Color fastness of textiles to water and sweat
Tag:
Textiles Water and Sweat Resistance Color Fastness Fabrics Stained Fabrics
Comparison of test methods for color fastness to water and perspiration
The color fastness to water reflects the discoloration of the textile itself and the staining of the adjacent fabric under the combined action of a certain amount of moisture, pressure and temperature. During the test, after the sample and the backing fabric are fully soaked, they are placed in an oven at a certain temperature for a certain period of time under a certain pressure, then taken out to dry, and the discoloration and staining levels are evaluated. The discoloration and staining grades are divided into 5 levels, with level 5 being better and level 1 being worse.
The color fastness to perspiration reflects the discoloration and resistance of textiles to different test solutions containing histidine under the combined action of pressure and temperature. Staining of the lining fabric. Use a gray card to evaluate the discoloration of the sample and the staining of the backing fabric. The results are divided into 5 levels, with level 5 being better and level 1 being poor.
Methods to improve color fastness to water and perspiration
Improve the water resistance and color fastness of fabrics The most important way to improve the color fastness to sweat is to rationally select dyes, especially dyes with high color fixation rate and good stability. Properly formulate and control the dyeing process, strengthen the fixation conditions, and form highly stable covalent bonds, which can fully fix the dye. For example, when dyeing less reactive dyes, a catalyst can be used, an appropriate fixing agent can be used, or the color can be fixed at a higher temperature.
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