EN ISO 3251:2019
(Main)Paints, varnishes and plastics - Determination of non-volatile-matter content (ISO 3251:2019)
Paints, varnishes and plastics - Determination of non-volatile-matter content (ISO 3251:2019)
This document specifies a method for determining the non-volatile-matter content by mass of paints, varnishes, binders for paints and varnishes, polymer dispersions and condensation resins such as phenolic resins (resols, novolak solutions etc.).
The method is also applicable to formulated dispersions containing fillers, pigments and other auxiliaries (e.g. thickeners, film-forming agents).
NOTE 1 The non-volatile-matter content of a product is not an absolute quantity but depends upon the temperature and period of heating used for the determination. Consequently, when using this method, only relative and not true values for non-volatile-matter content are obtained owing to solvent retention, thermal decomposition and evaporation of low molecular mass constituents. The method is therefore primarily intended for testing different batches of the same type of product.
NOTE 2 This method is suitable for synthetic rubber lattices, provided heating for a specific period of time is considered appropriate (ISO 124 specifies heating until the loss in mass of a 2 g test portion following successive periods of heating is less than 0,5 mg).
NOTE 3 In-house methods for determining non-volatile matter often include drying with infrared or microwave radiation. Standardization of such methods is not possible, since they are not generally applicable. Several polymer compositions tend to decompose during such treatment and therefore give incorrect results.
Beschichtungsstoffe und Kunststoffe - Bestimmung des Gehaltes an nichtflüchtigen Anteilen (ISO 3251:2019)
Dieses Dokument legt ein Verfahren zum Bestimmen des Massengehaltes an nichtflüchtigen Anteilen von Beschichtungsstoffen, Bindemitteln für Beschichtungsstoffe, Polymerdispersionen und Kondensationsharzen wie Phenolharze (Resole, Novolak Lösungen usw.) fest.
Das Verfahren ist auch auf formulierte Polymerdispersionen, die Füllstoffe, Pigmente und sonstige Hilfsstoffe (z. B. Verdickungsmittel, Filmbilde Hilfsmittel) enthalten, anwendbar.
ANMERKUNG 1 Der Gehalt an nichtflüchtigen Anteilen eines Produktes ist keine absolute Größe, sondern hängt von der bei der Prüfung angewendeten Temperatur und der Prüfdauer ab. Bei der Anwendung dieses Verfahrens werden folglich nur relative Werte und nicht die wahren Werte für den Gehalt an nichtflüchtigen Anteilen erhalten, bedingt durch Lösemittelretention, thermische Zersetzung und Verdunstung niedermolekularer Anteile. Das Verfahren ist deshalb in erster Linie für die Prüfung aufeinander folgender Lieferungen des gleichen Produktes gedacht.
ANMERKUNG 2 Dieses Verfahren ist geeignet für synthetische Kautschuklatices, wenn die Trocknung während der entsprechenden Zeitspanne als angemessen angesehen wird (ISO 124 schreibt eine Trocknungszeit vor, bei der der Masseverlust einer Probe von 2 g nach aufeinander folgenden Trocknungsintervallen weniger als 0,5 mg beträgt).
ANMERKUNG 3 Innerbetriebliche Verfahren zum Bestimmen des Gehaltes an nichtflüchtigen Anteilen schließen häufig ein Trocknen mittels Infrarot oder Mikrowellenstrahlung ein. Die Normung solcher Verfahren ist nicht möglich, da sie nicht generell anwendbar sind. Einige Polymerzusammensetzungen neigen während eines solchen Verfahrens zu Zersetzung und liefern deshalb falsche Ergebnisse.
Peintures, vernis et plastiques - Détermination de la matière non volatile (ISO 3251:2019)
Le présent document spécifie une méthode de détermination de la matière non volatile en masse des peintures, des vernis, des liants pour peintures et vernis, des dispersions de polymères et des résines de condensation, comme les résines phénoliques (résols, novolaques en solution, etc.).
La méthode est également applicable aux formulations en dispersion contenant des charges, des pigments ou d'autres additifs (par exemple, des épaississeurs, des agents filmogènes).
NOTE 1 La matière non volatile d'un produit n'est pas une grandeur absolue, mais dépend de la température et de la durée de chauffage utilisée pour l'essai. Par conséquent, cette méthode ne peut donner que des valeurs relatives et non exactes pour la matière non volatile en raison de la rétention du solvant, de la décomposition thermique et de l'évaporation des constituants de faible masse moléculaire. La méthode est donc d'abord prévue pour les essais sur divers lots d'un même type de produit.
NOTE 2 Cette méthode convient pour les latex de caoutchouc synthétique, à condition que la durée de chauffage soit jugée appropriée (l'ISO 124 spécifie de chauffer jusqu'à ce que la perte de masse d'une prise d'essai de 2 g, après des chauffages successifs, soit inférieure à 0,5 mg).
NOTE 3 Les méthodes internes de détermination de la matière non volatile comprennent souvent une étape de séchage aux rayonnements infrarouges ou micro-ondes. Ces méthodes n'étant pas applicables à tous les cas, leur normalisation n'est pas possible. Plusieurs compositions de polymères ont tendance à se décomposer pendant ce traitement, ce qui fausse les résultats.
Barve, laki in plastične mase - Določevanje nehlapnih snovi (ISO 3251:2019)
Ta dokument določa metodo za določevanje nehlapih snovi po masi barv, lakov, veziv za barve in lake, polimernih disperzijah in kondenzacijskih smolah, kot so fenolne smole (rezoli, raztopine novolak itd.).
Metoda se uporablja tudi za formulirane disperzije, ki vsebujejo polnila, pigmente in druge pomožne snovi (npr. zgoščevalce, snovi, ki tvorijo film).
OPOMBA 1: Vsebnost nehlapnih snovi v izdelku ni absolutna količina, ampak je odvisna od temperature in obdobja segrevanja, ki se uporabita pri določevanju. Pri uporabi te metode se tako pridobijo samo relativne in neprave vrednosti nehlapnih snovi zaradi zadržanja topila, toplotnega razkrajanja in izhlapevanja nizkomolekularnih sestavin. Metoda je zaradi tega namenjena predvsem preskušanju različnih serij izdelka iste vrste.
OPOMBA 2: Ta metoda je primerna za sintetične gumijaste mreže, če se segrevanje za določeno časovno obdobje šteje za ustrezno (standard ISO 124 določa segrevanje, dokler izguba mase preskusne količine 2 g po zaporednih obdobjih segrevanja ni manjša od 0,5 mg).
OPOMBA 3: Interne metode za določevanje nehlapnih snovi pogosto vključujejo sušenje z infrardečim ali mikrovalovnim sevanjem. Standardizacija takih metod ni mogoča, ker niso splošno veljavne.
Med tako obdelavo se običajno razkroji več polimernih sestavov, zaradi česar so dobljeni rezultati napačni.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2019
Nadomešča:
SIST EN ISO 3251:2008
Barve, laki in plastične mase - Določevanje nehlapnih snovi (ISO 3251:2019)
Paints, varnishes and plastics - Determination of non-volatile-matter content (ISO
3251:2019)
Beschichtungsstoffe und Kunststoffe - Bestimmung des Gehaltes an nichtflüchtigen
Anteilen (ISO 3251:2019)
Peintures, vernis et plastiques - Détermination de l'extrait sec (ISO 3251:2019)
Ta slovenski standard je istoveten z: EN ISO 3251:2019
ICS:
83.080.01 Polimerni materiali na Plastics in general
splošno
87.040 Barve in laki Paints and varnishes
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 3251
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2019
EUROPÄISCHE NORM
ICS 83.080.01; 87.040; 87.060.20 Supersedes EN ISO 3251:2008
English Version
Paints, varnishes and plastics - Determination of non-
volatile-matter content (ISO 3251:2019)
Peintures, vernis et plastiques - Détermination de la Beschichtungsstoffe und Kunststoffe - Bestimmung des
matière non volatile (ISO 3251:2019) Gehaltes an nichtflüchtigen Anteilen (ISO 3251:2019)
This European Standard was approved by CEN on 13 May 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, 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
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 3251:2019 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 3251:2019) 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 December 2019, and conflicting national standards
shall be withdrawn at the latest by December 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 3251:2008.
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 3251:2019 has been approved by CEN as EN ISO 3251:2019 without any modification.
INTERNATIONAL ISO
STANDARD 3251
Fifth edition
2019-05
Paints, varnishes and plastics —
Determination of non-volatile-matter
content
Peintures, vernis et plastiques — Détermination de la matière non
volatile
Reference number
ISO 3251:2019(E)
©
ISO 2019
ISO 3251:2019(E)
© 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.
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Published in Switzerland
ii © ISO 2019 – All rights reserved
ISO 3251:2019(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Apparatus . 1
5 Sampling . 2
6 Procedure. 3
6.1 Number of determinations . 3
6.2 Preparation and weighing of dish . 3
6.3 Weighing of samples . 3
6.4 Heating . 3
6.5 Weighing after heating . 4
7 Supplementary test conditions . 4
8 Expression of results . 4
9 Precision . 4
9.1 Repeatability limit r . 4
9.2 Reproducibility limit R . 5
10 Test report . 5
Annex A (informative) Common test parameters . 6
Bibliography . 8
ISO 3251:2019(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 fifth edition cancels and replaces the fourth edition (ISO 3251:2008), which has been technically
revised. The main changes compared to the previous edition are as follows:
— a general reference to ISO 4618 on terms and definitions has been added to Clause 3;
— the example of the desiccant in 4.5 has been changed to silica gel orange because the use of cobalt
chloride as indicator is no longer allowed;
— the precision data of polymer dispersions has been corrected: the figures given in the 2008 edition
were ± data which now have been converted correctly into percentages;
— the common test parameters for coating powders (powder resins) have been deleted from Table A.1
because ISO 8130-7 can be used instead;
— common test parameters for waterborne coating materials have been added to Table A.1.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/members .html.
iv © ISO 2019 – All rights reserved
ISO 3251:2019(E)
Introduction
For the method to be usable for unplasticized polymer dispersions and rubber lattices, the non-volatile
residue (which consists essentially of the polymeric material and of small quantities of auxiliaries such
as emulsifiers, protective colloids, stabilizers, solvents added as film-forming agents and – especially
for rubber latex concentrate – preserving agents) has to be chemically stable under the test conditions.
For plasticized samples, the residue, by definition, normally includes the plasticizer.
ISO 3233 (all parts) specifies test methods for determining the volume of non-volatile matter in paints,
varnishes and related products.
INTERNATIONAL STANDARD ISO 3251:2019(E)
Paints, varnishes and plastics — Determination of non-
volatile-matter content
1 Scope
This document specifies a method for determining the non-volatile-matter content by mass of paints,
varnishes, binders for paints and varnishes, polymer dispersions and condensation resins such as
phenolic resins (resols,
...
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