Equipment and method for non-contact dissolution and deaeration of high-concentration and high-viscosity spinning solution

A non-contact, spinning solution technology, applied in spinning solution preparation, spinning solution filtration, filament forming treatment, etc., can solve the problem of easy pollution of the system, damage of raw materials, low degassing efficiency of the degassing process, etc. problems, to avoid oil pollution, reduce damage, and improve defoaming efficiency

Inactive Publication Date: 2016-12-14
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problems that the existing defoaming process has low degassing efficiency, is easy to cause damage to raw materials, and is easy to receive pollution in the system

Method used

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  • Equipment and method for non-contact dissolution and deaeration of high-concentration and high-viscosity spinning solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Cellulose and 1-ethyl-3-methylimidazole acetate / dimethyl sulfoxide composite solvent (1-ethyl-3-methylimidazole acetate: the mass ratio of dimethyl sulfoxide is 3 : 7) directly add in two material cups 5 of 316 stainless steel by mass ratio 25: 100, turn on the temperature control device 3, set the temperature at 110°C, start the gear transmission 1, set the revolution speed to 2000rpm, and the rotation speed to 1800rpm, make the material cup 5 revolve and rotate, and obtain the spinning solution after dissolving for 5 minutes; open the pressure control device 2, set the vacuum degree to -0.097MPa, set the temperature of the temperature control device 3 to 80°C, and adjust the material cup The revolution speed of 5 is 1500rpm, the rotation speed is 1300rpm, and a transparent and clear spinning solution is obtained after degassing for 5 minutes.

Embodiment 2

[0025] Add polyacrylonitrile and DMSO directly into two HDPE plastic material cups 5 at a mass ratio of 23:100, turn on the temperature control device 3, set the temperature to 80°C, start the gear transmission device 1, and set the revolution speed to 1850rpm , the rotation speed is 1600rpm, make the material cup 5 revolve and rotate, and obtain the spinning solution after dissolving for 10 minutes; open the pressure control device 2, set the vacuum degree to -0.095MPa, and set the temperature of the temperature control device 3 to 60°C, The revolution speed of the material cup 5 was adjusted to 1650 rpm, the rotation speed was 1400 rpm, and a transparent and clear spinning solution was obtained after degassing for 3 minutes.

Embodiment 3

[0027] Add aramid fiber and concentrated sulfuric acid directly into two 316 stainless steel material cups 5 at a mass ratio of 21:100, turn on the temperature control device 3, set the temperature to 90°C, start the gear transmission device 1, and set the revolution speed to 1000rpm , the rotation speed is 800rpm, so that the material cup 5 is revolutionized and rotated, and the spinning solution is obtained after dissolving for 15min; the pressure control device 2 is opened, the vacuum degree is set at -0.097MPa, the revolution speed of the adjustment material cup 5 is 1000rpm, and the rotation speed at 900rpm, a transparent and clear spinning solution was obtained after degassing for 8 minutes.

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Abstract

The invention discloses a piece of equipment and a method for non-contact dissolution and deaeration of a high-concentration and high-viscosity spinning solution. The equipment for the dissolution and deaeration comprises a gear assembly, wherein a material cup is disposed on the gear assembly; and the material cup is connected to a temperature control device and a pressure control device respectively. The method for the dissolution and deaeration comprises the steps that a polymer and a solvent are directly added into the material cup, the temperature control device is started, the gear assembly is started, revolution and rotation of the material cup are conducted, temperature and rotation speeds are adjusted, and the spinning solution is obtained after the dissolution of the polymer and the solvent; and the pressure control device is then started, the temperature and the rotation speeds are adjusted, and the transparent and clear spinning solution is obtained after the deaeration of the spinning solution. According to the invention, raw materials are dissolved firstly under a zero vacuum degree or a low vacuum degree to prepare the spinning solution; and then, the deaeration of the spinning solution is conducted under a high vacuum degree, and the dissolution and the deaeration of the spinning solution can be completed in the same equipment. In this way, integration of the efficient dissolution and the efficient deaeration of the spinning solution can be achieved; and efficiency of the dissolution and the deaeration can be increased.

Description

technical field [0001] The invention relates to a dynamic defoaming device and method for high-concentration and high-viscosity spinning liquid, in particular to a non-contact dissolving and defoaming device and method without a stirring device. Background technique [0002] Spinning solution degassing is an important process in fiber production. If the air bubbles contained in the spinning solution are not removed before spinning, the fiber is easily broken during the subsequent spinning process, and the draft ratio is difficult to increase. Seriously affect the appearance and performance of the fiber. For high-viscosity spinning solution, the requirements for defoaming equipment are relatively high, and it is difficult for general static defoaming equipment to remove the air bubbles, because the resistance in high-viscosity spinning solution is extremely high, and the buoyancy of the bubbles alone rises to the spinning position. The surface of the spinning solution is ext...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D1/02D01D1/10
CPCD01D1/02D01D1/103
Inventor 张玥王东兴余木火王乐军邓雅季皓郎玉玺刘怡宁
Owner DONGHUA UNIV
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