Research On The Centrifugal Device Of Electrospinning And Its Performance Research

Elctrospinning is a fast, simple, and easy to operate, flexible and diverse forms of technology. The ultra-fine fiber products produced through electrospinning have the properties of small specific surface area, high porosity, small fiber diameter, light weight, morphology uniform and so on. Not only so. Electrospinning can also composite two or more kinds of materials in different ways into the same fibers, which made of the fibers have added many new features. Therefore, since electrospinning rised at the end of2()lh century, just a decade, the number of materials used has developed from a dozen to hundreds and the application areas have developed from filtration, sensing and a few other aspects to biomedicine. tissue engineering, efficient catalytic, charger parts, aerospace equipment and lots of othei sectors and disciplines. However, single-needle electrospinning machine yields of only0.1to1g/h. Extremely inefficient results in high production costs, which causes tremendous obstacles to industrialization and large-scale. Thus, the extensive application of nanofibers is serious impedimentted. Recently, modified single-needle, multi-needle and needleless systems have been introduced to improve the output of nanofibers. Though the productivity is improved, some problems occur in single-and multi-needle electrospinning. such as needle clogging and disturbance of electric field. All of these issues must be resolved. A novel needleless electrospinning setup,"the cupneedleless electrospinning". is developed in this paper. Further investigations of the eletrospinning process and mechanism of this new apparatus are also mentioned.First, a new type of high yield centrifugal electrospinning device is designed. Do research on affection of equipment parameters and process parameters on the spinning process and spinning performance. The optimum conditions are obtained through experiment. Experimental results show that PVA nanofibers can be obtained by this new device and production reached more than80g/min, about100times that of conventional single-needle device. The results of orthogonal experiments show that nanofiber diameter and the concentration of a spinning solution, rotor speed and voltage have a great relationship. Optimal solution are obtained by visual analysis and analysis of variance based on the experimental results. Considering the advantages and disadvantages of the apparatus, liquid metering pumps are increased and a new rotor structure is designed. The PVA fiber mat with a diameter of200-400nm are got. Compared with the original device, after transformation, the liquid supply is more stable, the diameter of the fibers obtained is more uniform. Concluded the full text, and draw the relevant conclusions, and proposed further explore the direction.