A microgravity suspension centrifugal spinning method

Abstract

The invention relates to a micro-gravity suspension type centrifugal spinning method, and belongs to the technical field of spinning. The micro-gravity suspension type centrifugal spinning method comprises the following steps: arranging a fiber collecting device and a first temperature control board in front of a centrifugal spinning tank; arranging a main air flow generator and a second temperature control board at the rear of the centrifugal spinning tank; arranging a secondary air flow generator below the second temperature control board; arranging a negative pressure generator below the fiber collecting device so that a centrifugal spinning air flow channel which is in a parabolic path is formed between the centrifugal spinning tank and the fiber collecting device; running jet flow which is sprayed out from the centrifugal spinning tank in the centrifugal spinning air flow channel in a micro-gravity suspension station to the direction of the fiber collecting device; gradually solidifying the jet flow into continuous filaments under the thermal radiation effect of the first temperature control board and the second temperature control board; and finally uniformly and continuously spreading the continuous filaments on the fiber collecting device to form a continuous filament net. The micro-gravity suspension type centrifugal spinning method is high in spinning efficiency, simple in equipment, easy to operate and extensive in raw materials.

Description

technical field [0001] The invention relates to a microgravity suspension type centrifugal spinning method, which belongs to the technical field of textiles. Background technique [0002] The principle of centrifugal spinning is: use the centrifugal force generated by the high-speed rotating spinneret to throw the spinning solution or melt out of the nozzle and generate an initial jet, which is then stretched and solidified to form ultrafine fibers. [0003] The fiber forming process in centrifugal spinning can usually be divided into the following three stages: the generation of the initial jet source, the drafting and solidification of the jet, and the collection of fibers. Among them, the first stage determines whether the spinning can be carried out normally, which is the first premise of centrifugal spinning; the second stage determines the shape and performance of fibers, which is the most critical stage in centrifugal spinning; the third stage is mainly responsible fo...

AI Technical Summary

Problems solved by technology

However, due to the existence of static electricity, the centrifugal spinning technology based on electrostatic collection has disadvantages such as high energy consumption and low safety.

[0006] To sum up, the centrifugal spinning based on annular collection is a two-step centrifugal spinning method in which the fibers are first spun on the receiving columns annularly distributed around the centrifugal spinning tank, and then collected by airflow. The fibers obtained are discontinuous short fibers, and the efficiency is low; the fibers obtained by the centrifugal spinning method based on electrostatic collection are still discontinuous, and the whole process is accompanied by high-voltage static electricity, resulting in high energy consumption, low safety factor, and low efficiency

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