Characteristics of UV aging test chamber products and control of radiation intensity


The UV aging test chamber can simulate the hazards caused by sunlight, rainwater, and dew. UV uses fluorescent UV lamps to simulate the effect of sunlight, and uses condensed water to simulate rain and dew. Ultraviolet radiation can reproduce the hazards that occur outdoors for months to years within a few days or weeks. Ultraviolet has a high radiation intensity, effectively shortening the time period for testing and simulation, and is suitable for performance testing of photovoltaic modules. Ultraviolet rays in natural light are the main factor contributing to the aging of outdoor materials. After ultraviolet radiation on the surface of an exposed object outdoors, photochemical reactions occur, causing the molecules of the object to dissociate into atoms, single molecules, or free radicals, leading to material aging and deterioration, fabric discoloration, coating cracking, powdering, discoloration, and other phenomena.

The UV aging test chamber uses fluorescent UV lamps that can best simulate the UV spectrum in sunlight, combined with temperature control and humidity supply devices, to simulate materials that cause discoloration, brightness, and intensity decrease; Cracking, peeling, crushing, oxidation, etc. Damaged sunlight (UV segment), high temperature, high humidity, condensation, dark cycling, and other factors, and through the synergistic effect between UV and moisture, the single light or single moisture resistance of the material weakens or fails. Therefore, it is widely used for evaluating the weather resistance of materials. This device has the best simulation of solar ultraviolet radiation, low maintenance costs, and is easy to use. The device uses a program controller to automatically run the testing cycle, with a high degree of automation, good light stability, and high reproducibility of test results.

Dongguan Hongjin Testing Instrument Co., Ltd.was founded in June 2007 It is a high-tech manufacturing company that specializes in the design and automatic control of large-scale non-standard testing equipment like simulated environmental testing, material mechanics testing, optical dimension measurement, vibration impact stress testing, new energy physics testing, product sealing testing, and so on! We serve our customers with the utmost passion, adhering to the company concept of “quality first, honesty first, committed to innovation, and sincere service,” as well as the quality principle of “striving for excellence.”

How to control the irradiance of the UV aging test chamber?

1. Light source selection: Different types of light sources can be used to control irradiance. Ultraviolet lamps are one of the commonly used light sources that can emit ultraviolet light. According to the experimental requirements, different types and powers of ultraviolet lamps are selected to control the intensity and wavelength of irradiance.

2. Distance adjustment: Adjusting the distance between the test sample and the ultraviolet lamp can affect the intensity of irradiance. The closer the distance, the higher the irradiance; The farther the distance, the lower the irradiance.

3. Time control: The length of irradiation time can also have an impact on irradiance. The longer the irradiation time, the higher the irradiance; The shorter the irradiation time, the lower the irradiance.

4. Cover filter: Using different types of filters can selectively filter out unwanted radiation wavelengths, thereby controlling the composition of irradiance. By selecting appropriate filters, the radiation intensity of different wavelengths such as UV-A, UV-B, and UV-C can be adjusted.

By comprehensively applying the above methods, the irradiance of the UV aging test chamber can be flexibly controlled according to specific test requirements.

Post time: Nov-15-2023
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