Old technology spinning new yarn: nanofibers reach new height

Spinning new yarns into old spinning technology, this achievement of North Carolina State University (NCSU) made scientists and manufacturers suddenly realize that old technology can actually increase the production of nanofibers.

Nanofibers have many advantages such as being porous, water seepage, light weight, etc., and they are widely used in filtration, medical skin regeneration, and energy storage industries. Nanofibers are inexpensive, simple to produce, and have many advantages over traditional fibers. NCSU utilizes electroplating to enable time-integrated production.

Electroplating Spinning is a process in which a liquid polymer is produced at a high voltage by an injection needle. The pins are charged and the polymer solvent is ejected to form fine nano-yarns. Unfortunately, this production technology can no longer be used for large-scale production of nanofibers.

North Carolina physicist Laura. Clarke and Jason, together with textile engineer Russell Qorga and his students, discovered through research that the addition of spinning needle electroplating methods to simple and traditional textile technologies can allow nanofiber production to embark on the path of large-scale flower production. To this end, they published papers in the United States "Nanotechnology" journal, announced a "bowl electroplating needle spinning" technology came out.

Instead of using hypodermic needles, the researchers used a bowl filled with a polyester fluid to perform a short pulse of this liquid material under high pressure. As a result, multiple jets of “spun” nanofibers appeared on the fluid surface, forming an equivalent plane. Yarn spacing.

According to experts, this experiment can be continuously expanded by several dozen times, so that the production of nanofibers can be increased by multiples. One problem to be solved will also soon be a solution. What is even more interesting to scientists is why this technology can only be expanded 40-fold instead of 40,000-fold. What is the correlation between this geometric progression and the arrangement of nanoscopic liquid molecules?

The project was supported by multiple parties in the United States and was directly sponsored by the National Science Foundation and the State Vocational Development Association. The North State Institute of Physics and Mathematics, NCSU Department of Textile Engineering and Department of Chemical Science were deeply involved.

Although this technology utilizes (traditional needle electro spinning) TNE outdated equipment to spin nanofibers, it is an optimized traditional equipment experiment. It is also an adjustable material inflow rate and it can be set. It uses a simple geometric progression and is unique. Innovation. In addition, two sets of polyester systems are used for fiber construction, and inconsistent viscosity and volatility constitute another innovative technology. The initial spraying process is also unique, and it maximizes the synthetic principle of the fiber. Compared with the equivalent nano-fiber production equipment, it has unparalleled superiority and high-speed production capability, so it has received extensive attention in the United States. (China Fiber Inspection)