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Cooling device and cooling method of solvent method cellulose fiber spinning

A cellulose fiber and cooling device technology, applied in fiber treatment, textile and papermaking, artificial filament physical therapy, etc., can solve the problems of complex device, uneven blowing, difficult operation, etc., and achieve simple structure, good cooling effect, Smooth spinning effect

Inactive Publication Date: 2007-03-07
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a cooling device and cooling method for solvent-based cellulose fiber spinning, so as to solve the defects in the prior art such as complicated devices, difficult operation and uneven blowing.

Method used

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  • Cooling device and cooling method of solvent method cellulose fiber spinning
  • Cooling device and cooling method of solvent method cellulose fiber spinning

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] See Fig. 1, a cooling device is installed below the spinneret 11 of the spinneret 11 of the solvent method cellulose fiber spinning equipment spinneret assembly 10, which is a fan 15, air temperature regulator 1, control valve 2, porous plate A3 , a blowing device composed of a plenum 4, a perforated plate B5, a wire mesh layer 6, a rectifying plate 7 and an air outlet 16. The width of the blowing port 16 is 200 mm, and the height is 130 mm. The upper edge of the blowing port 16 is in the same plane as the face of the spinneret 11 of the spinning device, that is, the vertical distance between the two is 0. The horizontal distance between the vertical surface of the blowing port 16 and the centerline of the spinneret assembly 10 is 200mm. The cellulose raw material with a degree of polymerization (DP) of 600 was dissolved in an NMMO aqueous solution with a cellulose content of 10%, and the resulting cellulose spinning solution had a refractive index of 1.4860, a temperat...

Embodiment 2

[0028] A cooling device identical to embodiment 1 is installed below the spinneret 11 faces of the spinneret assembly 10 of the solvent method cellulose fiber spinning equipment, but the width of the tuyere is 250mm, and the height is 100mm. The vertical distance between the 11 surfaces is 4 mm, and the horizontal distance between the blowing port surface and the center line of the spinneret 10 is 150 mm. Using cellulose with a degree of polymerization (DP) of 700 and NMMO aqueous solution as raw materials, a spinning solution with a cellulose content of 13% is prepared. The refractive index of the solution is 1.4870, the temperature is 99 ° C, the viscosity is 1200 Pa s, brown transparent. After being pressurized by the booster pump, it passes through the melt filter, enters the spinning metering pump 8, and enters the spinneret assembly 10 through the conduit 9, from the spinneret with a diameter of 0.075mm and a number of 6000 holes. 11 squirts. The cold air blows and coo...

Embodiment 3

[0030]A cooling device identical to that of Embodiment 1 is installed below the spinneret 11 face of the spinneret assembly 10 of the solvent-process cellulose fiber spinning equipment, but the width of the blowing port is 280 mm, and the height is 90 mm. The upper edge of the blowing port and the spinneret The vertical distance between the 11 surfaces is 2 mm, and the horizontal distance between the surface of the blowing port and the centerline of the spinneret assembly 10 is 180 mm. Use cellulose with a degree of polymerization (DP) of 700 and an aqueous NMMO solution as raw materials to prepare a spinning solution with a cellulose concentration of 9%, so that the solution has a refractive index of 1.4850, a temperature of 92°C, and a brown color with a viscosity of 1200 Pa·s. transparent body. After being pressurized by the booster pump, after passing through the melt filter, it enters the spinning metering pump 8, and enters the spinneret assembly 10 through the conduit 9...

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Abstract

This invention discloses one cooling device and method of solvent cellulose fiber spinning, which adopts side wind cooling device with speed as 2-12m / s and temperature as 10-35DEG C and relative temperature as 10%-80%. This invention device is of simple structure and easy control wind each parameter and good effect.

Description

technical field [0001] The invention relates to the field of chemical fiber production, in particular to a cooling device and method used in a spinning process, in particular to a cooling device and a cooling method used in a solvent-based cellulose fiber spinning process. Background technique [0002] The preparation of cellulose fibers by the solvent method is generally carried out by dry-wet spinning, that is, the thin stream of cellulose solution sprayed from the spinneret hole first passes through an air gap area during spinning, and the thin stream of solution gradually passes through the air environment around the air gap. Cool and then enter the coagulation bath to be solidified into filaments. Due to the high temperature of the spinning solution during the spinning process, the environmental conditions around the air gap will have a greater impact on the properties of the fibers formed after the solidification of the thin stream, so the distance of the air gap area ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D10/00
Inventor 胡学超邵惠丽章潭莉
Owner DONGHUA UNIV
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