New sort of introduction

Nanometers are a unit of length. One nanometer is one billionth of a meter, which is one thousandth of a micron. This length is equivalent to a width of 3 to 4 atoms. Compared to meteorology, it mentions that atmospheric pollution is also much smaller (PM2.5 particles). The diameter of the nanoparticle we mentioned now is generally 1~100nm. Nanomaterials have four major effects: small size effect, surface effect, quantum size effect, and quantum tunneling effect. Therefore, nanomaterials have characteristics different from general materials, which is the magic of nanomaterials. At present, there are many practices in the application of nanotechnology in textile finishing, and examples have been applied in the following aspects.

Application examples of nanotechnology in textile finishing

1, nano antistatic

Nanoscale particles such as titanium dioxide, zinc oxide, and ferric oxide with semiconducting properties can be added to the finishing liquid, and the finished fabric has good electrostatic shielding performance, which can greatly improve safety.

2, nano far infrared function

With titanium dioxide, silicon dioxide, aluminum oxide and other nanoparticles combined with polymer fibers can have a strong absorption of the mid-infrared wave, and thus have a strong shielding effect on the infrared controller, can be used for military and Medical.

3, nano antibacterial

Some inorganic antibacterial elements such as silver, copper, zinc, sulfur, arsenic, etc., as well as nano-sized titanium dioxide, silica and other materials can kill bacteria in the fabric. At present, China's nano-silver inorganic antibacterial fiber has passed the national level identification.

4, nano-UV, anti-magnetic function

Nano-scale ceramic powders (including titanium dioxide, silicon dioxide, zinc oxide, etc.) can be added to human fibers to shield ultraviolet rays. In addition, electromagnetic radiation can be absorbed to protect human health.

5, waterproof, anti-oil function

The textile material is specially processed to form a nano-interface on the surface. The interface has the functions of waterproof and oil proof. The treated interface also has the effects of sterilization, anti-mildew, anti-radiation and the like, and does not require cleaning with a detergent. Wash it with water.

Second, the application of nanotechnology and risk

The application prospect of nanotechnology is very broad, and there are many new directions in the development of textile products. For example, there are prospects for the development of high-performance fibers such as hygroscopic fibers, discolored fibers, aromatic fibers, heat-resistant fibers, magnetic fibers, and flame-retardant fibers. It can also act as a catalyst in wastewater treatment.

In the application of nanotechnology, there are still some technical problems to be solved, the application of nanotechnology in textile finishing is not mature enough, let alone promotion and popularization. At present, many people are shaky in the market

In dyeing nano-products, the level of materials actually used has not reached the nano level, and the most important thing is that there is nothing special about its finishing effect, and it is necessary to stay awake. At the same time, there are also data that, while nanomaterials have excellent performance, their microparticles may also enter human organs and may cause genetic mutations. The health hazards of this nanoparticle to human health are still not yet predictable. While we are paying attention to the application prospects of nanotechnology, we should also be alert to the potential risks that nanoscale materials may bring to human health and the environment.