Une préface
OIN (Organisation internationale de normalisation) sont les organismes nationaux de normalisation (Membre de l'ISO) of the world federation. L'élaboration de normes internationales est généralement réalisée par l'intermédiaire de comités techniques 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 (CEI) on all electrical and standardized issues closely.

Partie 1 de la Directive ISO/CEI décrit les procédures utilisées pour élaborer ce document ainsi que celles utilisées pour une maintenance ultérieure.. En particulier, il convient de prêter attention aux différents critères d'approbation requis pour les différents types de documents ISO. Ce document a été rédigé conformément aux règles éditoriales de la partie 2 de la directive ISO/CEI (voir iso.org/directives).

Veuillez noter que certains éléments de ce document peuvent faire l'objet de droits de brevet. L'ISO n'est pas responsable de l'identification de tout ou partie de ces droits de brevet. In the process of document development determine the detailed information of any patent rights in the introduction and/or received ISO (voir iso.org/patents) patent statement list.

OIN 3251-2019 “Determination of nonvolatile compounds in Paints, varnishments and Plastics”

Tous les noms commerciaux utilisés dans ce document sont fournis à titre d'information pour la commodité des utilisateurs et ne constituent pas une approbation de celui-ci..

Interprétation volontaire, related standards and conformity assessment related ISO specific terminology and express the meaning of and the ISO in the technical barriers to trade (OTC) adhérer au principe de l'organisation mondiale du commerce (OMC) information, please refer to

Iso.org/iso/foreword.html.

This document is prepared by Technical Committee ISO/TC 35, Peintures et vernis, Sous-comité SC 9, General Test methods for paints and varnishes.

The fifth edition eliminates and replaces the fourth edition (OIN 3251:2008), qui a été techniquement révisé. The main changes from the previous edition are as follows:

OIN 3251-2019 “Determination of nonvolatile compounds in Paints, varnishments and Plastics”

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.

OIN 3251-2019 “Determination of nonvolatile compounds in Paints, varnishments and Plastics”

Introduction
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.

OIN 3233 (toutes les parties) specifies test methods for determining the content of non-volatile substances in paints, varnishments and related products.

1 Champ d'application
This document specifies a determination of paint, vernis, paint and varnish binder, polymer dispersions and condensation resin (such as phenolic resin (JiaJie phenolic resin and novolac solution, etc.)) 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.

Note 1: the product of the volatile matter content is not absolute, but rather depends on the determination of the temperature and heating time. Donc, 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. Donc, this method is mainly used to test different batches of the same type of product.

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

OIN 3251-2019 “Determination of nonvolatile compounds in Paints, varnishments and Plastics”

Note 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 Documents normatifs de référence
In the article refer to the following documents, the requirements of some or all of the content of this document. Pour les références datées, seule la version citée s'applique. Pour les références non datées, the new version of the applicable reference documents (y compris toute modification).

OIN 123, Rubber latex – Échantillonnage

OIN 124, latex, caoutchouc, the determination of total solid content

OIN 1513, peintures et vernis – test sample inspection and preparation

OIN 4618, peintures et vernis – Termes et définitions

OIN 15528, Des peintures, vernis et matières premières pour peintures et vernis — Échantillonnage

OIN 3251-2019 “Determination of nonvolatile compounds in Paints, varnishments and Plastics”

3 Termes et définitions
Aux fins de ce document, donné dans l'ISO 4618 les termes et les définitions s'appliquent.

L'ISO et la CEI maintiennent des bases de données terminologiques pour la normalisation aux adresses suivantes:

– Plateforme de navigation en ligne ISO: iso.org/obp

– Électropédie CEI: disponible sur electropedia.org/

Seul le composant d'information standard est accessible au public. Pour voir le contenu complet, vous devrez acheter les normes via des canaux formels.