Abstract: Using the test method 3 in the national standard GB/T 8427 — 2008 Textiles - Tests for color fastness - Color fastness to artificial light: Xenon are fading lamp test, the test is carried out based on the light fastness index≥level 3. By analyzing the influence of irradiance, temperature, humidity and other factors on the color fastness to daylight, the best test conditions were obtained, that is, irradiance was 1.3 W/m2, temperature was 60 ℃, and humidity reached 40%. 72 samples were selected for verification, and the results showed that for most samples, selecting≥3 level index for testing will not change the final judgment of the samples.

Key words: textiles; color fastness to daylight; factors