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The climatic environment has a greater impact on the aging of organic matter, pigment discoloration, and metal corrosion. Therefore, the aging test is increasingly emphasized by the rubber, plastic, paint, petrochemical, automotive and textile industries. There are many climate and environmental factors, such as sunlight, temperature, humidity, rain, and condensation; harmful gases, dust, etc. It is not comprehensive enough to evaluate the performance of a material through a single environmental factor test. It often passes multiple factors. The combination of tests to simulate natural conditions as much as possible to make a more accurate assessment. Although outdoor exposure tests have a good degree of truth, due to different regions, the climatic conditions vary from season to season. Therefore, the importance of the test is poor. At the same time, as the quality of the sample material continues to increase, the cycle of exposure tests becomes longer and longer and cannot meet the needs of continuous development of scientific research and production.
The technical core and light source characteristics of the bench-top xenon test chamber :
Benchtop xenon lamp weatherproof test chamber can automatically monitor the temperature; configure the radiometer, the voltage regulator can be used to regulate the light irradiance by the voltage rectifier, so that the irradiance can be stabilized on the specified illumination, and at the same time, the test Time to control. By simulating UV radiation in natural sunlight, the material was subjected to an accelerated weathering test to obtain the results of weatherability of the material.
The benchtop xenon test chamber light source uses a visible light xenon lamp rated at 2500W. The light emitting spectrum energy installed on the top of the lamp in the instrument is mainly concentrated at the wavelength between 300~780nm;
According to the test spectrum, the irradiance does not exceed 1 to 3 times the irradiance of the corresponding sun (sunshine at 5 o'clock in the summer at noon);
As the fluorescence light energy output will gradually decay over time, in order to reduce the impact of the test due to light energy attenuation, and GB/T 19394-2003No. 5-a requirements for radiation uniformity ± 15%, the test box designed Sample test pieces are highly adjustable.
Technical Core and Light Source Characteristics of Bench-top Xenon Test Chamber
The xenon lamp weather resistance test chamber has six environmental factors such as light, rain, humidity, condensation and military standard 150, and can be independently adjusted. The xenon lamp is used as a light source and has a spectral distribution similar to that of sunlight. Therefore, the xenon lamp simulates the sun. Light. At the same time, a wide adjustment range of temperature and humidity is provided for regulation, and an independent circulation system is adopted for rain shower. Therefore, if necessary, harmful gas substances can be added to the rainwater supply source. Changing the cooling water temperature of the sample rack can adjust the amount of condensation on the surface of the sample and the surface temperature of the sample. Therefore, the xenon lamp weather resistance test box can be used as a multi-factor weatherproof combination test.