bsen14836-20xxsyntheticsurfacesforoutdoorsportsareasexposuretoartificialweathering

bsen14836-20xxsyntheticsurfacesforoutdoorsportsareasexposuretoartificialweathering内容摘要：

BSI Foreword This European Standard (EN 14836:2020) has been prepared by Technical Committee CEN/TC 217 “Surfaces for sports areas”, the secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2020, and conflicting national standards shall be withdrawn at the latest by June 2020. According to the CEN/CENELEC Internal Regulations, the national standards anizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 14836:2020 (E) 4 Licensed Copy: sheffieldun sheffieldun, na, Tue Oct 31 08:07:38 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 1 Scope 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 48921:2020, Plastics – Methods of exposure to laboratory light sources – Part 1: General guidance (ISO 48921:1999) EN ISO 48922:1999, Plastics – Methods of exposure to laboratory light sources – Part 2: Xenonarc sources (ISO 48922:1994) EN ISO 48923, Plastics – Methods of exposure to laboratory light sources – Part 3: Fluorescent UV lamps (ISO 48923:1994) 3 Principle Specimens are exposed to UV radiation under controlled environmental conditions. NOTE Fluorescent UV lamps use the emission from a lowpressure 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 cabi using fluorescent UV lamps and environmental control having the following features. a) UVA 340 nm lamps, in accordance with EN ISO 48923 and capable of uniformly applying radiation to the test specimen at an irradiance of 0,80 W/(m2/nm) (at 340 nm). NOTE 1 As many fluorescent lamps age significantly with extended use, the apparat us manuf actur er39。 s instructions on the procedure necessary to maintain the desired irradiance should be followed. NOTE 2 The use of UVB fluorescent UV lamps or exposure in a xenon arc artificial weathering。