А Префаце
ИСО (Међународна организација за стандардизацију) је глобални савез националних тела за стандардизацију (Тела чланица ИСО). Развој међународних стандарда се обично спроводи преко ИСО техничких комитета. Свака институција чланица заинтересована за предмет за који је основан технички комитет има право да буде заступљена у комитету. У овај посао су укључене и владине и невладине међународне организације које су у вези са организацијама за стандардизацију. ИСО блиско сарађује са Међународном електротехничком комисијом (ИЕЦ) о свим питањима електричне стандардизације.

The procedures used to develop this document as well as those used for further maintenance are described in Part 1 ИСО/ИЕЦ директиве. 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).

Please note that certain contents of this document may be subject to patent rights. ИСО није одговоран за идентификацију било ког или свих таквих патентних права. Details of any patent rights identified during the preparation of the document will be in the introduction and/or in the list of patent claims received by ISO (see iso.org/patents).

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

Voluntary, related standards and conformity assessment related ISO specific and express the meaning of terminology as well as in relevant ISO technical barriers to trade (ТБТ) adhere to the principle of the world trade organization (WTO) information, please refer to the 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 third edition eliminates and replaces the second edition (ИСО 4628-10:2016), which has been technically revised.

ИСО 4628-10-2016 – Assessment of ageing of paints and varnish coatings – Процена броја и величине дефеката и интензитета уједначених промена изгледа – Парт 10: Assessment of the degree of filamentous corrosion

The main changes are as follows:

– The title has been shortened to “Paints and varnishs-Assessment of the number and size of defects, and the intensity of uniform changes in appearance – Парт 10: Assessment of the degree of filamentous corrosion”

— The definition of filamentous corrosion (3.1) has been consistent with ISO 4623-1:2018;

– The meaning of annex A has been truncated;

-Text has been edited and revised and normative references have been updated.

A list of all parts in the ISO 4628 series can be found on the ISO website.

Any feedback or questions regarding this document should be directed to the user’s national standards body. A full list of these agencies can be found at iso.org/members.html.

ИСО 4628-10-2016 – Assessment of ageing of paints and varnish coatings – Процена броја и величине дефеката и интензитета уједначених промена изгледа – Парт 10: Assessment of the degree of filamentous corrosion

1 Обим
This document specifies a method for assessing the amount of filamentation corrosion produced by marking by measuring the length of the longest filament, Л, and the common length, М.

The graphical examples provided in Annex A to this document illustrate the different levels of the degree of filamentous corrosion. Comparing the test panel with the 12 pictures in Annex A does not replace the mandatory numerical assessment (methods 1 или 2).

ИСО 4628-1 defines the system used to specify the number and size of defects and the intensity of uniform changes in coating appearance and Outlines the general principles of this system. The system is particularly suitable for defects caused by aging and weathering, as well as uniform changes, such as color changes, such as yellowing.

2 Normative references
The following documents are referenced in the text in such a way that some or all of their contents constitute the requirements of this document. За датиране референце, примењује се само наведена верзија. For undated references, the new version of the reference (укључујући све ревизије) примењује.

ИСО 13076, Боје и лакови – Lighting and procedures for visual assessment of coatings

ИСО 4628-10-2016 – Assessment of ageing of paints and varnish coatings – Процена броја и величине дефеката и интензитета уједначених промена изгледа – Парт 10: Assessment of the degree of filamentous corrosion

3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

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

– ISO online browsing platform: available at iso.org/obp

– IEC Electronic Encyclopedia: доступно на елецтропедиа.орг/

3.1 Filamentous corrosion

The type of corrosion that occurs in the form of threads under coatings of paints, лакови, or related products, usually starts with exposed edges or local damage of the coating

Белешка 1: Usually the length and growth direction of the lines are irregular, but they can also be almost parallel and roughly equal in length. They usually follow the extrusion direction and do not cross each other. They need to be triggered by invasive ions.

[Извор: ИСО 4623-1:2018, 3.1]

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