А Префаце
ИСО (international organization for standardization) is the national standards bodies (ISO member) of the world federation. Развој међународних стандарда се обично спроводи преко ИСО техничких комитета. 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 (ИЕЦ) on all electrical and standardized issues closely.

Парт 1 ИСО/ИЕЦ директиве описује процедуре које се користе за израду овог документа као и оне које се користе за даље одржавање. Нарочито, треба обратити пажњу на различите критеријуме одобрења који су потребни за различите типове ИСО докумената. Овај документ је састављен у складу са уређивачким правилима Дел 2 ИСО/ИЕЦ директиве (види исо.орг/дирецтивес).

Имајте на уму да одређени елементи овог документа могу бити предмет патентних права. ИСО није одговоран за идентификацију било ког или свих таквих патентних права. In the process of document development determine the detailed information of any patent rights in the introduction and/or received ISO (see iso.org/patents) patent statement list.

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

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 (ТБТ) 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, Боје и лакови, Subcommittee SC 9, General Test methods for paints and varnishes.

The fifth edition eliminates and replaces the fourth edition (ИСО 3251:2008), which has been technically revised. Главне промене у односу на претходно издање су следеће:

ИСО 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 може се користити уместо тога;

— 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.

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

Увод
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.

ИСО 3233 (all parts) specifies test methods for determining the content of non-volatile substances in paints, varnishments and related products.

1 Обим примене
This document specifies a determination of paint, varnish, paint and varnish binder, polymer dispersions and condensation resin (such as phenolic resin (JiaJie phenolic resin and novolac solution, итд.)) 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.

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

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

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

Белешка 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 Нормативни референтни документи
In the article refer to the following documents, the requirements of some or all of the content of this document. За датиране референце, примењује се само наведена верзија. For undated references, the new version of the applicable reference documents (including any amendment).

ИСО 123, Rubber latex – Sampling

ИСО 124, latex, гума, the determination of total solid content

ИСО 1513, paints and varnishes – test sample inspection and preparation

ИСО 4618, paints and varnishes – terms and definitions

ИСО 15528, Paints, varnishes and raw materials for paints and varnishes — Sampling

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

3 Terms and definitions
For the purpose of this document, given in the ISO 4618 terms and definitions apply.

ISO and IEC maintain terminology databases for standardization at the following addresses:

– ISO online browsing platform: iso.org/obp

– ИЕЦ Елецтропедиа: доступно на елецтропедиа.орг/

Јавно је доступна само стандардна информативна компонента. Да бисте видели цео садржај, мораћете да купите стандарде путем формалних канала.