Making high-end textiles UV-resistant

maart 30, 2022
blog

UV-resistant treatment is an essential part of the functional textile finish for making high-end textiles UV-resistant. At present, the market prospects of UV-resistant textiles are very broad and the varieties of UV-resistant fabrics are becoming more and more extensive. Such as paragliding, swimsuits, tennis shirts, golf suits and jackets.

Applications

High-energy UV radiation easily causes aging of textile fibers and color fading. Therefore, it is of great importance to improve the UV protection of textiles. Especially those made for outdoor applications (outdoor fabrics) or that need to be waterproof. Anti-ultraviolet fabric is not only used for clothing fabrics, but also for umbrellas and decorative fabrics. In addition, textiles such as uniforms, tents, advertising cloth, tarpaulin, etc. These fields have higher requirements against UV finishing.

Process

During textile processing, the UV absorber determines the overall protection effect. Not only can it protect dyes and fibers of polymer material from destruction under the catalysis of light. More importantly, for applications such as sun umbrellas, it can maintain the health of human skin.

UV absorbers can be applied to fabrics through a fabric post-treatment process, such as dipping and coating, sol-gel, and microwave sputtering. For synthetic fiber (chemical fiber) and nylon fabrics, an UV absorber can be added to the processing bath when dyeing at high temperature and high pressure. This method allows UV absorber to penetrate the fabric without affecting the feel of the fabric. In other words, ideal for making high-end textiles UV-resistant.

Features & requirements

A suitable UV absorber for textiles should meet the following requirements:

  • Safe and non-toxic, no allergic reaction to human body.
  • Satisfy the regulation of environmental protection (green material).
  • Good resistance to common solvents and daily washing.
  • No staining after absorption of ultraviolet light.
  • It has no negative effect on the physical properties of the fabric, such as whiteness, fastness, strength.

Our products

For example, our Omnistab UV P which is a benzotriazole and very cost-effective. It is a high efficient UV absorber with strong absorption in the range of 300-400nm. The UV P is an ideal UV absorber in Polyester and Spandex fiber, which is a chemical fiber material. Another option of a benzotriazole is the Omnistab UV 366. This product has high Molar Extinction Coefficient, which is 2.6 times of Benzophenone and 1.8 times of other benzotriazoles. It has a wide UV absorption in both UV A and UV B band. Especially effective to fibers and inhibits photo oxidation degradation in polyester fiber.

Other effective products in chemical fibers are HALS products like Omnistab LS 5519 and Omnistab LS 292. The Omnistab LS 5519 is a white crystalline powder and specially developed for Nylon applications. The Omnistab LS 292 is a light yellow liquid, suitable for water-based systems. For example, water-based textile finishing agent. Contact us for the best recommendation for your application or projects. Or for any other service you require, we will get back to you within 24 hours.

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