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What are the functional nano coatings for textile use?

Time : 2020-06-15 Hits : 18

The addition of nanoparticles can improve the performance of traditional coatings or prepare new functional nano coatings. The new functional nano coatings can give textiles good functions and are widely used in textile printing and dyeing processing.

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Thermal insulation cooling nano coatings


Thermal insulation textiles can effectively relieve people's discomfort caused by prolonged exposure to sunlight or high temperature environment, forming a better protective effect on the human body. Nanometer thermal insulation coating is the most commonly used method to prepare thermal insulation textiles. Functional nanometer coatings can effectively improve the thermal insulation and cooling performance of textiles.


Nano waterproof coating


The preparation of waterproof fabric is usually to add a waterproof coating on the surface of the fabric. The excellent waterproof property of the coating is used to give the fabric a waterproof function. However, the waterproof property of the coated fabric made of traditional waterproof coating is not stable and has poor durability. If the fabric is in a humid climate for a long time (such as walking outdoors on a rainy day for a long time), it is very important to ensure the excellent and durable waterproof performance of the fabric. The combination of nanomaterials and coatings makes the waterproof coating improve its waterproof performance and durability to a certain extent.

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Nano antibacterial paint


Currently, the most mature nano antibacterial coatings are nano TiO2 coatings, whose antibacterial mechanism is to kill or inhibit the growth of microorganisms by utilizing the reactive oxygen species and free radicals generated by the photocatalytic oxidation characteristics of nano TiO2. Xu Ruifen et al. prepared antibacterial coating by dispersing nano-meter TiO2 after surface treatment into phenylpropyl emulsion and carried out antibacterial effect test. The results showed that the antibacterial coating had a killing rate of more than 99% for Staphylococcus aureus, Escherichia coli, Bacillus subbacillus, etc., with a strong bactericidal effect and long-lasting antibacterial effect.


Similarly, nano-znO can be decomposed to form electron-hole pairs under light conditions, and combine oxygen or water in the air to produce reactive oxygen species and free radicals, which can kill most bacteria and viruses.

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Nano-paint ink for inkjet printing


Ink-jet printing is a contactless, dot matrix, clean and environmentally friendly textile printing process. The dye inks used in digital ink-jet printing of textiles have poor light fastness, long production cycle and environmental pollution, so it is difficult to popularize and apply. Relative to the dye ink, paint ink has strong commonality, the craft is simple, won't produce floating color and more advantages, such as environmental protection, but at present domestic textile ink jet printing coating performance and stability of the ink is poorer, printing the fabric properties, such as water resistance, resistant to wet rubbing were lacking, these are serious hindered the widespread promotion of inkjet printing technology.

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