Electrostatic spinning device

Abstract

The application belongs to the technical field of electrostatic spinning, and particularly relates to an electrostatic spinning device. In an electrostatic spinning process, the charges injected at high voltage remain inside fibers along with the solidification of electrospinning fibers, thereby affecting the subsequent deposition process of the electrostatic spinning, and finally causing the electrostatic spinning process to terminate. The invention provides the electrostatic spinning device. The electrostatic spinning device comprises a liquid spraying mechanism and an ultraviolet light generating mechanism, wherein the liquid spraying mechanism is matched with the ultraviolet light generating mechanism; and the liquid spraying mechanism comprises a liquid supply assembly and a spray head assembly which are connected with each other, and the liquid supply assembly is connected with a high-voltage power supply. The residual charges in the spinning fibers are dissipated through ultraviolet light, the influence of residual charges on the applied electric field is eliminated, the stability of the electrostatic spinning process is improved, the yield of the spinning fibers and the accumulated thickness of the spinning fibers are greatly improved, the time cost of electrostatic spinning is reduced, and the application range of the electrostatic spinning technology is widened.

Description

technical field [0001] The application belongs to the technical field of electrospinning, and in particular relates to an electrospinning device. Background technique [0002] The electrospinning process is a process in which a high-voltage electrostatic field breaks through the surface tension of a polymer solution to form micro-nano fibers, and shoots to the collection platform under the action of an electric field. Based on its principle, the fibers in the electrospinning process inevitably retain a large amount of charge. The electrical property of the residual charge is usually the same as the positive and negative of the voltage applied to the nozzle, and the direction of the formed electric field is opposite to that of the applied electrostatic field. Movement towards the collection platform has a negative effect. The dissipation rate of residual charge is slower than that of spinning. As the spinning process progresses, the residual charge accumulates on the collect...

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Problems solved by technology

[0006] Based on the method of ionic wind neutralizing the residual charge, the generated air flow will affect the spinning process, and too many carriers in the air will cause the breakdown voltage of the air to decrease, which will interfere with the normal electrospinning process; The variable high-voltage source cannot fundamentally solve the problem of residual charge, and the application of an alternating electric field will affect the stability of the electrospinning process. This application provides an electrospinning device

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