Professional understanding of UV aging test chamber

What is UV aging?
UV aging refers to the aging process of materials caused by ultraviolet radiation. It usually occurs when materials are exposed to UV radiation, such as sunlight and artificial UV rays. UV radiation can cause chemical reactions in materials, such as oxidation, fracture and crosslinking, causing changes in the physical and chemical properties of materials. These changes can lead to changes in color of the material, embrittlement, weakening and degradation, etc.

In nature, many substances, such as wood, plastic, rubber, paper and textiles, will age due to exposure to ultraviolet light. In industry and daily life, many products, such as automotive exteriors, building materials, outdoor furniture and textiles, etc., need to undergo UV aging tests by UV aging test chamber to ensure that they can be used in the environment for a long time without failure.

What is a UV aging test chamber?
The UV aging test chamber is an experimental equipment used to simulate the ultraviolet aging environment. It can simulate ultraviolet radiation under the sun, and conduct accelerated aging tests on materials by controlling parameters such as temperature, humidity, ultraviolet wavelength, irradiation intensity and irradiation time to evaluate the weather resistance and durability of materials.

UV Aging Test Chamber

Application field
UV aging test chambers are used in many fields, some of the main applications include:
Material research and development: used to evaluate the durability and life of new materials, and guide the design and selection of materials.

• Automotive industry: used to test the weather resistance of automotive exterior parts, such as body paint, tires, seals, etc.
• Construction industry: used to test the durability of building materials, such as coatings, floors, windows, doors, etc.
• Electronics industry: used to test the weather resistance of electronic product casings and accessories, such as mobile phone casings, TV casings, wires, plugs, etc.
• Medical industry: used to test the weather resistance of medical equipment and appliances, such as surgical instruments, medical plastic products, etc.
• Cosmetics industry: used to test the stability of cosmetics under ultraviolet radiation, such as sunscreen, lipstick, nail polish, etc.

working principle
The working principle of the UV aging test chamber is to simulate the ultraviolet radiation in the sun, and conduct accelerated aging tests on materials by controlling the wavelength, intensity, temperature, humidity and other parameters of the ultraviolet radiation. Specifically, there are ultraviolet lamps inside the UV aging test chamber, and the ultraviolet spectrum produced by them is similar to the solar spectrum, which can simulate different wavelengths of ultraviolet radiation, such as UV-A, UV-B and UV-C. At the same time, the test chamber is also equipped with a temperature and humidity control system, which can control the temperature and humidity in the test chamber according to the test requirements.

During the test, the material to be tested is placed in the test box, and after the test parameters are set, the aging test of ultraviolet radiation and constant temperature and humidity is carried out. The test time can generally be set from several hours to thousands of hours. Through the test of the ultraviolet aging test chamber, the ultraviolet aging conditions in different environments can be simulated, and the rapid aging test can be carried out on the material to evaluate the durability and life of the material. Test results can guide product design and material selection, improve product quality and service life.

Precautions for UV aging test chamber:
1. After a long period of non-use, if you need to use it again, you must carefully check the water source, power supply and various components, and start the device after confirming that it is correct.
2. Because ultraviolet radiation is highly harmful to personnel (especially eyes), operators should minimize exposure to ultraviolet rays (the exposure time should be <1min). It is recommended that operators should wear protective goggles and sheaths.
3. When turning on the machine, the water shortage protection cannot be activated due to lack of water in the water storage tank. This is a normal phenomenon. Please fill up the tap water and start the machine.
4. The equipment is strictly prohibited to be used for testing of flammable, explosive, poisonous and highly corrosive items.
5. The ultraviolet aging test chamber is a precision instrument, and the equipment needs to be calibrated once a year. And pay attention to the life of the lamp tube during use. If the lamp tube cannot reach the set radiation intensity under full power working condition, the lamp tube needs to be replaced.
6. When replacing the ultraviolet lamp tube, be sure to pay attention to the power failure state. And wipe the lamp tube around with a damp cloth to facilitate the removal of the lamp tube. In the process of pulling out the lamp tube, it is necessary to maintain the balance of the two sections of the lamp tube.

The Daily maintenance of UV aging test chamber:
1. If the UV aging tester is not working, keep it dry and disconnect the power supply.
2. After the test, drain the water in the testing machine, and dry the working room and the cabinet.
3. After use, remember to cover the plastic cover to avoid dust intrusion. If there is dust, it should be removed in time.
4. The sensing device in the working room should not be subject to strong impact.
5. The UV aging test chamber is best placed in a well-ventilated place (it is recommended to install a ventilation fan to keep the room ventilated), and it should not be installed in a place with a lot of dust.
6. When the ultraviolet aging test box fails and cannot be eliminated by yourself, please find relevant personnel, and do not disassemble it privately.
7. If the test box is not used for a long time, it is necessary to carefully check the water source, power supply and various components when it is used again, and then start the UV aging test box after confirming that it is correct.