Water-cooled xenon lamp aging tester to determine the weathering test of paint and film
The ability of a paint film to resist environmental damage by sunlight, air, water (acid rain), microorganisms, etc. and maintain its original performance is called the weathering resistance of a paint film. Like plastic and other polymer materials, paint film will inevitably be subjected to the interaction of intrinsic and external environmental factors over time, such as discoloration, loss of light, chalking, cracking, rusting, peeling, spotting, staining, and other irreversible damage. Therefore, the quality of the paint, in addition to its appearance, physical, chemical, mechanical properties, more importantly, should be examined its service life, that is, the durability of the paint film itself.DvPTextile Testing Instruments, Testing Equipment Manufacturer DvPTextile Testing Instruments, Testing Equipment Manufacturer The use of water-cooled xenon lamp aging test chamber> for artificially accelerated aging test has become a common weathering test method, the corresponding xenon lamp aging test method is also more, 1S0, ASTM, sAE, JIs, GM, etc..DvPTextile Testing Instruments, Testing Equipment Manufacturer DvPTextile Testing Instruments, Testing Equipment Manufacturer Water-cooled xenon lamp aging test chamber outside the lamp is equipped with two transparent glass tube with the axis of the light, cooling deionized water can be used on the surface of the lamp, the internal and external filters flow between. In addition to cooling the lamp, the deionized water can also absorb some of the excess infrared energy. The main function of the combined filter also lies in the matching of the characteristics of the two different glass, you can get the required energy spectrum distribution. Commonly used filters are: quartz glass, measuring the exact glass, high borosilicate glass, soda lime glass and coated infrared absorbing quartz glass.DvPTextile Testing Instruments, Testing Equipment Manufacturer DvPTextile Testing Instruments, Testing Equipment Manufacturer Transistor in the water-cooled xenon lamp aging test chamber aging test, attention should be paid to the combination of internal and external transistor according to different test standards, otherwise it will produce a different spectrum and the intensity of radiation, causing deviations in the test results. In addition, the deposits and other residues on the filter will also affect the light transmission rate of the filter, so the filter should be regularly cleaned or replaced.