Special heating device for electrostatic spinning of nanofibers

Abstract

The invention relates to a special heating device for electrostatic spinning of nanofibers. The device comprises a base and a heating cylinder, wherein the two ends of the heating cylinder are provided with openings, the surfaces of the side walls, close to the two ends of a gear belt, of the heating cylinder are provided with limiting grooves in the axial direction respectively, and the two endsof the heating cylinder are rotatably provided with rotating bases; one end of each rotating base is provided with an opening, wherein the edge of one end of each opening is provided with a convex strip; the convex strips are embedded into the limiting grooves to limit the rotating bases; the surface of the other end of each rotating base is provided with a through hole, and a plurality of arc-shaped sliding grooves are formed around each through hole and uniformly distributed around the through hole spirally; a sliding shaft is vertically arranged in each arc-shaped sliding groove, one end ofeach sliding shaft is provided with a limiting block, and the other end of each sliding shaft is provided with a rotating blade; the edges of every two adjacent rotating blades fit each other, and the sliding shafts move on the sliding grooves to realize unfolding and folding of the rotating blades. The size of the opening of each rotating base can be effectively reduced to prevent heat in the heating cylinder from dispersing.

Description

technical field [0001] The invention belongs to the technical field of nanofiber preparation, and in particular relates to a special heating device for electrospinning nanofibers. Background technique [0002] Nanofiber refers to a linear material with a diameter of nanoscale and a large length with a certain aspect ratio. There are many methods for manufacturing nanofibers, and electrospinning is currently one of the methods that can quickly prepare nanofibers. The method can be applied to the synthesis of natural polymers, nanoparticles or polymers of active agents, and can also be applied to the preparation of metal and ceramic nanofibers. The electrospinning process is to apply a high-voltage electrostatic field between the nozzle and the receiving device. Under the action of the electric field, the charged polymer droplets overcome the surface tension and viscous resistance, form a jet, the diameter becomes smaller, fly to the receiving plate, and finally form The proc...

AI Technical Summary

Problems solved by technology

The electrospinning process is to apply a high-voltage electrostatic field between the nozzle and the receiving device. Under the action of the electric field, the charged polymer droplets overcome the surface tension and viscous resistance, form a jet, the diameter becomes smaller, and fly to the receiving plate, and finally form The process of superfine fiber, and the polymer in the extruded tube needs to be heated before spraying to melt it into a uniform melt. The heating effect of the material is not uniform, which greatly affects the efficiency of electrospinning, and the existing heating device is easy to lose heat when heating, causing the nearby temperature to rise and wasting a lot of electric energy

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