CN115627557A - Modified graphene fiber and preparation method and application thereof - Google Patents
Modified graphene fiber and preparation method and application thereof Download PDFInfo
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- CN115627557A CN115627557A CN202211102477.1A CN202211102477A CN115627557A CN 115627557 A CN115627557 A CN 115627557A CN 202211102477 A CN202211102477 A CN 202211102477A CN 115627557 A CN115627557 A CN 115627557A
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical class [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 166
- 239000000835 fiber Substances 0.000 title claims abstract description 91
- 238000002360 preparation method Methods 0.000 title claims abstract description 25
- 229920000728 polyester Polymers 0.000 claims abstract description 44
- 238000002156 mixing Methods 0.000 claims abstract description 22
- 239000002131 composite material Substances 0.000 claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 claims abstract description 16
- 238000009987 spinning Methods 0.000 claims abstract description 16
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 15
- 238000001125 extrusion Methods 0.000 claims abstract description 6
- 238000005469 granulation Methods 0.000 claims abstract description 5
- 230000003179 granulation Effects 0.000 claims abstract description 5
- 229910021389 graphene Inorganic materials 0.000 claims description 44
- 229920000742 Cotton Polymers 0.000 claims description 21
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 16
- 229910001923 silver oxide Inorganic materials 0.000 claims description 16
- NDVLTYZPCACLMA-UHFFFAOYSA-N silver oxide Substances [O-2].[Ag+].[Ag+] NDVLTYZPCACLMA-UHFFFAOYSA-N 0.000 claims description 16
- 229920002334 Spandex Polymers 0.000 claims description 10
- 238000009960 carding Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- 239000004759 spandex Substances 0.000 claims description 10
- 239000012535 impurity Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 5
- 239000000155 melt Substances 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000005253 cladding Methods 0.000 claims description 2
- 239000004753 textile Substances 0.000 abstract description 15
- 239000004744 fabric Substances 0.000 abstract description 13
- 230000002265 prevention Effects 0.000 abstract description 10
- 230000037303 wrinkles Effects 0.000 abstract description 6
- 230000003115 biocidal effect Effects 0.000 abstract description 5
- 230000006872 improvement Effects 0.000 abstract description 5
- 230000004089 microcirculation Effects 0.000 abstract description 5
- 230000003068 static effect Effects 0.000 abstract description 5
- 230000000052 comparative effect Effects 0.000 description 11
- 238000001816 cooling Methods 0.000 description 6
- 230000000844 anti-bacterial effect Effects 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000005543 nano-size silicon particle Substances 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011802 pulverized particle Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
Classifications
-
- 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
- D01F6/92—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 polyesters
-
- 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
- D01F1/09—Addition of substances to the spinning solution or to the melt for making electroconductive or anti-static filaments
-
- 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
- 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
- D01F1/103—Agents inhibiting growth of microorganisms
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
- D02G3/04—Blended or other yarns or threads containing components made from different materials
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/32—Elastic yarns or threads ; Production of plied or cored yarns, one of which is elastic
- D02G3/328—Elastic yarns or threads ; Production of plied or cored yarns, one of which is elastic containing elastane
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/36—Cored or coated yarns or threads
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
- D02G3/441—Yarns or threads with antistatic, conductive or radiation-shielding properties
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
- D02G3/449—Yarns or threads with antibacterial properties
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
- D10B2201/01—Natural vegetable fibres
- D10B2201/02—Cotton
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/10—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyurethanes
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/22—Physical properties protective against sunlight or UV radiation
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Artificial Filaments (AREA)
Abstract
The invention belongs to the technical field of textiles, and particularly discloses a modified graphene fiber and a preparation method and application thereof, wherein the preparation method of the modified graphene fiber comprises the following steps: 1) Mixing the polyester chips with the valence-removed electronically modified graphene at a high speed, and then performing melt blending, extrusion and granulation to obtain graphene-polyester composite master batches; 2) Spinning the graphene-polyester composite master batch obtained in the step 1) to obtain the modified graphene fiber. The modified graphene fiber provided by the invention is applied to the manufacturing of the fabric, so that the obtained fabric has the functions of low-temperature far infrared, improvement of human microcirculation, antibiosis, mite removal, static prevention, ultraviolet prevention and the like, has good hygroscopicity, elasticity and wrinkle resistance, is soft in hand feeling and comfortable to use, and is particularly suitable for manufacturing household textiles.
Description
Technical Field
The invention relates to the technical field of textiles, in particular to a modified graphene fiber and a preparation method and application thereof.
Background
With the upgrading of market consumption demands, functional textiles are more and more appreciated and favored by consumers. The functional textile is a textile having not only good moisture absorption and wrinkle resistance but also antibacterial, anti-mite, and ultraviolet-proof functions. In order to obtain the above functional textiles, attempts have been made to: 1) Modifying the fiber by using functional nano materials such as nano silicon dioxide, nano titanium dioxide, nano zinc oxide, nano anion powder and the like, so that the fiber has corresponding functions; 2) And modifying the fiber by using graphene. The textile woven by the fiber obtained by modifying the graphene has the functions of low-temperature far infrared, improvement of human body microcirculation, antibiosis, mite removal, static prevention, ultraviolet prevention and the like. In view of the fact that the functions of the fiber obtained after the graphene modified fiber are more abundant, the utilization of the graphene modified fiber becomes a hot spot of research at home and abroad.
However, since the specific surface area of graphene is large, the graphene is easily agglomerated and is not easily dispersed in a matrix, and the performance of excellent performance of graphene is affected, so that the performance of the graphene modified fiber is affected. Moreover, after the graphene is modified, although the fiber has the antibacterial function and the like of graphene, the fiber is difficult to simultaneously take moisture absorption and wrinkle resistance into consideration, for example, after the graphene is modified, although the polyester has the antibacterial function and the like, the moisture absorption of the polyester textile is still poor, and the application of the polyester textile is limited.
Disclosure of Invention
In view of the above drawbacks of the prior art, an object of the present invention is to provide a modified graphene fiber, and a preparation method and an application thereof, for solving the problem in the prior art that the properties of the modified graphene fiber are adversely affected due to poor dispersibility of graphene.
In order to achieve the above objects and other related objects, the present invention provides a method for preparing a modified graphene fiber, comprising the steps of:
(1) Preparing the graphene-polyester composite master batch: mixing polyester chips with the valence-removed electronically-modified graphene at a high speed, and then performing melt blending, extrusion and granulation to obtain graphene-polyester composite master batches;
(2) Preparing modified graphene fibers: and (2) spinning the graphene-polyester composite master batch obtained in the step (1) to obtain the modified graphene fiber.
Optionally, in the step (1), the nano silver oxide and the valence-electron-removed modified graphene are uniformly mixed to form a mixture, and then the mixture is mixed with the polyester chips at a high speed.
Optionally, in step (1), the de-valence electron modified graphene is one or more of fluorinated graphene, nitrogenated graphene, boronated graphene and silicified graphene.
Optionally, in the step (1), the mass ratio of the valence-removed electron-modified graphene to the polyester chips is 5-10.
Optionally, in the step (1), the mass of the nano silver oxide is 8-15% of the mass of the valence-removed electron modified graphene.
Alternatively, in the step (1), the high-speed mixing is performed in a manner of stirring at a rotation speed of 10000 to 25000rpm for 0.5 to 4min.
Optionally, in step (1), the melt blending process is carried out in an ultrasonic field.
The modified graphene fiber core-spun yarn comprises a core wire and a cladding fiber, wherein the core wire comprises a modified graphene fiber.
Optionally, the core filament further comprises spandex filaments.
A manufacturing method of a modified graphene fiber core-spun yarn comprises a cotton carding step, a drawing step, a roving step and a spinning step;
in the cotton carding step, cotton fibers are loosened and subjected to impurity removal to be made into cotton rolls, and the cotton rolls are subjected to carding and impurity removal to be made into raw strips;
in the drawing step, raw slivers are combined and drafted to be made into cooked slivers;
in the roving step, the drawn sliver is drafted and twisted to prepare roving;
in the spinning step, after the rough yarn is drafted and twisted, core yarn is added from a front upper roller to spin the rough yarn into spun yarn; the core wire comprises modified graphene fibers, or the core wire comprises the modified graphene fibers and spandex filaments.
The invention also provides the modified graphene fiber prepared by the preparation method.
The invention also provides application of the modified graphene fiber in fabric manufacturing.
As described above, the modified graphene fiber, the preparation method and the application thereof of the present invention have the following beneficial effects:
according to the invention, the modified graphene fiber is prepared by mixing the valence-removed electronic modified graphene into the polyester slices, and has the functions of low-temperature far infrared, improvement of human microcirculation, antibiosis, mite removal, static prevention, ultraviolet prevention and the like of graphene, and has the excellent characteristics of good wrinkle resistance and strength of polyester, so that the core-spun yarn obtained by coating the modified graphene fiber (the modified graphene fiber is used as a core wire) with cotton fiber and the fabric woven by the core-spun yarn have the functions of low-temperature far infrared, improvement of human microcirculation, antibiosis, mite removal, static prevention, ultraviolet prevention and the like, have good hygroscopicity, elasticity and wrinkle resistance, are soft in hand feeling and comfortable to use, and are particularly suitable for manufacturing household textiles.
In addition, the valence-removed electron modified graphene is added into the polyester chips, and the intermolecular force among graphene layers is reduced due to the graphene after valence removal, so that the stacking of graphene layers is reduced, the characteristic of mutual attraction of graphene is changed, the problem of graphene agglomeration is effectively solved, the uniformity of graphene dispersion in polyester is improved, and the degree of performance of graphene in modified graphene fibers is improved. Moreover, in the invention, the nano silver oxide is doped in the valence-removed electron modified graphene, so that the dispersibility of the valence-removed electron modified graphene can be further improved, the performance of the graphene in the modified graphene fiber can be further improved, and meanwhile, the nano silver oxide also has an antibacterial function, so that the antibacterial property of the modified graphene fiber, the core-spun yarn and the fabric woven by the modified graphene fiber or the core-spun yarn are also improved.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
The invention provides a modified graphene fiber, and a preparation method thereof comprises the following steps:
(1) Preparing the graphene-polyester composite master batch: and (3) mixing the polyester chips with the valence-removed electronically modified graphene at a high speed, and then performing melt blending, extrusion and granulation to obtain the graphene-polyester composite master batch. In the step, the mass ratio of the valence-removed electron modified graphene to the polyester chips is 5-10; the valence-removed electron modified graphene is one or more of fluorinated graphene, nitrogenated graphene, boronized graphene and silicified graphene; the high-speed mixing mode is that the mixture is stirred for 0.5 to 4min at the rotating speed of 10000 to 25000 rpm; the temperature of the melt blending is 270-295 ℃.
(2) Preparing modified graphene fibers: and (2) spinning the graphene-polyester composite master batch obtained in the step (1), cooling, forming, oiling, stretching and winding to obtain the modified graphene fiber. In the step, the graphene-polyester composite master batch in the step (1) is dried at the drying temperature of 110-140 ℃, so that the water content of the graphene-polyester composite master batch is reduced to be below 0.4%; the spinning temperature is 290 ℃; the cooling is cross air blow cooling, the temperature of the cross air blow is 20-30 ℃, the humidity of the cross air blow is 70%, and the speed of the cross air blow is 0.3-0.6 m/s; the winding speed is below 1000 m/min.
The invention also provides a modified graphene fiber core-spun yarn which is made of cotton fiber coated core filaments, and the manufacturing method comprises the following steps:
step one, core wire preparation step
In the core yarn preparation step, the core yarn comprises modified graphene fiber and spandex filament, the core yarn is formed by twisting the spandex filament and the modified graphene fiber, and the number ratio of the spandex filament to the modified graphene fiber is 1:1-2.
Step two, cotton carding step
Opening cotton fiber, removing impurities to obtain cotton roll, carding cotton roll, and removing impurities to obtain raw strips.
Step three, drawing step
And combining and drafting the raw slivers in the step two to prepare cooked slivers.
Step four, roving step
Drawing and twisting the drawn slivers in the third step to prepare roving. Wherein the ingot speed is 750-820 r/min, the twist coefficient is 95-100, the back zone draft multiple is 1.1-1.4, and the mechanical total draft multiple is 7-8.
Step five, spinning step
And (4) after drafting and twisting the rough yarn in the fourth step, adding core yarn from the front upper roller, and spinning into spun yarn. Wherein the ingot speed is 12000-15000 r/min, the twist coefficient is 340-380, the back zone draft multiple is 1.1-1.3, and the mechanical total draft multiple is 45-47.
Step six, spooling step
And D, removing yarn defects of the spun yarn in the step V through an electronic yarn cleaner, connecting bobbin yarns, and manufacturing a yarn barrel.
In another embodiment of the invention, in the step (1) of the preparation method of the modified graphene fiber, the nano silver oxide and the valence electron-removed modified graphene are uniformly mixed to form a mixture, and then the mixture is mixed with the polyester chips at a high speed; wherein the mass of the nano silver oxide is 8-15% of that of the valence-electron-removed modified graphene, and the nano silver oxide is stirred for 0.5-4 min at the rotating speed of 10000-25000 rpm in a high-speed mixing mode.
In another embodiment of the present invention, in step (1) of the preparation method of the modified graphene fiber, the melt blending process is performed in an ultrasonic field, and the ultrasonic power is 150 to 170W.
The invention also provides a fabric woven by the modified graphene fiber or the modified graphene fiber core-spun yarn.
The invention also provides application of the fabric in household textiles.
The present invention will be described in detail with reference to the following specific examples. It is also to be understood that the following examples are illustrative of the present invention and are not to be construed as limiting the scope of the invention, and that insubstantial modifications and adaptations of the invention as described above will now occur to those skilled in the art. The specific process parameters and the like of the following examples are also only one example of suitable ranges, i.e., those skilled in the art can select the appropriate ranges through the description herein, and are not limited to the specific values exemplified below.
Example 1
A modified graphene fiber core-spun yarn is prepared by wrapping core yarns with cotton fibers, and the preparation method comprises the following steps:
step one, core wire preparation step
In the core yarn preparation step, the core yarn comprises modified graphene fiber and spandex filament, the core yarn is formed by twisting the spandex filament and the modified graphene fiber, and the number ratio of the spandex filament to the modified graphene fiber is 1:1. The preparation method of the modified graphene fiber comprises the following steps:
(1) Preparing the graphene-polyester composite master batch: respectively drying the polyester chips and the valence-removing electron modified graphene at 120 ℃ to ensure that the water content of the polyester chips and the valence-removing electron modified graphene is below 0.4 percent. And then mixing the polyester chips with the valence-removed electronically modified graphene at a high speed, and then carrying out melt blending extrusion and granulation by a double-screw extruder to obtain the graphene-polyester composite master batch.
In the step, the mass ratio of the valence-removed electron modified graphene to the polyester chips is 5. The valence-removed electron modified graphene is nitrided graphene, and the particle size of the valence-removed electron modified graphene is 20-1000 nm. The high-speed mixing mode is stirring for 4min at the rotating speed of 10000rpm, the used equipment is a pulverizer, and the pulverized particle size is 18-200 meshes.
In the process of double-screw extrusion, the temperatures of a first zone, a second zone, a third zone, a fourth zone, a fifth zone and a sixth zone of the double-screw extruder are 270 ℃, 275 ℃, 278 ℃, 280 ℃, 285 ℃ and 290 ℃ respectively.
(2) Preparing modified graphene fibers: and (2) drying the graphene-polyester composite master batch in the step (1), wherein the drying temperature is 120 ℃, so that the water content of the graphene-polyester composite master batch is reduced to be below 0.4%. And adding the dried graphene-polyester composite master batch into a screw extruder, extruding the mixture into a spinning box for spinning, and then cooling, forming, oiling, stretching and winding to obtain the modified graphene fiber.
In the step, the temperature of the spinning box is 290 ℃; the cooling is cross air blow cooling, the temperature of the cross air blow is 25 ℃, the humidity of the cross air blow is 70 percent, and the speed of the cross air blow is 0.4m/s; the winding speed was 900m/min.
Step two, cotton carding step
Opening cotton fiber, removing impurities to obtain cotton roll, carding cotton roll, and removing impurities to obtain raw strips.
Step three, drawing step
And (5) combining and drafting the eight raw slivers obtained in the second step to obtain half-cooked slivers, and combining and drafting the eight half-cooked slivers to obtain mature slivers.
Step four, roving step
Drafting and twisting the drawn sliver in the third step to prepare roving. Wherein the ingot speed is 800r/min, the twist coefficient is 96, the back zone draft multiple is 1.26, and the mechanical total traction multiple is 7.55.
Step five, spinning step
And (3) after drafting and twisting the rough yarn in the fourth step, adding core yarn from the front upper roller, and spinning the rough yarn into spun yarn. Wherein the ingot speed is 12000r/min, the twist coefficient is 350, the back zone draft multiple is 1.28, and the mechanical total draft multiple is 46.52.
Step six, spooling step
And D, removing yarn defects of the spun yarn in the step V through an electronic yarn cleaner, connecting bobbin yarns, and manufacturing a yarn barrel. Thus, the modified graphene fiber core-spun yarn is obtained.
Example 2
The present embodiment is different from embodiment 1 in that: in this embodiment, in step (1) of the preparation method of the modified graphene fiber, the mass ratio of the valence-removed electron-modified graphene to the polyester chips is 8.
Example 3
The present embodiment is different from embodiment 1 in that: in this embodiment, in step (1) of the preparation method of the modified graphene fiber, the mass ratio of the valence-removed electron-modified graphene to the polyester chips is 1.
Example 4
The present embodiment is different from embodiment 3 in that: in this embodiment, in step (1) of the preparation method of the modified graphene fiber, the valence-removed electron modified graphene is silicified graphene.
Example 5
The present embodiment is different from embodiment 3 in that: in this embodiment, in step (1) of the preparation method of the modified graphene fiber, the valence-removed electron-modified graphene is nitrided graphene and boronized graphene, and the mass ratio of the nitrided graphene to the boronized graphene is 1:1. In the present invention, the mass ratio of the nitrided graphene to the boronated graphene may be any ratio.
Example 6
The present embodiment is different from embodiment 1 in that: in the embodiment, in the step (1) of the preparation method of the modified graphene fiber, firstly, uniformly mixing nano silver oxide and the valence-electron-removed modified graphene to form a mixture, and then, mixing the mixture with the polyester chips at a high speed; wherein the mass of the nano silver oxide is 8% of that of the valence-removed electron modified graphene.
Example 7
This embodiment is different from embodiment 6 in that: in this embodiment, the mass of the nano silver oxide is 15% of the mass of the valence-electron-removed modified graphene.
Example 8
This embodiment is different from embodiment 6 in that: in this embodiment, the mass of the nano silver oxide is 10% of the mass of the valence-electron-removed modified graphene.
Example 9
The present embodiment is different from embodiment 1 in that: in this embodiment, in step (1) of the preparation method of the modified graphene fiber, the twin-screw extruder is located in an ultrasonic field, and specifically, the ultrasonic power is 170W.
Comparative example 1
This comparative example differs from example 1 in that: in this comparative example, in step (1) of the preparation method of the modified graphene fiber, the ordinary graphene was used instead of the de-valent electron modified graphene, and the rest were the same.
Comparative example 2
This comparative example differs from example 6 in that: in this comparative example, in step (1) of the method for preparing a modified graphene fiber, nano-zinc oxide was used instead of nano-silver oxide, and the rest were the same.
The modified graphene fiber core-spun yarns obtained in the embodiments 1 to 8 and the comparative examples 1 and 2 are woven into the fabric, and the fabric has the functions of low-temperature far infrared, improvement of human body microcirculation, antibiosis, mite removal, static prevention, ultraviolet prevention and the like, has good hygroscopicity, elasticity and wrinkle resistance, is soft in hand feeling and comfortable to use, and is particularly suitable for manufacturing household textiles.
The far infrared properties of the fabrics obtained in examples 1 to 8 and comparative example 1 were measured according to "detection and evaluation of far infrared properties of textile in GB/T30127-2013", and the specific results are shown in Table 1.
Table 1 far infrared performance table of middle fabric in each example and each comparative example
( Note: the GB/T30127-2013 textile far infrared performance detection and evaluation stipulates that if the far infrared emissivity of a sample is not lower than 0.88 and the far infrared radiation temperature rise value is not lower than 1.4 ℃, the sample has a far infrared function )
Compared with the comparative example 1, the far infrared emissivity and the far infrared radiation temperature rise value of the example 1 are both greater than those of the comparative example 1, which shows that the dispersibility of the valence-removed electron modified graphene in the modified graphene fiber is better than that of the graphene in the modified graphene fiber.
Example 1 compared to example 9, example 9 has a far-infrared emissivity and a far-infrared radiation temperature rise value greater than those of example 1, which indicates that: the dispersibility of the valence-removed electron modified graphene in the modified graphene fiber can be effectively improved by ultrasonic.
Compared with example 1, in example 6, the far infrared emissivity and the far infrared radiation temperature rise value of example 6 are both greater than those of example 1, which shows that the dispersibility of the valence-removed electron modified graphene in the modified graphene fiber can be effectively improved by the incorporation of the nano silver oxide.
In summary, in the invention, the valence-removed electron-modified graphene can be well dispersed in the modified graphene fiber, so that the graphene can better exert the self-performance, and the dispersibility of the valence-removed electron-modified graphene in the modified graphene fiber is improved by the ultrasonic action and the mode of doping the nano silver oxide, so that the graphene can further better exert the self-performance.
In addition, the addition of the valence-removing electron modified graphene affects the mechanical properties of the modified graphene fiber, namely, the breaking strength of the modified graphene fiber is reduced. And with the increase of the addition amount of the valence-removing electron modified graphene, the breaking strength of the modified graphene fiber is gradually recovered, and even more superior to that of the common polyester filament. Therefore, the addition amount of the valence-removed electron modified graphene is limited to 5-10% of the polyester chip quality, so that the graphene can better exert the performance of the graphene, the fabric has better functions, the fabric can keep good mechanical properties, and the processing is convenient.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A preparation method of a modified graphene fiber is characterized by comprising the following steps:
(1) Preparing the graphene-polyester composite master batch: mixing polyester chips with the valence-removed electronically-modified graphene at a high speed, and then performing melt blending, extrusion and granulation to obtain graphene-polyester composite master batches;
(2) Preparing modified graphene fibers: spinning the graphene-polyester composite master batch obtained in the step (1) to obtain the modified graphene fiber.
2. The method for producing a modified graphene fiber according to claim 1, wherein: in the step (1), the nano silver oxide and the valence-electron-removing modified graphene are uniformly mixed to form a mixture, and then the mixture is mixed with the polyester chips at a high speed.
3. The method for producing a modified graphene fiber according to claim 1 or 2, characterized in that: in the step (1), the valence-removed electron modified graphene is one or more of fluorinated graphene, nitrogenated graphene, boronated graphene and silicified graphene.
4. The method for producing a modified graphene fiber according to claim 2, characterized in that: in the step (1), the mass ratio of the valence-removed electron modified graphene to the polyester chips is 5-10;
and/or in the step (1), the mass of the nano silver oxide is 8-15% of that of the valence-removed electron modified graphene;
and/or in the step (1), stirring for 0.5-4 min at the rotation speed of 10000-25000 rpm in a high-speed mixing mode.
5. The method for producing a modified graphene fiber according to claim 1, wherein: in step (1), the melt blending process is carried out in an ultrasonic field.
6. A modified graphene fiber obtained by the production method according to any one of claims 1 to 5.
7. Use of the modified graphene fiber of claim 6 in the manufacture of a facing.
8. The utility model provides a modified graphene fiber covering yarn, includes core silk and cladding fibre, its characterized in that: the core filament comprises modified graphene fibers.
9. The modified graphene fiber core-spun yarn of claim 8, wherein: the core yarn also comprises spandex filaments.
10. A manufacturing method of modified graphene fiber core-spun yarns is characterized by comprising the following steps: the method comprises a cotton carding step, a drawing step, a roving step and a spinning step;
in the cotton carding step, cotton fibers are loosened and subjected to impurity removal to be made into cotton rolls, and the cotton rolls are subjected to carding and impurity removal to be made into raw strips;
in the drawing step, raw slivers are combined and drafted to be made into cooked slivers;
in the roving step, the drawn sliver is drafted and twisted to prepare roving;
in the spinning step, after the rough yarn is drafted and twisted, core yarn is added from a front upper roller to spin the rough yarn into spun yarn; the core wire comprises modified graphene fibers, or the core wire comprises modified graphene fibers and spandex filaments.
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