Liquid-spraying spinning device

Abstract

The invention relates to a liquid-spraying spinning device. The device comprises an airtight box with an air inlet and an air outlet; an air inlet device, a de-humidification device, an air pipe, a solution storage device, a nozzle, a receiving screen, a first funnel, and a first evacuating device are arranged in the airtight box; the solution storage device comprises a stirring device and a firstheating device; the receiving screen has a hollow structure. The liquid-spraying spinning device has the advantages that the liquid-spraying spinning is implemented in the airtight box, so that an operator does not need to get in contact with toxic organic solution volatile gas, and harm to the body of the operator can be avoided; the whole airtight box is airtight, so that the internal of the airtight box is maintained at a constant temperature and a humidity state, and the formed spin is uniform in character; before the spinning solution is sprayed from the nozzle, the spinning solution isheated and stirred, so that the spinning solution is uniform in character and good in fluidity, the phenomenon that the spin is different in thick-thin due to non-uniform and the spinning solution blocks the nozzle can be avoided, the receiving network is in low-temperature receiving, thereby facilitating the observation on a spinning microstructure.

Description

technical field [0001] The invention relates to the technical field of spinning, in particular to a liquid-jet spinning device. Background technique [0002] Nanofibers generally refer to ultrafine fibers with a diameter of nanometer scale. Due to their small diameter and large specific surface area, nanofibers are a high-performance fiber product. [0003] Methods for preparing nanofibers include electrospinning, meltblowing, and solution jet spinning. Among them, the output of electrospinning is low and the cost of equipment is high, so it is difficult to realize industrialization; while the meltblown method is limited to the processing of a few polymers such as polypropylene and polylactic acid. Due to pyrolysis, non-thermoplasticity and other reasons, the melt blown method cannot process these polymers. [0004] Solution jet spinning uses high-speed airflow to stretch the spinning solution and volatilize the solvent to prepare nanofibers. The method has the advantages...

AI Technical Summary

Problems solved by technology

[0005] However, the existing solution jet spinning device has some disadvantages, which directly affect the safety, effectiveness and wide use of the equipment. The specific disadvantages are as follows:

[0006] (1) Application of polymer materials: the existing solution jet spinning solution is a static solution before being extruded from the nozzle, that is, after the solute (polymer) is dissolved in the solvent, it undergoes a certain mixing method (such as heating or stirring) Form a solution, inject it into the spinning die, and then spray it out from the nozzle in a static manner. This method is only suitable for spinning conventional polymer materials. For some polymer materials with high viscosity and poor fluidity, static solution When the method is extruded, the extrusion pressure is relatively high, and it is difficult to form spun fibers with a smaller diameter;

[0007] (2) Safety issues: the existing spinning environment is an open environment, and the solvent of the spinning solution is usually an organic solvent, and the solvent of the spinning solution diffuses during the volatilization process, which has an impact on the health of the operator;

[0008] (3) Environmental problems: Since the operating environment of the existing solution jet spinning device is an open environment, the temperature and humidity in the environment are uncontrollable, causing the moisture in the environment to have an impact on the solvent volatilization of the spinning solution, resulting in The spinning performance of the fiber is inconsistent, such as the relative humidity in the environment is high, which reduces the volatilization rate of the solvent in the polymer solution, directly affects the level of the fiber solidification point, and affects the diameter, appearance and intrinsic quality of the final spinning

[0009] Therefore, there is an urgent need for a solution jet spinning equipment that can solve the poor fluidity and inhomogeneous properties of the spinning solution, thereby producing spinning with uniform and stable properties.

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