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Aging Test for Retroreflective Sheeting

The dimension of retroreflective sheeting sample is selected according to the requirement of the aging test chamber, which shall not be less than 70mm * 120mm.The aging test chamber may take the nitrogen lamp as the light source, and the sample is irradiated by the light with the spectral wavelength 300 nm - 800 nm and the radiation intensity 1000 W/m2 100 W/m2. For the light whose spectral wavelength is less than 300 nm, the radiation intensity shall not be greater than 1 W/m2. With the whole sample area, the deviation of the radiation intensity shall not be greater than ±10%. It is necessary to take the continuous illumination and periodic spraying during the test.

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