CN115627636B - Production method of hollow anisotropic regenerated fiber - Google Patents
Production method of hollow anisotropic regenerated fiber Download PDFInfo
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- CN115627636B CN115627636B CN202211244051.XA CN202211244051A CN115627636B CN 115627636 B CN115627636 B CN 115627636B CN 202211244051 A CN202211244051 A CN 202211244051A CN 115627636 B CN115627636 B CN 115627636B
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- 239000000835 fiber Substances 0.000 title claims abstract description 118
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 86
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 86
- 229920005594 polymer fiber Polymers 0.000 claims abstract description 62
- 239000000463 material Substances 0.000 claims abstract description 53
- 238000009987 spinning Methods 0.000 claims abstract description 32
- 208000012886 Vertigo Diseases 0.000 claims abstract description 31
- 230000002093 peripheral effect Effects 0.000 claims abstract description 24
- 239000004753 textile Substances 0.000 claims abstract description 24
- 238000002844 melting Methods 0.000 claims abstract description 17
- 230000008018 melting Effects 0.000 claims abstract description 17
- 239000004695 Polyether sulfone Substances 0.000 claims abstract description 15
- 229920006393 polyether sulfone Polymers 0.000 claims abstract description 15
- 238000007493 shaping process Methods 0.000 claims abstract description 15
- 239000011248 coating agent Substances 0.000 claims abstract description 11
- 238000000576 coating method Methods 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 20
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 20
- 238000001723 curing Methods 0.000 claims description 14
- 239000003607 modifier Substances 0.000 claims description 12
- 238000007731 hot pressing Methods 0.000 claims description 10
- 239000004408 titanium dioxide Substances 0.000 claims description 10
- 238000005507 spraying Methods 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 9
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 6
- 238000010309 melting process Methods 0.000 claims description 6
- 238000010128 melt processing Methods 0.000 claims description 5
- 238000013007 heat curing Methods 0.000 claims description 4
- 239000006224 matting agent Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 238000002791 soaking Methods 0.000 claims description 4
- 238000007711 solidification Methods 0.000 claims description 4
- 230000008023 solidification Effects 0.000 claims description 4
- 239000002202 Polyethylene glycol Substances 0.000 claims description 3
- 229920001223 polyethylene glycol Polymers 0.000 claims description 3
- 229920001187 thermosetting polymer Polymers 0.000 claims description 3
- 238000004321 preservation Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000000155 melt Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/327—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof
- D06M15/333—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof of vinyl acetate; Polyvinylalcohol
-
- 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
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- 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
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
- D01F6/50—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyalcohols, polyacetals or polyketals
-
- 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
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/94—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of other polycondensation products
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
Abstract
The invention provides a production method of hollow anisotropic regenerated fibers, which comprises the steps of carrying out hollow spinning treatment on a textile solution with polyethersulfone to obtain hollow polymer fibers, and carrying out shaping treatment on the hollow polymer fibers; carrying out melting treatment and spinning treatment on the polyvinyl alcohol material to obtain a straight polyvinyl alcohol fiber yarn; and uniformly coating polyvinyl alcohol fiber filaments on the outer peripheral surface of the hollow polymer fiber, thereby obtaining the hollow anisotropic regenerated fiber, and carrying out heating curing treatment on the hollow anisotropic regenerated fiber, so that the produced hollow anisotropic regenerated fiber has a hollow structure, and can increase the elastic compressibility of the fiber in the cross section direction, and improve the heat preservation performance and rebound superiority of the fiber.
Description
Technical Field
The invention relates to the technical field of textile production, in particular to a production method of hollow anisotropic regenerated fibers.
Background
At present, the textile fibers are all solid fibers with circular cross sections, and the solid fibers are simple in manufacturing process and can be suitable for different weaving occasions. However, the solid fibers have larger weight, when the solid fibers are washed for a plurality of times, different fibers are twisted mutually, and the clearance space between the fibers is not compressed, so that the thermal insulation performance of the clothing is poor, and the shape of the clothing is also influenced.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides a production method of hollow anisotropic regenerated fibers, which is characterized in that spinning solution with polyethersulfone is subjected to hollow spinning treatment to obtain hollow polymer fibers, and the hollow polymer fibers are subjected to shaping treatment; carrying out melting treatment and spinning treatment on the polyvinyl alcohol material to obtain a straight polyvinyl alcohol fiber yarn; and uniformly coating polyvinyl alcohol fiber filaments on the outer peripheral surface of the hollow polymer fiber, thereby obtaining the hollow anisotropic regenerated fiber, and carrying out heating curing treatment on the hollow anisotropic regenerated fiber, so that the produced hollow anisotropic regenerated fiber has a hollow structure, and can increase the elastic compressibility of the fiber in the cross section direction, and improve the heat preservation performance and rebound superiority of the fiber.
The invention provides a production method of hollow anisotropic regenerated fibers, which comprises the following steps:
step S1, preparing a textile solution with polyethersulfone, and carrying out hollow spinning treatment on the textile solution to obtain hollow polymer fibers; shaping the hollow polymer fiber;
step S2, melting the polyvinyl alcohol material, and adding a predetermined amount of modifier into the polyvinyl alcohol material in the melting process; after uniformly melting and mixing the polyvinyl alcohol material and the modifier, carrying out spinning treatment on the molten polyvinyl alcohol material to obtain straight polyvinyl alcohol fiber filaments;
step S3, spraying the outer peripheral surface of the hollow polymer fiber to form a thermal bonding layer, and uniformly coating the polyvinyl alcohol fiber yarn on the outer peripheral surface of the hollow polymer fiber to obtain a hollow anisotropic regenerated fiber; heating and curing the hollow anisotropic regenerated fiber;
and S4, carrying out hot pressing treatment and winding treatment on the hollow anisotropic regenerated fiber.
Further, in the step S1, preparing a textile solution with polyethersulfone, and performing hollow spinning treatment on the textile solution to obtain a hollow polymer fiber specifically includes:
preparing polyether sulfone, polyethylene glycol and dimethyl sulfoxide according to the weight ratio of 10-30:5-15:80-120 to form a textile solution, and carrying out hollow spinning treatment on the textile solution by utilizing a hollow nozzle to obtain the hollow polymer fiber.
Further, in the step S1, the shaping treatment of the hollow polymer fiber specifically includes:
immersing the hollow polymer fiber in a dilute sulfuric acid solution for solidification and shaping treatment; wherein the temperature of the dilute sulfuric acid solution is 30-40 ℃, and the soaking time of the hollow polymer fiber in the dilute sulfuric acid solution is not more than 5min.
Further, in the step S2, the polyvinyl alcohol material is subjected to a melt processing, and the adding of a predetermined amount of the modifier to the polyvinyl alcohol material during the melt processing specifically includes:
melting the polyvinyl alcohol material and converting the melted polyvinyl alcohol material to obtain a molten polyvinyl alcohol material, and adding a titanium dioxide matting agent into the molten polyvinyl alcohol material in the melting process; wherein the weight ratio of the adding amount of the titanium dioxide flatting agent to the molten polyvinyl alcohol material is 1.5-2.5:90-110.
Further, in the step S2, after the polyvinyl alcohol material and the modifier are uniformly melt-mixed, the molten polyvinyl alcohol material is subjected to spinning treatment, so as to obtain a linear polyvinyl alcohol fiber yarn, which specifically includes:
after the polyvinyl alcohol material and the titanium dioxide delustring agent are evenly mixed in a melting way, the molten polyvinyl alcohol material is subjected to spinning treatment by a nozzle with the caliber of 0.05mm, and then the linear polyvinyl alcohol fiber yarn is obtained.
Further, in the step S3, a thermal bonding layer is formed by spraying the outer peripheral surface of the hollow polymer fiber, and the polyvinyl alcohol fiber yarn is uniformly coated on the outer peripheral surface of the hollow polymer fiber, thereby obtaining a hollow anisotropic regenerated fiber specifically comprising:
spraying the outer peripheral surface of the hollow polymer fiber to form a thermal bonding layer with the thickness not exceeding 0.03 mm; and uniformly coating a layer of polyvinyl alcohol fiber yarn on the outer peripheral surface of the hollow polymer fiber, thereby obtaining the hollow anisotropic regenerated fiber.
Further, in the step S3, the heat curing treatment for the hollow anisotropic regenerated fiber specifically includes:
carrying out hot air curing treatment on the hollow anisotropic regenerated fiber so as to realize the thermosetting of the thermal bonding layer; wherein the temperature of the hot air curing treatment is 70-80 ℃.
Further, in the step S4, the hot pressing treatment and the winding treatment for the hollow anisotropic regenerated fiber specifically include:
and carrying out hot pressing treatment at the temperature of 100-120 ℃ on the hollow anisotropic regenerated fiber, and carrying out winding treatment on the hollow regenerated fiber under the condition that the temperature of the hollow anisotropic regenerated fiber is not lower than 60 ℃.
Compared with the prior art, the production method of the hollow anisotropic regenerated fiber carries out hollow spinning treatment on the textile solution with polyethersulfone to obtain hollow polymer fiber, and carries out shaping treatment on the hollow polymer fiber; carrying out melting treatment and spinning treatment on the polyvinyl alcohol material to obtain a straight polyvinyl alcohol fiber yarn; and uniformly coating polyvinyl alcohol fiber filaments on the outer peripheral surface of the hollow polymer fiber, thereby obtaining the hollow anisotropic regenerated fiber, and carrying out heating curing treatment on the hollow anisotropic regenerated fiber, so that the produced hollow anisotropic regenerated fiber has a hollow structure, and can increase the elastic compressibility of the fiber in the cross section direction, and improve the heat preservation performance and rebound superiority of the fiber.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as the appended drawings.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow chart of a method for producing hollow anisotropic regenerated fibers.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, a schematic flow chart of a method for producing hollow anisotropic regenerated fibers according to an embodiment of the invention is shown. The production method of the hollow anisotropic regenerated fiber comprises the following steps:
step S1, preparing a textile solution with polyethersulfone, and carrying out hollow spinning treatment on the textile solution to obtain hollow polymer fibers; shaping the hollow polymer fiber;
step S2, melting the polyvinyl alcohol material, and adding a predetermined amount of modifier into the polyvinyl alcohol material in the melting process; after uniformly melting and mixing the polyvinyl alcohol material and the modifier, carrying out spinning treatment on the molten polyvinyl alcohol material to obtain straight polyvinyl alcohol fiber filaments;
step S3, spraying the outer peripheral surface of the hollow polymer fiber to form a thermal bonding layer, and uniformly coating polyvinyl alcohol fiber filaments on the outer peripheral surface of the hollow polymer fiber to obtain the hollow anisotropic regenerated fiber; heating and curing the hollow regenerated fiber;
and S4, performing hot pressing treatment and winding treatment on the hollow regenerated fibers.
The beneficial effects of the technical scheme are as follows: the production method of the hollow anisotropic regenerated fiber comprises the steps of carrying out hollow spinning treatment on a textile solution with polyethersulfone to obtain hollow polymer fibers, and carrying out shaping treatment on the hollow polymer fibers; carrying out melting treatment and spinning treatment on the polyvinyl alcohol material to obtain a straight polyvinyl alcohol fiber yarn; and uniformly coating polyvinyl alcohol fiber filaments on the outer peripheral surface of the hollow polymer fiber, thereby obtaining the hollow anisotropic regenerated fiber, and carrying out heating curing treatment on the hollow anisotropic regenerated fiber, so that the produced hollow anisotropic regenerated fiber has a hollow structure, and can increase the elastic compressibility of the fiber in the cross section direction, and improve the heat preservation performance and rebound superiority of the fiber.
In one embodiment, in step S1, a textile solution with polyethersulfone is prepared, and the textile solution is subjected to a hollow spinning process, so as to obtain a hollow polymer fiber, which specifically includes:
preparing polyether sulfone, polyethylene glycol and dimethyl sulfoxide according to the weight ratio of 10-30:5-15:80-120 to form a textile solution, and carrying out hollow spinning treatment on the textile solution by utilizing a hollow nozzle to obtain the hollow polymer fiber.
The beneficial effects of the technical scheme are as follows: the spinning solution formed by the preparation according to the formula and the weight ratio can enable the hollow polymer fiber obtained by the follow-up hollow spinning treatment to have good elasticity, and enable the hollow polymer fiber to quickly recover the hollow structure after being radially compressed.
In one embodiment, in step S1, the shaping treatment of the hollow polymer fiber specifically includes:
soaking the hollow polymer fiber in dilute sulfuric acid solution for solidification and shaping; wherein the temperature of the dilute sulfuric acid solution is 30-40 ℃, and the soaking time of the hollow polymer fiber in the dilute sulfuric acid solution is not more than 5min.
The beneficial effects of the technical scheme are as follows: the hollow polymer fiber is soaked in dilute sulfuric acid solution for solidification and shaping treatment, so that the mechanical toughness of the hollow polymer fiber can be improved, and the hollow polymer fiber can be prevented from maintaining a specific shape and structure in the long-term use process.
In one embodiment, in step S2, the polyvinyl alcohol material is subjected to a melt process, and adding a predetermined amount of a modifier to the polyvinyl alcohol material during the melt process specifically includes:
melting the polyvinyl alcohol material and converting the melted polyvinyl alcohol material to obtain a molten polyvinyl alcohol material, and adding a titanium dioxide matting agent into the molten polyvinyl alcohol material in the melting process; wherein the weight ratio of the adding amount of the titanium dioxide flatting agent to the molten polyvinyl alcohol material is 1.5-2.5:90-110.
The beneficial effects of the technical scheme are as follows: titanium dioxide matting agent is added to the molten polyvinyl alcohol material during the melt processing, so that the gloss softness of the polyvinyl alcohol material can be improved.
In one embodiment, in step S2, after the polyvinyl alcohol material and the modifier are uniformly melt-mixed, the molten polyvinyl alcohol material is subjected to spinning treatment, so as to obtain a linear polyvinyl alcohol fiber yarn specifically including:
after the polyvinyl alcohol material and the titanium dioxide delustring agent are evenly mixed in a melting way, the molten polyvinyl alcohol material is subjected to spinning treatment by a nozzle with the caliber of 0.05mm, and then the linear polyvinyl alcohol fiber yarn is obtained.
The beneficial effects of the technical scheme are as follows: the molten polyvinyl alcohol material is subjected to spinning treatment by using a nozzle with a caliber of 0.05mm, so that the fineness of the polyvinyl alcohol fiber yarn can be reduced.
In one embodiment, in step S3, a thermal bonding layer is formed by spraying the outer peripheral surface of the hollow polymer fiber, and the outer peripheral surface of the hollow polymer fiber is uniformly coated with polyvinyl alcohol fiber yarn, so that the hollow anisotropic regenerated fiber is obtained specifically including:
spraying the outer peripheral surface of the hollow polymer fiber to form a thermal bonding layer with the thickness not exceeding 0.03 mm; and uniformly coating a layer of polyvinyl alcohol fiber yarn on the outer peripheral surface of the hollow polymer fiber, thereby obtaining the hollow anisotropic regenerated fiber.
The beneficial effects of the technical scheme are as follows: the polyvinyl alcohol fiber yarn is coated on the outer peripheral surface of the hollow polymer fiber by the thermal bonding layer, so that the polyvinyl alcohol fiber yarn and the hollow polymer fiber can be tightly combined, and the hollow regenerated fiber can have the mechanical properties of polyethersulfone and polyvinyl alcohol at the same time.
In one embodiment, in step S3, the heat curing treatment for the hollow regenerated fiber specifically includes:
carrying out hot air curing treatment on the hollow anisotropic regenerated fiber so as to realize the thermosetting of the thermal bonding layer; wherein the temperature of the hot air curing treatment is 70-80 ℃.
The beneficial effects of the technical scheme are as follows: the hollow anisotropic regenerated fiber is subjected to hot air curing treatment, so that the thermal bonding layer can be subjected to heat curing, and the separation of the polyvinyl alcohol fiber yarn and the hollow polymer fiber is avoided.
In one embodiment, in step S4, the hot pressing treatment and the winding treatment for the hollow regenerated fiber specifically include:
carrying out hot pressing treatment on the hollow anisotropic regenerated fiber at the temperature of 100-120 ℃, and carrying out winding treatment on the hollow regenerated fiber under the condition that the temperature of the hollow anisotropic regenerated fiber is not lower than 60 ℃.
The beneficial effects of the technical scheme are as follows: the hollow anisotropic regenerated fiber is subjected to hot pressing treatment at the temperature of 100-120 ℃, so that structural shaping can be carried out on the hollow anisotropic regenerated fiber, and the toughness of the hollow anisotropic regenerated fiber is improved.
As is apparent from the above examples, the method for producing hollow anisotropic regenerated fibers comprises subjecting a textile solution having polyethersulfone to hollow spinning treatment to obtain hollow polymer fibers, and subjecting the hollow polymer fibers to sizing treatment; carrying out melting treatment and spinning treatment on the polyvinyl alcohol material to obtain a straight polyvinyl alcohol fiber yarn; and uniformly coating polyvinyl alcohol fiber filaments on the outer peripheral surface of the hollow polymer fiber, thereby obtaining the hollow anisotropic regenerated fiber, and carrying out heating curing treatment on the hollow anisotropic regenerated fiber, so that the produced hollow anisotropic regenerated fiber has a hollow structure, and can increase the elastic compressibility of the fiber in the cross section direction, and improve the heat preservation performance and rebound superiority of the fiber.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (4)
1. The production method of the hollow anisotropic regenerated fiber is characterized by comprising the following steps:
step S1, preparing a textile solution with polyethersulfone, and carrying out hollow spinning treatment on the textile solution to obtain hollow polymer fibers; shaping the hollow polymer fiber; in the step S1, preparing a textile solution with polyethersulfone, and performing hollow spinning treatment on the textile solution to obtain a hollow polymer fiber, which specifically comprises:
preparing polyether sulfone, polyethylene glycol and dimethyl sulfoxide according to the weight ratio of 10-30:5-15:80-120 to form a textile solution, and carrying out hollow spinning treatment on the textile solution by utilizing a hollow nozzle to obtain hollow polymer fibers;
in the step S1, the shaping treatment of the hollow polymer fiber specifically includes: immersing the hollow polymer fiber in a dilute sulfuric acid solution for solidification and shaping treatment; wherein the temperature of the dilute sulfuric acid solution is 30-40 ℃, and the soaking time of the hollow polymer fiber in the dilute sulfuric acid solution is not more than 5min;
step S2, melting the polyvinyl alcohol material, and adding a predetermined amount of modifier into the polyvinyl alcohol material in the melting process; after uniformly melting and mixing the polyvinyl alcohol material and the modifier, carrying out spinning treatment on the molten polyvinyl alcohol material to obtain straight polyvinyl alcohol fiber filaments;
in the step S2, the polyvinyl alcohol material is subjected to a melt processing, and a predetermined amount of a modifier is added to the polyvinyl alcohol material during the melt processing, specifically including:
melting the polyvinyl alcohol material and converting the melted polyvinyl alcohol material to obtain a molten polyvinyl alcohol material, and adding a titanium dioxide matting agent into the molten polyvinyl alcohol material in the melting process; wherein, the weight ratio of the adding amount of the titanium dioxide delustrant to the melted polyvinyl alcohol material is 1.5-2.5:90-110;
in the step S2, after the polyvinyl alcohol material and the modifier are uniformly melt-mixed, the molten polyvinyl alcohol material is subjected to spinning treatment, and the obtained linear polyvinyl alcohol fiber yarn specifically comprises: after uniformly melting and mixing the polyvinyl alcohol material and the titanium dioxide delustrant, carrying out spinning treatment on the molten polyvinyl alcohol material by using a nozzle with the caliber of 0.05mm to obtain a straight polyvinyl alcohol fiber yarn;
step S3, spraying the outer peripheral surface of the hollow polymer fiber to form a thermal bonding layer, and uniformly coating the polyvinyl alcohol fiber yarn on the outer peripheral surface of the hollow polymer fiber to obtain a hollow anisotropic regenerated fiber; heating and curing the hollow anisotropic regenerated fiber;
and S4, carrying out hot pressing treatment and winding treatment on the hollow anisotropic regenerated fiber.
2. The method for producing hollow anisotropic regenerated fiber according to claim 1, wherein:
in the step S3, a thermal bonding layer is formed by spraying the outer peripheral surface of the hollow polymer fiber, and the polyvinyl alcohol fiber yarn is uniformly coated on the outer peripheral surface of the hollow polymer fiber, thereby obtaining a hollow anisotropic regenerated fiber specifically comprising:
spraying the outer peripheral surface of the hollow polymer fiber to form a thermal bonding layer with the thickness not exceeding 0.03 mm; and uniformly coating a layer of polyvinyl alcohol fiber yarn on the outer peripheral surface of the hollow polymer fiber, thereby obtaining the hollow anisotropic regenerated fiber.
3. The method for producing hollow anisotropic regenerated fiber according to claim 2, wherein:
in the step S3, the heat curing treatment for the hollow anisotropic regenerated fiber specifically includes:
carrying out hot air curing treatment on the hollow anisotropic regenerated fiber so as to realize the thermosetting of the thermal bonding layer; wherein the temperature of the hot air curing treatment is 70-80 ℃.
4. A method for producing hollow anisotropic regenerated fibers as claimed in claim 3, characterized in that:
in the step S4, the hot pressing treatment and the winding treatment for the hollow anisotropic regenerated fiber specifically include:
and carrying out hot pressing treatment at the temperature of 100-120 ℃ on the hollow anisotropic regenerated fiber, and carrying out winding treatment on the hollow anisotropic regenerated fiber under the condition that the temperature of the hollow anisotropic regenerated fiber is not lower than 60 ℃.
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| CN111705369A (en) * | 2020-06-19 | 2020-09-25 | 江苏工程职业技术学院 | Light warm-keeping down-like fiber with V-shaped three-dimensional structure |
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2022
- 2022-10-12 CN CN202211244051.XA patent/CN115627636B/en active Active
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| CN106917267A (en) * | 2017-04-20 | 2017-07-04 | 河南工程学院 | A kind of preparation method of antibacterial high efficiency filter non-woven fabrics |
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| CN110237721A (en) * | 2019-06-28 | 2019-09-17 | 武汉纺织大学 | A kind of gradient pore structured hollow-fibre membrane |
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