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  • Light fastness


    Light fastness Sunlight has wave-particle duality, and the sunlight that transfers energy in the form of photons has a strong impact on the molecular structure of the dye. When the basic structure of the coloring part in the dye structure is destroyed by photons, the color of the light emitted by th Read More

  • How to improve the light fastness of textiles?


    1. The choice of dye or paintThe light-fading mechanism of dyes is very complicated, but the main reason is that the dyes are excited after absorbing photons, and a series of photochemical reactions occur to destroy the structure, leading to discoloration and fading. The light fastness of textiles m Read More

  • What are the benefits of polyester cloth?


    Polyester fabric is not only strong and durable, but also has the characteristics of good elasticity, resistance to deformation, corrosion resistance and good light fastness. It is a kind of chemical fiber clothing fabric that is used very much in daily life.The conventional process of pure polyeste Read More

  • What is light fastness


    The fading and discoloration of dyed fabrics is a relatively complicated process. Under the action of sunlight, the dye absorbs light energy and the molecule is in an excited state. It is unstable. The energy obtained must be released in different forms to become a stable state. One of the forms is Read More

  • What are chlorine fastness and sweat-light fastness?


    Reactive dyes generally have poor chlorine fastness, which mainly depends on the molecular structure of the color body. There are sulfonic or carboxylic acid groups at the ortho position of the diazo group of the dye, or there are sulfonates at the ortho or para position of the hydroxyl group of the Read More

  • Why does the dye fade under the sun?


    Factors affecting the light fastness of dyes 1. The wavelength of the light source and the irradiated light; 2. Environmental factors; 3. The chemical properties and organizational structure of the fiber; 4. Bonding strength between dye and fiber; 5. The chemical Read More

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