Preparation equipment and preparation process for electrostatic spinning

Abstract

The invention discloses preparation equipment for electrostatic spinning. The preparation equipment comprises a spinning machine box, a spinning receiving device and a spinning drying device, and further comprises an injector, a propelling device, an airflow auxiliary device and an auxiliary air source; the injector comprises a push rod, an injection cylinder and a spinning needle; the spinning needle points to a receiving plate; the propelling device is connected with the push rod and used for providing reciprocating driving force for the push rod; the airflow auxiliary device comprises a ventilation pipeline and an airflow cover; the ventilation pipeline is arranged between the injector and the receiving plate; the spinning needle penetrates through the ventilation pipeline; the airflow cover and the spinning needle are correspondingly arranged at the bottom of the ventilation pipeline; an air outlet, opposite to the ventilation pipeline, of the airflow cover is coaxial and flush with a liquid outlet of the spinning needle; and the auxiliary air source is used for providing compressed air. According to the invention, auxiliary airflow is introduced on the basis of traditional high pressure, so that pulling-out of a yarn body is accelerated in the electrostatic spinning process, and the diameter of the formed yarn body and the drying and yarn output amount of the yarn body are greatly improved.

Description

technical field [0001] The invention relates to the technical field of electrospinning production, in particular to a preparation equipment and a preparation process of electrospinning. Background technique [0002] Spinning machine is a machine that forms filaments from solutions or melts containing polymers. According to different spinning preparation methods, spinning machines can be subdivided into three types: wet spinning, melt spinning, and dry spinning. . [0003] In the prior art, traditional industrial spinning machine technology has not been able to obtain nano-scale fibers. In order to obtain finer fibers, electrospinning machines came into being. Under the action of a strong electric field, the polymer solution changes from spherical to conical, and extends into filaments at the tip of the cone. Nanometer diameter polymer filaments can be obtained by this method. However, the extreme brittleness of electrospun fibers limits the development of applications. T...

AI Technical Summary

Problems solved by technology

When the distance between the needle and the receiving plate is too small or too large, it is not easy to form filaments. If it is too small, the filaments will become thicker and accompanied by liquid beads due to insufficient time for drawing and solvent volatilization.

And when the spinning distance is too large, the board may not be able to receive the silk

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