Most of the UV accelerated aging testers are used to test the weathering resistance of paint coatings. Coatings of paints, varnishes and similar materials (hereinafter referred to as coatings) are exposed to artificial or artificial radiation in order to simulate the aging process in the laboratory where natural climatic effects are tested under glass cover. The aging process that occurs with natural weather aging cannot be expected to be related to each other because the factors affecting the aging process are various. Only the important parameters causing aging (the irradiance of the relevant part of the photochemical action of the spectrum, the temperature of the sample, the type of wetting and the wetting period, the relative humidity) are the same or the influence of these parameters is known. In order to anticipate their certain relationship.
The ultraviolet accelerated aging test machine is only required to strictly comply with the specified test conditions. The reproducibility of the results can be improved. Moreover, the consistency between natural climatic aging and artificial climatic aging can also be improved.
In the process of natural climate aging. Solar radiation is the main cause of coating aging. The principle of (sun) radiation exposed to the glass plate is the same. Therefore, simulating this parameter is particularly important for artificial weathering and artificial radiation exposure. Xenon arc radiation sources with different filter systems can change the spectral fraction of the generated radiation, simulating the spectral components of the solar radiation and the ultraviolet and visible range of solar radiation filtered through 3 mm thick glazing, respectively.
The two spectral energy distributions are irradiance values and allowable deviations that describe the filtered optical radiation in the ultraviolet range below the wavelength of 400 mm. In addition, GIE No. 85: 1989 has an irradiance standard of 800 mm in wavelength, and xenon arc radiation can better simulate solar radiation.
Most of the UV accelerated aging testers are used to test the weathering resistance of paint coatings. Coatings of paints, varnishes and similar materials (hereinafter referred to as coatings) are exposed to artificial or artificial radiation in order to simulate the aging process in the laboratory where natural climatic effects are tested under glass cover. The aging process that occurs with natural weather aging cannot be expected to be related to each other because the factors affecting the aging process are various. Only the important parameters causing aging (the irradiance of the relevant part of the photochemical action of the spectrum, the temperature of the sample, the type of wetting and the wetting period, the relative humidity) are the same or the influence of these parameters is known. In order to anticipate their certain relationship.
The ultraviolet accelerated aging test machine is only required to strictly comply with the specified test conditions. The reproducibility of the results can be improved. Moreover, the consistency between natural climatic aging and artificial climatic aging can also be improved.
In the process of natural climate aging. Solar radiation is the main cause of coating aging. The principle of (sun) radiation exposed to the glass plate is the same. Therefore, simulating this parameter is particularly important for artificial weathering and artificial radiation exposure. Xenon arc radiation sources with different filter systems can change the spectral fraction of the generated radiation, simulating the spectral components of the solar radiation and the ultraviolet and visible range of solar radiation filtered through 3 mm thick glazing, respectively.
The two spectral energy distributions are irradiance values and allowable deviations that describe the filtered optical radiation in the ultraviolet range below the wavelength of 400 mm. In addition, GIE No. 85: 1989 has an irradiance standard of 800 mm in wavelength, and xenon arc radiation can better simulate solar radiation.
