Popular science | More than just antibacterial, multi-functional antibacterial textile development

With the continuous improvement of living standards, people pay more attention to the functionality of clothing. Products with only one additional feature no longer have a competitive advantage in the market. Therefore, versatile textiles have emerged.

Antibacterial non-iron textiles

The polycarboxylic acid finishing agent is the formaldehyde-free non-iron finishing agent which has the greatest potential to replace the N-methylolamide compound. The natural antibacterial agent chitosan is mixed with the polycarboxylic acid, and the antibacterial and non-scalding effect can be obtained by finishing the same on the fabric with the bath. The textile laboratory of the University of California, Davis, conducted experiments on citric acid, butane tetracarboxylic acid and chitosan for fabric finishing. The bacteriostatic rate of the finished fabric was still 30 times after washing under standard conditions. More than 72% (test strain is E. coli).

Since the relative molecular mass of the commercially available chitosan is generally large, the elastic recovery angle of the fabric after the chitosan finishing is increased, but the hand feels hard, the cloth surface is yellow, and the hygroscopicity is lowered. By reducing the relative molecular mass of chitosan, it can enhance its penetrating power and improve antibacterial properties. Practice has proved that the use of polycarboxylic acid and degraded chitosan to finish the cotton fabric can impart the dual functions of antibacterial and non-scaling of the fabric, and at the same time can significantly improve the mechanical properties of the fabric and inhibit the damage of the tear resistance of the fabric by polycarboxylic acid finishing. .

Antibacterial and anti-transparent textile

In some textile applications, such as medical clothing, not only need to have antibacterial function, but also must be anti-transparent and whitening treatment. In order to increase the whiteness in the antibacterial finishing process, a whitening agent can be added to the antibacterial liquid at the same time. When the fabric after the antibacterial finishing is whitened, since the fibers are coated with the crosslinked resin, the reactivity of the fibers with the whitening agent is lowered.

Therefore, in the whitening process of the antibacterial anti-transparent whitening product, the amount of the fluorescent whitening agent can be increased, the time of the whitening process can be prolonged, and the parameters such as the rolling rate can be lowered to obtain a better whiteness. Therefore, in the antibacterial and anti-transparent textile processing process, a new high-temperature-resistant and water-resistant whitening agent can be used, so that the antibacterial and anti-transparent whitening finishing can be completed in the same bath.

Antibacterial health textiles

Shenzhen Kangyi Company uses nanotechnology to develop a new antibacterial fabric containing vitamin E and vitamin C derivatives. The garment made from this fabric heats the nanocapsules in the fabric by body temperature, thereby releasing the substances in the microcapsules to the skin. on. The vitamin C derivative is absorbed by the body after being exposed to the temperature of the human skin, and then converted into vitamin C.

A T-Shirt made of this fabric contains vitamin C equivalent to two lemons, and contains trace elements of selenium and strontium, which can moisturize the skin, make the skin elastic and shiny, and have good antibacterial effect on human skin. Protective effect. In addition, the product has good moisture absorption and moisture retention and is capable of withstanding about 30 washes.

Negative ion antibacterial textile

For negative ion finishing, Japan KOMATSU SEIREN has successfully developed a finishing technology for fixing certain natural minerals that produce negative ions on fabrics - "VERBANO", which can be applied to sportswear, outerwear, Underwear, uniforms, gloves, shoes and hats. , curtains and other fields; Toray (TORAY) has developed a comfortable finishing technology "AQUAHEAL", which can produce negative ions through friction and vibration during the wearing process, and after 40 times of household washing effect It can retain about 75%; Beijing Jieer Shuang Company has developed JLSUN® 888, an anion far-infrared finishing agent for natural fibers, which can impart dual functions to fabrics by successively impregnating or padding negative ion far-infrared finishing agents and antibacterial finishing agents. .

This kind of negative ion antibacterial textile has antibacterial, deodorant, anti-mildew and antipruritic effects, and is excellent for harmful bacteria such as MRSA, Staphylococcus aureus, Neisseria gonorrhoeae, Klebsiella pneumoniae, Escherichia coli, Pseudomonas aeruginosa and Candida albicans. Antibacterial effect, while not degrading the fabric performance, resistant to dry cleaning and washing, no irritation to the skin, no allergic reactions and other side effects.

Antibacterial UV protection textiles

Ultraviolet light in the sun will not only fading and embrittlement of textiles, but also cause sunburn and aging of human skin, producing pigments and pigment spots, and more serious, causing cancer and endangering human health. While resisting the scorching sun, the prevention of sweat odor caused by sweating of the human body makes antibacterial and anti-UV textiles one of the important goals of the industry to develop new products .

For UV protection, CIBA Switzerland introduced the anti-UV finishing agent CIBAFAST PEX, Germany HERST company launched HYUV 100, and the domestic industry used SCJ-966. UV-resistant finishing agent SCJ-966 is a non-ionic light brown liquid. It is easy to solidify at low temperature. It should be used after heating and stirring in water bath. It is suitable for UV-proof finishing of cotton, linen, silk, wool, polyester and nylon fabrics. Through the two-dip two-rolling antibacterial anti-UV solution, the finished fabric can achieve good protection against ultraviolet rays in the 180-400 nm band, and has excellent antibacterial properties.