The new yarn was spun on old spinning technology, and this achievement at North Carolina State University (NCSU) has made scientists and manufacturers suddenly realize that old technology can actually increase the production of nanofibers.
Nanofibers have the advantages of porosity, water permeability, light weight, etc., from filtration to medical skin regeneration, to energy storage industry, and nanofibers are inexpensive, easy to produce, and have many advantages unmatched by traditional fibers. NCSU enables time-integrated production with electroplated spinning.
Electroplated spinning is a production of a liquid polymer by means of an injection needle at a high voltage. When the pin is charged, the polymer solvent is ejected to form a fine nano yarn. Unfortunately, this production technology cannot be used to produce nanofibers on a large scale.
North Carolina physicist Laura Clark, Jason and textile engineer Russell Joga and his students discovered that nanofiber production can be achieved by adding a needle plating method to simple traditional textile technology. Take the road of large-scale flower production. To this end, they published a paper in the journal "Nanotechnology" in the United States, announcing a "bowl-type electroplating" technology.
Instead of subcutaneously injecting a needle, the researchers used a bowl filled with a polyester liquid to apply a short pulse to the liquid material under high pressure. Thus, the multi-jet "spun" nanofibers appeared on the fluid surface to form an equal surface. Yarn spacing.
According to experts, this experiment can be extended dozens of times in a row, which can increase the production of nanofibers. A problem to be solved will also be introduced soon. What is more interesting to scientists is why this technology can only be expanded by 40 times and cannot be expanded to 40,000 times. What is the correlation between this geometric progression and the arrangement of nano-liquid molecules?
The project is supported by the United States and is directly sponsored by the National Science Foundation and the State Career Development Foundation. The North State School of Physics and Mathematics, NCSU Textile Engineering and the Department of Chemical Science are deeply involved.
Although this technology uses (traditional needle electrospinning) TNE old equipment to fabricate nanofibers, it is an optimized traditional equipment experiment, and the material inflow rate is adjustable, and can also be set. It utilizes a simple geometric series and is a unique innovation. In addition, the fiber composition uses two sets of polyester systems, and the inconsistent viscosity and volatility constitute another innovative technology. The initial jetting process is also unique in that it maximizes the synthesis of the fiber. Compared with the same nanofiber production equipment, it has unparalleled superiority and high-speed production capability, so it has received extensive attention in the United States.
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