UV weatherproof test chamber definition: Fluorescent ultraviolet light is used as a light source to simulate the influence of ultraviolet light and humidity in sunlight, and temperature on polymer materials. The aging of materials includes fading, loss of light, strength reduction, cracking, flaking, chalking, Oxidation and many other things.
1. In the outdoor direct exposure test or the ultraviolet segment exposure test, the surface temperature of different color samples has a large difference, while the fluorescence of the fluorescent ultraviolet lamp contains almost no visible light and infrared rays, and the thermal effect generated by the radiation is small. The temperature of the sample is mainly determined by the ambient air temperature, which affects the exposure test of the fluorescent UV lamp and other exposure test methods.
Second, there are many kinds of lamps that can be used in the UV weatherproof test chamber test, and there are definitely differences in the total ultraviolet energy and the spectrum of different ultraviolet light emission. This difference may cause different test results. Which one to choose? It is very important to test the lamp.
The UV lamp is divided into domestic and imported lamps. The domestic lamp has a short life and is not suitable for long-term aging test. The imported lamps are divided into UVA-340 and UVB-313 lamps. The wavelengths of the lamps are different, and the irradiation intensity will also be different. Variation, the service life is up to 1800~2500 hours.
3. Condensation is often used during the UV accelerated aging test chamber test to simulate condensation in the atmospheric environment.
Fourth, whether the material can be sliced ​​and treated. The UV-resistant weatherproof test box is only suitable for aging of the sliced ​​material. Because the lamp is far from the test object, it is widely used in the market. Shanghai Linpin creates a special UV weatherproof test box for customers.
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