Xunke standard, UV aging UV

rb(, , ); n-: Microsoft Yahei, r, Song Dynasty, nr; ; n-: ;">UV aging test mainly simulates the deterioration effect of ultraviolet light in sunlight on products. At the same time, it can also reproduce rain and Damage caused by dew. The test is conducted by exposing the material to be tested to a controlled alternating cycle of sunlight and moisture while increasing the temperature. Ultraviolet fluorescent lamps are used to simulate sunlight, and condensation or spray can also be used to method to simulate the influence of moisture.
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< rb(, , ); n-: Microsoft Yahei, r, Songti, nr; ; n- : .;">Exposure methods are divided into two types:
) A cycle in which the sample undergoes a period of light exposure, followed by a non-irradiation period (when the temperature changes and condensation forms on the sample) Test.
) The sample is subjected to a cycle test of continuous radiation exposure and regular water spraying.
The advantages of fluorescent lamps are: rapid acquisition of test results; simplified illumination control; stable spectrum; requires very little Maintenance; cheap price and reasonable operating costs.
There is only a small part of the land on the earth, and more than half of the area is ocean. Therefore, the ocean climate is a climate environment that has a great impact on human life and material products.
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< rb(, , ); n-: Microsoft Yahei, r, 宋体, nr; ; n-: .;">In just a few days or weeks, UV aging testing can reproduce the damage that would take months or years outdoors. The damage caused mainly includes fading, discoloration, decrease in brightness, powdering, cracking, blurring, embrittlement, decrease in strength and oxidation.
< rb(, , ); n-: Microsoft Yahei, r, Songti, nr; ; n-: .;">There are several different lamps to choose from. Most of these lamps produce primarily UV light, rather than visible light and infrared light. The main difference between lamps is the total energy they produce in their respective wavelength ranges. Different lamps will produce different test results. The actual exposure application environment can indicate which type should be selected lamp.
-, the best choice for simulating sunlight's ultraviolet rays
- Can excellently simulate the sunlight spectrum in the critical shortwave wavelength range, that is, the spectrum in the wavelength range -n, - only produces energy in sunlight Spectra of the wavelengths found.
B-, for maximum accelerated testing
B- can provide test results very quickly. They use shorter wavelengths than are typically found on Earth today. Intense. Although these lights, which are much shorter than natural wavelengths, can speed up experiments to the greatest extent, they can also cause unrealistic degradation of some materials.