Xenon lamp aging test chamber test principle:
1. A xenon arc lamp with a suitable filter is used as the light source to simulate the spectral irradiance in the ultraviolet and visible spectral regions of the total daily radiation spectrum.
2. In a controlled environment, the sample is exposed to different levels of light, heat, relative humidity and water conditions.
3. Optional variable exposure conditions:
a) Light filter;
b) irradiance;
c) temperature when exposed to light;
d) Relative humidity in the test chamber during the xenon arc lighting/dimming cycle when humidity needs to be controlled;
e) Wetting method of the test sample;
f) Water temperature and wetting cycle;
g) The relative duration of the shining and dimming periods of the xenon arc light.
4. Wetting is achieved by spraying the test sample with softened water/deionized water, immersing the sample in water or condensing water vapor on the surface of the exposed sample.
5. The test process includes the measurement of UV irradiance and UV irradiance on the specimen plane.
6, it is recommended that a similar material (control) with known properties be exposed to the test sample at the same time to provide a comparison test.
(7) Test results exposed to different devices should not be compared unless a suitable statistical relationship has been established between the different devices used to test the particular material.
General requirements:
The light source of the xenon lamp aging test chamber shall consist of one or more xenon arc lamps with a quartz envelope, whose spectral range includes ultraviolet radiation, visible radiation and infrared radiation with a wavelength greater than 270 nm. In order to simulate total daily radiation, a light filter should be used to filter out short-wavelength ultraviolet radiation. In order to simulate the solar radiation after passing through the window glass, a filter that minimizes the irradiance of wavelengths below 310 nm should be used. In addition, a filter can be used to remove infrared radiation to avoid unrealistic heating of the test sample, which can cause thermal degradation of the sample that would not occur during outdoor exposure.
Scope of application
Air-cooled xenon lamp aging test chamber is used to simulate the artificial aging characteristics of various automotive parts and interiors, electronic instrument panels, printing and dyeing, dyes, decorative materials, etc. By setting the conditions of solar irradiation energy, temperature, humidity, and alternating day and night of various climates in the test chamber, the simulated natural environment required by the standard is provided to test the performance changes of the material such as fading, aging, softening, hardening, cracking and so on.
Control system
1. Display: 7-inch color touch screen human-machine interface;
2, operation language: Chinese display;
3, operation mode: the program can run (dark, light cycle mode) or fixed value operation;
4, test standards: xenon lamp aging test chamber according to the self-set value or program operation
5, operation items: blackboard temperature (BPT) or black label temperature (BST), test box temperature, relative humidity, irradiance, xenon lamp temperature, radiation exposure time, overtemperature temperature setting, running time setting, spray time (spray, stop spray cycle) temperature and humidity irradiance running curve monitoring, operating status monitoring, alarm function monitoring;
6, alarm protection function: temperature overtemperature, fan overload, xenon lamp overheating, water shortage, power supply phase, humidifier dry burning and so on. When each fault occurs, the display screen directly indicates the cause and elimination of the machine fault and the linkage protection function starts;
7, data storage: large capacity data storage function, USB port USB disk directly exported.
