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Experimental conditions for xenon lamp aging tester
2024/08/01
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When conducting sun climate color fastness testing, the sun climate color fastness tester needs to consider multiple factors to ensure the accuracy and reliability of the test results
Light source and wavelength:
Using SZl500 xenon arc lamp as the radiation source, simulate the spectral distribution of sunlight, emitting visible light in the range of 380nm to 750nm and ultraviolet light in the range of 300nm to 380nm.
The wavelength and intensity of the light source directly affect the test results, as different wavelengths of ultraviolet radiation have different destructive effects on materials.
Test conditions:
Set a suitable testing time, which can range from several hours to several days according to the requirements.
Adjust the laboratory temperature (room temperature~80 ° C) and humidity (20%~70%) according to the actual situation, as temperature and humidity can affect the physical and chemical properties of materials.
Consider the rotation and revolution speed of the sample, such as a sample rack revolution of 5 revolutions per minute, with the rotation set according to the testing requirements.
Sample characteristics:
The fiber type, dyeing method, structural density, and thickness of a material can all affect its resistance to sunlight.
The structure of dyes, such as anthraquinone and phthalocyanine dyes, as well as the concentration of dyes, have a significant impact on the color fastness to sunlight.
The differences in sun resistance performance of fiber types and dyes on different fibers also need to be considered.
Environmental factors:
The geographical latitude and altitude of outdoor exposure fields can affect the intensity of ultraviolet radiation.
The local geographical environment, such as wind speed and proximity to water sources, can affect the degree of air drying and dew formation of the test samples.
The annual climate differences and seasonal variations also need to be considered, as different weather and seasons have varying impacts on the samples.
Testing method:
Choose appropriate testing methods, such as sunlight exposure or exposure to a sun machine, to ensure that the testing process complies with relevant standards (such as GB/T8427, ISO105-B02, etc.).
The rating standards adopt two types: wool blue label and gray card, ensuring comparability and accuracy of test results.
Other factors:
Pollutants, additives, and other factors in the air may also affect the color fastness of materials to sunlight.
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