Device and method for flash evaporation textile of superfine fibre

A technology of ultra-fine fiber and equipment, which is applied in the field of fiber manufacturing, can solve the problems that it is difficult to control the pressure and temperature of the polymer solution, the residence time of the polymer solution, and the process flow, etc., so as to achieve more raw materials for spinning , simple structure and easy process control

Active Publication Date: 2008-05-07
GUANGDONG KINGFA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this equipment and method are not easy to control the pressure and temperature of the polymer solution in the autoclave, and it is not easy to control the residence time of the polymer solution in the autoclave, so it is not easy to control the process flow and affect the quality of the ultrafine fiber

Method used

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  • Device and method for flash evaporation textile of superfine fibre
  • Device and method for flash evaporation textile of superfine fibre

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Using the equipment and method described in the present invention, polyethylene microfibers are spun.

[0022] First put the polyethylene monomer and solvent 1, 2-dichloroethane into the autoclave 1, stir for 20 minutes at a temperature of 200°C and a pressure of 15 MPa to fully dissolve the polyethylene; then open the autoclave 1 and the low pressure autoclave 2 The high-pressure control valve 5 between them makes the solution flow into the low-pressure kettle 2. The temperature of the low-pressure kettle 2 is 180°C and the pressure is 5MPa. The filament head 3 and the filament separation baffle 4 are ejected rapidly and uniformly dispersed to obtain a three-dimensional network polyethylene superfine fiber plexifilament.

Embodiment 2

[0024] Using the equipment and method described in the present invention, polyester superfine fibers are spun.

[0025]First put the polyester monomer and solvent chloroform into the autoclave 1, stir for 30 minutes at a temperature of 350°C and a pressure of 20 MPa to fully dissolve the polyester; then open the high-pressure control valve between the autoclave 1 and the low-pressure autoclave 2 5. Let the solution flow into the autoclave 2. The temperature of the autoclave 2 is 320°C and the pressure is 10 MPa. After staying for 10 minutes, after it is completely dissolved, open the low-pressure control valve 6 to allow the solution to pass through the spinneret 3 and the baffle plate 4 Rapidly spray and evenly disperse to obtain three-dimensional net-like polyester superfine fiber plexifilament.

Embodiment 3

[0027] The polyvinylidene fluoride superfine fiber is spun by using the equipment and method described in the invention.

[0028] First put vinylidene fluoride monomer and solvent cyclohexane into autoclave 1, and stir for 20 minutes at a temperature of 220°C and a pressure of 15 MPa to fully dissolve the vinylidene fluoride; then open the space between autoclave 1 and low-pressure autoclave 2 The high-pressure control valve 5 of the high-pressure kettle makes the solution flow into the low-pressure kettle 2. The temperature of the low-pressure kettle 2 is 200°C and the pressure is 6MPa. The filament baffle 4 is ejected rapidly and uniformly dispersed to obtain a three-dimensional net-like vinylidene fluoride superfine fiber plexus filament.

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Abstract

The invention relates to a piece of equipment and a method for flash-spinning superfine fiber, which is characterized in that: the equipment comprises a high pressure boiler with a high pressure heating mantle, and a low pressure boiler with a low pressure heating mantle; wherein, a high pressure control valve is arranged between the high pressure boiler and the low pressure boiler which are communicated; an agitator is arranged in the high pressure boiler; the output pipe of the low pressure boiler is connected with a spinneret via a low pressure control valve, and a fiber splitting baffle is positioned at the outlet of the spinneret; the high pressure heating mantle, the low pressure heating mantle, the high pressure control valve, the low pressure control valve and the agitator are connected with a control device respectively; the method is applied to the equipment and the following process: polymer and solvent are put into the high pressure boiler for full dissolution; then the high pressure control valve is opened, and the solution flows into the low pressure boiler; after 15 to 30 minutes, the low pressure control valve is opened, the solution ejects from the spinneret and the fiber splitting baffle, and three dimension network shaped superfine fiber is obtained. The temperature and the pressure in both the high pressure boiler and low pressure boiler is 150 to 350 DEG C and 5 to 25MPa respectively; the polymer can be a polyolefin, a polyester or a polyvinylidene fluoride, and the solvent can be a 1, 2-dichloroethane, a chloroform or a cyclohexane corresponding to the polymer.

Description

technical field [0001] The invention relates to a fiber manufacturing technology, specifically a device and method for spinning superfine fibers by a flash method, and the international patent main classification number is proposed to be Int.Cl.D06M 13 / 00 (2006.01). technical background [0002] Superfine fiber refers to the fiber with extremely small single filament fineness. There is no standard definition for superfine fiber in various countries in the world, but it usually refers to fibers with a single filament fineness less than 0.3dtex. Microfiber is a high-quality, high-tech and high-value-added new textile raw material. The textiles made of it have light and thin texture, soft and comfortable feel, good drapability, large specific surface area, strong adsorption, and warmth retention. It is widely used in clothing, home furnishing, leather and decorative materials, etc. The development of new ultrafine fibers and their new technologies has become a hot spot in rese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/11D01D4/02
Inventor 程博闻夏磊西鹏康卫民任元林刘亚
Owner GUANGDONG KINGFA TECH CO LTD
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