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The different selection of ultraviolet aging test chamber (UV) lamp

Simulation of ultraviolet and sunlight

Although ultraviolet light (UV) accounts for only 5% of sunlight, it is the main lighting factor that causes the durability of outdoor products to decline. This is because the photochemical effect of sunlight increases with the decrease of wavelength.

Therefore, it is not necessary to reproduce the whole sunlight spectrum when simulating the damaging effect of sunlight on the physical properties of materials. In most cases, we only need to simulate the UV light of a short wave.

The reason why UV lamps are used in UV aging test chamber is that they are more stable than other lamps and can reproduce the test results better. Using a fluorescent UV lamp to simulate the influence of sunlight on physical properties, such as brightness decline, cracking, peeling, and so on, is the best method.

There are several different UV lamps to choose from. Most of these UV lamps produce ultraviolet light rather than visible and infrared light. The main difference of lamps is reflected in the total UV energy generated by them in their respective wavelength range.

Different lamps used in the ultraviolet aging test chamber will produce different test results. The actual exposure application environment can prompt which type of UV lamp should be selected. The advantages of the fluorescent lamps are fast test results; simplified illumination control; stable spectrum; little maintenance; low price and reasonable operating cost.