Liftable free liquid level spinning device for preparing oriented fibers on large scale

Abstract

The application relates to a liftable free liquid level spinning device for preparing oriented fibers on a large scale. The liftable free liquid level spinning device for preparing oriented fibers ona large scale comprises a liquid storage mechanism, a grid lifting mechanism, a high-voltage electrostatic generator, wherein the liquid storage mechanism is used for placing spinning solution; the grid lifting mechanism is at least partially arranged in the liquid storage mechanism and can move up and down along the liquid storage mechanism; the high-voltage electrostatic generator is electrically connected with the grid lifting mechanism and the liquid storage mechanism; and the grid lifting mechanism comprises a grid arranged in the liquid storage mechanism and a lifting component arrangedon one side of the liquid storage mechanism and used for driving the grid to move up and down, and the grid has a number of raised nodes. According to the liftable free liquid level spinning device for preparing oriented fibers on a large scale, the grid lifting mechanism is arranged and can move up and down along the liquid storage mechanism, so that the flowability of the spinning solution in the liquid storage mechanism can be driven, and the characteristics of reducing the viscosity of the spinning solution and improving the dispersibility of a polymer are achieved; and meanwhile, when thegrid lifting mechanism extends out of the spinning liquid level, the surface tension of the spinning liquid level can be broken, and then the spinning solution is stretched under the action of an electrostatic field to generate a large amount of fibers.

Description

technical field [0001] The invention relates to a liftable free liquid surface spinning device for preparing oriented fibers in large batches, and belongs to the technical field of free liquid surface spinning. Background technique [0002] Free surface electrospinning is a new type of spinning process. The principle of co-spinning is similar to that of bubble electrospinning. It uses the electrostatic force provided by the high-voltage electric field to overcome the surface tension of the polymer liquid surface and form a Taylor on the polymer liquid surface. cone, and further form a jet, which is thinned into nanofibers under the action of an electric field force. Because there is no bubble involved in this process, it overcomes the disadvantages of air bubble electrospinning, such as uncontrollable bubble size, irregular bubble rupture, and uneven fiber diameter distribution caused by it, while also retaining the advantages of high output of air bubble electrospinning. H...

AI Technical Summary

Problems solved by technology

However, in the free liquid surface spinning process, the surface tension only exists on the liquid storage device. Under the action of high-voltage static electricity, the surface tension is overcome, and the fibers produced are not enough.

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