CN113737312A - Graphene high-filterability fiber and preparation method thereof - Google Patents
Graphene high-filterability fiber and preparation method thereof Download PDFInfo
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- CN113737312A CN113737312A CN202110975740.7A CN202110975740A CN113737312A CN 113737312 A CN113737312 A CN 113737312A CN 202110975740 A CN202110975740 A CN 202110975740A CN 113737312 A CN113737312 A CN 113737312A
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 106
- 239000000835 fiber Substances 0.000 title claims abstract description 95
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 74
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000000203 mixture Substances 0.000 claims abstract description 80
- 238000003756 stirring Methods 0.000 claims abstract description 70
- 239000000463 material Substances 0.000 claims abstract description 53
- 229920000728 polyester Polymers 0.000 claims abstract description 47
- 239000000843 powder Substances 0.000 claims abstract description 39
- 238000010438 heat treatment Methods 0.000 claims abstract description 37
- 239000002562 thickening agent Substances 0.000 claims abstract description 37
- 239000002270 dispersing agent Substances 0.000 claims abstract description 34
- 239000003456 ion exchange resin Substances 0.000 claims abstract description 29
- 229920003303 ion-exchange polymer Polymers 0.000 claims abstract description 29
- 239000002994 raw material Substances 0.000 claims abstract description 28
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 26
- 239000004917 carbon fiber Substances 0.000 claims abstract description 26
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 26
- 238000009987 spinning Methods 0.000 claims abstract description 26
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 238000001914 filtration Methods 0.000 claims abstract description 24
- 238000001179 sorption measurement Methods 0.000 claims abstract description 18
- 230000000694 effects Effects 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 238000001125 extrusion Methods 0.000 claims description 33
- 238000012360 testing method Methods 0.000 claims description 8
- 239000004698 Polyethylene Substances 0.000 claims description 7
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 7
- -1 polyethylene Polymers 0.000 claims description 7
- 229920000573 polyethylene Polymers 0.000 claims description 7
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 6
- 235000013162 Cocos nucifera Nutrition 0.000 claims description 6
- 244000060011 Cocos nucifera Species 0.000 claims description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 6
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 6
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 6
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 6
- 239000003245 coal Substances 0.000 claims description 6
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 6
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 6
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 6
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 6
- 235000019422 polyvinyl alcohol Nutrition 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 3
- 238000002844 melting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000005038 ethylene vinyl acetate Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000002086 nanomaterial Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000010903 husk Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 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
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/02—Loose filtering material, e.g. loose fibres
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Artificial Filaments (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses a graphene high-filterability fiber and a preparation method thereof, wherein the method comprises the following steps: step 1, preparing raw materials; step 2, heating the polyester slices, completely melting, and then keeping the temperature and stirring; step 3, adding carbon fiber powder and a dispersing agent into the polyester melt, stirring to obtain a mixture A, and slowly cooling; step 4, heating and stirring the adsorption material, the ion exchange resin and the graphene to obtain a mixture B; step 5, mixing the mixture A and the mixture B, heating and keeping the temperature, adding a thickening agent, and adjusting the viscosity; step 6, pouring the mixture into a spinning machine for spinning; and 7, stretching, elasticizing and twisting the fiber filament to obtain the functional fiber filament. The invention also provides the graphene high-filterability fiber prepared by the method. According to the invention, the raw materials such as graphene are added into the fiber, and the filtering effect and the mechanical property of the fiber can be improved through process treatment, so that the fiber meets the requirement of repeated high-filtering.
Description
Technical Field
The invention relates to a chemical corrosion resistant graphene composite fiber and a preparation method thereof, and particularly relates to a graphene high-filterability fiber and a preparation method thereof.
Background
Graphene (Graphene) is a polymer made of carbon atoms in sp2The two-dimensional carbon nanomaterial with honeycomb crystal lattices in a hexagonal shape formed by the hybrid tracks has high mechanical property and large specific surface area, and the material with adsorption and filtration properties can be prepared by combining graphene with other materials, so that the two-dimensional carbon nanomaterial has important significance for water quality treatment.
The high-efficiency fiber bundle filter is a pressure type fiber filter device with advanced structure and excellent performance, and is a novel energy-saving water purifier which is developed through years of practice according to the fluid mechanics principle. The high-efficiency fiber filter has good application in industry, can ensure the quality of circulating water, and has the core of a fiber bundle with filtering property.
The high-efficiency fiber bundle filter adopts a novel bundle-shaped soft filler-fiber as a filter element, the diameter of a filter material of the high-efficiency fiber bundle filter can reach dozens of microns or even several microns, and the high-efficiency fiber bundle filter has the advantages of large specific surface area, small filtering resistance and the like, and solves the problems that the filtering precision of granular filter materials is limited by the particle size of the filter materials and the like.
In the water filtering process, the small diameter of the filter material greatly increases the specific surface area and the surface free energy of the filter material, increases the contact chance of impurity particles in water and the filter material and the adsorption capacity of the filter material, and thus improves the filtering efficiency and the sewage interception capacity.
In order to fully exert the characteristics of the fiber bundle filter material, the lower end of the filter layer of the filter is provided with a movable orifice plate adjusting device capable of changing the fiber density. When the equipment is operated, water passes through the filter layer from bottom to top. At this time, the movable orifice plate adjusting device moves upward. After the fibers are pressurized, the density of the filter layer along the water flowing direction is gradually increased, the diameter and the pores of the corresponding filter layer are gradually reduced, and the deep filtration is realized. When the filter layer is polluted and needs to be cleaned and regenerated, the cleaning water passes through the filter layer from top to bottom. At this time, the movable orifice plate adjusting device automatically descends to pull the fibers open and to be in a relaxed state, and then the fibers can be conveniently cleaned.
The fiber bundle filter can effectively remove suspended matters in water, has an obvious removing effect on bacteria, viruses, macromolecular organic matters, colloid, iron, manganese and the like in water, and has the advantages of high filtering speed, high precision, large sewage interception capacity, convenience in operation, reliability in operation, no need of special maintenance and the like.
Disclosure of Invention
The invention aims to provide a chemical corrosion resistant graphene composite fiber and a preparation method thereof.
In order to achieve the above object, the present invention provides a method for preparing a graphene high-filterability fiber, wherein the method comprises: step 1, preparing raw materials in proportion; the raw materials comprise polyester slices, a thickening agent, an adsorption material, ion exchange resin, graphene, a dispersing agent and carbon fiber powder; step 2, adding the polyester chips into a No. 1 stirring kettle, setting the reaction temperature for heating, and keeping the temperature for stirring after the polyester chips are completely melted; step 3, sequentially adding carbon fiber powder and a dispersing agent into the polyester melt, uniformly stirring to obtain a mixture A, and slowly cooling; step 4, heating and stirring the adsorbing material, the ion exchange resin and the graphene in a No. 2 stirring kettle until the adsorbing material, the ion exchange resin and the graphene are uniformly stirred to obtain a mixture B; step 5, mixing the mixture A and the mixture B, heating and keeping the temperature, adding a thickening agent at the same time, and adjusting the viscosity of the mixture; step 6, pouring the mixture with the viscosity adjusted in the step 5 into a spinning machine for spinning, and controlling the extrusion temperature and the extrusion rate to obtain fiber filaments with high filtering effect; and 7, stretching, elasticizing and twisting the fiber filaments obtained in the step 6 to obtain the functional fiber filaments.
The preparation method of the graphene high-filterability fiber comprises the following steps of (1) mixing the raw materials in parts by weight: 30-40 parts of polyester chips, 10-20 parts of thickening agent, 18-30 parts of adsorbing material, 10-15 parts of ion exchange resin, 15-25 parts of graphene, 3-8 parts of dispersing agent and 3-8 parts of carbon fiber powder.
The preparation method of the graphene high-filterability fiber comprises the following steps of (1) preparing a thickening agent, wherein the thickening agent comprises any one or more of polyvinyl alcohol, carboxymethyl cellulose and polyvinylpyrrolidone; the adsorption material comprises any one or more of coal activated carbon powder, coconut shell activated carbon and shell activated carbon; the dispersing agent contains polyethylene wax powder and/or EVA powder.
In the step 2, the reaction temperature is 270-320 ℃, the heating time is 1-3 hours, and after the polyester chips are completely melted, the heat is preserved and the mixture is stirred.
In the preparation method of the graphene high-filterability fiber, in the step 3, the stirring speed is 150-250 r/min, the mixture A is obtained after uniform stirring, and the temperature is slowly reduced to 150-180 ℃.
In the step 4, the graphene high-filterability fibers are heated and stirred at 120-180 ℃, the stirring speed is 1800-300 r/min, and a mixture B is obtained after the mixture is uniformly stirred.
In the step 5, the mixture a and the mixture B are mixed, heated and kept at the temperature of 100-.
In the preparation method of the graphene high-filterability fiber, the viscosity of the mixture is adjusted, and the viscosity is controlled within the range of 100-1000cP through multiple tests by a viscosity tester.
In the step 6, the extrusion temperature of the spinning machine is 120-160 ℃, and the extrusion rate is 0.2-2 g/min.
The invention also provides the graphene high-filterability fiber prepared by the method.
The graphene high-filterability fiber and the preparation method thereof provided by the invention have the following advantages:
firstly, the fiber has high elasticity and good mechanical property, and can still meet the filtering requirement after repeated extrusion.
Secondly, the fiber has excellent performance, wear resistance, corrosion resistance and long service life.
And thirdly, due to the addition of graphene in the fiber, the specific surface area and the surface free energy of the filter material are greatly increased, and the filtering efficiency and the pollutant interception capacity are improved.
And fourthly, the filter prepared by the fiber bundle has the characteristics of convenient operation, reliable operation, no need of special maintenance and the like.
Detailed Description
The following further describes embodiments of the present invention.
The invention provides a preparation method of graphene high-filterability fibers, which comprises the following steps:
step 1, preparing raw materials in proportion; the raw materials comprise polyester slices, a thickening agent, an adsorption material, ion exchange resin, graphene, a dispersing agent and carbon fiber powder; step 2, adding the polyester chips into a No. 1 stirring kettle, setting the reaction temperature for heating, and keeping the temperature for stirring after the polyester chips are completely melted; step 3, sequentially adding carbon fiber powder and a dispersing agent into the polyester melt, uniformly stirring to obtain a mixture A, and slowly cooling; step 4, heating and stirring the adsorbing material, the ion exchange resin and the graphene in a No. 2 stirring kettle until the adsorbing material, the ion exchange resin and the graphene are uniformly stirred to obtain a mixture B; step 5, mixing the mixture A and the mixture B, heating and keeping the temperature, adding a thickening agent at the same time, and adjusting the viscosity of the mixture; step 6, pouring the mixture with the viscosity adjusted in the step 5 into a spinning machine for spinning, and controlling the extrusion temperature and the extrusion rate to obtain fiber filaments with high filtering effect; and 7, carrying out drawing, elasticizing, twisting and other processing on the fiber filament obtained in the step 6, and changing the fiber structure to obtain the functional fiber filament.
And cutting the prepared fiber filaments into fiber bundles according to professional requirements, and filling the fiber bundles into a fiber filtering device to prepare the filter with high filtering effect.
Preferably, the raw materials in the step 1 comprise, by weight: 30-40 parts of polyester chips, 10-20 parts of thickening agent, 18-30 parts of adsorbing material, 10-15 parts of ion exchange resin, 15-25 parts of graphene, 3-8 parts of dispersing agent and 3-8 parts of carbon fiber powder.
The thickening agent comprises any one or more of polyvinyl alcohol, carboxymethyl cellulose and polyvinylpyrrolidone; the adsorption material comprises any one or more of coal activated carbon powder, coconut shell activated carbon and shell activated carbon; the dispersing agent contains polyethylene wax powder and/or EVA (ethylene-vinyl acetate copolymer) powder.
In the step 2, the reaction temperature is set to be 270-320 ℃, the heating time is 1-3 hours, and after the polyester chips are completely melted, the heat is preserved and the polyester chips are stirred.
In step 3, the stirring speed is 150-250 r/min, the mixture A is obtained after uniform stirring, and the temperature is slowly reduced to 150-180 ℃.
And 4, heating and stirring at 120-180 ℃, wherein the stirring speed is 1800-300 r/min, and uniformly stirring to obtain a mixture B.
In step 5, the mixture A and the mixture B are mixed, heated and kept at the temperature of 100 ℃ and 150 ℃, and simultaneously added with a thickening agent to adjust the viscosity of the mixture.
Adjusting the viscosity of the mixture, and repeatedly testing the mixture by a viscosity tester for multiple times, wherein the viscosity range is controlled to be 100-1000 cP.
In step 6, the extrusion temperature of the spinning machine is 120-160 ℃, and the extrusion rate is 0.2-2 g/min.
The equipment used in the present invention is known to those skilled in the art.
The invention also provides the graphene high-filterability fiber prepared by the method.
The graphene high-filterability fiber and the preparation method thereof provided by the invention are further described below with reference to the examples.
Example 1
A method of preparing a graphene high-filterability fiber, comprising:
step 1, preparing raw materials in proportion; the raw materials comprise polyester slices, a thickening agent, an adsorption material, ion exchange resin, graphene, a dispersing agent and carbon fiber powder.
Preferably, the raw materials comprise the following components in parts by weight: 30 parts of polyester chips, 10 parts of thickening agent, 18 parts of adsorbing material, 10 parts of ion exchange resin, 15 parts of graphene, 3 parts of dispersing agent and 3 parts of carbon fiber powder.
The thickener comprises polyvinyl alcohol; the adsorbing material comprises coal activated carbon powder; the dispersing agent comprises polyethylene wax powder and polyethylene wax.
And 2, adding the polyester chips into a No. 1 stirring kettle, setting the reaction temperature to be 270-320 ℃, heating for 1-3 h, and preserving heat and stirring after the polyester chips are completely melted.
And 3, sequentially adding carbon fiber powder and a dispersing agent into the polyester melt, stirring at the stirring speed of 150-250 r/min until the mixture is uniformly stirred to obtain a mixture A, and slowly cooling to 150-180 ℃.
And 4, heating and stirring the adsorbing material, the ion exchange resin and the graphene in a No. 2 stirring kettle at 120-180 ℃, and heating and stirring at a stirring speed of 1800-300 r/min until the materials are uniformly stirred to obtain a mixture B.
And 5, mixing the mixture A and the mixture B, heating and keeping the temperature at 100-150 ℃, simultaneously adding a thickening agent, adjusting the viscosity of the mixture, and performing multiple tests by using a viscosity tester to control the viscosity range at 100-1000 cP.
And 6, pouring the mixture with the viscosity adjusted in the step 5 into a spinning machine for spinning, and controlling the extrusion temperature and the extrusion rate to obtain the fiber filament with high filtering effect.
The extrusion temperature of the spinning machine is 120-160 ℃, and the extrusion speed is 0.2-2 g/min.
And 7, stretching, elasticizing and twisting the fiber filaments obtained in the step 6 to obtain the functional fiber filaments.
The embodiment also provides the graphene high-filterability fiber prepared by the method.
Example 2
A method of preparing a graphene high-filterability fiber, comprising:
step 1, preparing raw materials in proportion; the raw materials comprise polyester slices, a thickening agent, an adsorption material, ion exchange resin, graphene, a dispersing agent and carbon fiber powder.
Preferably, the raw materials comprise the following components in parts by weight: 32 parts of polyester chips, 12 parts of thickening agents, 20 parts of adsorbing materials, 12 parts of ion exchange resins, 18 parts of graphene, 4 parts of dispersing agents and 4 parts of carbon fiber powder.
The thickener comprises carboxymethyl cellulose; the adsorption material comprises coconut shell activated carbon; the dispersing agent comprises polyethylene wax powder.
And 2, adding the polyester chips into a No. 1 stirring kettle, setting the reaction temperature to be 270-320 ℃, heating for 1-3 h, and preserving heat and stirring after the polyester chips are completely melted.
And 3, sequentially adding carbon fiber powder and a dispersing agent into the polyester melt, stirring at the stirring speed of 150-250 r/min until the mixture is uniformly stirred to obtain a mixture A, and slowly cooling to 150-180 ℃.
And 4, heating and stirring the adsorbing material, the ion exchange resin and the graphene in a No. 2 stirring kettle at 120-180 ℃, and heating and stirring at a stirring speed of 1800-300 r/min until the materials are uniformly stirred to obtain a mixture B.
And 5, mixing the mixture A and the mixture B, heating and keeping the temperature at 100-150 ℃, simultaneously adding a thickening agent, adjusting the viscosity of the mixture, and performing multiple tests by using a viscosity tester to control the viscosity range at 100-1000 cP.
And 6, pouring the mixture with the viscosity adjusted in the step 5 into a spinning machine for spinning, and controlling the extrusion temperature and the extrusion rate to obtain the fiber filament with high filtering effect.
The extrusion temperature of the spinning machine is 120-160 ℃, and the extrusion speed is 0.2-2 g/min.
And 7, stretching, elasticizing and twisting the fiber filaments obtained in the step 6 to obtain the functional fiber filaments.
The embodiment also provides the graphene high-filterability fiber prepared by the method.
Example 3
A method of preparing a graphene high-filterability fiber, comprising:
step 1, preparing raw materials in proportion; the raw materials comprise polyester slices, a thickening agent, an adsorption material, ion exchange resin, graphene, a dispersing agent and carbon fiber powder.
Preferably, the raw materials comprise the following components in parts by weight: 35 parts of polyester chips, 15 parts of thickening agents, 24 parts of adsorbing materials, 13 parts of ion exchange resins, 20 parts of graphene, 5 parts of dispersing agents and 6 parts of carbon fiber powder.
The thickener comprises polyvinylpyrrolidone; the adsorption material comprises husk activated carbon; the dispersing agent comprises polyethylene wax powder and EVA powder.
And 2, adding the polyester chips into a No. 1 stirring kettle, setting the reaction temperature to be 270-320 ℃, heating for 1-3 h, and preserving heat and stirring after the polyester chips are completely melted.
And 3, sequentially adding carbon fiber powder and a dispersing agent into the polyester melt, stirring at the stirring speed of 150-250 r/min until the mixture is uniformly stirred to obtain a mixture A, and slowly cooling to 150-180 ℃.
And 4, heating and stirring the adsorbing material, the ion exchange resin and the graphene in a No. 2 stirring kettle at 120-180 ℃, and heating and stirring at a stirring speed of 1800-300 r/min until the materials are uniformly stirred to obtain a mixture B.
And 5, mixing the mixture A and the mixture B, heating and keeping the temperature at 100-150 ℃, simultaneously adding a thickening agent, adjusting the viscosity of the mixture, and performing multiple tests by using a viscosity tester to control the viscosity range at 100-1000 cP.
And 6, pouring the mixture with the viscosity adjusted in the step 5 into a spinning machine for spinning, and controlling the extrusion temperature and the extrusion rate to obtain the fiber filament with high filtering effect.
The extrusion temperature of the spinning machine is 120-160 ℃, and the extrusion speed is 0.2-2 g/min.
And 7, stretching, elasticizing and twisting the fiber filaments obtained in the step 6 to obtain the functional fiber filaments.
The embodiment also provides the graphene high-filterability fiber prepared by the method.
Example 4
A method of preparing a graphene high-filterability fiber, comprising:
step 1, preparing raw materials in proportion; the raw materials comprise polyester slices, a thickening agent, an adsorption material, ion exchange resin, graphene, a dispersing agent and carbon fiber powder.
Preferably, the raw materials comprise the following components in parts by weight: 38 parts of polyester chips, 16 parts of thickening agents, 28 parts of adsorbing materials, 14 parts of ion exchange resins, 22 parts of graphene, 6 parts of dispersing agents and 7 parts of carbon fiber powder.
The thickener comprises any one of polyvinyl alcohol, carboxymethyl cellulose and polyvinylpyrrolidone; the adsorption material comprises any one of coal activated carbon powder, coconut shell activated carbon and shell activated carbon; the dispersing agent contains EVA powder.
And 2, adding the polyester chips into a No. 1 stirring kettle, setting the reaction temperature to be 270-320 ℃, heating for 1-3 h, and preserving heat and stirring after the polyester chips are completely melted.
And 3, sequentially adding carbon fiber powder and a dispersing agent into the polyester melt, stirring at the stirring speed of 150-250 r/min until the mixture is uniformly stirred to obtain a mixture A, and slowly cooling to 150-180 ℃.
And 4, heating and stirring the adsorbing material, the ion exchange resin and the graphene in a No. 2 stirring kettle at 120-180 ℃, and heating and stirring at a stirring speed of 1800-300 r/min until the materials are uniformly stirred to obtain a mixture B.
And 5, mixing the mixture A and the mixture B, heating and keeping the temperature at 100-150 ℃, simultaneously adding a thickening agent, adjusting the viscosity of the mixture, and performing multiple tests by using a viscosity tester to control the viscosity range at 100-1000 cP.
And 6, pouring the mixture with the viscosity adjusted in the step 5 into a spinning machine for spinning, and controlling the extrusion temperature and the extrusion rate to obtain the fiber filament with high filtering effect.
The extrusion temperature of the spinning machine is 120-160 ℃, and the extrusion speed is 0.2-2 g/min.
And 7, stretching, elasticizing and twisting the fiber filaments obtained in the step 6 to obtain the functional fiber filaments.
The embodiment also provides the graphene high-filterability fiber prepared by the method.
Example 5
A method of preparing a graphene high-filterability fiber, comprising:
step 1, preparing raw materials in proportion; the raw materials comprise polyester slices, a thickening agent, an adsorption material, ion exchange resin, graphene, a dispersing agent and carbon fiber powder.
Preferably, the raw materials comprise the following components in parts by weight: 40 parts of polyester chips, 20 parts of thickening agents, 30 parts of adsorbing materials, 15 parts of ion exchange resins, 25 parts of graphene, 8 parts of dispersing agents and 8 parts of carbon fiber powder.
The thickener comprises any of polyvinyl alcohol, carboxymethyl cellulose and polyvinylpyrrolidone; the adsorbing material comprises any of coal activated carbon powder, coconut shell activated carbon and shell activated carbon; the dispersing agent contains EVA powder.
And 2, adding the polyester chips into a No. 1 stirring kettle, setting the reaction temperature to be 270-320 ℃, heating for 1-3 h, and preserving heat and stirring after the polyester chips are completely melted.
And 3, sequentially adding carbon fiber powder and a dispersing agent into the polyester melt, stirring at the stirring speed of 150-250 r/min until the mixture is uniformly stirred to obtain a mixture A, and slowly cooling to 150-180 ℃.
And 4, heating and stirring the adsorbing material, the ion exchange resin and the graphene in a No. 2 stirring kettle at 120-180 ℃, and heating and stirring at a stirring speed of 1800-300 r/min until the materials are uniformly stirred to obtain a mixture B.
And 5, mixing the mixture A and the mixture B, heating and keeping the temperature at 100-150 ℃, simultaneously adding a thickening agent, adjusting the viscosity of the mixture, and performing multiple tests by using a viscosity tester to control the viscosity range at 100-1000 cP.
And 6, pouring the mixture with the viscosity adjusted in the step 5 into a spinning machine for spinning, and controlling the extrusion temperature and the extrusion rate to obtain the fiber filament with high filtering effect.
The extrusion temperature of the spinning machine is 120-160 ℃, and the extrusion speed is 0.2-2 g/min.
And 7, stretching, elasticizing and twisting the fiber filaments obtained in the step 6 to obtain the functional fiber filaments.
The embodiment also provides the graphene high-filterability fiber prepared by the method.
The invention provides a graphene high-filterability fiber and a preparation method thereof, and the material mainly comprises: polyester fiber raw materials, graphene, ion exchange resin powder, adsorption resin, carbon fiber powder, a thickening agent, a dispersing agent and the like. According to the invention, the raw materials such as graphene are added into the fiber, and the filtering effect and the mechanical property of the fiber can be improved through process treatment, so that the fiber meets the requirement of repeated high-filtering. And the preparation method is simple, low in cost, high in economic benefit and suitable for large-scale industrial production.
While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be determined from the following claims.
Claims (10)
1. A preparation method of graphene high-filterability fibers is characterized by comprising the following steps:
step 1, preparing raw materials in proportion; the raw materials comprise polyester slices, a thickening agent, an adsorption material, ion exchange resin, graphene, a dispersing agent and carbon fiber powder;
step 2, adding the polyester chips into a No. 1 stirring kettle, setting the reaction temperature for heating, and keeping the temperature for stirring after the polyester chips are completely melted;
step 3, sequentially adding carbon fiber powder and a dispersing agent into the polyester melt, uniformly stirring to obtain a mixture A, and slowly cooling;
step 4, heating and stirring the adsorbing material, the ion exchange resin and the graphene in a No. 2 stirring kettle until the adsorbing material, the ion exchange resin and the graphene are uniformly stirred to obtain a mixture B;
step 5, mixing the mixture A and the mixture B, heating and keeping the temperature, adding a thickening agent at the same time, and adjusting the viscosity of the mixture;
step 6, pouring the mixture with the viscosity adjusted in the step 5 into a spinning machine for spinning, and controlling the extrusion temperature and the extrusion rate to obtain fiber filaments with high filtering effect;
and 7, stretching, elasticizing and twisting the fiber filaments obtained in the step 6 to obtain the functional fiber filaments.
2. The method for preparing the graphene high-filterability fiber according to claim 1, wherein in the step 1, the raw materials comprise, by weight: 30-40 parts of polyester chips, 10-20 parts of thickening agent, 18-30 parts of adsorbing material, 10-15 parts of ion exchange resin, 15-25 parts of graphene, 3-8 parts of dispersing agent and 3-8 parts of carbon fiber powder.
3. The method for preparing the graphene high-filterability fiber according to claim 2, wherein the thickener comprises any one or more of polyvinyl alcohol, carboxymethyl cellulose, and polyvinyl pyrrolidone; the adsorption material comprises any one or more of coal activated carbon powder, coconut shell activated carbon and shell activated carbon; the dispersing agent contains polyethylene wax powder and/or EVA powder.
4. The preparation method of the graphene high-filterability fiber according to claim 1, wherein in the step 2, the reaction temperature is set to be 270-320 ℃, the heating time is 1-3 h, and after the polyester chip is completely melted, the mixture is stirred under heat preservation.
5. The method for preparing the graphene high-filterability fiber as claimed in claim 1, wherein in the step 3, the stirring speed is 150-250 r/min, the mixture A is obtained after uniform stirring, and the temperature is slowly reduced to 150-180 ℃.
6. The preparation method of the graphene high-filterability fiber according to claim 1, wherein in the step 4, the mixture B is obtained by heating and stirring at 120-180 ℃ and at a stirring speed of 1800-300 r/min until the mixture B is uniformly stirred.
7. The method for preparing the graphene high-filterability fiber according to claim 1, wherein in the step 5, the mixture A and the mixture B are mixed, heated and kept at the temperature of 100 ℃ and 150 ℃, and simultaneously the thickening agent is added to adjust the viscosity of the mixture.
8. The method for preparing the graphene high-filterability fiber according to claim 7, wherein the viscosity of the mixture is adjusted and is controlled to be in the range of 100-1000cP through multiple tests by a viscosity tester.
9. The method for preparing the graphene high-filterability fiber according to claim 1, wherein in the step 6, the extrusion temperature of the spinning machine is 120-160 ℃, and the extrusion rate is 0.2-2 g/min.
10. A graphene high-filterability fiber prepared by the method of any one of claims 1 to 9.
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Application publication date: 20211203 |