Old Technology Spinning New Yarn: Nano Fiber To A New Stage

The spinning of new yarns in old spinning technology has made scientists and manufacturers suddenly realize that the achievement of North Carolina State University (NCSU). Obsolete technology The yield of nanofibers can be increased.

　　 Nanofibers It has many advantages, such as porous, permeable and lightweight. It has great potential from filtering to medical skin regeneration, and then to energy storage industry. purpose Moreover, nanofibers are cheap and easy to produce, and have many advantages that traditional fibers can not compare with. NCSU can realize time integrated production by electroplating spinning.

Electroplating is a liquid polymer produced by injection needle at high voltage. The charged load of the needle will spray the polymer solvent into fine nanoscale yarn. Unfortunately, this production technology can no longer be used for large-scale production of nanofibers.

North Carolina physicist Lara Clark and Jason, together with textile Engineer Russell Qiao Jia and his students, have found that adding traditional needle spinning technology to traditional textile technology can make nanofiber production go on the road of large-scale flower production. To this end, they published a paper in the Journal of nanotechnology, announcing a "bowl type electroplating needle spinning" technology.

Instead of subcutaneous needles, the researchers used a bowl filled with polyester liquid to carry out short pulses on the liquid material under high pressure. Thus, the nanofibers produced by multi jet spinning appear on the fluid surface to form the equal veil spacing.

According to the experts, this experiment can be expanded for tens of times, so that the production of nanofibers can be multiplied. A problem to be solved will soon be solved. What is more interesting to scientists is why this technology can only expand 40 times and not expand to 40 thousand times. What is the correlation between this geometric series and the arrangement of nano liquid molecules?

The project is supported by the United States, supported by the National Science Foundation and the vocational development foundation of the state. The State University of physics and mathematics, the Department of NCSU textile engineering and the Department of chemical science are deeply involved.

Although the technology uses traditional (needle electro spinning) TNE old equipment to spin nanofibers, it belongs to an optimized traditional equipment experiment. It is also an adjustable material input rate, and can also be set up. It uses a simple geometric progression and is a unique innovation. In addition, two sets of polyester systems are used for fiber formation, and inconsistent viscosity and volatility constitute another innovative technology. The initial injection process is also very unique, and the fiber synthesis principle is applied to the extreme. Compared with the same nanofiber production equipment, it has unparalleled superiority and high speed production capability. Therefore, it has received wide attention in the United States.