CN113529212A - Method and device for quickly separating solvent from ultrahigh molecular weight polyethylene fiber - Google Patents

Method and device for quickly separating solvent from ultrahigh molecular weight polyethylene fiber Download PDF

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CN113529212A
CN113529212A CN202110720706.5A CN202110720706A CN113529212A CN 113529212 A CN113529212 A CN 113529212A CN 202110720706 A CN202110720706 A CN 202110720706A CN 113529212 A CN113529212 A CN 113529212A
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solvent
fiber
molecular weight
weight polyethylene
spinning
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CN113529212B (en
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王新威
孙勇飞
李济祥
郑晗
张玉梅
许海霞
李建龙
吴向阳
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Shanghai Research Institute of Chemical Industry SRICI
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F11/00—Chemical after-treatment of artificial filaments or the like during manufacture
    • D01F11/04—Chemical after-treatment of artificial filaments or the like during manufacture of synthetic polymers
    • D01F11/06—Chemical after-treatment of artificial filaments or the like during manufacture of synthetic polymers of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D1/00—Treatment of filament-forming or like material
    • D01D1/02—Preparation of spinning solutions
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/12—Stretch-spinning methods
    • D01D5/16—Stretch-spinning methods using rollers, or like mechanical devices, e.g. snubbing pins
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
    • Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Artificial Filaments (AREA)

Abstract

The invention relates to a method and a device for quickly separating a solvent from ultrahigh molecular weight polyethylene fibers, wherein the separation method comprises the following steps: removing part of solvent on the surface of the nascent fiber by using a hot air knife, and extracting and separating the residual solvent in the nascent fiber by adopting a spraying extraction agent mode; the device comprises a shell, and a traction roller mechanism, a hot air knife and a spray head which are respectively arranged in the shell, wherein the hot air knife and the spray head are respectively matched with the traction roller mechanism. Compared with the prior art, the method has the advantages that the hot air knife is adopted to remove the solvent part on the surface of the fiber, and then the residual solvent in the fiber is extracted and separated in a spraying mode, so that the extractant is utilized to the maximum extent, the solvent in the jelly fiber can be effectively and quickly separated, and the performance of the finished fiber is effectively ensured.

Description

Method and device for quickly separating solvent from ultrahigh molecular weight polyethylene fiber
Technical Field
The invention belongs to the technical field of processing of ultra-high molecular weight polyethylene fibers, and relates to a method and a device for quickly separating a solvent from ultra-high molecular weight polyethylene fibers.
Background
The ultra-high molecular weight polyethylene (UHMWPE) fiber is a world third-generation special fiber which appears after carbon fiber and aramid fiber, is a fiber with the highest specific strength and bulletproof performance in the current industrialized fiber material, and has the strength which is 15 times of that of a high-quality steel wire under the condition of the same weight. The UHMWPE fiber also has the characteristics of excellent chemical resistance and weather resistance, high energy absorption, low conductivity, X-ray permeability, certain waterproofness and the like. The excellent performance makes it have wide application prospect in the fields of military affairs, space flight and navigation engineering, high-performance and light composite materials, sports equipment and the like.
The preparation of UHMWPE fiber adopts a jelly spinning process, solvent oil such as decalin, white oil, kerosene and the like is generally adopted as a solvent, the solvent oil and UHMWPE resin are mixed according to a certain proportion to prepare nascent fiber, the solvent contained in the nascent fiber needs to be extracted by an extracting agent, and then the solvent-free fiber is obtained by drying. In the existing extraction process, hydrocarbon cleaning agent, methylene dichloride, carbon tetrachloride and the like are usually adopted as extracting agents for extraction, and the extraction form mainly adopts an upper V-shaped winding roller and a lower V-shaped winding roller.
Chinese patent CN101012577A discloses an extraction and drying method in the preparation process of ultra-high molecular weight polyethylene fiber, which adopts dichloromethane as an extracting agent to extract gel fiber, the extraction process adopts counter-current extraction operation, and the fiber filaments are arranged in an extraction tank in a V-shape from top to bottom. However, the extraction tank is formed such that the width of the fiber arrangement is limited, and if the fiber filaments need to be cleaned around the roll in the extraction tank, the operation is inconvenient and dangerous. In addition, since the spinning solvent is attached to the surface of the fiber filament in a relatively large amount, a large amount of the extractant is consumed in the extraction process.
Chinese patent CN202620773U discloses a fiber extraction device and a fiber multistage extraction device, which adopt a form of double rollers to wind fiber filaments on the two double rollers, so as to effectively reduce the number of extraction rollers and the volume of an extraction chamber, but the method is suitable for monofilaments, is not suitable for a large number of rows of fibers, and is easy to cause the knotting and winding of fiber filaments when winding in the double rollers, and is not easy to operate and process.
Disclosure of Invention
The invention aims to provide a method and a device for quickly separating a solvent in ultra-high molecular weight polyethylene fibers, which can quickly and effectively separate the solvent in jelly glue fibers so as to ensure the performance of finished fibers.
The purpose of the invention can be realized by the following technical scheme:
a method for quickly separating a solvent from ultrahigh molecular weight polyethylene fibers comprises the following steps: firstly, a hot air knife is utilized to remove partial solvent (30-60 percent of solvent) on the surface of the nascent fiber, and then the residual solvent in the nascent fiber is extracted and separated by adopting a spray extraction agent mode. After the solvent was separated, dry fiber was obtained.
Furthermore, the air temperature of the hot air knife is 35-120 ℃, preferably 50-80 ℃, and the air speed is 0.5-5m/s, preferably 1-3 m/s.
Further, the extraction agent comprises one or more of hydrocarbon cleaning agent, dichloromethane, xylene, ethylene dichloride or carbon tetrachloride.
Further, the preparation method of the nascent fiber comprises the following steps: mixing the ultra-high molecular weight polyethylene resin with a spinning solvent to obtain a spinning solution, and then sequentially carrying out swelling treatment, extrusion, spinning and cooling to obtain the solvent-containing nascent fiber. The extrusion process is carried out in a twin-screw extruder, the spinning process is carried out in a spinning box, and the cooling process is carried out in a cooling tank.
Further, the viscosity average molecular weight of the ultra-high molecular weight polyethylene resin is 100 ten thousand800 ten thousand and the bulk density is 0.2 to 0.6g/cm3The average particle size is 100-300 mu m, and the particle size distribution width is (d90-d10)/d50 is 0.7-1.8; the spinning solvent comprises one or more of decahydronaphthalene, white oil, vegetable oil, mineral oil or tetrahydronaphthalene.
Further, the mixing process is as follows: heating the spinning solvent to 60-120 ℃, and then adding the ultra-high molecular weight polyethylene resin into the spinning solvent and stirring; the swelling treatment process comprises the following steps: placing the spinning solution in a swelling kettle, heating to 135 ℃ at a heating rate of 0.8-1.2 ℃/min, and keeping the temperature for 0.5-2 hours; after swelling treatment, the mass percent of solute in the spinning solution is 1-20%.
Furthermore, the mass ratio of the spinning solvent to the extracting agent is 1 (1-20).
A quick separation device for a solvent in ultrahigh molecular weight polyethylene fibers for implementing the method comprises a shell, and a traction roller mechanism, a hot air knife and a spray head which are respectively arranged in the shell, wherein the hot air knife and the spray head are respectively matched with the traction roller mechanism. The drawing roller mechanism is used for drawing fibers, the hot air knife is used for blowing hot air to the surface of the nascent fibers, and the spray header is used for spraying the extracting agent into the nascent fibers.
Preferably, the material of the shell is 316L or duplex stainless steel 2205, the width of the shell is 0.1-100m, and the length is 0.1-100 m. The devices can be used in series in one or more groups.
Furthermore, the side of shell on be equipped with fibre entry, fibre export respectively, carry over pinch rolls mechanism draw the hot-rolling and a plurality of from bottom to top alternately set up about in proper order with fibre entry looks adaptation draw the chill roll, fibre export and the highest cold-rolling looks adaptation of drawing in position, hot-blast sword be located and draw the hot-rolling department, the shower head be equipped with a plurality ofly altogether to lay at the top of shell. In the traction process of the traction roller mechanism, the nascent fiber firstly passes through the hot air knife, part of solvent on the surface of the nascent fiber is removed by the hot air knife, then the nascent fiber continuously moves to a fiber outlet under the traction action of a plurality of traction cold rollers and is continuously contacted with the extractant sprayed from the upper part, so that the residual solvent in the nascent fiber is extracted and separated. The angle between the hot air knife and the horizontal fiber inlet direction is 0 to 90 degrees, preferably 35 to 55 degrees.
Preferably, the temperature of the traction cold roll is 10-35 ℃, and further preferably 15-25 ℃; the temperature of the drawing hot roll is 35 to 120 ℃, and more preferably 50 to 80 ℃. The advancing speed of the fiber under the traction of the traction roller mechanism is 0.5-60 m/min.
Further, the shell in still be equipped with water conservancy diversion slope and backwash tank, water conservancy diversion slope be located the bottom of shell, and the top surface of water conservancy diversion slope be the inclined plane, the bottom looks adaptation on backwash tank and inclined plane. The guide slope is used for converging the separated solvent and the extractant into the reflux tank.
Preferably, the top surface of the flow guiding slope is inclined at an angle of 5-45 degrees, preferably 10-20 degrees.
Compared with the prior art, the invention has the following characteristics:
1) according to the invention, the hot air knife is adopted to remove the solvent part on the surface of the fiber, and then the residual solvent in the fiber is extracted and separated in a spraying manner, so that the extractant is utilized to the maximum extent, the solvent in the gel fiber can be effectively and rapidly separated, and the performance of the finished fiber is effectively ensured.
2) Compared with the existing nascent fiber extraction device, the device has the characteristics of small dosage of the extracting agent, high extraction efficiency, large breadth, convenience in operation and the like, and after separation by the device, the solvent residual rate in the fiber is low, the mechanical strength of the fiber is high, and the device is very suitable for preparing high-end ultrahigh molecular weight polyethylene fiber.
Drawings
FIG. 1 is a schematic view of the apparatus of the present invention;
the notation in the figure is:
the device comprises a shell 1, a traction cold roller 2, a hot air knife 3, a traction hot roller 4, a flow guide slope 5, a reflux groove 6, a spray header 7, a fiber inlet 8 and a fiber outlet 9.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
The invention provides a method for quickly separating a solvent from ultrahigh molecular weight polyethylene fibers, which comprises the following steps: firstly, a hot air knife 3 is utilized to remove partial solvent on the surface of the nascent fiber, and then a spray extraction agent mode is adopted to extract and separate the residual solvent in the nascent fiber.
Wherein the air temperature of the hot air knife 3 is 35-120 ℃, and the air speed is 0.5-5 m/s.
The extractant includes one or more of hydrocarbon cleaner, dichloromethane, xylene, ethylene dichloride, or carbon tetrachloride.
The preparation method of the nascent fiber comprises the following steps: mixing the ultra-high molecular weight polyethylene resin with a spinning solvent to obtain a spinning solution, and then sequentially carrying out swelling treatment, extrusion, spinning and cooling to obtain the solvent-containing nascent fiber. The viscosity average molecular weight of the ultra-high molecular weight polyethylene resin is 100-800 ten thousand, and the bulk density is 0.2-0.6g/cm3The average particle size is 100-300 mu m, and the particle size distribution width is (d90-d10)/d50 is 0.7-1.8; the spinning solvent comprises one or more of decalin, white oil, vegetable oil, mineral oil, or tetralin. The mixing process is as follows: heating the spinning solvent to 60-120 ℃, and then adding the ultra-high molecular weight polyethylene resin into the spinning solvent and stirring; the swelling treatment process comprises the following steps: placing the spinning solution in a swelling kettle, heating to 135 ℃ at a heating rate of 0.8-1.2 ℃/min, and keeping the temperature for 0.5-2 hours; after swelling treatment, the mass percent of solute in the spinning solution is 1-20%. The mass ratio of the spinning solvent to the extracting agent is 1 (1-20).
The invention also provides a device for quickly separating the solvent in the ultra-high molecular weight polyethylene fiber for implementing the method, as shown in figure 1, the device comprises a shell 1, and a traction roller mechanism, a hot air knife 3 and a spray header 7 which are respectively arranged in the shell 1, wherein the hot air knife 3 and the spray header 7 are respectively matched with the traction roller mechanism.
Wherein, be equipped with fibre entry 8, fibre export 9 on the side of shell 1 respectively, the carry over pinch rolls mechanism includes the cold roll 4 of drawing with the adaptation of fibre entry 8 and a plurality of from bottom to top in proper order left and right sides alternately set up draws the cold roll 2, fibre export 9 and the highest cold roll 2 looks adaptation of drawing of position, hot-blast sword 3 is located and draws hot roll 4 department, shower head 7 is equipped with a plurality ofly altogether to lay at the top of shell 1.
Still be equipped with water conservancy diversion slope 5 and backwash tank 6 in the shell 1, water conservancy diversion slope 5 is located the bottom of shell 1 to the top surface of water conservancy diversion slope 5 is the inclined plane, backwash tank 6 and the bottom looks adaptation on inclined plane.
Example 1:
600 ten thousand molecular weight ultrahigh molecular weight polyethylene resin is selected, and the bulk density is 0.41g/cm3Average particle size 180 μm, particle size distribution width (d90-d10)/d 50: 0.8, taking white oil as a solvent, mixing to prepare a spinning solution with the mass percent of 8 wt%, heating the spinning solvent to 60 ℃, adding the ultra-high molecular weight polyethylene resin into the spinning solvent, stirring, heating to 120 ℃ at the heating rate of 0.8 ℃/min, preserving heat for 2h, and then feeding into a double-screw extruder. The gel fiber obtained after spinning and cooling enters the device in figure 1, the width is 2m, the length is 10m, the material is 316L, the extracting agent is dichloromethane, and the mass ratio of the spinning solvent to the extracting agent is 1: 10. The temperature of the traction cold roller 2 is 20 ℃, and the temperature of the traction hot roller 4 is 60 ℃. The air temperature of the hot air knife 3 is 60 ℃, the air speed is 2m/s, and the angle between the hot air knife 3 and the horizontal inlet direction of the fiber is 45 degrees. The advancing speed of the fiber under the traction of the traction roller mechanism is 5 m/min. The angle of the diversion slope 5 is 15 degrees, the residual solvent amount in the extracted cellosilk is 120ppm, and the mechanical strength of the fiber is 38.2 cN/dtex.
Example 2:
400 ten thousand of ultrahigh molecular weight polyethylene resin with the bulk density of 0.41g/cm is selected3Average particle size 180 μm, particle size distribution width (d90-d10)/d 50: 1.2, mixing decahydronaphthalene serving as a solvent to prepare a spinning solution with the mass percent of 8 wt%, heating the spinning solvent to 80 ℃, adding the ultra-high molecular weight polyethylene resin into the spinning solvent, stirring, heating to 110 ℃ at the heating rate of 0.9 ℃/min, preserving heat for 1.5h, and then carrying out heat treatment on the mixtureFeeding into a double-screw extruder. The gel fiber obtained after spinning and cooling enters the device in figure 1, the width is 2m, the length is 10m, the material is 316L, the extracting agent is dichloromethane, the mass ratio of the spinning solvent to the extracting agent is 1:15, the temperature of the traction cold roll 2 is 20 ℃, and the temperature of the traction hot roll 4 is 60 ℃. The air temperature of the hot air knife 3 is 60 ℃, the air speed is 2m/s, and the angle between the hot air knife 3 and the horizontal inlet direction of the fiber is 45 degrees. The advancing speed of the fiber under the traction of the traction roller mechanism is 1 m/min. The angle of the diversion slope 5 is 15 degrees, the residual solvent amount in the extracted cellosilk is 100ppm, and the mechanical strength of the fiber is 39.5 cN/dtex.
Example 3:
600 ten thousand molecular weight ultrahigh molecular weight polyethylene resin is selected, and the bulk density is 0.35g/cm3Average particle diameter of 220 μm, particle size distribution width (d90-d10)/d 50: 1.0, white oil is used as a solvent, a spinning solution with the mass percent of 6 wt% is prepared by mixing, the spinning solvent is heated to 60 ℃, then the ultra-high molecular weight polyethylene resin is added into the spinning solvent and stirred, then the temperature is raised to 135 ℃ at the temperature rise rate of 1.2 ℃/min, the temperature is kept for 2 hours, and then the mixture enters a double-screw extruder. The gel fiber obtained after spinning and cooling enters the device in figure 1, the width is 10m, the length is 15m, the material is duplex stainless steel, the extracting agent is dimethylbenzene, the mass ratio of the spinning solvent to the extracting agent is 1:1, the temperature of a traction cold roller 2 is 15 ℃, and the temperature of a traction hot roller 4 is 80 ℃. The air temperature of the hot air knife 3 is 80 ℃, the air speed is 1m/s, and the angle between the hot air knife 3 and the horizontal inlet direction of the fiber is 30 degrees. The advancing speed of the fiber under the traction of the traction roller mechanism is 60 m/min. The angle of the diversion slope 5 is 10 degrees, the residual solvent amount in the extracted cellosilk is 200ppm, and the mechanical strength of the fiber is 36.2 cN/dtex.
Example 4:
400 ten thousand of ultrahigh molecular weight polyethylene resin with the bulk density of 0.35g/cm is selected3Average particle diameter of 260 μm, particle size distribution width (d90-d10)/d 50: 1.0, kerosene is used as a solvent, spinning solution with the mass percent of 10 wt% is prepared by mixing, the spinning solvent is heated to 120 ℃, then the ultra-high molecular weight polyethylene resin is added into the spinning solvent and stirred, and then the temperature is raised to 135 ℃ at the temperature rise rate of 0.8 ℃/minAnd preserving the heat for 0.5h, and then feeding into a double-screw extruder. The gel fiber obtained after spinning and cooling enters the device in figure 1, the width is 20m, the length is 20m, the material is duplex stainless steel, the extracting agent is carbon tetrachloride, the mass ratio of the spinning solvent to the extracting agent is 1:8, the temperature of the traction cold roll 2 is 15 ℃, and the temperature of the traction hot roll 4 is 80 ℃. The air temperature of the hot air knife 3 is 80 ℃, the air speed is 1m/s, and the angle between the hot air knife 3 and the horizontal inlet direction of the fiber is 30 degrees. The advancing speed of the fiber under the traction of the traction roller mechanism is 0.5 m/min. The angle of the diversion slope 5 is 10 degrees, the residual solvent amount in the extracted cellosilk is 80ppm, and the mechanical strength of the fiber is 41.2 cN/dtex.
Example 5:
400 ten thousand of ultrahigh molecular weight polyethylene resin with the bulk density of 0.35g/cm is selected3Average particle size 300 μm, particle size distribution width (d90-d10)/d 50: 1.0, mixing kerosene as a solvent to prepare a spinning solution with the mass percent of 15 wt%, heating the spinning solvent to 80 ℃, adding the ultra-high molecular weight polyethylene resin into the spinning solvent, stirring, heating to 115 ℃ at the heating rate of 1.0 ℃/min, preserving heat for 2 hours, and then feeding into a double-screw extruder. The gel fiber obtained after spinning and cooling enters the device in figure 1, the width is 40m, the length is 80m, the material is duplex stainless steel, the extracting agent is dichloromethane, the mass ratio of the spinning solvent to the extracting agent is 1:15, the temperature of a traction cold roller 2 is 15 ℃, and the temperature of a traction hot roller 4 is 80 ℃. The air temperature of the hot air knife 3 is 80 ℃, the air speed is 4m/s, and the angle between the hot air knife 3 and the horizontal inlet direction of the fiber is 90 degrees. The advancing speed of the fiber under the traction of the traction roller mechanism is 20 m/min. The angle of the diversion slope 5 is 10 degrees, the residual solvent amount in the extracted cellosilk is 80ppm, and the mechanical strength of the fiber is 40.1 cN/dtex.
Example 6:
700 ten thousand molecular weight ultrahigh molecular weight polyethylene resin with the bulk density of 0.45g/cm is selected3Average particle diameter of 150 μm, particle size distribution width (d90-d10)/d 50: 1.0, mixing kerosene as a solvent to prepare a spinning solution with the mass percent of 8 wt%, heating the spinning solvent to 80 ℃, adding the ultra-high molecular weight polyethylene resin into the spinning solvent, stirring, and then adding the ultra-high molecular weight polyethylene resin into the spinning solventHeating to 108 ℃ at the heating rate of 1.0 ℃/min, preserving the heat for 1h, and then feeding into a double-screw extruder. The gel fiber obtained after spinning and cooling enters the device in figure 1, the width is 600m, the length is 90m, the material is duplex stainless steel, the extracting agent is dichloroethylene, the mass ratio of the spinning solvent to the extracting agent is 1:5, the temperature of a traction cold roller 2 is 10 ℃, and the temperature of a traction hot roller 4 is 100 ℃. The air temperature of the hot air knife 3 is 100 ℃, the air speed is 3m/s, and the angle between the hot air knife 3 and the horizontal inlet direction of the fiber is 90 degrees. The advancing speed of the fiber under the traction of the traction roller mechanism is 10 m/min. The angle of the diversion slope 5 is 10 degrees, the residual solvent amount in the extracted cellosilk is 50ppm, and the mechanical strength of the fiber is 42.8 cN/dtex.
Comparative example 1:
under the spinning process conditions of example 6, the traditional extraction process is adopted, the extraction is directly carried out by using an extracting agent, the extracting agent is dichloromethane, the mass ratio of the spinning solvent to the extracting agent is 1:30, the advancing speed of the fiber under the traction of a traction roller is 10m/min, the residual solvent content in the extracted fiber is 360ppm, and the mechanical strength of the fiber is 34.2 cN/dtex.
Comparative example 2:
under the spinning process conditions of example 6, the traditional extraction process is adopted, the extraction is directly carried out by using an extracting agent, the extracting agent is carbon tetrachloride, the mass ratio of the spinning solvent to the extracting agent is 1:50, the advancing speed of the fiber under the traction of a traction roller is 5m/min, the residual solvent content in the extracted fiber is 280ppm, and the mechanical strength of the fiber is 35.1 cN/dtex.
Comparative example 3:
under the spinning process conditions of example 6, the traditional extraction process is adopted, the extraction is directly carried out by using an extracting agent, the extracting agent is dimethylbenzene, the mass ratio of the spinning solvent to the extracting agent is 1:80, the advancing speed of the fiber under the traction of a traction roller is 1m/min, the residual solvent content in the extracted fiber is 220ppm, and the mechanical strength of the fiber is 35.8 cN/dtex.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.

Claims (10)

1. A method for quickly separating a solvent from ultrahigh molecular weight polyethylene fibers is characterized by comprising the following steps: firstly, a hot air knife (3) is utilized to remove partial solvent on the surface of the nascent fiber, and then a spray extraction agent mode is adopted to extract and separate the residual solvent in the nascent fiber.
2. The method for rapidly separating the solvent from the ultra-high molecular weight polyethylene fiber according to claim 1, wherein the air temperature of the hot air knife (3) is 35-120 ℃ and the air speed is 0.5-5 m/s.
3. The method of claim 1, wherein the extractant comprises one or more of hydrocarbon detergent, dichloromethane, xylene, ethylene dichloride, or carbon tetrachloride.
4. The method for rapidly separating the solvent from the ultra-high molecular weight polyethylene fiber according to claim 1, wherein the preparation method of the nascent fiber comprises the following steps: mixing the ultra-high molecular weight polyethylene resin with a spinning solvent to obtain a spinning solution, and then sequentially carrying out swelling treatment, extrusion, spinning and cooling to obtain the solvent-containing nascent fiber.
5. The method of claim 4, wherein the viscosity average molecular weight of the UHMWPE resin is 100 to 800 ten thousand, and the bulk density is 0.2 to 0.6g/cm3The average particle size is 100-300 mu m, and the particle size distribution width is (d90-d10)/d50 is 0.7-1.8; the spinning solvent comprises decalin,One or more of white oil, vegetable oil, mineral oil, or tetralin.
6. The method for rapidly separating the solvent from the ultra-high molecular weight polyethylene fiber as claimed in claim 4, wherein the mixing process comprises: heating the spinning solvent to 60-120 ℃, and then adding the ultra-high molecular weight polyethylene resin into the spinning solvent and stirring; the swelling treatment process comprises the following steps: placing the spinning solution in a swelling kettle, heating to 135 ℃ at a heating rate of 0.8-1.2 ℃/min, and keeping the temperature for 0.5-2 hours; after swelling treatment, the mass percent of solute in the spinning solution is 1-20%.
7. The method of claim 4, wherein the mass ratio of the spinning solvent to the extractant is 1 (1-20).
8. A device for rapidly separating a solvent from ultrahigh molecular weight polyethylene fibers for implementing the method according to any one of claims 1 to 7, which comprises a housing (1) and a drawing roller mechanism, a hot air knife (3) and a spray header (7) respectively arranged in the housing (1), wherein the hot air knife (3) and the spray header (7) are respectively matched with the drawing roller mechanism.
9. The device for quickly separating the solvent from the ultrahigh molecular weight polyethylene fiber used for implementing the method according to claim 8, wherein the side surface of the housing (1) is respectively provided with a fiber inlet (8) and a fiber outlet (9), the pull roll mechanism comprises a pull hot roll (4) matched with the fiber inlet (8) and a plurality of pull cold rolls (2) which are alternately arranged from bottom to top left and right, the fiber outlet (9) is matched with the pull cold roll (2) with the highest position, the hot air knife (3) is positioned at the pull hot roll (4), and the spray headers (7) are provided with a plurality of spray headers and are arranged at the top of the housing (1).
10. The device for rapidly separating the solvent from the ultra-high molecular weight polyethylene fiber used for implementing the method according to claim 8, wherein a guide slope (5) and a reflux groove (6) are further arranged in the housing (1), the guide slope (5) is positioned at the bottom of the housing (1), the top surface of the guide slope (5) is an inclined surface, and the reflux groove (6) is matched with the bottom end of the inclined surface.
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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1974891A (en) * 2006-11-24 2007-06-06 东华大学 Prepn and application of jelly fiber of polyethylene in ultrahigh molecular weight
CN101629329A (en) * 2008-07-18 2010-01-20 宁波荣溢化纤科技有限公司 Method and device for removing solvent from polyethylene fiber
CN102586925A (en) * 2012-02-16 2012-07-18 宁波大成新材料股份有限公司 Method for preparing coloured fibers for ultrahigh molecular weight polyethylene (UHMWPE) ropes and nets
EP2573264A1 (en) * 2011-07-19 2013-03-27 Gerhard Hertel Device for a scraper and scraper assembly with such a device
CN207353361U (en) * 2017-10-23 2018-05-11 沧州明珠锂电隔膜有限公司 A kind of extraction tank scraping fluid panel assembly
CN108950714A (en) * 2018-08-24 2018-12-07 宁波大成新材料股份有限公司 A kind of superelevation is strong, Gao Mo, fine count fiber preparation method
CN109825891A (en) * 2019-03-11 2019-05-31 星宇安防科技股份有限公司 A kind of preparation method and fiber of ultra high molecular weight polyethylene fiber
CN110079881A (en) * 2019-04-30 2019-08-02 上海化工研究院有限公司 A kind of preparation method of environment-friendly, high-intensity high-modulus polyethylene fiber
CN110791821A (en) * 2019-11-13 2020-02-14 浙江金昊新材料有限公司 Method for preparing novel ultrahigh-strength high-modulus polyethylene fiber by one-step method
CN111101217A (en) * 2020-01-19 2020-05-05 上海化工研究院有限公司 High-thermal-conductivity ultra-high molecular weight polyethylene fiber and preparation method thereof

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1974891A (en) * 2006-11-24 2007-06-06 东华大学 Prepn and application of jelly fiber of polyethylene in ultrahigh molecular weight
CN101629329A (en) * 2008-07-18 2010-01-20 宁波荣溢化纤科技有限公司 Method and device for removing solvent from polyethylene fiber
EP2573264A1 (en) * 2011-07-19 2013-03-27 Gerhard Hertel Device for a scraper and scraper assembly with such a device
CN102586925A (en) * 2012-02-16 2012-07-18 宁波大成新材料股份有限公司 Method for preparing coloured fibers for ultrahigh molecular weight polyethylene (UHMWPE) ropes and nets
CN207353361U (en) * 2017-10-23 2018-05-11 沧州明珠锂电隔膜有限公司 A kind of extraction tank scraping fluid panel assembly
CN108950714A (en) * 2018-08-24 2018-12-07 宁波大成新材料股份有限公司 A kind of superelevation is strong, Gao Mo, fine count fiber preparation method
CN109825891A (en) * 2019-03-11 2019-05-31 星宇安防科技股份有限公司 A kind of preparation method and fiber of ultra high molecular weight polyethylene fiber
CN110079881A (en) * 2019-04-30 2019-08-02 上海化工研究院有限公司 A kind of preparation method of environment-friendly, high-intensity high-modulus polyethylene fiber
CN110791821A (en) * 2019-11-13 2020-02-14 浙江金昊新材料有限公司 Method for preparing novel ultrahigh-strength high-modulus polyethylene fiber by one-step method
CN111101217A (en) * 2020-01-19 2020-05-05 上海化工研究院有限公司 High-thermal-conductivity ultra-high molecular weight polyethylene fiber and preparation method thereof

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