)
Ta slovenski standard je istoveten z: EN ISO 2812-1:1994
ICS:
87.040 Barve in laki Paints and varnishes
SIST EN ISO 2812-1:1997 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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INTERNATIONAL
IS0
STANDARD
2812-l
First edition
1993-03-01
Paints and varnishes - Determination of
resistance to liquids -
Part 1:
General methods
Pein tures et vernis - D6termination de la r&istance aux liquides -
Partie 1: M&hodes g&Wales
Reference number
IS0 2812-l :1993(E)
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IS0 2812=1:1993(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, governmental
and non-governmental, in liaison with ISO, also take part in the work. IS0
collaborates closely with the International Electrotechnical Commission
(I EC) 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 International
Standard requires approval by at least 75 % of the member bodies casting
a vote.
International Standard IS0 2812-l was prepared by Technical Committee
lSO/TC 35, Paints and varnishes, Sub-Committee SC 9, General test
methods for paints and varnishes.
IS0 2812 consists of the following parts, under the general title Paints and
varnishes - Determination of resistance to liquids:
- Part I: General methods
- Part 2: Water immersion method
This part of IS0 2812 cancels and replaces IS0 2812:1974, of which it
constitutes an editorial and minor technical revision.
Annex A forms an integral part of this part of IS0 2812.
0 IS0 1993
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 per-
mission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-1211 Geneve 20 l Switzerland
Printed in Switzerland
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IS0 2812=1:1993(E)
INTERNATIONAL STANDARD
Paints and varnishes - Determination of resistance to
liquids -
Part 1:
General methods
IS0 15 12: 1991, Paints and varnishes - Sampling of
1 Scope
products in liquid or paste form.
IS0 1513:1992, Paints and varnishes - Examination
1.1 This part of IS0 2812 is one of a series of stan-
and preparation of samples for testing.
dards dealing with the sampling and testing of paints,
varnishes and related products.
IS0 1514: -l), Paints and varnishes - Standard pan-
els for testing.
It specifies general methods for determining the re-
sistance of a single-coat film or a multi-coat system
IS0 2808: 1991, Paints and varnishes - De termi-
of paints or related products to the action of liquids.
nation of film thickness.
Three methods of test are specified. The method to
IS0 4628-2:1982, Paints and varnishes - Evaluation
be used depends on the particular requirements of
of degradation of paint coatings - Designation of in-
the test material. Method 1 is intended for more re-
tensity, quantity and size of common types of defect
sistant coatings requiring longer periods of exposure
- Part 2: Designation of degree of blistering.
than those which may be tested by method 2 or
method 3.
1.2 The methods enable the effect of the test liquid
3 Principle
on the coating and, where necessary, deterioration of
the substrate, to be assessed.
A coated test panel is exposed to a liquid by one of
three specified methods, as appropriate, and the ef-
fects of exposure are evaluated by criteria agreed in
advance between the interested parties, these criteria
2 Normative references
usually being of a subjective nature.
The following standards contain provisions which,
through reference in this text, constitute provisions
of this part of IS0 2812. At the time of publication, the
editions indicated were valid. All standards are subject
4 Required supplementary information
to revision, and parties to agreements based on this
part of IS0 2812 are encouraged to investigate the
possibility of applying the most recent editions of the For any particular application, the test methods
standards indicated below. Members of IEC and IS0 specified in this part of IS0 2812 need to be com-
maintain registers of currently valid International pleted by supplementary information. The items of
Standards. supplementary information are given in annex A.
1) To be published. (Revision of IS0 1514:1984)
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IS0 2812=1:1993(E)
6.3 Drying
5 Sampling
Dry (or stove) and age (if applicable) each coated test
Take a representative sample of the product to be
piece for the specified time and, unless otherwise
tested (or of each product in the case of a multi-coat
condition them at a temperature of
specified,
system), as described in IS0 1512.
(23 & 2) “C and a relative humidity of (50 + 5) % for
Examine and prepare each sample for testing, as de-
at least 16 h. The appropriate test procedure shall
scribed in IS0 1513.
then be carried out as soon as possible.
6.4 Thickness of coating
6 Test pieces
Determine the thickness, in micrometres, of the dried
coating by one of the procedures specified in
6.1 Materials and dimensions
IS0 2808.
6.1.1 Panels
7 Method 1 (immersion method)
Unless otherwise specified or agreed, the test panels
shall be of steel, tinplate, aluminium or glass comply-
ing with IS0 1514, and of approximate dimensions
7.1 Materials required
‘I 50 mm x 100 mm x (0,75 to 1,25) mm.
7.1.1 Test liquid, as specified.
6.1.2 Rods (for method 1 only)
One end of each rod shall be rounded to approxi- 7.2 Temperature of test
mately the radius of the rod itself. Unless otherwise
specified, the rod shall be of steel.
Carry out the test at a temperature of (23 & 2) “C,
unless otherwise agreed.
NOTES
ions for the rods are 150 mm long x
Suitable dimens
7.3 Precautions to be taken
15 mm in diameter.
It is preferable to immerse the test pieces individually
2 The use of rods for method 1 is to eliminate edge ef-
in the test liquid, particularly when using liquids of
fects.
high electrical conductivity in which electrolytic ef-
fects could be of some importance. If immersion of
several test pieces in a single tank is more con-
6.2 Preparation and coating
venient, the nature of the test pieces shall be identical
and every precaution shall be taken to ensure that the
6.2.1 Test panels
test liquid is unaffected by the test pieces.
Unless otherwise specified, prepare each test panel
The test pieces shall be at least 30 mm from the
in accordance with IS0 1514 and then coat it by the
sides of the tank and, if several pieces are immersed
specified method with the product or system under
in the same tank, they shall be at least 30 mm apart.
test.
The test pieces shall be electrically insulated from
their supports.
NOTE 3 For method 1, it is normally preferable to paint
both faces of the panel and to protect the edges. It will be
necessary to specify whether the back of the panel is to be
7.4 Procedure A (using a single-phase liquid)
coated with a suitable protective paint or whether both
sides of the panel are to be coated with the product or
Carry out the procedure in triplicate, unless otherwise
system under test.
agreed.
If specified, seal the edges of the test panel by suit-
able means, after coating with the product or system 7.4.1 Place a sufficient amount of the test liquid
under test. (7.1 .l) in a suitable vessel to immerse completely or
partially the test piece (rod or panel) as specified.
Keep the test piece in an approximately vertical pos-
6.2.2 Rods
ition using suitable supports if necessary.
Prepare each rod as specified and then coat it by the
specified method with the product or system under 7.4.2 Cover the container for the duration of the test
test. to minimize loss of liquid by evaporation or splashing.
2
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IS0 2812=1:1993(E)
7.4.3 If specified, aer
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