A continuous compensation electrospinning feeding device

Abstract

The invention discloses feeding equipment for continuous compensated electrostatic spinning. The feeding equipment comprises a sample stirring device, a solution buffering device, a solution storage device, a solvent storage device, a uniformly-mixing device, a spinning solution tank and a detecting device, wherein the sample stirring device is used for stirring a spinning sample to form a uniform fluid to obtain a spinning solution; the solution buffering device is used for defoaming the spinning solution; the solution storage device is used for storing the defoamed spinning solution; the solvent storage device is used for storing a solvent; the uniformly-mixing device is used for uniformly mixing the defoamed spinning solution and the solvent; the spinning solution tank is used for spinning; and the detecting device is used for monitoring the spinning solution tank. The feeding equipment is capable of continuously feeding and regulating the concentration of the solution in a compensated way, controllable in condition and reliable in operation, and easily assists a needle-free electrostatic spinning device in realizing industrialization.

Description

technical field [0001] The invention relates to a feeding device. More specifically, it relates to a continuity-compensated electrospinning feeding device. Background technique [0002] Electrospinning, also known as electrospinning, refers to the fact that under the action of a high-voltage electric field, the charged polymer solution or melt forms a cone, the so-called "Taylor cone", and continues to increase the electric field strength, the polymer solution Or the melt will be ejected from the "Taylor cone", and the jet will oscillate under the action of the high-voltage electric field, resulting in irregular spiral motion with high frequency, resulting in the rapid thinning of the jet and the rapid volatilization of the solvent. Nano-scale fibers are scattered on the collection device in a random manner to form a micro-nano fiber film, or on a moving / rotating collection device, a micro-nano fiber film with a certain fiber orientation is formed. The obtained micro-nano f...

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Problems solved by technology

[0004] Although existing cylinder-type electrospinning devices and needle-free electrospinning devices can spin micro-nano fibers, various problems have occurred because they cannot realize continuous feeding: (1) the problem of continuous spinning

The electrospinning device cannot continuously feed materials, resulting in the inability to continue spinning, and also making electrospinning difficult to industrialize

(2) The problem of the concentration change of the spinning solution

During the electrospinning process, the volatilization of the solvent increases the concentration of the spinning solution, resulting in the non-uniform diameter and aspect ratio of the prepared nanofibers, which affects the properties of the spinning product

(3) The reduction of the spinning liquid level will also lead to the change of the shape of the spinning product

In addition, the spinning solution is charged, which brings a series of difficulties to the development of continuous feeding devices

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