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 development of the document will be in the introduction and/or in the ISO list of patent claims received (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.

For a description of the meaning of specific ISO terms and expressions related to conformity assessment, and information on ISO’s compliance with WTO principles in Technical Barriers to Trade (ТБТ), please refer to the following URL: Увод – Supplementary Information.

The committee responsible for this document is ISO/TC 35, Боје и лакови, Subcommittee SC 9, General test methods for paints and varnishes.

ИСО 13803-2014 “Paint and varnish paint film 20° reflection; determination of fog shadow”

The second edition eliminates and replaces the technically revised first edition (ИСО 13803:2000). The major technical changes are:

И) symbols have been adapted to the revised version of ISO 2813;

б) Introduction and principles clauses have been added;

ц) Supplementary test conditions have been included in the test report;

д) Normative references have been updated.

Увод
A high quality surface should have a clear and bright appearance. Microstructure can lead to a milky appearance. This effect is described as haze. High gloss surfaces with microscopic texture have low intensity diffuse light adjacent to the main reflection direction. Most of the incident light is in the direction of specular reflection, which will make the surface appear to have a high gloss of image forming quality, but with a milky haziness at the top.

The haze phenomenon can only be seen on high gloss surfaces. Стога, the 20° geometry is used in a similar way to the glossometer. The 20° gloss meter has an aperture range of 1,8 °. Two additional sensors next to the gloss detector measure the intensity of the diffuse light that causes haze. Тако, specular and scattered light are measured simultaneously. To better correlate with visual perception, haze is displayed on a logarithmic scale -the lower the haze reading, the better the surface.

1 Обим
This standard specifies test methods for determining the haze of coatings. This method is suitable for haze measurement of non-textured coatings on flat and opaque substrates.

The use of a 20° geometry means that the method is closely related to the measurement of 20° gloss in ISO 2813. The application of the method aims to improve the distinction between high-gloss surfaces, for example in the field of dispersion properties assessment.

ИСО 13803-2014 “Paint and varnish paint film 20° reflection; determination of fog shadow”

2 Normative references
The following documents are referred to normatively in whole or in part in this document and are required for their application. За датиране референце, примењује се само наведена верзија. For undated references, the new version of the reference (укључујући све ревизије) примењује.

ИСО 1514, Боје и лакови — Test standard panel

ИСО 2808, Боје и лакови — Determination of film thickness

ИСО 2813, Боје и лакови — Determination of gloss values at 20°, 60° и 85°

3 Terms and definitions

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

3.1 Haze
Milky white in high gloss or clear coating

[Извор: ИСО 4618:2014, 2.137]

3.2 Geometry
Identify haze measurements that use a specified Angle and a specified aperture

[Извор: ИСО 2813:2014, 3.2, modified – the term “сјај” has been replaced with “haze”.

3.3 Haze value
The ratio of the light flux reflected and diffuse scattered from adjacent objects in the specular direction from specified light source and acceptor angles to the light flux reflected in the specular direction from a glass with specular reflectivity of 1,567, specified as 100 on a linear haze scale

Белешка 1: The measurement of haze value is related to the measurement of gloss according to ISO 2813.

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