Een voorwoord
ISO (Internationale Organisatie voor Standaardisatie) zijn de nationale normalisatie-instellingen (ISO-lid) van de wereldfederatie. De ontwikkeling van internationale normen wordt doorgaans uitgevoerd via technische ISO-commissies. 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.

Deel 1 van de ISO/IEC-richtlijn beschrijft de procedures die zijn gebruikt om dit document te ontwikkelen, evenals de procedures die worden gebruikt voor verder onderhoud. In het bijzonder, Er moet aandacht worden besteed aan de verschillende goedkeuringscriteria die vereist zijn voor verschillende soorten ISO-documenten. Dit document is opgesteld in overeenstemming met de redactieregels van Deel 2 van de ISO/IEC-richtlijn (zie iso.org/directives).

Houd er rekening mee dat bepaalde elementen van dit document onderwerp kunnen zijn van octrooirechten. ISO is niet verantwoordelijk voor het identificeren van een of meer van dergelijke octrooirechten. In the process of document development determine the detailed information of any patent rights in the introduction and/or received ISO (zie iso.org/patents) patent statement list.

ISO 3251-2019 “Bepaling van niet-vluchtige verbindingen in verven, vernissen en kunststoffen”

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) zich houden aan het principe van de Wereldhandelsorganisatie (WTO) informatie, please refer to

Iso.org/iso/foreword.html.

This document is prepared by Technical Committee ISO/TC 35, Verven en vernissen, Subcommissie SC 9, General Test methods for paints and varnishes.

The fifth edition eliminates and replaces the fourth edition (ISO 3251:2008), die technisch is herzien. The main changes from the previous edition are as follows:

ISO 3251-2019 “Bepaling van niet-vluchtige verbindingen in verven, vernissen en kunststoffen”

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 “Bepaling van niet-vluchtige verbindingen in verven, vernissen en kunststoffen”

Invoering
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 delen) specifies test methods for determining the content of non-volatile substances in paints, varnishments and related products.

1 Toepassingsgebied
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, enz.)) 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.

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

Opmerking 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 “Bepaling van niet-vluchtige verbindingen in verven, vernissen en kunststoffen”

Opmerking 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 Normatieve referentiedocumenten
In the article refer to the following documents, the requirements of some or all of the content of this document. Voor gedateerde referenties, alleen de geciteerde versie is van toepassing. Voor ongedateerde referenties, the new version of the applicable reference documents (inclusief eventuele wijzigingen).

ISO 123, Rubber latex – Bemonstering

ISO 124, latex, rubber, the determination of total solid content

ISO 1513, verven en vernissen – test sample inspection and preparation

ISO 4618, verven en vernissen – termen en definities

ISO 15528, Verven, vernissen en grondstoffen voor verven en vernissen — Bemonstering

ISO 3251-2019 “Bepaling van niet-vluchtige verbindingen in verven, vernissen en kunststoffen”

3 termen en definities
Voor het doel van dit document, gegeven in de ISO 4618 terms and definitions apply.

ISO en IEC onderhouden terminologiedatabases voor standaardisatie op de volgende adressen:

– ISO online browserplatform: iso.org/obp

– IEC Elektropedie: beschikbaar op electropedia.org/

Alleen de standaardinformatiecomponent is openbaar beschikbaar. Om de volledige inhoud te zien, u zult de normen via formele kanalen moeten aanschaffen.