NF ISO 16474-4

NF ISO 16474-4

December 2013
Standard Current

Paints and varnishes - Methods of exposure to laboratory light sources - Part 4 : Open-flame carbon-arc lamps

ISO 16474-4:2013 specifies methods for exposing specimens to open-flame carbon-arc lamps in the presence of moisture to reproduce the weathering effects that occur when materials are exposed in actual end-use environments to daylight or to daylight filtered through window glass.The specimens are exposed to filtered open-flame carbon-arc light under controlled conditions (temperature, humidity and/or wetting). Different types of filters are used to simulate either direct exposure to the environment or exposure through window glass.Specimen preparation and evaluation of the results are covered in other International Standards for specific materials.General guidance is given in ISO 16474?1. Open-flame carbon-arc exposures for plastics are described in ISO 4892?4.

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Main informations

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National standards and national normative documents

Publication date

December 2013

Number of pages

20 p.

Reference

NF ISO 16474-4

ICS Codes

87.040   Paints and varnishes

Classification index

T30-089-4

Print number

1 - 05/12/2013

International kinship

ISO 16474-4:2013
Sumary
Paints and varnishes - Methods of exposure to laboratory light sources - Part 4 : Open-flame carbon-arc lamps

ISO 16474-4:2013 specifies methods for exposing specimens to open-flame carbon-arc lamps in the presence of moisture to reproduce the weathering effects that occur when materials are exposed in actual end-use environments to daylight or to daylight filtered through window glass.

The specimens are exposed to filtered open-flame carbon-arc light under controlled conditions (temperature, humidity and/or wetting). Different types of filters are used to simulate either direct exposure to the environment or exposure through window glass.

Specimen preparation and evaluation of the results are covered in other International Standards for specific materials.

General guidance is given in ISO 16474?1. Open-flame carbon-arc exposures for plastics are described in ISO 4892?4.

Table of contents
  • Avant-propos
    iv
  • Introduction
    v
  • 1 Domaine d'application
    1
  • 2 Références normatives
    1
  • 3 Termes et définitions
    1
  • 4 Principe
    2
  • 5 Appareillage
    2
  • 5.1 Source lumineuse de laboratoire
    2
  • 5.2 Enceinte d'essai
    7
  • 5.3 Radiomètre
    7
  • 5.4 Thermomètre à étalon noir/à panneau noir
    7
  • 5.5 Équipement de mouillage et de régulation de l'humidité
    7
  • 5.6 Porte-éprouvettes
    8
  • 5.7 Appareillage d'évaluation des modifications de propriétés
    8
  • 6 Éprouvettes d'essai
    8
  • 7 Conditions d'exposition
    8
  • 7.1 Température
    8
  • 7.2 Humidité relative de l'air de l'enceinte
    9
  • 7.3 Cycle de vaporisation
    9
  • 8 Mode opératoire
    9
  • 8.1 Généralités
    9
  • 8.2 Montage des éprouvettes d'essai
    9
  • 8.3 Exposition
    10
  • 8.4 Durée de l'essai
    10
  • 8.5 Mesurage de l'exposition énergétique
    10
  • 8.6 Détermination des modifications des propriétés après exposition
    11
  • 9 Rapport d'essai
    11
  • Bibliographie
    12
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