EN ISO 7783:2018
(Main)Paints and varnishes - Determination of water-vapour transmission properties - Cup method (ISO 7783:2018)
Paints and varnishes - Determination of water-vapour transmission properties - Cup method (ISO 7783:2018)
This document specifies a method for determining the water-vapour transmission properties of coatings of paints, varnishes and related products.
It supplements ISO 12572. As far as possible, the procedure, the definitions and the calculations have been taken over from ISO 12572. ISO 12572 can be consulted, if necessary, to obtain a better understanding of the procedure specified in this document.
Water-vapour transmission rates of more than 680 g/(m2⋅d) (i.e. water-vapour diffusion-equivalent air layer thicknesses, sd, of less than 0,03 m) are not accurately quantified by the test method described in this document.
Beschichtungsstoffe - Bestimmung der Wasserdampfdurchlässigkeit - Schalenverfahren (ISO 7783:2018)
Dieses Dokument legt ein Verfahren zum Bestimmen der Wasserdampfdurchlässigkeit von Beschichtungs-stoffen und ähnlichen Produkten fest.
Die Norm ergänzt ISO 12572. Soweit möglich, wurden das Verfahren, die Definitionen und die Berechnungen aus ISO 12572 übernommen. ISO 12572 kann bei Bedarf herangezogen werden, um das in dieser Norm spezifizierte Verfahren besser zu verstehen.
Eine Wasserdampf-Diffusionsstromdichte V von mehr als 680 g/(m2 ⋅ d) (d. h. eine wasserdampfdiffusions-äquivalente Luftschichtdicke sd unter 0,03 m) wird nach dem in diesem Dokument beschriebenen Prüf-verfahren nicht genau bestimmt
Peintures et vernis - Détermination des propriétés de transmission de la vapeur d'eau - Méthode de la coupelle (ISO 7783:2018)
Le présent document spécifie une méthode permettant de déterminer les propriétés de transmission de la vapeur d'eau des revêtements de peinture, vernis et produits assimilés.
Il complète l'ISO 12572. Le mode opératoire, les définitions et les calculs ont, dans la mesure du possible, été repris de l'ISO 12572. L'ISO 12572 peut être consultée, si nécessaire, pour mieux appréhender le mode opératoire spécifié dans le présent document.
Des coefficients de transmission de la vapeur d'eau supérieurs à 680 g/(m2⋅j) (c'est-à-dire des épaisseurs d'air équivalentes pour la diffusion de vapeur d'eau, sd, inférieures à 0,03 m) ne sont pas déterminés quantitativement avec exactitude par la méthode d'essai décrite dans le présent document.
Barve in laki - Ugotavljanje prepustnosti vodne pare - Metoda s čašo (ISO 7783:2018)
Ta dokument določa metodo za ugotavljanje prepustnosti vodne pare barvnih in lakirnih prevlek ter sorodnih premazov.
Dopolnjuje standard ISO 12572. Postopek, opredelitve in izračuni so bili v kar največji možni meri vzeti iz standarda ISO 12572. Če je potrebno, je standard ISO 12572 mogoče uporabiti za boljše razumevanje postopka iz tega dokumenta.
Hitrosti prepustnosti vodne pare, večje od 680 g/(m2⋅d) (tj. debeline zračnega sloja z ekvivalentno difuzijo vodne pare, sd, manjše od 0,03 m), niso natančno kvantificirane s preskusno metodo, ki je opisana v tem dokumentu.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2018
1DGRPHãþD
SIST EN ISO 7783:2012
%DUYHLQODNL8JRWDYOMDQMHSUHSXVWQRVWLYRGQHSDUH0HWRGDVþDãR ,62
Paints and varnishes - Determination of water-vapour transmission properties - Cup
method (ISO 7783:2018)
Beschichtungsstoffe - Bestimmung der Wasserdampfdurchlässigkeit - Schalenverfahren
(ISO 7783:2018)
Peintures et vernis - Détermination des propriétés de transmission de la vapeur d'eau -
Méthode de la coupelle (ISO 7783:2018)
Ta slovenski standard je istoveten z: EN ISO 7783:2018
ICS:
87.040 Barve in laki Paints and varnishes
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 7783
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2018
EUROPÄISCHE NORM
ICS 87.040 Supersedes EN ISO 7783:2011
English Version
Paints and varnishes - Determination of water-vapour
transmission properties - Cup method (ISO 7783:2018)
Peintures et vernis - Détermination des propriétés de Beschichtungsstoffe - Bestimmung der
transmission de la vapeur d'eau - Méthode de la Wasserdampfdurchlässigkeit - Schalenverfahren (ISO
coupelle (ISO 7783:2018) 7783:2018)
This European Standard was approved by CEN on 22 September 2018.
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, 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
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 7783:2018 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 7783:2018) has been prepared by Technical Committee ISO/TC 35 "Paints and
varnishes" in collaboration with 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 May 2019, and conflicting national standards shall be
withdrawn at the latest by May 2019.
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.
This document supersedes EN ISO 7783:2011.
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, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 7783:2018 has been approved by CEN as EN ISO 7783:2018 without any modification.
INTERNATIONAL ISO
STANDARD 7783
Second edition
2018-10
Paints and varnishes — Determination
of water-vapour transmission
properties — Cup method
Peintures et vernis — Détermination des propriétés de transmission
de la vapeur d'eau — Méthode de la coupelle
Reference number
ISO 7783:2018(E)
©
ISO 2018
ISO 7783:2018(E)
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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
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ii © ISO 2018 – All rights reserved
ISO 7783:2018(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 3
5 Apparatus and materials. 3
5.1 Substrate for non-self-supporting coatings . 3
5.2 Test cup . 3
5.3 Ammonium dihydrogen phosphate (NH H PO ) solution for wet-cup method . 4
4 2 4
5.4 Desiccant for dry-cup method . 4
5.5 Sealing material . 4
5.6 Test enclosure . 4
5.7 Balance . 4
6 Preparation for the test . 5
6.1 Sampling of coating material . 5
6.2 Preparation of test pieces . 5
6.2.1 Preparation of non-self-supporting coatings on a porous substrate . 5
6.2.2 Preparation of self-supporting coatings . 5
6.2.3 Conditioning . 5
6.3 Determination of the thickness of the coating. 6
6.3.1 General. 6
6.3.2 Determination of the thickness of the coating by calculation . 6
6.3.3 Determination of the thickness of the coating by optical, mechanical or
other suitable methods . 6
6.4 Preparation of the test assemblies . 6
7 Procedure. 7
8 Expression of results . 7
8.1 Water-vapour transmission rate, V, of self-supporting coatings . 7
8.1.1 Rate of flow of water vapour, G, through the test piece . 7
8.1.2 Water-vapour transmission rate, V, of the coating . 7
8.2 Water-vapour transmission rate, V, of non-self-supporting coatings . 8
8.2.1 General. 8
8.2.2 Rate of flow of water vapour through the substrate, G , and through the
s
substrate plus coating, G . 8
cs
8.2.3 Water-vapour transmission rate, V , of the substrate . 8
s
8.2.4 Water-vapour transmission rate, V , of the substrate plus coating. 9
cs
8.2.5 Water-vapour transmission rate, V, of the coating . 9
8.3 Water-vapour diffusion-equivalent air layer thickness, s . 9
d
8.4 Water-vapour resistance factor, μ .10
9 Precision .10
9.1 Repeatability, (r) .10
9.2 Reproducibility, (R) .10
10 Test report .11
Annex A (informative) Derivation of Formula (8) for the calculation of the water-vapour
diffusion-equivalent air layer thickness, s .12
d
Annex B (normative) Use of molten wax for sealing the test assembly .14
Bibliography .18
ISO 7783:2018(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
...
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