ISO 6270:1980
(Main)Paints and varnishes — Determination of resistance to humidity (continuous condensation)
Paints and varnishes — Determination of resistance to humidity (continuous condensation)
Peinture et vernis — Détermination de la résistance à l'humidité (par condensation continue)
1.1 La présente Norme internationale spécifie une méthode de détermination de la résistance d'un feuil de peinture, de systèmes de peinture et de produits assimilés à des conditions de forte humidité. 1.2 La méthode est applicable aux revêtements aussi bien sur subjectiles poreux, tels que le bois, le plâtre et les plaques de plâtre, que sur subjectiles non poreux, tels que le métal. Elle donne une indication sur la performance susceptible d'être obtenue dans des conditions sévères d'exposition et lorsqu'une condensation continue se produit à la surface. 1.3 Le mode opératoire peut faire apparaître des défectuosités du revêtement (comprenant cloquage, tachage, ramollissement, frisage, fragilisation) et une détérioration du subjectile.
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Standards Content (Sample)
International Standard
INTERNATIONAL ORGANIZATION FOR STANDARDlZATlON*MEWYHAPOAHAR OPrAHH3AUMR Il0 CTAHAAPTLl3AULlHWRGANlSATlON INTERNATIONALE DE NORMALISATION
Paints and varnishes - Determination of resistance to
humidity (continuous condensation)
Peintures et vernis - Détermination de la résistance à /'humidité (par condensation continue)
First edition - 1980-04-01
UDC 667.613 : 535.685
Ref. No. is0 6270-1980 (E)
Descriptors : paints, varnishes, tests, water vapour tests, test equipment.
Price based on 3 pages
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Foreword
IS0 (the International Organization for Standardization) is a worldwide federation of
national standards institutes (IS0 member bodies). The work of developing Inter-
national Standards is carried out through IS0 technical committees. Every member
body interested in a subject for which a technical committee has been set up 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.
Draft International Standards adopted by the technical committees are circulated to
the member bodies for approval before their acceptance as International Standards by
the IS0 Council.
International Standard IS0 6270 was developed by Technical Committee ISO/TC 35,
Paints and varnishes, and was circulated to the member bodies in May 1978.
It has been approved by the member bodies of the following countries :
Poland
Australia Iran
Austria Israel Romania
of
Brazil Italy South Africa, Rep.
Kenya Sweden
Bulgaria
Canada Korea, Rep. of Switzerland
Egypt, Arab Rep. of Mexico Turkey
Netherlands United Kingdom .
France
Germany, F. R. New Zealand USSR
India Norway
No member body expressed disapproval of the document.
O International Organization for Standardization, 1980 O
Printed in Switzerland
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INTERNATIONAL STANDARD IS0 6270-1980 (E)
Paints and varnishes - Determination of resistance to
h u m id ity (con t i n u ous con densat io n)
O Introduction
exposure where continuous condensation occurs on the sur-
face.
This International Standard is one of a series of standards deal-
ing with the sampling and testing of paints, varnishes and
1.3 The procedure may reveal failures of the coating (in-
related products. It should be read in conjunction with(
cluding blistering, staining, softening, wrinkling and embrittle-
IS0 1513, IS0 1514, IS0 2808 and IS0 3270.
IS0 1512,
ment) and deterioration of the substrate.
The method of test specified requires to be completed for any
particular application by the following supplementary informa-
2 References
tion. This information shall be derived from the International
Standard or national standard or other document for the pro-
IS0 1512, Paints and varnishes - Sampling.
duct under test or, if appropriate, shall be the subject of agree-
ment between the interested parties.
IS0 1513, Paints and varnishes - Examination andpreparation
of samples for testing.
a) Material, thickness and surface preparation of
su bstrate.
IS0 1514, Paints and varnishes - Standard panels for testing.
b) Method of application of test coating and details of
IS0 2808, Paints and varnishes - Determination of film
sealing of edges and backs of the test panels (if required).
thickness.
c) Thickness, in micrometres, of the dry coating, including
IS0 3270, Paints and varnishes and their raw materials -
method of measurement and whether it is a single coating
Atmospheres for conditioning and testing.
or a multicoat system.
d) Duration and conditions of drying of coated test panels
(or conditions of stoving and ageing, if applicable) before
3 Apparatus
testing.
3.1 The apparatus consists essentially of an electrically
e) Duration of test period, including whether the test
heated water bath, so constructed that the cover is formed by
period is to be interrupted at intervals (for example during
the blanking panels (see 3.5) or the test panels, the upper faces
weekends).
of which are exposed to the environment (see 3.2). It is
preferable for the apparatus to be so designed that it will ac-
f) When inspection of the test coating is to be carried out,
commodate test panels of size 150 mm x 100 mm.
including details of recovery period if applicable.
The apparatus shall be constructed of chemically inert material.
g) What characteristics of the test coating and substrate
are to be considered in evaluating the resistance properties
of the coating.
3.2 The water in the bath shall be maintained at 40 f 2 OC
and the apparatus shall be operated in a draught-free environ-
ment maintained at 23 f 2 OC.
1 Scope and field of application
3.3 The sides of the water bath shall be suitably insulated to
ensure that the temperature in the air-space, measured 25 mm
1 .I This International Standard specifies a method for deter-
below the test panels, is uniform, constant to within f
...
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