To know how pearl chiffon dress fabric does not fade, first understand why pearl chiffon dress fabric does fade.
Cellulose fibers such as pure cotton are usually dyed with anionic water-soluble dyes such as direct dyes and acid dyes, which are complete in color and bright in color. However, because of the water-soluble groups on the structure of such dyes, the dyes are hydrophilic, and the colors on the clothes are prone to fade and fade when washed. The fading process causes clothes to look stale; At the same time, the dye hydrolyzed into the dye solution will reverse stain cotton clothes, resulting in staining, matching color phenomenon.
fixation
Speaking of which, I will give you a concept, solid color. As the name suggests, color fixing is to improve the color fastness of the fabric; The additives that can improve the fastness of various kinds of dyeing are called color fixing agents. Next, I systematically explain how to solve the problem of fading and staining of cotton clothes from the source.
The working mechanism of color fixing agent:
First of all, the dye is dyed on different fibers, and the dyeing mechanism and dyeing fastness are different, so the fixing mechanism and application of the fixing agent are also different.
(1) Using cationic groups such as quaternary ammonium salt or tertiary amine salt in the color fixing agent molecule to bond with anionic groups in the structure of ionic dyes, so that dyes and color fixing agents form insoluble color blocks on the fibers, thereby improving the color fastness of dyes on the fabric.
(2) Use the reactive groups in the color fixing agent molecules to cross-link the reactive groups on the dye molecules and the hydroxyl groups on the cellulose molecules to reduce the water solubility of the dye.
(3) The film forming performance of the fixing agent on the fabric is used to improve its dyeing fastness. In the high temperature drying process of the dye-fixing agent treated fabric, the reactive interlocking groups on the dye-fixing agent molecules cross-link themselves into macromolecules, forming a protective film with a certain strength on the surface of the fabric and fiber, and coating the dye on the fiber, so that the dye is not easy to fall off.
Type of fixing agent
From the principle of color fixing agent, we can divide color fixing agent into two main categories: reactive color fixing agent and non-reactive color fixing agent.
Reactive color fixing agent refers to the introduction of reactive groups in the molecules of the color fixing agent, commonly used is epoxy group, this kind of color fixing agent can form covalent bonds with some groups in the fiber dye molecules, which is more favorable to the improvement of dyeing fastness.
Non-reactive color fixing agent refers to two kinds of film forming and sealing water-soluble groups on the fiber surface, and its main types are divided into cationic color fixing agent and resin type color fixing agent.
Daily washing protection act
1, the use of care laundry detergent: laundry detergent is easier to rinse, not easy to fade, do not hurt hands, prevent static electricity; Laundry detergent generally contains softeners, so it is softer, comfortable and bright as new than washing powder.
2, reverse drying method: the clothes in turn to dry, can prevent ultraviolet light directly irradiate most fabrics and produce fading, especially for some dark clothes is particularly effective. Bright colored clothes try to dry clothes in a ventilated place away from light.
3, black, red and blue clothes easy to fade, it is best to soak and clean separately.
For pure cotton clothing, we can only pay attention to daily washing protection. If you want cotton clothes that are not easy to fade, it is best to choose mid-to-high price clothes. The fabric of medium and high price clothes will basically have solid color, and the color of the clothes will be more lasting, more beautiful, and more comfortable to wear.
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