Isang Paunang Salita
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Mangyaring tandaan na ang ilang mga elemento ng dokumentong ito ay maaaring maging paksa ng mga karapatan sa patent. ISO ay hindi responsable para sa pagtukoy ng anumang o lahat ng naturang mga karapatan sa patent. In the process of document development determine the detailed information of any patent rights in the introduction and/or received ISO (tingnan iso.org/patents) patent statement list.

ISO 3251-2019 “Pagpapasiya ng mga nonvolatile compounds sa Paints, varnishments at mga plastik”

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

Kusang loob na interpretasyon, kaugnay na pamantayan at pag alinsunod pagtatasa kaugnay ISO tiyak na terminolohiya at ipahayag ang kahulugan ng at ang ISO sa mga teknikal na hadlang sa kalakalan (TBT) sumunod sa prinsipyo ng world trade organization (WTO) impormasyon, please refer to

Iso.org/iso/foreword.html.

This document is prepared by Technical Committee ISO/TC 35, Mga pintura at barnis, Subcommittee SC 9, General Test methods for paints and varnishes.

The fifth edition eliminates and replaces the fourth edition (ISO 3251:2008), na kung saan ay teknikal na binago. Ang mga pangunahing pagbabago mula sa nakaraang edisyon ay ang mga sumusunod:

ISO 3251-2019 “Pagpapasiya ng mga nonvolatile compounds sa Paints, varnishments at mga plastik”

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. Ang buong listahan ng mga ahensya na ito ay matatagpuan sa iso.org/members.html.

ISO 3251-2019 “Pagpapasiya ng mga nonvolatile compounds sa Paints, varnishments at mga plastik”

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

1 Saklaw ng aplikasyon
This document specifies a determination of paint, magbarnis, paint and varnish binder, polymer dispersions and condensation resin (such as phenolic resin (JiaJie phenolic resin and novolac solution, atbp.)) 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.

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

Tala 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 “Pagpapasiya ng mga nonvolatile compounds sa Paints, varnishments at mga plastik”

Tala 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 Normatibong mga dokumento ng sanggunian
In the article refer to the following documents, the requirements of some or all of the content of this document. Para sa mga petsang sanggunian, ang binanggit na bersyon lamang ang nalalapat. Para sa mga walang petsang sanggunian, the new version of the applicable reference documents (including any amendment).

ISO 123, Rubber latex – Pag sampling

ISO 124, latex, goma na, the determination of total solid content

ISO 1513, mga pintura at barnis – test sample inspection and preparation

ISO 4618, mga pintura at barnis – mga tuntunin at kahulugan

ISO 15528, Mga Pintura, mga barnis at hilaw na materyales para sa mga pintura at barnis — Pag sampling

ISO 3251-2019 “Pagpapasiya ng mga nonvolatile compounds sa Paints, varnishments at mga plastik”

3 Mga tuntunin at kahulugan
For the purpose of this document, given in the ISO 4618 terms and definitions apply.

ISO at IEC mapanatili ang mga database ng terminolohiya para sa standardisasyon sa mga sumusunod na address:

– ISO online na platform ng pag browse: iso.org/obp

– IEC Electropedia: available sa electropedia.org/

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