Lab Companion UV weathering test chamber is a professional device used to simulate and evaluate the resistance performance of materials under ultraviolet radiation and corresponding climatic conditions for testing outdoor products. Its core function lies in simulating the impact of ultraviolet rays on materials in the natural environment through artificially controlled ultraviolet irradiation, temperature and humidity changes, thereby conducting comprehensive and systematic tests on the durability, color stability and physical properties of materials. In recent years, with the development of technology and the continuous improvement of requirements for material performance, the application of UV weathering test chambers has become increasingly widespread, covering multiple fields such as plastics, coatings, and textiles.
The Q8 system independently developed by Lab can simulate the damage caused by sunlight and rain, and complies with multiple international certification standards. It can be programmed to conduct continuous ultraviolet light and rain weather resistance tests 24 hours a day and 7 days a week. It only takes a few days or weeks to reproduce the damage that occurs outdoors in months or even years, including various phenomena such as color change and powdering. Meanwhile, the Q8/UV2/UV3 are equipped with a standard ultraviolet light detection system, which precisely controls the light intensity. Four sets of UV intensity sensors automatically adjust the energy of the lamp tubes based on the aging state to make compensation, significantly reducing the experimental time and ensuring the reproducibility of the system.
To more realistically simulate the effects of rainwater scouring and cooling, the ultraviolet test chamber is also equipped with a spray system. The Q8/UV3 model is equipped with 12 sets of water spray devices to simulate mechanical corrosion caused by rainwater erosion. When the sample is heated to a high temperature by an ultraviolet lamp, it is sprayed with cold water to generate intense thermal contraction stress, simulating a sudden downpour in summer. The scouring effect of water flow can simulate the erosion of coatings, paints and other surfaces by rainwater, washing away the aged and decomposed substances on the surface and exposing new material layers to continue aging.
A typical test loop is:
Under the set irradiance and high temperature, 4 hours of ultraviolet light is used to simulate daytime sun exposure. With the lights off and high humidity maintained, 4 hours of condensation at night is simulated. During this process, short sprays can be inserted regularly to simulate rainfall.
By intensifying and cycling these key environmental factors, the ultraviolet light test chamber can reproduce within days or weeks the aging damage that materials would take months or even years outdoors, thus being used for product quality control and durability assessment. However, this test is an accelerated experiment, and its results are correlated with those of real outdoor exposure, rather than being completely equivalent. Different materials and testing standards will select different types of lamp tubes, irradiance, temperatures, and cycle periods to obtain the most relevant prediction results.
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