CN108411470B - Graphene dual-function knitted fabric - Google Patents
Graphene dual-function knitted fabric Download PDFInfo
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- CN108411470B CN108411470B CN201810078502.4A CN201810078502A CN108411470B CN 108411470 B CN108411470 B CN 108411470B CN 201810078502 A CN201810078502 A CN 201810078502A CN 108411470 B CN108411470 B CN 108411470B
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
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- 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
- D01D5/06—Wet spinning methods
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- 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
- D01D5/08—Melt spinning methods
-
- 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
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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
- D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
- D01F2/06—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose
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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
- 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
- D01F6/90—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 polyamides
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B1/14—Other fabrics or articles characterised primarily by the use of particular thread materials
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- 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
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- 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
- D10B2201/20—Cellulose-derived artificial fibres
- D10B2201/22—Cellulose-derived artificial fibres made from cellulose solutions
- D10B2201/24—Viscose
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- 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
- D10B2331/02—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides
-
- 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
- D10B2401/06—Load-responsive characteristics
- D10B2401/063—Load-responsive characteristics high strength
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- 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
- D10B2401/13—Physical properties anti-allergenic or anti-bacterial
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- 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
- D10B2501/00—Wearing apparel
- D10B2501/04—Outerwear; Protective garments
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Artificial Filaments (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Woven Fabrics (AREA)
Abstract
The invention relates to a graphene dual-function knitted fabric which comprises a graphene composite fiber layer and a common fiber layer; the graphene composite fiber layer is made by weaving blended yarns of graphene nylon fibers and graphene viscose fibers. The graphene dual-function knitted fabric developed by the invention is used for playing the higher thermal conductivity and the unique far infrared heating function of the graphene nylon composite fiber on the knitted sportswear fabric by preparing the graphene composite fiber layer by adopting the blended yarn of the graphene nylon fiber and the graphene viscose fiber, so that sportsmen feel comfortable to wear. The graphene dual-function fabric can be widely used for producing sports clothes and has a very wide application prospect.
Description
Technical Field
The invention relates to the technical field of textiles, in particular to a graphene dual-function knitted fabric.
Background
Graphene is the most subversive new material in the century, and a graphene monoatomic layer two-dimensional sheet structure enables graphene to have peculiar performance in many aspects, and can be used as super capacitors, high-efficiency energy storage batteries, ultrathin and ultra-light aerospace materials, ultra-tough and ultra-strong body armor materials, novel medical materials, nano sensor materials and the like. The graphene is compounded with common fibers, has special functions of antibiosis, mite resistance, heat resistance, cutting resistance, static resistance, ultraviolet resistance, far infrared heating, cool conduction and the like, and can be widely applied to fabrics, clothes, home textiles, knitting and other textiles.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a graphene dual-function fabric.
The purpose of the invention is realized by the following technical scheme:
the invention provides a graphene dual-function knitted fabric which comprises a graphene composite fiber layer and a common fiber layer.
Preferably, the graphene composite fiber layer is prepared by weaving blended yarns of graphene nylon fibers and graphene viscose fibers.
Preferably, the mixing ratio of the graphene nylon fiber to the graphene viscose fiber is 50/50.
Preferably, the graphene nylon fiber is prepared by a melt spinning method; the graphene viscose fiber is prepared by a wet spinning method.
Preferably, the graphene viscose fiber comprises the following components in parts by mass:
85-99% of regenerated cellulose pulp treating fluid;
0.1-15% of modified graphene oxide solution;
the ratio of the solid content of cellulose in the regenerated cellulose pulp treating solution to the solid content of modified graphene oxide in the modified graphene oxide solution is 100: 0.01 to 5.
More preferably, the graphene viscose fiber comprises the following components in parts by mass:
95-99% of regenerated cellulose pulp treating fluid;
1-5% of a modified graphene oxide solution;
the ratio of the solid content of cellulose in the regenerated cellulose pulp treating solution to the solid content of modified graphene oxide in the modified graphene oxide solution is 100: 0.1 to 3.
Preferably, the concentration of the modified graphene oxide in the modified graphene oxide solution is 1-10 mg/ml, and more preferably 1-3 mg/ml.
Preferably, the preparation method of the graphene viscose fiber comprises the following steps:
A. preparing a modified graphene oxide solution: dissolving modified graphene oxide powder in deionized water to prepare an aqueous solution, adding a modifier and an alkaline reagent, performing ultrasonic treatment, and treating the solution after ultrasonic treatment by adopting a microcapsule technology.
B. Preparing a regenerated cellulose pulp treating fluid:
mixing the regenerated cellulose pulp with a sodium hydroxide solution, uniformly stirring, and then carrying out squeezing, ageing and yellowing treatment to obtain the regenerated cellulose pulp; the mass ratio of the regenerated cellulose pulp to the sodium hydroxide solution is 1: 2-4; the mass fraction of the sodium hydroxide solution is 20-40%.
C. And C, heating the modified graphene oxide solution prepared in the step A to 25-30 ℃, fully stirring and mixing the modified graphene oxide solution with the regenerated cellulose pulp treatment solution prepared in the step B, heating to 38-40 ℃, treating for 10-15 min (the process is a microcapsule release stage), and then spinning to obtain the graphene viscose fiber.
Preferably, in the step a, the particle size of the modified graphene oxide powder is less than 5 μm, and the particle size of the microcapsule particle obtained after the microcapsule is processed by a microcapsule technology is less than 3 μm. The particle size of the modified graphene oxide powder is not suitable to be too large, otherwise, the graphene is not uniformly dispersed in the regenerated cellulose fiber, and the spinning difficulty is increased.
Preferably, in the step a, the modified graphene oxide is prepared by a Hummers method.
Preferably, in the step a, the modifier is one or more of polyvinyl alcohol, polyethylene glycol, sodium lignosulfonate and polyvinylpyrrolidone; the alkaline reagent is one or more of ammonia water and sodium hydroxide; the addition amount of the modifier and the alkaline agent is 1 percent of the weight of the solution respectively.
Preferably, in the step B, the pressure of the squeezing treatment is 2-4 kpa, and the squeezing time is 30 min; the aging treatment specifically comprises the following steps: the temperature is 20-25 ℃, the treatment is carried out for 5-6 h, then the temperature is raised to 30-35 ℃, and the treatment is carried out for 2-3 h; the yellowing treatment specifically comprises the following steps: the temperature is 20-22 ℃, the treatment time is 30-40 min, then the temperature is increased to 25-30 ℃, and the treatment time is 20-40 min.
Preferably, the preparation method of the graphene nylon fiber comprises the following steps:
s1, mixing the nylon chips with the modified graphene oxide, and performing extrusion granulation to obtain graphene-nylon master batch;
s2, performing melt spinning on the modified graphene oxide-nylon master batch to obtain the graphene-nylon nano composite fiber;
the modified graphene oxide is prepared by freeze drying the modified graphene oxide solution;
in step S1, the mass ratio of the nylon chips to the graphene or the modified graphene is 1: 0.1 to 5 percent.
Preferably, the modified graphene oxide is bromoalkane modified graphene.
Preferably, the modified graphene oxide is prepared by freeze drying the modified graphene oxide solution;
preferably, in step S1, the chinlon chips and the graphene or the modified graphene are respectively dried and then mixed; and drying the nylon chips until the water content is controlled below 60 ppm. More preferably, it is controlled to 30ppm or less.
Preferably, in step S1, the mixing is performed in a batch type in a high speed mixer, the rotation speed is 8000 to 10000rad/min, and the time is 10 to 20 minutes.
Preferably, in step S2, the graphene-nylon masterbatch is dried and then melt-spun.
Preferably, the temperature of the drying treatment of the graphene-chinlon master batch is 80-120 ℃, the time is 6-10 hours, and the water content of the graphene-chinlon master batch after the drying treatment is below 50 ppm.
Preferably, the common fiber layer comprises at least one of cotton fibers and viscose fibers.
Preferably, the common fiber layer is formed by mixing cotton fibers and viscose fibers according to the proportion of 50/50.
The invention also provides a preparation method of the graphene dual-function knitted fabric, which comprises the following steps: and weaving the graphene composite fiber layer and the common fiber layer by a circular knitting machine to obtain the double-layer knitted fabric, namely the graphene dual-function knitted fabric.
Compared with the prior art, the invention has the following beneficial effects:
1. the graphene dual-function knitted fabric developed by the invention is used for playing the higher thermal conductivity and the unique far infrared heating function of the graphene nylon composite fiber on the knitted sportswear fabric by preparing the graphene composite fiber layer by adopting the blended yarn of the graphene nylon fiber and the graphene viscose fiber, so that sportsmen feel comfortable to wear. The graphene bifunctional fabric can be widely used for producing sports clothes and has a very wide application prospect.
2. By adopting the graphene viscose fiber, the modified graphene oxide solution is subjected to ultrasonic treatment and microcapsule technology treatment, so that the dispersibility of the modified graphene oxide is enhanced and the agglomeration phenomenon of the modified graphene oxide is reduced, and finally the modified graphene oxide solution is added into regenerated cellulose pulp according to a certain proportion, and an improved wet spinning process is utilized to prepare the modified graphene oxide regenerated cellulose composite fiber. The graphene viscose fiber also can enable the antibacterial performance of the fabric to be excellent, wherein the bacteriostasis rates of escherichia coli, staphylococcus aureus and candida albicans can reach 99.9%.
3. By adopting the graphene nylon fiber, the breaking strength of the fiber can be greatly improved.
4. The graphene composite fiber dual-functional fabric prepared by the method is simple in process, easy to operate, low in cost, high in economic benefit and suitable for large-scale industrial production.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of the non-limiting embodiments with reference to the following drawings:
fig. 1 is a structural diagram of the dual-function fabric of the present invention.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
The embodiment provides a graphene dual-function knitted fabric, the structure of which is shown in fig. 1, and the fabric can be worn on two sides, and when a graphene composite fiber layer is worn close to skin, heat can be rapidly discharged, so that a heat dissipation effect is achieved; when the common fiber layer is worn close to the skin, far infrared heat generated by the graphene composite fiber layer plays a role in keeping warm. The fabric is particularly suitable for manufacturing sports clothes, the graphene composite fiber layer is worn close to the skin during sports, the graphene composite fiber layer is worn away from the skin after the sports, the body temperature of the skin is quickly adjusted, people can maintain stable temperature during and after the sports, and the occurrence of cold and cold after the sports is reduced.
Example 1
The embodiment provides a bifunctional graphene knitted fabric, which comprises a graphene composite fiber layer and a common fiber layer.
The graphene composite fiber layer is made by weaving blended yarns of graphene nylon fibers and graphene viscose fibers.
The mixing ratio of the graphene nylon fibers to the graphene viscose fibers is 50/50.
The graphene nylon fiber is prepared by a melt spinning method; the graphene viscose fiber is prepared by a wet spinning method.
The graphene viscose fiber comprises the following components in parts by mass:
85% of regenerated cellulose pulp treating fluid;
15% of modified graphene oxide solution;
the ratio of the solid content of cellulose in the regenerated cellulose pulp treating solution to the solid content of modified graphene oxide in the modified graphene oxide solution is 100: 0.1.
the concentration of the modified graphene oxide in the modified graphene oxide solution is 1 mg/ml.
The preparation method of the graphene viscose fiber comprises the following steps:
A. preparing a modified graphene oxide solution: dissolving modified graphene oxide powder in deionized water to prepare an aqueous solution, adding a modifier and an alkaline reagent, performing ultrasonic treatment, and treating the solution after ultrasonic treatment by adopting a microcapsule technology.
B. Preparing a regenerated cellulose pulp treating fluid:
mixing the regenerated cellulose pulp with a sodium hydroxide solution, uniformly stirring, and then carrying out squeezing, ageing and yellowing treatment to obtain the regenerated cellulose pulp; the mass ratio of the regenerated cellulose pulp to the sodium hydroxide solution is 1: 2-4; the mass fraction of the sodium hydroxide solution is 20-40%.
C. And C, heating the modified graphene oxide solution prepared in the step A to 25-30 ℃, fully stirring and mixing the modified graphene oxide solution with the regenerated cellulose pulp treatment solution prepared in the step B, heating to 38-40 ℃, treating for 10-15 min (the process is a microcapsule release stage), and then spinning to obtain the graphene viscose fiber.
In the step A, the particle size of the modified graphene oxide powder is less than 5 microns, and the particle size of the microcapsule particles obtained after the microcapsule technology treatment is less than 3 microns. The particle size of the modified graphene oxide powder is not suitable to be too large, otherwise, the graphene is not uniformly dispersed in the regenerated cellulose fiber, and the spinning difficulty is increased.
In the step A, the modified graphene oxide is prepared by a Hummers method.
In the step A, the modifier is one or more of polyvinyl alcohol, polyethylene glycol, sodium lignosulfonate and polyvinylpyrrolidone; the alkaline reagent is one or more of ammonia water and sodium hydroxide; the addition amount of the modifier and the alkaline reagent is 1 percent of the weight of the solution respectively.
In the step B, the pressure of the squeezing treatment is 2-4 kpa, and the squeezing time is 30 min; the aging treatment specifically comprises the following steps: the temperature is 20-25 ℃, the treatment is carried out for 5-6 h, then the temperature is raised to 30-35 ℃, and the treatment is carried out for 2-3 h; the yellowing treatment is specifically as follows: the temperature is 20-22 ℃, the treatment time is 30-40 min, then the temperature is increased to 25-30 ℃, and the treatment time is 20-40 min.
The preparation method of the graphene nylon fiber comprises the following steps:
s1, mixing the nylon chips with the modified graphene oxide, and performing extrusion granulation to obtain graphene-nylon master batch;
s2, performing melt spinning on the modified graphene oxide-nylon master batch to obtain the graphene-nylon nano composite fiber;
the modified graphene oxide is prepared by freeze drying the modified graphene oxide solution;
in step S1, the mass ratio of the nylon chips to the graphene or the modified graphene is 1: 0.1 percent.
The modified graphene oxide is brominated alkane modified graphene.
The modified graphene oxide is prepared by freeze drying the modified graphene oxide solution;
in step S1, respectively drying the nylon chips and the graphene or the modified graphene, and then mixing; and drying the nylon chips until the water content is controlled below 60 ppm. More preferably, it is controlled to 30ppm or less.
In step S1, the mixing is performed intermittently in a high-speed mixer at a rotation speed of 8000 to 10000rad/min for 10 to 20 minutes.
In step S2, the graphene-nylon masterbatch is dried and then melt-spun.
The temperature of the drying treatment of the graphene-chinlon master batch is 80-120 ℃, the time is 6-10 hours, and the water content of the graphene-chinlon master batch after the drying treatment is below 50 ppm.
The common fiber layer is formed by mixing cotton fibers and viscose fibers according to the proportion of 50/50.
The preparation method of the graphene bifunctional knitted fabric comprises the following steps: and weaving the graphene composite fiber layer and the common fiber layer by a circular knitting machine to obtain the double-layer knitted fabric, namely the graphene dual-function knitted fabric.
Example 2
The embodiment provides a bifunctional graphene knitted fabric, which comprises a graphene composite fiber layer and a common fiber layer.
The graphene composite fiber layer is made by weaving blended yarns of graphene nylon fibers and graphene viscose fibers.
The mixing ratio of the graphene nylon fibers to the graphene viscose fibers is 50/50.
The graphene nylon fiber is prepared by a melt spinning method; the graphene viscose fiber is prepared by a wet spinning method.
The graphene viscose fiber comprises the following components in parts by mass:
90% of regenerated cellulose pulp treating fluid;
10% of modified graphene oxide solution;
the ratio of the solid content of cellulose in the regenerated cellulose pulp treating solution to the solid content of modified graphene oxide in the modified graphene oxide solution is 100: 5.
the concentration of the modified graphene oxide in the modified graphene oxide solution is 10 mg/ml.
The preparation method of the graphene viscose fiber comprises the following steps:
A. preparing a modified graphene oxide solution: dissolving modified graphene oxide powder in deionized water to prepare an aqueous solution, adding a modifier and an alkaline reagent, performing ultrasonic treatment, and treating the solution after ultrasonic treatment by adopting a microcapsule technology.
B. Preparing a regenerated cellulose pulp treating fluid:
mixing the regenerated cellulose pulp with a sodium hydroxide solution, uniformly stirring, and then carrying out squeezing, ageing and yellowing treatment to obtain the regenerated cellulose pulp; the mass ratio of the regenerated cellulose pulp to the sodium hydroxide solution is 1: 2-4; the mass fraction of the sodium hydroxide solution is 20-40%.
C. And C, heating the modified graphene oxide solution prepared in the step A to 25-30 ℃, fully stirring and mixing the modified graphene oxide solution with the regenerated cellulose pulp treatment solution prepared in the step B, heating to 38-40 ℃, treating for 10-15 min (the process is a microcapsule release stage), and then spinning to obtain the graphene viscose fiber.
In the step A, the particle size of the modified graphene oxide powder is less than 5 microns, and the particle size of the microcapsule particles obtained after the microcapsule technology treatment is less than 3 microns. The particle size of the modified graphene oxide powder is not suitable to be too large, otherwise, the graphene is not uniformly dispersed in the regenerated cellulose fiber, and the spinning difficulty is increased.
In the step A, the modified graphene oxide is prepared by a Hummers method.
In the step A, the modifier is one or more of polyvinyl alcohol, polyethylene glycol, sodium lignosulfonate and polyvinylpyrrolidone; the alkaline reagent is one or more of ammonia water and sodium hydroxide; the addition amount of the modifier and the alkaline reagent is 1 percent of the weight of the solution respectively.
In the step B, the pressure of the squeezing treatment is 2-4 kpa, and the squeezing time is 30 min; the aging treatment specifically comprises the following steps: the temperature is 20-25 ℃, the treatment is carried out for 5-6 h, then the temperature is raised to 30-35 ℃, and the treatment is carried out for 2-3 h; the yellowing treatment is specifically as follows: the temperature is 20-22 ℃, the treatment time is 30-40 min, then the temperature is increased to 25-30 ℃, and the treatment time is 20-40 min.
The preparation method of the graphene nylon fiber comprises the following steps:
s1, mixing the nylon chips with the modified graphene oxide, and performing extrusion granulation to obtain graphene-nylon master batch;
s2, performing melt spinning on the modified graphene oxide-nylon master batch to obtain the graphene-nylon nano composite fiber;
the modified graphene oxide is prepared by freeze drying the modified graphene oxide solution;
in step S1, the mass ratio of the nylon chips to the graphene or the modified graphene is 1: 3 percent.
The modified graphene oxide is brominated alkane modified graphene.
The modified graphene oxide is prepared by freeze drying the modified graphene oxide solution;
in step S1, respectively drying the nylon chips and the graphene or the modified graphene, and then mixing; and drying the nylon chips until the water content is controlled below 60 ppm. More preferably, it is controlled to 30ppm or less.
In step S1, the mixing is performed intermittently in a high-speed mixer at a rotation speed of 8000 to 10000rad/min for 10 to 20 minutes.
In step S2, the graphene-nylon masterbatch is dried and then melt-spun.
The temperature of the drying treatment of the graphene-chinlon master batch is 80-120 ℃, the time is 6-10 hours, and the water content of the graphene-chinlon master batch after the drying treatment is below 50 ppm.
The common fiber layer is formed by mixing cotton fibers and viscose fibers according to the proportion of 50/50.
The preparation method of the graphene bifunctional knitted fabric comprises the following steps: and weaving the graphene composite fiber layer and the common fiber layer by a circular knitting machine to obtain the double-layer knitted fabric, namely the graphene dual-function knitted fabric.
Example 3
The embodiment provides a bifunctional graphene knitted fabric, which comprises a graphene composite fiber layer and a common fiber layer.
The graphene composite fiber layer is made by weaving blended yarns of graphene nylon fibers and graphene viscose fibers.
The mixing ratio of the graphene nylon fibers to the graphene viscose fibers is 50/50.
The graphene nylon fiber is prepared by a melt spinning method; the graphene viscose fiber is prepared by a wet spinning method.
The graphene viscose fiber comprises the following components in parts by mass:
99% of regenerated cellulose pulp treating fluid;
1% of modified graphene oxide solution;
the ratio of the solid content of cellulose in the regenerated cellulose pulp treating solution to the solid content of modified graphene oxide in the modified graphene oxide solution is 100: 3.
the concentration of the modified graphene oxide in the modified graphene oxide solution is 3 mg/ml.
The preparation method of the graphene viscose fiber comprises the following steps:
A. preparing a modified graphene oxide solution: dissolving modified graphene oxide powder in deionized water to prepare an aqueous solution, adding a modifier and an alkaline reagent, performing ultrasonic treatment, and treating the solution after ultrasonic treatment by adopting a microcapsule technology.
B. Preparing a regenerated cellulose pulp treating fluid:
mixing the regenerated cellulose pulp with a sodium hydroxide solution, uniformly stirring, and then carrying out squeezing, ageing and yellowing treatment to obtain the regenerated cellulose pulp; the mass ratio of the regenerated cellulose pulp to the sodium hydroxide solution is 1: 2-4; the mass fraction of the sodium hydroxide solution is 20-40%.
C. And C, heating the modified graphene oxide solution prepared in the step A to 25-30 ℃, fully stirring and mixing the modified graphene oxide solution with the regenerated cellulose pulp treatment solution prepared in the step B, heating to 38-40 ℃, treating for 10-15 min (the process is a microcapsule release stage), and then spinning to obtain the graphene viscose fiber.
In the step A, the particle size of the modified graphene oxide powder is less than 5 microns, and the particle size of the microcapsule particles obtained after the microcapsule technology treatment is less than 3 microns. The particle size of the modified graphene oxide powder is not suitable to be too large, otherwise, the graphene is not uniformly dispersed in the regenerated cellulose fiber, and the spinning difficulty is increased.
In the step A, the modified graphene oxide is prepared by a Hummers method.
In the step A, the modifier is one or more of polyvinyl alcohol, polyethylene glycol, sodium lignosulfonate and polyvinylpyrrolidone; the alkaline reagent is one or more of ammonia water and sodium hydroxide; the addition amount of the modifier and the alkaline reagent is 1 percent of the weight of the solution respectively.
In the step B, the pressure of the squeezing treatment is 2-4 kpa, and the squeezing time is 30 min; the aging treatment specifically comprises the following steps: the temperature is 20-25 ℃, the treatment is carried out for 5-6 h, then the temperature is raised to 30-35 ℃, and the treatment is carried out for 2-3 h; the yellowing treatment is specifically as follows: the temperature is 20-22 ℃, the treatment time is 30-40 min, then the temperature is increased to 25-30 ℃, and the treatment time is 20-40 min.
The preparation method of the graphene nylon fiber comprises the following steps:
s1, mixing the nylon chips with the modified graphene oxide, and performing extrusion granulation to obtain graphene-nylon master batch;
s2, performing melt spinning on the modified graphene oxide-nylon master batch to obtain the graphene-nylon nano composite fiber;
the modified graphene oxide is prepared by freeze drying the modified graphene oxide solution;
in step S1, the mass ratio of the nylon chips to the graphene or the modified graphene is 1: 5 percent.
The modified graphene oxide is brominated alkane modified graphene.
The modified graphene oxide is prepared by freeze drying the modified graphene oxide solution;
in step S1, respectively drying the nylon chips and the graphene or the modified graphene, and then mixing; and drying the nylon chips until the water content is controlled below 60 ppm. More preferably, it is controlled to 30ppm or less.
In step S1, the mixing is performed intermittently in a high-speed mixer at a rotation speed of 8000 to 10000rad/min for 10 to 20 minutes.
In step S2, the graphene-nylon masterbatch is dried and then melt-spun.
The temperature of the drying treatment of the graphene-chinlon master batch is 80-120 ℃, the time is 6-10 hours, and the water content of the graphene-chinlon master batch after the drying treatment is below 50 ppm.
The common fiber layer is formed by mixing cotton fibers and viscose fibers according to the proportion of 50/50.
The preparation method of the graphene bifunctional knitted fabric comprises the following steps: and weaving the graphene composite fiber layer and the common fiber layer by a circular knitting machine to obtain the double-layer knitted fabric, namely the graphene dual-function knitted fabric.
Comparative example 1
The comparative example provides a graphene bifunctional knitted fabric, the composition and the preparation method of which are basically the same as those of example 3, and the difference is only that: in the comparative example, the mixing ratio of the graphene nylon fiber to the graphene viscose fiber is 100/0, that is, the graphene viscose fiber is not contained.
Comparative example 2
The comparative example provides a graphene bifunctional knitted fabric, the composition and the preparation method of which are basically the same as those of example 3, and the difference is only that: in the comparative example, the mixing ratio of the graphene nylon fiber to the graphene viscose fiber is 0/100, that is, the graphene nylon fiber is not contained.
Comparative example 3
The comparative example provides a graphene bifunctional knitted fabric, the composition and the preparation method of which are basically the same as those of example 3, and the difference is only that: in the preparation method of the graphene viscose fiber described in the present comparative example, step a is not processed by the microcapsule technology.
Comparative example 4
The comparative example provides a graphene bifunctional knitted fabric, the composition and the preparation method of which are basically the same as those of example 3, and the difference is only that: in the preparation method of the graphene viscose fiber in the comparative example, the modified graphene oxide powder adopted in the step a is prepared by a Brodie method.
Comparative example 5
The comparative example provides a graphene bifunctional knitted fabric, the composition and the preparation method of which are basically the same as those of example 3, and the difference is only that: in the preparation method of the graphene viscose fiber in the comparative example, in the step C, the modified graphene oxide solution and the regenerated cellulose pulp treatment solution are fully mixed, and after stirring by a stirrer, the temperature is raised to 30-32 ℃ for treatment for 20-25 min.
Comparative example 6
The comparative example provides a graphene bifunctional knitted fabric, the composition and the preparation method of which are basically the same as those of example 3, and the difference is only that: in the preparation of the graphene nylon fiber in the comparative example, the modified graphene oxide is amino compound modified graphene.
Effect verification:
the graphene bifunctional knitted fabric prepared in the above embodiment and comparative example is subjected to performance test, and the results are shown in table 1.
TABLE 1
The invention has many applications, and the above description is only a preferred embodiment of the invention. It should be noted that the above examples are only for illustrating the present invention, and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications can be made without departing from the principles of the invention and these modifications are to be considered within the scope of the invention.
Claims (7)
1. The graphene dual-function knitted fabric is characterized by comprising a graphene composite fiber layer and a common fiber layer;
the graphene composite fiber layer is prepared by weaving blended yarns of graphene nylon fibers and graphene viscose fibers;
the graphene viscose fiber comprises the following components in parts by mass:
85-99% of regenerated cellulose pulp treating fluid;
0.1-15% of modified graphene oxide solution;
the ratio of the solid content of cellulose in the regenerated cellulose pulp treating solution to the solid content of modified graphene oxide in the modified graphene oxide solution is 100: 0.01 to 5;
the preparation method of the graphene viscose fiber comprises the following steps:
A. preparing a modified graphene oxide solution: dissolving modified graphene oxide powder in deionized water to prepare an aqueous solution, adding a modifier and an alkaline reagent, performing ultrasonic treatment, and treating the solution subjected to ultrasonic treatment by adopting a microcapsule technology;
B. preparing a regenerated cellulose pulp treating fluid:
mixing the regenerated cellulose pulp with a sodium hydroxide solution, uniformly stirring, and then carrying out squeezing, ageing and yellowing treatment to obtain the regenerated cellulose pulp; the mass ratio of the regenerated cellulose pulp to the sodium hydroxide solution is 1: 2-4; the mass fraction of the sodium hydroxide solution is 20-40%;
C. heating the modified graphene oxide solution prepared in the step A to 25-30 ℃, fully stirring and mixing the modified graphene oxide solution with the regenerated cellulose pulp treatment solution prepared in the step B, heating the modified graphene oxide solution to 38-40 ℃, treating for 10-15 min, and then spinning to obtain the graphene viscose fiber;
in the step A, the modified graphene oxide is prepared by a Hummers method; the particle size of the modified graphene oxide powder is less than 5 microns, and the particle size of microcapsule particles obtained after microcapsule technology treatment is less than 3 microns.
2. The graphene bi-functional knitted fabric according to claim 1, wherein the graphene nylon fibers and the graphene viscose fibers are mixed in a ratio of 50/50.
3. The graphene bifunctional knitted fabric according to claim 1 or 2, wherein the graphene nylon fibers are prepared by a melt spinning method; the graphene viscose fiber is prepared by a wet spinning method.
4. The graphene bi-functional knitted fabric according to claim 3, wherein the preparation method of the graphene nylon fiber comprises the following steps:
s1, mixing the nylon chips with the modified graphene oxide, and performing extrusion granulation to obtain modified graphene oxide-nylon master batch;
s2, carrying out melt spinning on the modified graphene oxide-nylon master batch to obtain the graphene nylon fiber;
the modified graphene oxide is prepared by freeze drying the modified graphene oxide solution;
in step S1, the mass ratio of the nylon chips to the modified graphene is 1: 0.1 to 5 percent.
5. The graphene bi-functional knitted fabric according to claim 1, wherein the common fiber layer includes at least one of cotton fibers and viscose fibers.
6. The graphene bi-functional knitted fabric according to claim 1 or 5, wherein the common fiber layer is formed by mixing cotton fibers and viscose fibers according to 50/50 ratio.
7. A preparation method of the graphene bi-functional knitted fabric according to any one of claims 1 to 6, comprising the following steps: and weaving the graphene composite fiber layer and the common fiber layer by a circular knitting machine to obtain the double-layer knitted fabric, namely the graphene dual-function knitted fabric.
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| CN110774672A (en) * | 2019-10-16 | 2020-02-11 | 常州市林克制衣有限公司 | Fabric containing graphene and application and processing technology thereof |
| CN112725999B (en) * | 2020-12-02 | 2022-12-27 | 深圳市烯世传奇科技有限公司 | Composite graphene modified fabric and preparation method thereof, finger stall and glove |
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