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What is the AATCC test method 16 color fastness to light?
2023/08/14
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AATCC Test Method 16 is a standard developed by the American Association of Textile Chemists and Colorists (AATCC) for evaluating the colorfastness of textiles to light exposure. This method assesses how well textile materials retain their color when subjected to various levels of light exposure, simulating conditions such as sunlight and artificial lighting.
The AATCC Test Method 16 specifically focuses on colorfastness to daylight, which is an important factor in assessing the durability and quality of textiles used in outdoor or exposed environments. The method involves exposing textile samples to a controlled light source, typically a xenon arc lamp, that simulates the spectrum and intensity of natural sunlight.
The key steps of AATCC Test Method 16 include:
1. Sample Preparation:
Test specimens are prepared from the textile material being evaluated. These specimens may be subjected to any necessary pre-treatments or conditioning, depending on the specific requirements of the test.
Test specimens are prepared from the textile material being evaluated. These specimens may be subjected to any necessary pre-treatments or conditioning, depending on the specific requirements of the test.
2. Exposure to Light:
The prepared specimens are exposed to the controlled light source, simulating various light intensities and exposure times. The exposure conditions can be adjusted based on the specific testing requirements and the desired level of colorfastness evaluation.
The prepared specimens are exposed to the controlled light source, simulating various light intensities and exposure times. The exposure conditions can be adjusted based on the specific testing requirements and the desired level of colorfastness evaluation.
3. Evaluation of Color Change:
After exposure, the color change of the specimens is assessed using color measurement instruments or visual comparisons. The extent of color change is quantified using color difference calculations.
After exposure, the color change of the specimens is assessed using color measurement instruments or visual comparisons. The extent of color change is quantified using color difference calculations.
4. Rating:
The test results are typically presented as a colorfastness rating, indicating the degree of color change. Ratings are assigned based on established criteria, such as the AATCC Gray Scale for Color Change.
The test results are typically presented as a colorfastness rating, indicating the degree of color change. Ratings are assigned based on established criteria, such as the AATCC Gray Scale for Color Change.
It's important to note that AATCC Test Method 16 evaluates colorfastness to daylight exposure, and it does not cover colorfastness to other factors such as washing, rubbing, or perspiration. This method is specifically designed to assess how well textile colors resist fading or changing when exposed to light conditions over time.
Overall, AATCC Test Method 16 provides valuable information to manufacturers, researchers, and consumers about the colorfastness properties of textiles, helping them make informed decisions about the suitability of materials for specific applications.
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