Detail of GB/T 14522-2008

Introduction of GB/T 14522-2008

Artificial weathering test method for plastics, coating and rubber materials used for machinery industrial products — Fluorescent UV lamps 1 Scope This standard specifies one of the artificial weathering test methods for plastics, coating and rubber materials used for machinery industrial products — fluorescent UV lamps exposure test method. This standard is applicable to the weatherability comparison and screening test of plastics, coating, rubber and other materials. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections) to, or revisions of, any of these publications do not apply to this standard. However, parties to agreements based on this standard [are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition applies. GB/T 16422.1 Plastics — Methods of exposure to laboratory light sources — Part 1:General guidance (GB/T 16422.1-2006; ISO 4892-1: 1999, IDT) GB/T 9271 Paints and varnishes — Standard panels for testing (GB/T 9271-1988, eqv ISO 1514; 1984) GB/T 13452.2 Paints and varnishes — Determination of film thickness (GB/T 13452.2-1992, idt ISO 2808: 1974) GB/T 7762 Rubber, vulcanized or thermoplastic — Resistance to ozone cracking — Static strain testing (GB/T 7762—2003, ISO 1431-1: 1989, MOD) GB/T 2941 Rubber — General procedures for preparing and conditioning test pieces for physical test methods (GB/T 2941-2006, ISO 23529: 2004, IDT) 3 Terms and definitions For the purposes of this standard, the following terms and definitions apply. 3.1 file specimen some test materials which are stored under stable conditions and used for comparing the performance changes before and after exposure 3.2 control material with similar composition and structure to the test material, which are used for performance comparison after simultaneous exposure with the test material 3.3 control specimen part of the control material used for exposure 3.4 irradiance radiant energy of the wavelength or band-pass irradiated per unit area per unit time, in W/m2 3.5 radiant exposure time integration of irradiance, in J/m2 3.6 spectral power distribution absolute or relative radiation energy emitted by a light source or received by an object, which is a function of wavelength 3.7 black panel thermometer temperature measuring device that consists of a metal base plate and a thermal sensitive element, the latter being closely attached to the center of the former. The light receiving surface of the whole device is coated with a black coating, which can uniformly absorb all-sunlight spectral radiation 3.8 fluorescent ultraviolet lamp low-pressure mercury arc lamp, with its radiation emitted by the mercury arc converted into longer wavelength ultraviolet radiation by the phosphorus coating and its spectral power distribution depending on the emission spectrum of the mercury arc, the emission spectrum of the phosphorus coating as well as the ultraviolet radiation transmittance of the glass tube 4 Principle

Contents of GB/T 14522-2008

Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Principle 5 Equipment 6 Specimen 7 Test conditions and test duration 8 Procedure 9 Precision and deviation 10 Test report Annex A (Normative) Method for determining relative spectral power distribution of fluorescent UV lamps Annex B (Informative) Excerpts from Table 4 of CIE Publication No. 85: 1989 Annex C (Informative) Examples of typical test conditions Bibliography