The UV aging test box is an aging test device that simulates light, and is specially designed to simulate products that are placed outdoors for a long time. The destructiveness of the ultraviolet radiation in the sun only takes a few days or weeks, and the equipment can reproduce the damage caused by outdoor months or years. See if the product has fading, discoloration, reduced brightness, chalking, cracking, blurring, embrittlement, strength reduction and oxidation, etc. At the same time, it can also reproduce the damage caused by rain and dew. The UV aging test box conducts the test by exposing the sample to be tested in a controlled alternating cycle of sunlight and moisture while increasing the temperature. (Using ultraviolet fluorescent lamps to simulate sunlight, and also can simulate the effect of moisture through condensation or spraying).
Ultraviolet light (UV) accounts for only 5% of sunlight, but it is the main light factor that causes the durability of outdoor products to decline. There are several different UV lamps to choose from. In most cases, only the short-wave UV light needs to be simulated. Most of these UV lamps mainly produce ultraviolet light instead of visible light and infrared light. The main difference between lamps is the total UV energy they produce in their respective wavelength ranges. Different lamps will produce different test results. The actual exposure application environment can prompt which type of UV lamp should be used.
UVA-340, the best choice for simulating the ultraviolet rays of sunlight. UVA-340 can perfectly simulate the sunlight spectrum of the critical short-wavelength range, that is, the spectrum of the wavelength range of 295-360nm. UVA-340 only produces the UV wavelengths found in sunlight. Spectrum.
UVB-313, used for the most accelerated test. UVB-313 can quickly provide test results. The UV aging test chamber standard defines a fluorescent ultraviolet lamp that emits light energy below 300nm below 2% of the total output light energy, commonly known as It is a UV-A lamp; a fluorescent ultraviolet lamp that emits light energy below 300nm greater than 10% of the total output light energy, commonly known as UV-B lamp.
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Since the time of outdoor exposure to moisture can be as long as 12 hours per day, the humidity cycle of the ultraviolet accelerated weathering test machine generally lasts for several hours. We recommend that each condensation cycle last at least 4 hours. Note that the UV exposure and condensation exposure in the equipment are carried out separately, which is consistent with the actual climatic conditions.
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