EN 14836:2005 – Synthetic surfaces for outdoor sports areas – Exposure to artificial weathering
This European Standard specifies a method for the exposure of synthetic surfaces for outdoor sports areas to artificial weathering in order that the resulting changes in properties can be determined as detailed in the relevant product specification. 2 Normative references The following referenced documents are indispensable for the application of this European Standard.
For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN ISO 4892-1:2000, Plastics – Methods of exposure to laboratory light sources – Part 1: General guidance (ISO 4892-1:1999) EN ISO 4892-2:1999, Plastics – Methods of exposure to laboratory light sources – Part 2: Xenon-arc sources (ISO 4892-2:1994)
EN ISO 4892-3, Plastics – Methods of exposure to laboratory light sources – Part 3: Fluorescent UV lamps (ISO 4892-3:1994) 3 Principle Specimens are exposed to UV radiation under controlled environmental conditions. NOTE Fluorescent UV lamps use the emission from a low-pressure mercury arc to excite a phosphor that produces a continuous spectrum in a relatively narrow wavelength interval, which is generally distributed about a peak wavelength.
The spectral distribution of the radiation from a fluorescent lamp is determined by the emission spectrum of the phosphor and the UV transmission properties of the glass tube. Fluorescent UV lamps are generally used to expose material to UV radiation in a limited spectral range. 4 Apparatus Artificial weathering cabinet using fluorescent UV lamps and environmental control having the following features.
a) UV-A 340 nm lamps, in accordance with EN ISO 4892-3 and capable of uniformly applying radiation to the test specimen at an irradiance of 0,80 W/(m 2 /nm) (at 340 nm).
NOTE 1 As many fluorescent lamps age significantly with extended use, the apparatus manufacturer’s instructions on the procedure necessary to maintain the desired irradiance should be followed. NOTE 2 The use of UV-B fluorescent UV lamps or exposure in a xenon arc artificial weathering cabinet is recommended when developing or assessing products intended for installation in environments where high levels of UV exposure might be expected.
b) Exposure chamber, constructed from inert material and that provides uniform irradiance in accordance with item a) and that includes a means of controlling the temperature.
c) Wetting mechanism, either condensation or water spray, to wet the exposed face of the specimen. In apparatus designed to wet the exposed faces of the specimens by means of a humidity-condensing mechanism, the water vapour shall be generated by heating water in a container located beneath and extending across the whole area occupied by the specimens. Specimen holders (completely filled with specimens) shall constitute the sidewall of the exposure chamber, so that the backs of the specimens are