How UV Weathering Test Chambers Work and Run

The main purpose UV aging test chamber is suitable for non-metallic materials, sunlight resistance and artificial light source aging test. It is mainly used to simulate the damaging effects of sunlight, moisture, and temperature on materials; aging of materials includes fading, loss of light, strength reduction, cracking, flaking, powdering, and oxidation.
Kunshan Haida Instrument Technology hereby points out how the UV aging test chamber works and operates during the test:
1. Simulating sunlight: The ultraviolet rays in the sun are the main factors that cause the durability of most materials to be destroyed. In the experiment we used a UV lamp to simulate the short-wave UV part of sunlight, which produces little visible or infrared spectral energy. We can choose different wavelength UV UV lamps according to different test requirements.
2. Moist condensation environment: Studies have shown that the main cause of such outdoor moisture is dew, not rain. Condensation function to simulate outdoor wet erosion. During the condensation cycle during the test, the water in the reservoir at the bottom of the test chamber is heated to generate hot vapor, the sample is fixed on the side wall of the test chamber, and the test surface of the sample is exposed to the ambient air in the test chamber. The outer surface of the sample is exposed to the natural environment, resulting in a temperature difference between the inner and outer surfaces of the sample. This temperature difference causes the sample to always condense liquid water during the entire condensation cycle.
3. UV aging test chamber temperature control: In each cycle, the temperature can be controlled at a set value. The temperature can be monitored by observation during the test. The increase in temperature can accelerate the aging process, and the control of temperature is more important for the reproducibility of the test.
4. Spray system: Water spray can better simulate the environmental conditions of the final use. Water sprays are very effective in simulating temperature shocks and thermal shocks or mechanical erosion due to rain scouring. Under certain practical conditions, such as sunlight, the accumulated heat rapidly dissipates due to a sudden shower of rain, the temperature of the material will change drastically, resulting in thermal shock, which is a kind of thermal shock for many materials. test.