SIST EN ISO 6504-3:2020
(Main)Paints and varnishes - Determination of hiding power - Part 3: Determination of hiding power of paints for masonry and concrete (ISO 6504-3:2019)
Paints and varnishes - Determination of hiding power - Part 3: Determination of hiding power of paints for masonry and concrete (ISO 6504-3:2019)
EN-ISO 6504-3 specifies methods for determining the hiding power given by paint coats of white or light colours of tristimulus values Y and Y10 greater than 25, applied to a black and white chart, or to a colourless transparent foil. In the latter case the tristimulus values Y and Y10 are measured over black and white panels. Subsequently, the hiding power is calculated from these tristimulus values. This document also specifies a simple method for calculating the spreading rate for paints with a volatile matter content with low evaporation speed, e.g. coatings for interior walls and ceilings as specified in EN 13300.
Beschichtungsstoffe - Bestimmung des Deckvermögens - Teil 3: Bestimmung des Deckvermögens von Beschichtungen für mineralische Untergründe und Beton (ISO 6504-3:2019)
Dieses Dokument legt Verfahren zum Bestimmen des Deckvermögens von weißen oder hellen pigmentierten Beschichtungen [im Folgenden auf Deutsch kurz Beschichtungen genannt] mit den Farbwerten Y und Y10 größer als 25 fest, die auf schwarzweiße Kontrollkarten oder farblose, transparente Folie aufgetragen werden. Im letzteren Fall werden die Farbwerte Y und Y10 über schwarzweißen Platten gemessen. Anschließend wird das Deckvermögen aus diesen Farbwerten berechnet.
Dieses Dokument legt außerdem ein einfaches Verfahren zum Berechnen der Ergiebigkeit von Beschichtungsstoffen mit flüchtigen Anteilen mit geringer Verdunstungsgeschwindigkeit fest, z. B. Beschichtungen für Innenwände und Decken, wie in EN 13300 festgelegt.
Peintures et vernis - Détermination du pouvoir masquant - Partie 3: Détermination du pouvoir masquant pour des peintures bâtiments et béton (ISO 6504-3:2019)
Le présent document spécifie des méthodes de détermination du pouvoir masquant de couches de peinture blanche ou de peinture claire dont les valeurs du tristimulus Y et Y10 sont supérieures à 25, appliquées sur une carte à contraste de noir et de blanc, ou sur une feuille transparente et incolore. Dans ce dernier cas, les valeurs du tristimulus Y et Y10 sont mesurées sur des plaques noires et blanches. Ensuite, le pouvoir masquant est calculé à partir de ces valeurs du tristimulus.
Le présent document spécifie également une méthode simple pour calculer le rendement surfacique de peintures ayant une teneur en matières volatiles à vitesse d'évaporation lente, par exemple de revêtements pour murs et plafonds intérieurs comme spécifié dans l'EN 13300.
Barve in laki - Ugotavljanje kritnosti - 3. del: Ugotavljanje kritnosti barv za mineralne podlage in beton (ISO 6504-3:2019)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 6504-3:2020
01-april-2020
Nadomešča:
SIST EN ISO 6504-3:2007
Barve in laki - Ugotavljanje kritnosti - 3. del: Ugotavljanje kritnosti barv za
mineralne podlage in beton (ISO 6504-3:2019)
Paints and varnishes - Determination of hiding power - Part 3: Determination of hiding
power of paints for masonry and concrete (ISO 6504-3:2019)
Beschichtungsstoffe - Bestimmung des Deckvermögens - Teil 3: Bestimmung des
Deckvermögens von Beschichtungen für mineralische Untergründe und Beton (ISO 6504
-3:2019)
Peintures et vernis - Détermination du pouvoir masquant - Partie 3: Détermination du
pouvoir masquant pour des peintures bâtiments et béton (ISO 6504-3:2019)
Ta slovenski standard je istoveten z: EN ISO 6504-3:2019
ICS:
87.040 Barve in laki Paints and varnishes
SIST EN ISO 6504-3:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 6504-3:2020
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SIST EN ISO 6504-3:2020
EN ISO 6504-3
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2019
EUROPÄISCHE NORM
ICS 87.040 Supersedes EN ISO 6504-3:2007
English Version
Paints and varnishes - Determination of hiding power -
Part 3: Determination of hiding power of paints for
masonry, concrete and interior use (ISO 6504-3:2019)
Peintures et vernis - Détermination du pouvoir Beschichtungsstoffe - Bestimmung des Deckvermögens
masquant - Partie 3: Détermination du pouvoir - Teil 3: Bestimmung des Deckvermögens von
masquant pour des peintures bâtiments, béton et Beschichtungen für mineralische Untergründe und
utilisation en intérieur (ISO 6504-3:2019) Beton (ISO 6504-3:2019)
This European Standard was approved by CEN on 22 October 2019.
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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, 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
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 6504-3:2019 E
worldwide for CEN national Members.
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SIST EN ISO 6504-3:2020
EN ISO 6504-3:2019 (E)
Contents Page
European foreword . 3
2
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SIST EN ISO 6504-3:2020
EN ISO 6504-3:2019 (E)
European foreword
This document (EN ISO 6504-3:2019) 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 June 2020, and conflicting national standards shall be
withdrawn at the latest by June 2020.
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 6504-3:2007.
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, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 6504-3:2019 has been approved by CEN as EN ISO 6504-3:2019 without any
modification.
3
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SIST EN ISO 6504-3:2020
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SIST EN ISO 6504-3:2020
INTERNATIONAL ISO
STANDARD 6504-3
Third edition
2019-11
Paints and varnishes — Determination
of hiding power —
Part 3:
Determination of hiding power of
paints for masonry, concrete and
interior use
Peintures et vernis — Détermination du pouvoir masquant —
Partie 3: Détermination du pouvoir masquant pour des peintures
bâtiments, béton et utilisation en intérieur
Reference number
ISO 6504-3:2019(E)
©
ISO 2019
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SIST EN ISO 6504-3:2020
ISO 6504-3:2019(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2019
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
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2019 – All rights reserved
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SIST EN ISO 6504-3:2020
ISO 6504-3:2019(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and abbreviated terms . 2
5 Principle . 4
6 Apparatus . 4
7 Sampling . 6
8 Procedure and calculation . 7
8.1 Preparation of substrate . 7
8.1.1 Method A (foil) . . 7
8.1.2 Method B and Method C (black and white charts) . 7
8.2 Preparation of coated foils or black and white charts . 7
8.3 Determination of the spreading rate of the test specimen . 7
8.3.1 Calculation of the surface mass density . 7
8.3.2 Determination of the density . 9
8.3.3 Determination of the non-volatile matter . 9
8.3.4 Calculation of the theoretical dry- or wet-film thickness (method A,
method B and method C) . 9
8.3.5 Calculation 1 – Determination of the theoretical spreading rate by
calculation from the non-volatile matter content determined in
accordance with ISO 3251 and the density of the coating material (see
ISO 3233-3) (method A and method B) .10
8.3.6 Calculation 2 – Determination of the theoretical spreading rate calculated
with the different coated masses on the two charts (method C), the
density of the coating material according to ISO 2811 (all parts) and the
coated area .12
8.4 Measurement of tristimulus value Y and calculation of the hiding power H .13
10 10
8.4.1 General.13
8.4.2 Method A (foil) . .13
8.4.3 Method B (black and white charts) .13
8.4.4 Method C (black and white charts) .13
8.5 Graphical method for determination of the hiding power at a given spreading rate
(method C) .14
8.5.1 General.14
8.5.2 Determination by graphical method .14
8.5.3 Determination by calculation with a known slope .16
9 Designation of the test result .17
10 Precision .18
11 Test report .18
Annex A (informative) Details on interlaboratory comparison .20
Bibliography .22
© ISO 2019 – All rights reserved iii
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SIST EN ISO 6504-3:2020
ISO 6504-3:2019(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 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 6504-3:2006), which has been technically
revised. The main changes compared to the previous edition are as follows:
— the title and Scope have been restricted to paints for masonry and concrete;
— a definition for light-coloured paint has been added;
— a new method (method C), which is suitable for waterborne coating materials only, has been
introduced;
— the determination of the mass per unit area of the dry coating and the determination of the practical
spreading rate have been deleted (ISO 3233-3 can be used instead);
— the reference to a fixed spreading rate has been deleted from the foreword, scope and test report (it
had already been deleted from the procedure in the previous edition);
— the historic precision values for methods A and B have been deleted from the normative part and
information on a new interlaboratory comparison on method C has been added in an informative
annex, i.e. Annex A;
— the normative references have been updated.
A list of all parts in the ISO 6504 series can be found on the ISO website.
iv © ISO 2019 – All rights reserved
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SIST EN ISO 6504-3:2020
ISO 6504-3:2019(E)
Introduction
Two techniques are available for substrate preparation and measurement when determining the hiding
power of paints for masonry and concrete:
a) application to colourless, transparent foil, the coated foil being subsequently placed in turn over
black and white panels;
b) direct application to black and white charts.
The spreading rate is important for the determination of the hiding power ratio. The spreading rate can
be either determined according to ISO 3233-3 or according to another simplified method described in
the standards applicable to coating materials for interior walls and ceilings as specified in EN 13300.
Because different operators using the same draw-down device will obtain coatings differing
significantly in thickness, an absolute method for the determination of opacity is described in this
document. Collaborative trials between groups of experts from a number of countries have shown
that reproducible results can be obtained by determination of the hiding power corresponding to a
precisely specified spreading rate by interpolation between measurements at two or more measured
coating thicknesses nearby and enclosing the specified spreading rate. The interested parties might
agree on the specified spreading rate.
The methods are based on the observation that hiding power is an approximately linear function of
reciprocal spreading rate, over a restricted coating thickness range which also corresponds to that used
for normal application of white or light-coloured paints. It is thus possible to interpolate graphically
or by computation, with satisfactory accuracy, between results obtained with coatings of different
thicknesses.
© ISO 2019 – All rights reserved v
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SIST EN ISO 6504-3:2020
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SIST EN ISO 6504-3:2020
INTERNATIONAL STANDARD ISO 6504-3:2019(E)
Paints and varnishes — Determination of hiding power —
Part 3:
Determination of hiding power of paints for masonry,
concrete and interior use
1 Scope
This document specifies methods for determining the hiding power given by paint coats of white or
light colours of tristimulus values Y and Y greater than 25, applied to a black and white chart, or to a
10
colourless transparent foil. In the latter case the tristimulus values Y and Y are measured over black
10
and white panels. Subsequently, the hiding power is calculated from these tristimulus values.
This document also specifies a simple method for calculating the spreading rate for paints with
a volatile matter content with low evaporation speed, e.g. coatings for interior walls and ceilings as
specified in EN 13300.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 1513, Paints and varnishes — Examination and preparation of test samples
ISO 2811 (all parts), Paints and varnishes — Determination of density
ISO 3251, Paints, varnishes and plastics — Determination of non-volatile-matter content
ISO 3233-3:2015, Paints and varnishes — Determination of the percentage volume of non-volatile matter —
Part 3: Determination by calculation from the non-volatile-matter content determined in accordance with
ISO 3251, the density of the coating material and the density of the solvent in the coating material
ISO 15528, Paints, varnishes and raw materials for paints and varnishes — Sampling
EN 13300, Paints and varnishes — Water-borne coating materials and coating systems for interior walls
and ceilings — Classification
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
light-coloured paint
coating with tristimulus values Y and Y greater than 25, measured with a spectrophotometer on a
10
black and white substrate
[SOURCE: ISO 6504-1:2019, 3.1]
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SIST EN ISO 6504-3:2020
ISO 6504-3:2019(E)
3.2
spreading rate
surface area that can be covered by a given quantity of coating material to give a dried film of requisite
thickness
2 2
Note 1 to entry: It is expressed in m /l or m /kg.
Note 2 to entry: See also application rate, practical spreading rate and theoretical spreading rate.
[SOURCE: ISO 4618:2014, 2.238]
3.3
practical spreading rate
spreading rate (3.2) which is obtained in practice on the particular substrate being coated
[SOURCE: ISO 4618:2014, 2.203]
3.4
theoretical spreading rate
spreading rate (3.2) calculated solely from the volume of non-volatile matter
[SOURCE: ISO 4618:2014, 2.256]
3.5
hiding power
ability of a coating to obliterate the colour or colour differences of the substrate
Note 1 to entry: The use of the German expressions “Deckkraft” und “Deckfähigkeit” should be avoided.
Note 2 to entry: The term “coverage” is ambiguous because it is used in some instances to refer to hiding power and
in others to mean spreading rate. The more precise terms hiding power and spreading rate should always be used.
[SOURCE: ISO 4618:2014, 2.138]
3.6
tristimulus values (of a colour stimulus)
amounts of the three reference stimuli, in a given trichromatic system, required to match the colour of
the stimulus considered
Note 1 to entry: In the CIE standard colorimetric systems, the tristimulus values are represented by the symbols
X, Y, Z and X , Y , Z .
10 10 10
[SOURCE: ISO 11664-2:2007, 3.14]
4 Symbols and abbreviated terms
A dry area of the coated charts of the area cut out in each case
c
A dry area of the coated foils of the part cut out in each case
f
A dry area of the part of the foil or charts cut out in each case
n
A wet area of the coated charts
wc
H hiding power
10
H hiding power of the coated chart
10c
H hiding power of the coated foil
10f
H hiding power for the chart with the low coating thickness
10cl
2 © ISO 2019 – All rights reserved
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SIST EN ISO 6504-3:2020
ISO 6504-3:2019(E)
H hiding power for the chart with the high coating thickness
10ch
m
slope of the straight line
m mean value of the mass of the coated charts
c
m mean value of the mass of the coated foils
f
m mean value of the mass of the uncoated foils
uf
m mass of the uncoated chart
uc
m mass of the wet coated chart
wc
m mass of the high wet-film thickness on the chart
wch
m mass of the low wet-film thickness on the chart
wcl
n
interception of the Y-axis at the point zero of the X-axis, P(0,n)
NV non-volatile matter content of the coating material
NV the non-volatile-matter content of the wet coating
w
ρ surface mass density of the dry coating on the charts
Ac
ρ surface mass density of the dry coating on the foils
Af
ρ surface mass density of the dry coating on the foils or charts or wet coating on the charts
An
ρ surface mass density of the coat with the high wet-film thickness on the chart
Awch
ρ surface mass density of the coat with the low wet-film thickness on the chart
Awcl
ρ density of the coating material
1
theoretical spreading rate
stAm
s given theoretical spreading rate
tAVg
s theoretical spreading rate for the chart with the high coating thickness
tAVh
s theoretical spreading rate for the chart with the low coating thickness
tAVl
s theoretical spreading rate of the dry coating on the charts relative to the mass
tcm
s theoretical spreading rate of the dry coating on the charts relative to the volume
tcV
s theoretical spreading rate of the dry coating on the foils relative to the mass
tfm
s theoretical spreading rate of the dry coating on the foils relative to the volume
tfV
t theoretical dry-film thickness
td
t theoretical dry film thickness of the coating on charts
tc
t theoretical dry film thickness of the coating on foils
tf
t theoretical dry film thickness of the coating on foils or charts
tn
t theoretical wet-film thickness
W
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SIST EN ISO 6504-3:2020
ISO 6504-3:2019(E)
t theoretical low wet-film thickness
wl
t theoretical high wet-film thickness
wh
mean value of the tristimulus value measured over the black areas
Y
10b
mean value of the tristimulus value measured over the black areas of the high coating
Y
10bh
thickness
mean value of the tristimulus value measured over the black areas of the low coating
Y
10bl
thickness
mean value of the tristimulus value measured over the white areas
Y
10w
mean value of the tristimulus value measured over the white areas of the high coating
Y
10wh
thickness
Y mean value of the tristimulus value measured over the white areas of the low coating
10wl
thickness
X, Y, Z tristimulus values of test stimulus calculated using the colour-matching functions of the
CIE 1931 standard colorimetric system (also known as the CIE 2° standard colorimetric
system) [See ISO 11664-4:2007, Clause 3]
X , Y , Z tristimulus values of a specific white colour stimulus calculated using the colour-match-
10 10 10
ing functions of the CIE 1964 standard colorimetric system
Where tristimulus values are calculated using the colour-matching functions of the CIE 1964 standard
colorimetric system (also known as the CIE 10° standard colorimetric system), a subscript 10 shall be
added to all the above symbols (See ISO 11664-4:2007, Clause 3).
5 Principle
For method A, coated transparent foils are fixed over a black and white panel. The spreading rate is
calculated from the measurements of the surface mass density and the theoretical dry-film thickness.
The tristimulus values Y of the coated foils are measured over the black and white areas. The hiding
10
power is calculated as a quotient of these values as a percentage for each coated foil.
For method B, black and white charts are coated and dried (or stoved). The spreading rate is calculated
from the measurements of the surface mass density and the theoretical dry-film thickness. The
tristimulus values Y of each coated chart are measured over the black and white areas. The hiding
10
power is calculated as a quotient of these values as a percentage for each coated chart.
For method C, black and white charts are coated. The spreading rate is calculated from the
measurements of the coated area (whole charts), of the density of the coating material and the mass
difference of the uncoated and coated charts. Then the coating is dried. The tristimulus values Y of
10
each coated chart are measured over the black and white areas. The hiding power is calculated as a
quotient of these values as a percentage for each coated chart.
6 Apparatus
Ordinary laboratory apparatus and glassware, together with the following:
6.1 Substrate, conforming to the requirements of 8.1.1 or 8.1.2.
6.2 Three colourless transparent foils (method A), untreated.
4 © ISO 2019 – All rights reserved
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SIST EN ISO 6504-3:2020
ISO 6504-3:2019(E)
6.3 Three black and white charts (method B) and two or four (see 6.4) black and white charts
(method C), all the same size and measuring at least 100 mm × 200 mm, printed and varnished to give
adjacent black and white areas readily wetted by, but impervious to, solvent- or water-based paints.
The black and white areas shall have dimensions bigger than the measurement area of the
spectrophotometer. The tristimulus value Y of the white areas of the charts shall be 80 ± 2 when
10
measured using a spectrophotometer or spectrophotometer complying with 6.5, and that of the black
area shall not be greater than 5, unless otherwise agreed.
To avoid errors due to variation from one batch of charts to another, the charts used for the test shall
come from the same batch.
If the chart is a metal plate, both the black and the white areas shall be coated on the back and edges
with black paint or adhesive tape to exclude light reflected from the back.
Ensure that only black and white charts without optical brighteners are used.
6.4 Film applicators, selected to give a range of films of uniform wet film thickness.
For method C, the film applicators need to be of slightly different sizes, i.e. max. 50 µm difference in size
in order to give suitable coating thicknesses, allowing the assumption of linearity in spreading rate for
the calculation. The gap of the applicators depends on the type of coating material and its viscosity.
The application of uniform films is facilitated by the use of automatic applicators, wh
...
SLOVENSKI STANDARD
oSIST prEN ISO 6504-3:2018
01-november-2018
Barve in laki - Ugotavljanje kritnosti - 3. del: Ugotavljanje kritnosti barv za
mineralne podlage in beton (ISO/DIS 6504-3:2018)
Paints and varnishes - Determination of hiding power - Part 3: Determination of hiding
power of paints for masonry and concrete (ISO/DIS 6504-3:2018)
Beschichtungsstoffe - Bestimmung des Deckvermögens - Teil 3: Bestimmung des
Deckvermögens von Beschichtungen für mineralische Untergründe und Beton (ISO/DIS
6504-3:2018)
Peintures et vernis - Détermination du pouvoir masquant - Partie 3: Détermination du
pouvoir masquant pour des peintures bâtiments et béton (ISO/DIS 6504-3:2018)
Ta slovenski standard je istoveten z: prEN ISO 6504-3
ICS:
87.040 Barve in laki Paints and varnishes
oSIST prEN ISO 6504-3:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
oSIST prEN ISO 6504-3:2018
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oSIST prEN ISO 6504-3:2018
DRAFT INTERNATIONAL STANDARD
ISO/DIS 6504-3
ISO/TC 35/SC 9 Secretariat: BSI
Voting begins on: Voting terminates on:
2018-09-11 2018-12-04
Paints and varnishes — Determination of hiding power —
Part 3:
Determination of hiding power of paints for masonry and
concrete
Peintures et vernis — Détermination du pouvoir masquant —
Partie 3: Détermination du pouvoir masquant pour des peintures bâtiments et béton
ICS: 87.040
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
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 6504-3:2018(E)
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oSIST prEN ISO 6504-3:2018
ISO/DIS 6504-3:2018(E)
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oSIST prEN ISO 6504-3:2018
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Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and abbreviated terms . 2
5 Principle . 4
6 Apparatus . 4
7 Sampling . 6
8 Procedure and calculation . 7
8.1 Preparation of substrate . 7
8.1.1 Method A (foil) . . 7
8.1.2 Method B and Method C (black and white charts) . 7
8.2 Preparation of coated foils or black and white charts . 7
8.3 Determination of the spreading rate of the test specimen . 7
8.3.1 Calculation of the surface mass density . 7
8.3.2 Determination of the density . 9
8.3.3 Determination of the non-volatile matter . 9
8.3.4 Calculation of the theoretical dry- or wet-film thickness (Method A,
Method B and Method C) . 9
8.3.5 Calculation 1 – Determination of the theoretical spreading rate by
calculation from the non-volatile matter content determined in
accordance with ISO 3251 and the density of the coating material (see
ISO 3233-3) (Method A and Method B) .10
8.3.6 Calculation 2 – Determination of the theoretical spreading rate calculated
with the different coated mass on the two charts (Method C), the density
of the coating material according to ISO 2811 (all parts) and the coated area .12
8.4 Measurement of tristimulus value Y and calculation of the hiding power H .
10 10 13
8.4.1 General.13
8.4.2 Method A (foil) . .13
8.4.3 Method B (black and white charts) .13
8.4.4 Method C (black and white charts) .13
8.5 Graphical method for determination of the hiding power at a given spreading rate
(Method C) .14
8.5.1 General.14
8.5.2 Determination by graphical method .14
8.5.3 Determination by calculation with a known slope .15
9 Designation of the test result .16
10 Precision .17
10.1 Repeatability (r) .17
10.2 Reproducibility (R) .17
11 Test report .17
Bibliography .19
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oSIST prEN ISO 6504-3:2018
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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 on 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 the following
URL: www .iso .org/iso/foreword .html.
This document was prepared by Technical 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 6504-3:2006), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— the title and scope have been restricted to paints for masonry and concrete;
— a definition for light-coloured coating has been added;
— a new method (Method C) has been introduced which is suitable for waterborne coatings only
— the determination of the mass per unit area of the dry coating and the determination of the practical
spreading rate have been deleted because ISO 3233-3 can be used instead;
— the reference to a fixed spreading rate has been deleted from the foreword, scope and test report, as
it had already been deleted from the procedure in the previous revision;
— the precision values for methods A and B have been recalculated from data taken from the round
robin test conducted in 1972;
— the normative references have been updated.
A list of all parts in the ISO 6504, Paints and varnishes — Determination of hiding power, series can be
found on the ISO website.
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Introduction
Two techniques are available for substrate preparation and measurement when determining the hiding
power of paints:
a) application to colourless, transparent foil, the coated foil being subsequently placed in turn over
black and white panels;
b) direct application to black and white charts.
The spreading rate is important for the determination of the hiding power ratio. The spreading rate can
be either determined according to ISO 3233-3 or according to another simplified method described in
these standards, applicable for coatings for interior walls and ceilings as specified in EN 13300.
Because different operators using the same draw-down device will obtain coatings differing
significantly in thickness, an absolute method for the determination of opacity is required. Collaborative
trials between groups of experts from a number of countries have shown that reproducible results can
be obtained by determination of the hiding power corresponding to a precisely specified spreading
rate by interpolation between measurements at two or more measured coating thicknesses nearby and
enclosing the specified spreading rate. The interested parties may agree on the specified spreading rate.
The methods are based on the observation that hiding power is an approximately linear function of
reciprocal spreading rate, over a restricted coating thickness range which also corresponds to that used
for normal application of white or light-coloured paints. It is thus possible to interpolate graphically
or by computation, with satisfactory accuracy, between results obtained with coatings of different
thicknesses.
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oSIST prEN ISO 6504-3:2018
DRAFT INTERNATIONAL STANDARD ISO/DIS 6504-3:2018(E)
Paints and varnishes — Determination of hiding power —
Part 3:
Determination of hiding power of paints for masonry and
concrete
1 Scope
This document (ISO 6504-3) specifies methods for determining the hiding power given by paint coats of
white or light colours of tristimulus values Y and Y greater than 25, applied to a black and white chart,
10
or to a colourless transparent foil. In the latter case the tristimulus values Y and Y are measured over
10
black and white panels. Subsequently, the hiding power is calculated from these tristimulus values.
This document specifies also a simple method for calculating the spreading rate for paints with
a volatile matter content with low evaporation speed, e.g. coatings for interior walls and ceilings as
specified in EN 13300.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 1513, Paints and varnishes — Examination and preparation of test samples
ISO 2811 (all parts), Paints and varnishes — Determination of density
ISO 3233-3:2015, Paints and varnishes — Determination of the percentage volume of non-volatile matter —
Part 3: Determination by calculation from the non-volatile-matter content determined in accordance with
ISO 3251, the density of the coating material and the density of the solvent in the coating material
ISO 3251, Paints, varnishes and plastics — Determination of non-volatile-matter content
ISO 4618:2014, Paints and varnishes — Terms and definitions
ISO 15528, Paints, varnishes and raw materials for paints and varnishes — Sampling
EN 13300, Paints and varnishes — Water-borne coating materials and coating systems for interior walls
and ceilings — Classification
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 4618 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http: //www .electropedia .org/
— ISO Online browsing platform: available at http: //www .iso .org/obp
3.1
light-coloured coating
coating with tristimulus values Y and Y greater than 25, measured with a spectrophotometer on a
10
black and white substrate
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3.2
spreading rate
surface area that can be covered by a given quantity of coating material to give a dried film of requisite
thickness
2 2
Note 1 to entry: It is expressed in m /l or m /kg.
Note 2 to entry: See also application rate, practical spreading rate and theoretical spreading rate.
[SOURCE: ISO 4618:2014, definition 2.238]
3.3
practical spreading rate
spreading rate which is obtained in practice on the particular substrate being coated
[SOURCE: ISO 4618:2014, definition 2.203]
3.4
theoretical spreading rate
spreading rate calculated solely from the volume of non-volatile matter
[SOURCE: ISO 4618:2014, definition 2.256]
3.5
hiding power
ability of a coating to obliterate the colour or colour differences of the substrate
Note 1 to entry: The use of the German expressions “Deckkraft” und “Deckfähigkeit” should be avoided.
Note 2 to entry: The term “coverage” is ambiguous because it is used in some instances to refer to hiding power and
in others to mean spreading rate. The more precise terms hiding power and spreading rate should always be used.
[SOURCE: ISO 4618:2014, definition 2.138]
3.6
tristimulus values (of a colour stimulus) see ILV 845-03-22
amounts of the three reference stimuli, in a given trichromatic system, required to match the colour of
the stimulus considered
Note 1 to entry: In the CIE standard colorimetric systems, the tristimulus values are represented by the symbols
X, Y, Z and X , Y , Z
10 10 10
[SOURCE: ISO 11664-2:2008, definition 3.14]
4 Symbols and abbreviated terms
A dry area of the coated charts of the part cut out in each case
c
A dry area of the coated foils of the part cut out in each case
f
area of the part of the foil or charts cut out in each case
A
n
A wet area of the coated charts of the part cut out in each case
wc
hiding power for the chart with the low coating thickness
H
10cl
hiding power for the chart with the high coating thickness
H
10ch
m slope of the straight line
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mean value of the dry mass of the coated two charts
m
c
mean value of the mass of the coated two foils
m
f
mean value of the mass of the uncoated two foils
m
uf
m mass of the uncoated chart
uc
mean value of the wet mass of the coated two charts
m
wc
m is the wet mass of the high wet-film thickness on the chart
wch
m wet mass of the low wet-film thickness on the chart
wcl
n interception of the y-axis at the point zero of the x-axis, P(0,n)
NV non-volatile matter content of the coating material
NV is the non-volatile-matter content of the wet coating
w
ρ surface mass density of the dry coated charts
Ac
ρ surface mass density of the dry coated foil
Af
ρ surface mass density of the dry foils (A ) or dry charts (A ) or wet charts (A )
An f c wc
ρ surface mass density of the wet coated chart
Awc
ρ surface mass density of the wet coat with the high wet-film thickness
Awch
ρ surface mass density of the wet coat with the low wet-film thickness
Awcl
ρ density of the coating material
1
given theoretical spreading rate
S
tAVg
theoretical spreading rate for the chart with the high coating thickness
S
tAVh
theoretical spreading rate for the chart with the low coating thickness
S
tAVl
s theoretical spreading rate dry coating on charts relative to the mass
tcm
s theoretical spreading rate of the dry coating on charts relative to the volume
tcV
s theoretical spreading rate of dry coating on foils relative to the mass
tfm
s theoretical spreading rate of the dry coating on foils relative to the volume
tfV
t theoretical dry-film thickness
d
theoretical dry film thickness of the coating on charts
t
tc
theoretical dry film thickness of the coating on foils
t
tf
theoretical dry film thickness of the coating on foils (t ) or charts (t )
tf tc
t
tn
t theoretical wet-film thickness
w
t theoretical low wet-film thickness
wl
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oSIST prEN ISO 6504-3:2018
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t theoretical high wet-film thickness
wh
mean tristimulus value measured over the black areas
Y
10b
mean tristimulus value measured over the black areas of the high coating thickness
Y
10bh
mean tristimulus value measured over the black areas of the low coating thickness
Y
10bl
mean tristimulus value measured over the white areas
Y
10w
mean tristimulus value measured over the white areas of the high coating thickness
Y
10wh
mean tristimulus value measured over the white areas of the low coating thickness
Y
10wl
X, Y, Z tristimulus values of test stimulus calculated using the colour-matching functions of the
CIE 1931 standard colorimetric system (also known as the CIE 2° standard colorimetric
system) [ISO 11664-4:2008, Clause 3]
X , Y , Z tristimulus values of a specific white colour stimulus calculated using the colour-matching
10 10 10
functions of the CIE 1964 standard colorimetric system
Where tristimulus values are calculated using the colour-matching functions of the CIE 1964 standard
colorimetric system (also known as the CIE 10° standard colorimetric system), a subscript 10 shall be
added to all the above symbols [ISO 11664-4:2008, Clause 3].
5 Principle
For method A, coated transparent foils are fixed over a black and white panel. The spreading rate is
calculated from the measurements of the surface mass density and the theoretical dry-film thickness.
The tristimulus values Y of the coated foils are measured over the black and white areas. The hiding
10
power is calculated as a quotient of these values as a percentage for each coated foil.
For method B, black and white charts are coated and dried (or stoved). The spreading rate is calculated
from the measurements of the surface mass density and the theoretical dry-film thickness. The
tristimulus values Y of each coated chart are measured over the black and white areas. The hiding
10
power is calculated as a quotient of these values as a percentage for each coated chart.
For method C, black and white charts are coated. The spreading rate is calculated from the
measurements of the coated area (whole charts), of the density of the coating material and the mass
difference of the uncoated and coated charts. Then the coating is dried. The tristimulus values Y of
10
each coated chart are measured over the black and white areas. The hiding power is calculated as a
quotient of these values as a percentage for each coated chart.
6 Apparatus
Ordinary laboratory apparatus and glassware, together with the following:
6.1 Substrate, conforming to the requirements of 8.1.1 or 8.1.2.
6.2 Three colourless transparent foils (Method A), untreated.
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6.3 Three black and white charts (Method B) and two black and white charts (Method C), all the
same size and measuring at least 100 mm ´ 200 mm, printed and varnished to give adjacent black and
white areas readily wetted by, but impervious to, solvent- or water-based paints.
The black and white areas shall have dimensions bigger than the measurement area of the
spectrophotometer. The tristimulus value Y of the white areas of the charts shall be 80 ± 2 when
10
measured using a reflectometer or spectrometer complying with 6.5, and that of the black area shall
not be greater than 5, unless otherwise agreed.
To avoid errors due to variation from one batch of charts to another, the charts used for the test shall
come from the same batch.
If the chart is a metal plate, both the black and the white areas shall be coated on the back and edges
with black paint or adhesive tape to exclude light reflected from the back.
If black and white charts with optical brightener are used, this shall be stated in the test report.
6.4 Film applicators, selected to give a range of films of uniform wet film thickness.
For Method B and Method C the film applicators need to be of slightly different sizes, i.e. max. 50 µm
difference in size in order to give suitable coating thicknesses, allowing the assumption of linearity in
spreading rate for the calculation. The gap of the applicators depend on the type of coating material and
its viscosity.
NOTE The application of uniform films is facilitated by the use of automatic applicators, which are
recommended.
6.5 Spectrophotometer, to measure the tristimulus value Y .
10
It is recognized that the relative geometrical arrangement of the illumination beam and the light
detector can affect the measurement of Y , but it is considered that variations arising from this factor
10
in commercial reflectometers should be considerably less than the reproducibility figure stated in
Clause 9. For the sphere geometry the surface reflection is needed by either
a) reducing the tristimulus value Y by the corresponding surface reflection correction value in
10
Table 1 (an example see Figure 1) or
b) by measuring the tristimulus value Y with correction for surface reflection with a sphere 8°
10
(diffuse) geometry (an example see Figure 2).
Table 1 — Surface reflection correction with respect to the gloss property of coating
Surface reflection
Designation Angle of incidence Reflectance
correction
Gloss 60° ≥ 70 4
Mid sheen 60° < 70 2
85°
≥ 10
Matt 85° < 10 0
Dead-matt 85° < 5 0
NOTE Columns 1 to 3 see EN 13300, except that the reflectance limit from gloss to mid sheen is corrected from
60 to 70.
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a) sphere geometry b) 45:0° geometry
Key
1 Light source, daylight D65
2 Photo detector
3 Test surface
Figure 1 — Example for a spectrophotometer; sphere and 45:0 ° geometry
Key
1 Light source, daylight D65
2 Photo detector
3 Test surface
4 Gloss trap
Figure 2 — Example for a spectrophotometer; sphere with gloss trap
6.6 Analytical balance, capable of weighing to the nearest 0,1 mg.
7 Sampling
Take a representative sample of the product to be tested, as described in ISO 15528.
Examine and prepare the sample for testing as described in ISO 1513.
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8 Procedure and calculation
8.1 Preparation of substrate
8.1.1 Method A (foil)
Retain, for use in 8.4, an uncoated sample of foil from an area adjacent to the surface to be coated.
Fix it at one end and lay it over a flat rubber block. After application prepare the second foil in the
same manner.
8.1.2 Method B and Method C (black and white charts)
Store the black and white substrate charts under the test conditions [(23 ± 2) °C and a relative humidity
of (50 ± 5) %] for at least 16 h before coating; handle them at all times by the edges to avoid finger
prints on the areas to be coated.
Prepare each of the two charts for coating in the same manner. Fix one end, by clips or adhesive tape, to
a flat panel, using a vacuum suction plate or fixing it at one end, and lay it over a flat rubber block.
8.2 Preparation of coated foils or black and white charts
Immediately before application, mix the paint thoroughly by vigorous stirring to break down any
thixotropic structure, taking care not to incorporate air bubbles.
Apply the paint, depending on the coating thickness required, in a line across one end of the chart or foil
and spread it immediately by drawing down a suitable applicator at a steady speed to give a uniform layer.
For Method A and Met
...
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