EN ISO 3251:2008
(Main)Paints, varnishes and plastics - Determination of non-volatile-matter content (ISO 3251:2008)
Paints, varnishes and plastics - Determination of non-volatile-matter content (ISO 3251:2008)
ISO 3251:2008 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 and film-forming agents). For the method to be usable for unplasticized polymer dispersions and rubber latices, 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.
Beschichtungsstoffe und Kunststoffe - Bestimmung des Gehaltes an nichtflüchtigen Anteilen (ISO 3251:2008)
Diese Internationale Norm legt ein Verfahren zum Bestimmen des Massengehaltes an nichtflüchtigen Anteilen von Beschichtungsstoffen, Bindemitteln für Beschichtungsstoffe, Polymerdispersionen und Kondensations¬harzen 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. Damit das Verfahren für weich¬macherfreie Polymerdispersionen und Kautschuklatices anwendbar ist, muss der nichtflüchtige Rückstand (im Wesentlichen bestehend aus dem Polymermaterial und kleinen Mengen von Hilfsstoffen, wie z. B. Emulgatoren, Schutzkolloiden, Stabilisatoren, Lösemitteln, die als Filmbilde Hilfsmittel und insbesondere bei Kautschuklatex Konzentrat als Konservierungsmittel zugegeben werden) unter den Prüfbedingungen chemisch stabil sein. Bei weichmacherhaltigen Proben schließt der Rückstand, laut Definition, gewöhnlich den Weichmacher mit ein.
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).
Peintures, vernis et plastiques - Détermination de l'extrait sec (ISO 3251:2008)
L'ISO 3251:2008 spécifie une méthode de détermination de l'extrait sec (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). Pour que la méthode soit applicable aux dispersions polymères non plastifiées et aux latex de caoutchouc, l'extrait sec (essentiellement constitué du matériau polymère et de faibles quantités d'additifs tels que des émulsifiants, des colloïdes de protection, des stabilisateurs, des solvants ajoutés tels que des agents filmogènes et — particulièrement dans le cas des latex de caoutchouc concentrés — des agents de préservation) doit être chimiquement stable dans les conditions d'essai. Dans le cas d'échantillons plastifiés, le résidu inclut, par définition, le plastifiant.
Barve, laki in plastične mase - Določevanje nehlapnih snovi (ISO 3251:2008)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2008
%DUYHODNLLQSODVWLþQHPDVH'RORþHYDQMHQHKODSQLKVQRYL ,62
Paints, varnishes and plastics - Determination of non-volatile-matter content (ISO
3251:2008)
Beschichtungsstoffe und Kunststoffe - Bestimmung des Gehaltes an nichtflüchtigen
Anteilen (ISO 3251:2008)
Peintures, vernis et plastiques - Détermination de l'extrait sec (ISO 3251:2008)
Ta slovenski standard je istoveten z: EN ISO 3251:2008
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.
EUROPEAN STANDARD
EN ISO 3251
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2008
ICS 83.080.01; 87.040; 87.060.20 Supersedes EN ISO 3251:2003
English Version
Paints, varnishes and plastics - Determination of non-volatile-
matter content (ISO 3251:2008)
Peintures, vernis et plastiques - Détermination de l'extrait Beschichtungsstoffe und Kunststoffe - Bestimmung des
sec (ISO 3251:2008) Gehaltes an nichtflüchtigen Anteilen (ISO 3251:2008)
This European Standard was approved by CEN on 7 February 2008.
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 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 Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2008 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 3251:2008: E
worldwide for CEN national Members.
Contents Page
Foreword.3
Foreword
This document (EN ISO 3251:2008) 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 August 2008, and conflicting national standards shall be withdrawn at
the latest by August 2008.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 3251:2003.
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, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 3251:2008 has been approved by CEN as a EN ISO 3251:2008 without any modification.
INTERNATIONAL ISO
STANDARD 3251
Fourth edition
2008-02-15
Paints, varnishes and plastics —
Determination of non-volatile-matter
content
Peintures, vernis et plastiques — Détermination de l'extrait sec
Reference number
ISO 3251:2008(E)
©
ISO 2008
ISO 3251:2008(E)
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ii © ISO 2008 – All rights reserved
ISO 3251:2008(E)
Contents Page
Foreword. iv
1 Scope. 1
2 Normative references. 1
3 Terms and definitions. 2
4 Apparatus. 2
5 Sampling. 3
6 Procedure. 3
7 Supplementary test conditions . 4
8 Expression of results. 4
9 Precision. 5
10 Test report. 5
Annex A (informative) Commonly used test parameters . 6
Bibliography . 7
ISO 3251:2008(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. 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.
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.
ISO 3251 was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee SC 10,
Test methods for binders for paints and varnishes, in collaboration with Technical Committee CEN/TC 139,
Paints and varnishes.
This fourth edition cancels and replaces the third edition (ISO 3251:2003), which has been technically revised.
The main changes are as follows:
a) The heating time, heating temperature and test-portion mass have to be agreed in each case. The tables
giving values of these parameters have therefore been moved to an informative annex where they are
intended to serve as proposals. Values suitable for reactive systems such as car refinish paints have
been added.
b) The precision data have been corrected.
iv © ISO 2008 – All rights reserved
INTERNATIONAL STANDARD ISO 3251:2008(E)
Paints, varnishes and plastics — Determination of non-volatile-
matter content
1 Scope
This International Standard 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 and film-forming agents). For the method to be usable for unplasticized polymer dispersions and
rubber latices, 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.
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 latices 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. Some polymer compositions tend
to decompose during such treatment and therefore give incorrect results.
ISO 3233 and ISO 23811 specify methods for determining the volume of non-volatile matter in paints,
varnishes and related products.
2 Normative references
The following referenced documents are indispensable for the application 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 123, Rubber latex — Sampling
ISO 124, Latex, rubber — Determination of total solids content
ISO 1513, Paints and varnishes — Examination and preparation of samples for testing
ISO 2431, Paints and varnishes — Determination of flow time by use of flow cups
ISO 15528, Paints, varnishes and raw materials for paints and varnishes — Sampling
ISO 3251:2008(E)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
non-volatile matter
NV
residue by mass obtained by evaporation under specified conditions
[ISO 4618:2006]
4 Apparatus
Ordinary laboratory apparatus, together with the following:
4.1 For paints, varnishes, binders for paints and varnishes and polymer dispersions:
Flat-bottomed dish, of metal or glass, inner diameter of base (75 ± 5) mm, height of rim at least 5 mm.
Dishes having different diameters may be used by agreement between the interested parties. The agreed dish
diameter shall be adhered to within ± 5 %.
NOTE 1 For rubber latices, lipless dishes with covers are recommended.
NOTE 2 For very viscous polymer dispersions or latices, it is recommended that aluminium foils are used which are
about 0,1 mm thick, cut into rectangles of about (70 ± 10) mm × (120 ± 10) mm that can be folded in half, thus allowing the
viscous liquid to be spread by gently squeezing the halves together.
4.2 For liquid crosslinking resins (phenolic resins):
Flat-bottomed dish, of metal or glass, inner diameter of base (75 ± 1)
...
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