Ein Vorwort
ISO (Internationale Standardisierungsorganisation) sind die nationalen Normungsgremien (ISO-Mitglied) des Weltverbandes. Die Entwicklung internationaler Standards erfolgt in der Regel durch technische Komitees der ISO. Each interested in the subject of which a technical committee has been set up members of the group have the right to send representatives to participate in the committee. Liaison with ISO international organizations, governments and ngos to participate in the work. ISO with the international electrotechnical commission (IEC) on all electrical and standardized issues closely.

Teil 1 der ISO/IEC-Richtlinie beschreibt die Verfahren, die zur Entwicklung dieses Dokuments sowie zur weiteren Wartung verwendet wurden. Insbesondere, Es sollte auf die unterschiedlichen Genehmigungskriterien geachtet werden, die für verschiedene Arten von ISO-Dokumenten erforderlich sind. Dieses Dokument wurde in Übereinstimmung mit den redaktionellen Regeln von Teil erstellt 2 der ISO/IEC-Richtlinie (siehe iso.org/directives).

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ISO 3251-2019 “Bestimmung nichtflüchtiger Verbindungen in Farben, Lacke und Kunststoffe”

Any trade names used in this document are provided as information for the convenience of users and do not constitute an endorsement thereof.

Voluntary interpretation, related standards and conformity assessment related ISO specific terminology and express the meaning of and the ISO in the technical barriers to trade (TBT) adhere to the principle of the world trade organization (WTO) Information, please refer to

Iso.org/iso/foreword.html.

This document is prepared by Technical Committee ISO/TC 35, Farben und Lacke, Unterausschuss SC 9, General Test methods for paints and varnishes.

The fifth edition eliminates and replaces the fourth edition (ISO 3251:2008), which has been technically revised. The main changes from the previous edition are as follows:

ISO 3251-2019 “Bestimmung nichtflüchtiger Verbindungen in Farben, Lacke und Kunststoffe”

To ISO 4618 – increased in clause 3 general reference of the terms and definitions:

— 4.5 example of desiccant to silica gel in orange, because no longer allowed to use cobalt chloride as the indicator;

— Corrected accuracy data for polymer dispersions: the figures given in the 2008 edition were ± data, which have now been correctly converted to percentages;

— General test parameters for paint powders (powder resins) have been removed from Table A.1 because ISO 8130-7 can be used instead;

— Added common test parameters for waterborne coatings in Table A.1.

Any feedback or question this file should be submitted to the national standards organizations of users. A full list of these agencies can be found at iso.org/members.html.

ISO 3251-2019 “Bestimmung nichtflüchtiger Verbindungen in Farben, Lacke und Kunststoffe”

Einführung
For methods that can be used for unplasticized polymer dispersions and rubber latex, the non-volatile residues (mainly composed of polymer materials and small amounts of additives, such as emulsifiers, protective colloids, stabilizers, solvents added as film forming agents and — especially for rubber latex concentrates — preservatives) need to be chemically stable under the test conditions. For plasticized samples, residues usually include plasticizers by definition.

ISO 3233 (alle Teile) specifies test methods for determining the content of non-volatile substances in paints, varnishments and related products.

1 Geltungsbereich
This document specifies a determination of paint, Lack, paint and varnish binder, polymer dispersions and condensation resin (such as phenolic resin (JiaJie phenolic resin and novolac solution, usw.)) method of non-volatile matter content.

This method can also be applied to preparation containing fillers, pigments and other additives, such as thickening agent, film former dispersions.

Notiz 1: the product of the volatile matter content is not absolute, but rather depends on the determination of the temperature and heating time. daher, when this method is used, only relative rather than true values of the non-volatile content can be obtained due to solvent retention, thermal decomposition, and evaporation of low molecular weight components. daher, this method is mainly used to test different batches of the same type of product.

Notiz 2 This method is suitable for synthetic rubber latex, provided that heating for a specified period of time is considered appropriate (ISO 124 provides heating until the mass loss of 2 g of the test portion is less than 0.5 mg after continuous heating).

ISO 3251-2019 “Bestimmung nichtflüchtiger Verbindungen in Farben, Lacke und Kunststoffe”

Notiz 3 Internal methods for determining nonvolatile substances usually include drying with infrared or microwave radiation. The standardization of this kind of method is impossible, because they are not universal. Several polymer compositions tend to break down during this treatment and therefore give incorrect results.

2 Normative Referenzdokumente
In the article refer to the following documents, the requirements of some or all of the content of this document. Für datierte Referenzen, Es gilt ausschließlich die zitierte Fassung. Für undatierte Referenzen, the new version of the applicable reference documents (including any amendment).

ISO 123, Rubber latex – Probenahme

ISO 124, Latex, Gummi, the determination of total solid content

ISO 1513, Farben und Lacke – test sample inspection and preparation

ISO 4618, Farben und Lacke – Begriffe und Definitionen

ISO 15528, Farben, Lacke und Rohstoffe für Farben und Lacke — Probenahme

ISO 3251-2019 “Bestimmung nichtflüchtiger Verbindungen in Farben, Lacke und Kunststoffe”

3 Begriffe und Definitionen
Für die Zwecke dieses Dokuments, in der ISO angegeben 4618 Es gelten die jeweiligen Begriffe und Definitionen.

ISO und IEC unterhalten unter folgenden Adressen Terminologiedatenbanken zur Standardisierung:

– ISO-Online-Browsing-Plattform: iso.org/obp

– IEC-Elektropädie: verfügbar unter electropedia.org/

Nur die Standardinformationskomponente ist öffentlich verfügbar. Um den vollständigen Inhalt zu sehen, Sie müssen die Standards über formelle Kanäle erwerben.