Functional Analysis of ZN-P UV Aging Box

Function Analysis of ZN-P UV Aging BoxJyETextile Testing Instruments, Testing Equipment Manufacturer
Lighting FunctionJyETextile Testing Instruments, Testing Equipment Manufacturer
ZN-P uses ultraviolet light to simulate the harmful effects of sunlight: although only about 5% of ultraviolet light is present in sunlight. But it is the main cause of photochemical damage to durable materials exposed outdoors: this is because as the wavelength decreases, the photochemical effect of light increases. Therefore, when simulating the harm of sunlight to durable products, it is not necessary to reproduce full wavelength sunlight, only short wavelength ultraviolet light needs to be simulated. Due to the fact that ultraviolet light is a diffuse light source, ZN-P can uniformly illuminate the surface of the sample without the need for complex rotation of the sample.JyETextile Testing Instruments, Testing Equipment Manufacturer
JyETextile Testing Instruments, Testing Equipment Manufacturer
Condensation EffectJyETextile Testing Instruments, Testing Equipment Manufacturer
ZN-P simulates the effects of rainwater and dew on the surface of a sample using a * condensation device.JyETextile Testing Instruments, Testing Equipment Manufacturer
. During the condensation cycle, a lower water storage tank in a test chamber is heated to produce steam. Hot steam maintains 100% relative humidity inside the cabin. And there is a certain temperature rise. The sample forms the sidewall of the test chamber, and the cooling effect of the ambient air makes the temperature of the test surface lower than the steam temperature. This temperature difference can continuously condense liquid water on the test surface throughout the entire condensation cycle/ p The condensed water obtained is very stable and pure distilled water, which does not contain dissolved solids, which helps to reproduce the experimental results and eliminates the problem of water stains. Moreover, just like natural dew, newly condensed water is saturated with dissolved oxygen, so it must have erosive force.JyETextile Testing Instruments, Testing Equipment Manufacturer
Another advantage of this * condensation system is that it does not require the use of distilled or deionized water for testing. ZN-P can use regular tap water, which automatically distills during the evaporation process and then condenses onto the sample/ p Due to the humidity that occurs during outdoor exposure for up to 12 hours per day, the wetting cycle of ZN-P usually lasts for several hours. Please note that the UV exposure and condensation processes in ZN-P should be carried out separately, just like under natural climatic conditions.JyETextile Testing Instruments, Testing Equipment Manufacturer
JyETextile Testing Instruments, Testing Equipment Manufacturer
Temperature controlJyETextile Testing Instruments, Testing Equipment Manufacturer
UV cycle period.JyETextile Testing Instruments, Testing Equipment Manufacturer
Photochemical reactions are usually not temperature sensitive. But the rate of any subsequent reaction depends on the temperature. The rate of these reactions increases with increasing temperature. Therefore, controlling the temperature during UV exposure is crucial. In addition, it is necessary to ensure that the temperature of the accelerated aging test is consistent with the high temperature at which the material is directly exposed to sunlight.JyETextile Testing Instruments, Testing Equipment Manufacturer
The UV exposure temperature in ZN-P can be set at any temperature between 50 ℃ and 75 ℃ according to the needs of illumination and ambient temperature. The UV exposure temperature is adjusted by a sensitive temperature controller and an air blowing system to ensure uniformity in the temperature of ZN-P.JyETextile Testing Instruments, Testing Equipment Manufacturer
JyETextile Testing Instruments, Testing Equipment Manufacturer
Wet cycle periodJyETextile Testing Instruments, Testing Equipment Manufacturer
The severity of moisture erosion intensifies with the increase of temperature, so the temperature that controls the wet cycle process is *.JyETextile Testing Instruments, Testing Equipment Manufacturer
And to accelerate the test, it is necessary to conduct a moisture exposure test at higher temperatures. The temperature during the condensation process in ZN-P can be controlled between 40 ℃ and 70 ℃; The temperature of the condensation process is independent of the UV exposure temperature *.JyETextile Testing Instruments, Testing Equipment Manufacturer
JyETextile Testing Instruments, Testing Equipment Manufacturer
Spray functionJyETextile Testing Instruments, Testing Equipment Manufacturer
The ZN-P UV climate resistant test box is equipped with a spray device, which simulates temperature fluctuations and rainwater erosion during rain. There are a total of 8 nozzles, which spray evenly.JyETextile Testing Instruments, Testing Equipment Manufacturer
The spraying time and spraying cycle are freely set by the customer.