ISO 16474-3:2013
Paints and varnishes — Methods of exposure to laboratory light sources — Part 3: Fluorescent UV lamps
ISO 16474-3:2013 specifies methods for exposing coatings to fluorescent UV lamps, heat and water in apparatus designed to reproduce the weathering effects that occur when materials are exposed in actual end-use environments to daylight, or to daylight through window glass.
The coatings are exposed to different types of fluorescent UV lamps under controlled environmental conditions (temperature, humidity and/or water). Different types of fluorescent UV lamp may be used to meet all the requirements for testing different materials.
Specimen preparation and evaluation of the results are covered in other ISO documents for specific materials.
General guidance is given in ISO 16474‑1. Fluorescent UV lamp exposures for plastics are described in ISO 4892‑3.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
5.1 Laboratory light source
5.2 Test chamber
5.3 Radiometer
5.4 Black-standard/black-panel thermometer
5.5 Wetting and humidity
5.6 Specimen holders
5.7 Apparatus to assess changes in properties
6 Test specimens (panels)
6.1 General
6.2 Preparation and coating
6.3 Drying and conditioning
6.4 Thickness of coating
6.5 Number of test panels
7 Test conditions
7.1 Radiation
7.2 Temperature
7.3 Relative humidity of chamber air
7.4 Condensation and spray cycles
7.5 Complex cycles with dark periods
7.6 Sets of exposure conditions
8 Procedure and mounting of the test specimens
8.1 General
8.2 Exposure
8.3 Measurement of radiant exposure
8.4 Determination of changes in properties after exposure
9 Test report
Annex A (informative) Spectral distribution of radiation for typical fluorescent UV lamps
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
5.1 Laboratory light source
5.2 Test chamber
5.3 Radiometer
5.4 Black-standard/black-panel thermometer
5.5 Wetting and humidity
5.6 Specimen holders
5.7 Apparatus to assess changes in properties
6 Test specimens (panels)
6.1 General
6.2 Preparation and coating
6.3 Drying and conditioning
6.4 Thickness of coating
6.5 Number of test panels
7 Test conditions
7.1 Radiation
7.2 Temperature
7.3 Relative humidity of chamber air
7.4 Condensation and spray cycles
7.5 Complex cycles with dark periods
7.6 Sets of exposure conditions
8 Procedure and mounting of the test specimens
8.1 General
8.2 Exposure
8.3 Measurement of radiant exposure
8.4 Determination of changes in properties after exposure
9 Test report
Annex A (informative) Spectral distribution of radiation for typical fluorescent UV lamps
Bibliography