ISO 4892-3:2016
Plastics — Methods of exposure to laboratory light sources — Part 3: Fluorescent UV lamps
ISO 4892-3:2016 specifies methods for exposing specimens to fluorescent UV radiation, heat and water in apparatus designed to simulate the weathering effects that occur when materials are exposed in actual end-use environments to global solar radiation, or to solar radiation through window glass.
The specimens are exposed to fluorescent UV lamps under controlled environmental conditions (temperature, humidity and/or water). Different types of fluorescent UV lamp can be used to meet all the requirements for testing different materials.
Specimen preparation and evaluation of the results are covered in other International Standards for specific materials.
General guidance is given in ISO 4892‑1.
NOTE Fluorescent UV lamp exposures for paints, varnishes and other coatings are described in ISO 11507.
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Foreword
1 Scope
2 Normative references
3 Principle
4 Apparatus
4.1 Laboratory light source
4.2 Test chamber
4.3 Radiometer
4.4 Black-panel/black-standard thermometer
4.5 Wetting
4.5.1 General
4.5.2 Spray and condensation system
4.6 Specimen holders
4.7 Apparatus to assess changes in properties
5 Test specimens
6 Test conditions
6.1 Radiation
6.2 Temperature
6.3 Condensation and spray cycles
6.4 Cycles with dark periods
6.5 Sets of exposure conditions
7 Procedure
7.1 General
7.2 Mounting the test specimens
7.3 Exposure
7.4 Measurement of radiant exposure
7.5 Determination of changes in properties after exposure
8 Exposure report
Annex A (informative) Relative irradiance of typical fluorescent UV lamps
Bibliography
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Foreword
1 Scope
2 Normative references
3 Principle
4 Apparatus
4.1 Laboratory light source
4.2 Test chamber
4.3 Radiometer
4.4 Black-panel/black-standard thermometer
4.5 Wetting
4.5.1 General
4.5.2 Spray and condensation system
4.6 Specimen holders
4.7 Apparatus to assess changes in properties
5 Test specimens
6 Test conditions
6.1 Radiation
6.2 Temperature
6.3 Condensation and spray cycles
6.4 Cycles with dark periods
6.5 Sets of exposure conditions
7 Procedure
7.1 General
7.2 Mounting the test specimens
7.3 Exposure
7.4 Measurement of radiant exposure
7.5 Determination of changes in properties after exposure
8 Exposure report
Annex A (informative) Relative irradiance of typical fluorescent UV lamps
Bibliography