CN113818253A - Preparation method of single-side hydrophobic/oleophylic and single-side hydrophobic/oleophobic spunlace non-woven fabric - Google Patents

Preparation method of single-side hydrophobic/oleophylic and single-side hydrophobic/oleophobic spunlace non-woven fabric Download PDF

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Publication number
CN113818253A
CN113818253A CN202111241152.7A CN202111241152A CN113818253A CN 113818253 A CN113818253 A CN 113818253A CN 202111241152 A CN202111241152 A CN 202111241152A CN 113818253 A CN113818253 A CN 113818253A
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roller
water
woven fabric
main body
drying
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刘宏刚
王进卿
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Jinhua Dongfang Wire Industry Co ltd
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Jinhua Dongfang Wire Industry Co ltd
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/77—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof
    • D06M11/79—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof with silicon dioxide, silicic acids or their salts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/0202—Separation of non-miscible liquids by ab- or adsorption
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/50—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with organometallic compounds; with organic compounds containing boron, silicon, selenium or tellurium atoms
    • D06M13/51—Compounds with at least one carbon-metal or carbon-boron, carbon-silicon, carbon-selenium, or carbon-tellurium bond
    • D06M13/513—Compounds with at least one carbon-metal or carbon-boron, carbon-silicon, carbon-selenium, or carbon-tellurium bond with at least one carbon-silicon bond
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
    • D06M15/657—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain containing fluorine
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
    • D06M23/16—Processes for the non-uniform application of treating agents, e.g. one-sided treatment; Differential treatment
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/16—Synthetic fibres, other than mineral fibres
    • D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M2101/32—Polyesters
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
    • D06M2200/01—Stain or soil resistance

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

The invention discloses a preparation method of single-sided hydrophobic/oleophylic and single-sided hydrophobic/oleophobic spunlace non-woven fabric, which comprises the following steps: the method is characterized in that a spunlace polyester non-woven fabric is used as a substrate, a micro-nano structure is formed by polydopamine particles, bentonite nanoparticles and a non-woven fabric porous structure, the surface energy of the non-woven fabric is reduced by dodecanethiol and POSS/FAS solution, and the non-woven fabric with a single surface hydrophobic/oleophilic and a single surface hydrophobic/oleophobic is obtained and can be used for oil-water separation. The method is simple in manufacturing process, the obtained non-woven fabric is strong in oil absorption capacity, good in oil-water separation effect and good in pollution resistance, and the problems of emission pollution of organic solvents and oil products and the like are solved.

Description

Preparation method of single-side hydrophobic/oleophylic and single-side hydrophobic/oleophobic spunlace non-woven fabric
Technical Field
The invention belongs to the technical field of composite materials, and particularly relates to a preparation method of a single-side hydrophobic/oleophilic single-side hydrophobic/oleophobic spunlace non-woven fabric.
Background
With the rapid development of society, people face more and more complex environmental problems, and in industrial production, the problem of emission pollution of organic solvents and oil products inevitably occurs, which brings great threat to the natural environment and also produces serious negative effects on the production and life of people. In daily life, the oil-water mixture is not easy to clean by using common rags, and the problem of oil stain blockage of a sewer is quite common. The key to solve the above problems is how to quickly and effectively separate oil from water to remove oil from water. At present, the main methods for oil-water separation include adsorption, centrifugation, flotation, chemical and biological oxidation, but these methods have the problems of high cost, low separation efficiency and the like.
The spunlace nonwoven fabric is formed by jetting high-pressure micro water flow onto one or more layers of fiber webs to enable the fibers to be mutually entangled, so that the fiber webs are reinforced and have certain strength, and the obtained fabric is the spunlace nonwoven fabric. The spunlace nonwoven fabric has the advantages of simple preparation process, high strength, low fuzz, high hygroscopicity, quick moisture absorption, good air permeability, soft hand feeling, good drapability and the like. Therefore, the spunlace non-woven fabric is used as a substrate, and the surface of the spunlace non-woven fabric is modified by the super-hydrophilic/super-oleophobic, super-hydrophobic/super-oleophilic functions, so that the high-efficiency separation of oil and water can be realized.
The main problem of the current oil absorption material based on the functional modification of the surface of the matrix is the durability problem, namely that the surface material is easy to peel off from the matrix and then fails. The dopamine is introduced into the surface of the substrate for modification, so that the super-strong binding effect of the dopamine can be exerted, and the surface material is not easy to fall off. In addition, the non-woven fabric is designed into a single-sided hydrophobic/oleophilic and single-sided hydrophobic/oleophobic form, which is beneficial to the high-efficiency adsorption of oil.
Disclosure of Invention
The invention provides a preparation method of a single-sided hydrophobic/oleophilic single-sided hydrophobic/oleophobic spunlace non-woven fabric in order to overcome the defects of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme: the method comprises the following steps:
a. mixing dodecyl mercaptan, dopamine hydrochloride and bentonite nanoparticles, and adding into a mixed solution of a Tris-HCl buffer solution and absolute ethyl alcohol; ultrasonically dissolving the mixture, adding spunlace polyester non-woven fabric, stirring at room temperature for a period of time, washing the non-woven fabric with deionized water, and finally drying in a drying oven for a period of time for later use;
b. dispersing polyhedral oligomeric silsesquioxane (POSS) in Fluorinated Alkylsilane (FAS) to form a transparent viscous solution, and then dispersing the solution in absolute ethyl alcohol to form a POSS/FAS solution;
c. and (c) coating the solution obtained in the step (b) on one surface of the non-woven fabric obtained in the step (a), and then placing the non-woven fabric in a drying box for a period of time to obtain the single-surface hydrophobic/oleophilic single-surface hydrophobic/oleophobic spunlace non-woven fabric.
And c, in the step b, the fluorinated alkyl silane is one of 1H,1H,2H, 2H-perfluorohexyltriethoxysilane, 1H,1H,2H, 2H-perfluorooctyltriethoxysilane and 1H,1H,2H, 2H-perfluorodecyltriethoxysilane.
And in the step b, the cage-type Polysilsesquioxane (POSS) is octadecaheptadecafluorodecyl cage-type polysilsesquioxane.
The dopamine is introduced into the surface of the matrix for modification, so that the surface modified material is not easy to fall off except for exerting the function of super-strong adhesion, and the dopamine can form a polydopamine nano-layer structure in the polymerization process, and the polydopamine nano-layer structure and the added bentonite nano-particles together construct the rough surface of the matrix, so that the hydrophobicity and the durability of the material are higher.
On the basis of the original hydrophobic/oleophylic material, one surface of the hydrophobic/oleophylic material is modified by POSS/FAS to form a hydrophobic/oleophobic double-hydrophobic surface, and finally a single-surface hydrophobic/oleophylic and single-surface hydrophobic/oleophobic structure is formed, so that oil absorbed from the hydrophobic oleophylic surface is not easy to seep out from the surface of the hydrophobic/oleophobic side, and the oil absorption effect of the non-woven fabric is improved.
The drying box comprises a main body, a feeding hole arranged on the main body, a cloth arranging device arranged on the feeding hole, a spiral guide rail arranged on the inner wall of the main body, an electric moving block arranged on the spiral guide rail, a drying roller arranged on the inner wall of the main body, a drying device arranged on the drying roller, a water squeezing device arranged on the inner wall of the main body, a driving roller arranged on the inner wall of the main body and a metal rod arranged on the electric moving block; the water squeezing device comprises a moving groove arranged on the inner wall of a main body on the inner wall of the main body, a first water squeezing roller arranged on the moving groove, a bearing arranged on the first water squeezing roller, a bearing spring arranged on the bearing, a plurality of water squeezing blocks arranged on the first water squeezing roller, a second water squeezing roller arranged on the main body, a plurality of water squeezing grooves arranged on the second water squeezing roller, a water squeezing plate arranged in the water squeezing grooves, water leakage holes arranged on the water squeezing plate, water squeezing springs arranged on the water squeezing plate, a water absorbing cavity arranged on the inner wall of the water squeezing grooves, water absorbing blocks arranged on the water absorbing cavity and water absorbing holes arranged on the water absorbing cavity; sleeving one end of the non-woven fabric on a metal rod, and then erecting the metal rod on an electric moving block; starting the electric moving block, and then starting to move along the track of the spiral guide rail; further cloth is pulled into the main body; firstly, flattening the non-woven fabric under the action of a fabric arranging device, and then dragging the non-woven fabric to a position between a first wringing roller and a second wringing roller; the first wringing roller is driven to rotate by the motor, and the wringing block presses the non-woven fabric to enter the wringing plate; then under the extrusion force of the bearing spring, the water squeezing block squeezes the non-woven fabric; further extruded water enters the water extruding groove from the water leakage hole; the water squeezing block can press the water squeezing plate to move, so that the water absorbing block is driven to move downwards; further absorbing water in the water squeezing tank into a second water squeezing roller; discharging the redundant water out of the equipment along with the rotation of the second wringing roller; then the non-woven fabric is pulled by the electric moving block and is in a spiral shape in the main body; after the metal rod contacts the driving roller, the metal rod is absorbed on the driving roller; the driving roller is driven to rotate by a motor, and the non-woven fabric is rolled up at the moment; starting a drying device to dry the non-woven fabric; when the drying is finished, the driving roller is only required to be drawn out.
The non-woven fabric can be pulled into the main body through the arrangement of the feed port, and meanwhile, the opening of the feed port is adaptive to the thickness of the non-woven fabric, so that the inner part of the main body is in a sealed state during feeding; the drying effect can be improved; the arrangement of the cloth arranging device can prevent the occurrence of wrinkles before the non-woven fabric is dried, so that the drying can be more uniform, and the drying effect is improved; the arrangement of the spiral guide rail realizes that the moving direction of the non-woven fabric in the main body is a spiral device, so that the occupied area of the non-woven fabric during drying is reduced, the occupied area of equipment is effectively increased, and the working environment is more comfortable; the drying device is arranged to realize the drying of the non-woven fabric, and meanwhile, water vapor can be timely subjected to dehydration treatment during the drying process, so that the drying effect is improved; the water squeezing device can squeeze out the water in the non-woven fabric before the non-woven fabric is dried, so that the drying efficiency is improved; the non-woven fabric can be separated from the main body along with the driving roller after winding is finished through the arrangement of the driving roller, so that material collection is facilitated; the bearing spring is arranged, so that the first wringing roller can move when the electric moving block passes through the first wringing roller; the adaptability of the first wringing roller is improved; meanwhile, the first wringing roller can apply pressure to the non-woven fabric during wringing, so that the wringing efficiency is improved; the water squeezing block can increase the contact area with the non-woven fabric during water squeezing, so that the water squeezing efficiency can be improved; through the arrangement of the water squeezing plate and the water leakage holes, water can be timely collected into the water squeezing groove after being squeezed out, and the water is prevented from flowing backwards into the non-woven fabric; the water absorbing block is arranged to synchronously move with the water squeezing plate during water squeezing, so that water in the water squeezing groove is absorbed into the second water squeezing roller; the water extruded out can be discharged out of the equipment in time through the arrangement of the second water extruding roller.
The drying device comprises a plurality of air blowing openings arranged on the drying roller, a rotating gear arranged on the drying roller, a first gear arranged on the motor, an air blowing roller arranged in the drying roller, an air blower arranged on the outer wall of the main body, a turbine arranged on the air blowing roller, an air blowing pipe arranged on the inner wall of the air blowing roller and a plurality of groups of water removing mechanisms arranged on the inner wall of the main body; the drying roller is driven to rotate when the motor is started; starting a blowing machine to blow air to the drying roller; firstly, the gas drives the turbine to start rotating, and further drives the blowing roller to start rotating; at the moment, part of the gas directly enters the drying roller, so that the blowing port blows the non-woven fabric; simultaneously, the other part of gas enters the blowing roller, is blown into the drying roller from the blowing roller and then is blown to the non-woven fabric; the non-woven fabric moves spirally in the main body, so that the gas can be blown along the spiral; when the gas contacts the water removal mechanism, the water vapor in the gas can be discharged.
The arrangement of the air blowing port can improve the uniformity of air blowing when the non-woven fabric is dried, so that the drying effect is better; on the other hand, when the hot air is blown, the hot air can be prevented from being blown to the same position of the non-woven fabric, so that the non-woven fabric is burnt out, and the function of protecting the non-woven fabric is achieved; the air blowing roller is arranged to separate air from the drying roller during drying, so that the flow rate of blowing air is reduced, hot air can be in contact with the non-woven fabric more time, and the drying effect is improved; on the other hand, the air can be uniformly blown to the non-woven fabric from the air blowing openings, so that the drying uniformity of the non-woven fabric is improved; through the device can be even make gas blow to the non-woven fabrics, improved the effect of drying.
The dewatering mechanism comprises a plurality of guide rollers arranged on the inner wall of the main body, a synchronous belt arranged on the guide rollers, a fixed roller arranged on the inner wall of the main body, a rotating roller arranged in the fixed roller, an eccentric roller arranged on the rotating roller, a toothed ring arranged in the guide rollers, a second gear arranged on the rotating roller, a condensing assembly arranged on the rotating roller, a drain pipe arranged on the rotating roller, a piston block arranged at the tail end of the fixed roller, a piston column arranged on the piston block, a first one-way valve arranged on the piston block, an air inlet arranged on the fixed roller and an air outlet arranged on the fixed roller; when the motor is started, a plurality of groups of guide rollers are driven to synchronously rotate; at the moment, the non-woven fabric can move around the guide roller and moves along the arrangement direction of the guide roller; at the moment, the non-woven fabric is spiral on the inner wall of the main body; under the action of the gear ring and the second gear, the rotating roller is synchronously driven to rotate; at the moment, the condensing assembly starts to start, and gas in the main body enters the fixed roller from the gas inlet; then the condensing assembly dries the water vapor in the gas; discharging the dried gas from the gas outlet, and continuously drying the non-woven fabric; when the condensation component is driven, the piston block can be driven to synchronously move, and water in the drain pipe is discharged out of the device.
The guide rollers are arranged, so that on one hand, the movement track of the non-woven fabric in the main body is spiral, and simultaneously, the non-woven fabric is always in a tension state; thereby effectively improving the drying effect; on the other hand, due to the special shape of the guide roller, the contact area between the non-woven fabric and the guide roller is reduced when the non-woven fabric is in contact with the guide roller; the synchronous driving of the plurality of guide rollers can be realized by the arrangement of the synchronous belt during drying, so that the moving stability of the non-woven fabric is improved; the gas can enter the inside of the fixed roller through the arrangement of the fixed roller, so that the gas can be separated from the main body, and the dewatering effect is facilitated; the arrangement of the rotating roller realizes that a channel for air flow is formed in the fixed roller, which is beneficial to the later dewatering and air exchange effect; the arrangement of the drain pipe realizes timely drainage, and improves the dewatering effect; the arrangement of the piston block realizes the exchange of the outside air and the gas in the eccentric roller, so that the eccentric roller is always in a normal temperature state, and the formation of water vapor is facilitated; the water in the drain pipe can be discharged in time through the arrangement of the piston column.
The condensation assembly comprises two elastic plates arranged on a fixed roller, a spring rod arranged between the elastic plates, a second one-way valve and a third one-way valve arranged on the fixed roller, a pressing ball arranged on the rotating roller, a water suction groove arranged on the rotating roller, a water suction ball arranged on the water suction groove, a pressing plate arranged on the water suction groove and a pressing block arranged on the elastic plates; along with the rotation of the rotating roller, the elastic plate is driven to rotate along with the inner wall of the fixed roller; the elastic plate can move on the rotating roller due to the eccentric arrangement of the rotating roller and the eccentric roller; when the pressing ball presses the elastic plate, the elastic plate contracts, and further air pressure in the elastic plate is extruded into the eccentric roller; then the piston block is driven to move; when the pressing ball is separated from the elastic plate, the elastic plate is reset to the original shape; at the moment, air is sucked from the eccentric roller, and outside air is sucked into the elastic plate; in addition, the gas entering the valley bottom roller is contacted with one of the elastic plates, and water drops in the gas can be attached to the elastic plates; when the elastic plate retracts into the rotating roller again, the elastic plate is contacted with the water absorption ball; the water drops on the elastic plate are wiped dry, and water is squeezed into the drain pipe through the pressure plate.
The elastic plate rotates along with the rotation of the rotating roller, so that the capacity in the fixed roller can be changed; thus, the air in the main body is sucked into the fixed roller under the action of the air pressure, and the stability of air exchange is improved; meanwhile, the gas entering the fixed roller contacts the surface of the elastic plate, and the elastic plate is in a normal temperature state, so that the gas condensation speed can be increased, and the dewatering efficiency is improved; when the pressing ball extrudes the elastic plate, the elastic plate can be driven to compress, so that the air pressure in the fixed roller can be increased, and the piston block can be driven to move; the stability of air exchange is improved; the water absorption balls are arranged to timely absorb water drops on the elastic plate, so that the elastic plate is always in a dry state, and the condensation effect is improved; the water in the water absorption ball can be extruded into the drainage pipe by the pressing block through the arrangement of the pressing plate; the applicability of the water absorption ball is improved.
The cloth arranging device comprises a rotating roller arranged on the outer wall of the main body, a plurality of friction rollers arranged on the rotating roller, two cloth arranging grooves arranged on the rotating roller, a fixed rod arranged in the rotating roller, two moving blocks arranged on the fixed rod, a chute arranged on the inner wall of the cloth arranging groove, two cloth arranging blocks arranged in the cloth arranging groove and a cloth arranging spring arranged on the cloth arranging blocks; the non-woven fabric is pulled into the main body embedding, and the non-woven fabric is erected on the rotating roller; the rotating roller can be driven along with the movement of the non-woven fabric; then the moving block is driven to rotate around the fixed rod; when the cloth arranging groove is positioned right below the non-woven fabric, the moving block and the cloth propping block move upwards; the whole cloth block moves along the track of the chute while moving upwards; at the moment, the two cloth blocks move towards the two ends of the rotating roller respectively to prop open the non-woven fabrics towards the two sides and flatten the folded positions.
The friction force between the non-woven fabric and the feeding hole is reduced when the non-woven fabric enters the main body through the arrangement of the rotating roller, so that the non-woven fabric is protected from being damaged; the friction force of the non-woven fabric on the rotating roller can be increased through the arrangement of the friction roller, so that the rotating roller is stably driven to rotate; the moving block can press the whole cloth block to move along with the rotation of the rotating roller, so that the whole cloth block can be driven to move when being positioned right below the non-woven fabric, and the stability of the whole cloth is improved; the arrangement of the chute realizes that the whole cloth block can move towards the two ends of the rotating roller when moving upwards; thereby realizing the unfolding of the non-woven fabric and preventing wrinkles; the non-woven fabric can be pulled to be unfolded towards two sides by arranging the whole cloth block, so that wrinkles are prevented.
In conclusion, the invention has the following advantages: the preparation process is simple to operate, and raw materials are easy to obtain; the cost is lower, the oil-water separation effect is good, the pollution resistance is good, and the application occasions are more; moisture in the gas can be removed in time during drying, and the gas is always in a dry state; the drying effect is effectively improved.
Drawings
Fig. 1 is a first structural schematic diagram of the present invention.
Fig. 2 is a second structural schematic diagram of the present invention.
FIG. 3 is a schematic diagram of the construction of the invention eliminating the blower.
Fig. 4 is a front view of the present invention.
Fig. 5 is a cross-sectional perspective view along a-a of fig. 4 of the present invention.
Fig. 6 is a cross-sectional view along a-a of fig. 4 of the present invention.
FIG. 7 is a partial view taken at A of FIG. 1 in accordance with the present invention.
Fig. 8 is a partial view of the invention at B in fig. 6.
Fig. 9 is a partial view of the invention at C of fig. 8.
Fig. 10 is a partial view of the invention at D in fig. 2.
Fig. 11 is a partial view of the invention at E of fig. 5.
FIG. 12 is a partial view taken at I of FIG. 3 according to the present invention.
Fig. 13 is a partial view of the invention at F in fig. 11.
Fig. 14 is a partial view of the invention at G in fig. 5.
Fig. 15 is an exploded view of the cloth finishing device of the present invention.
Fig. 16 is a partial view at H of fig. 15 of the present invention.
Detailed Description
A preparation method of single-sided hydrophobic/oleophylic and single-sided hydrophobic/oleophobic spunlace nonwoven fabric comprises the following steps:
a. mixing the dodecanethiol, the dopamine hydrochloride and the bentonite nanoparticles in a mass ratio of 20:7:1, and then adding the mixture into a mixed solution of a Tris-HCl buffer solution and absolute ethyl alcohol in a mass ratio of 1:2, wherein the mass ratio of the mixture of the dodecanethiol, the dopamine hydrochloride and the bentonite nanoparticles to the mixed solution of the Tris-HCl buffer solution and the absolute ethyl alcohol is 1: 50. Ultrasonically dissolving the mixture, adding spunlace polyester non-woven fabric, stirring at room temperature for 5 hours, washing the non-woven fabric with deionized water, and finally drying in a drying oven at 60 ℃ for 30 minutes for later use;
b. dispersing polyhedral oligomeric silsesquioxane (POSS) into Fluorinated Alkylsilane (FAS) according to a mass ratio of 1:5 to form a transparent viscous solution, and then dispersing the solution into absolute ethyl alcohol according to a mass ratio of 1:100 to form a POSS/FAS solution;
c. coating the solution obtained in the step b on one surface of the non-woven fabric obtained in the step a, and then arranging the non-woven fabric in a drying oven at 140 ℃ for 30 minutes to obtain the single-surface hydrophobic/oleophilic single-surface hydrophobic/oleophobic spunlace non-woven fabric;
the pH of the Tris-HCl buffer solution is 8.5.
In the step b, the fluorinated alkyl silane is one of 1H,1H,2H, 2H-perfluorohexyltriethoxysilane, 1H,1H,2H, 2H-perfluorooctyltriethoxysilane and 1H,1H,2H, 2H-perfluorodecyltriethoxysilane; cage Polysilsesquioxane (POSS) is an octadecaheptafluorodecyl cage polysilsesquioxane.
As shown in fig. 1-16, the drying oven includes a main body 1, a feed inlet 11, a cloth finishing device 2, a spiral guide rail 12, an electric moving block 13, a drying roller 14, a drying device 3, a wringing device 4, a driving roller 15, and a metal rod 16; the wringing device 4 comprises a moving groove 41, a first wringing roller 42, a bearing 43, a bearing spring 44, a wringing block 45, a second wringing roller 46, a wringing groove 47, a wringing plate 48, a water leakage hole 49, a wringing spring 490, a water suction cavity 491, a water suction block 492, a water suction hole 493 and a motor 10; the longitudinal section of the main body 1 is circular; the feed inlet 11 is formed in the outer wall of the main body 1, and the cross section of the feed inlet 11 is rectangular; the cloth arranging device 2 is arranged on the feeding hole 11; the cross section of the spiral guide rail 12 is spiral and is arranged on the inner wall of the main body 1; the electric moving block 13 is arranged on the spiral guide rail 12, and the electric moving block 13 automatically moves on the spiral guide rail 12; is the prior art; the drying roller 14 is arranged on the inner wall of the main body 1 and is positioned at the innermost end of the spirulina guide rail 12; the drying device 14 is arranged on the drying roller 14; the cross section of the driving roller 15 is petal-shaped and is detachably embedded on the main body 1; the drive roller 15 is located at the rotation center of the spiral guide rail 12; the metal rod 16 is erected on the electric moving block 13; the metal rod 16 can be embedded with the driving roller 15; the water squeezing device 4 is arranged on the inner wall of the main body 1; the moving groove 41 is arranged on the main body 1; the first wringing roller 42 can rotate and can be embedded on the moving groove 41 in an up-and-down moving way; the first wringing roller 42 is positioned above the spiral track 12; the bearing 43 is sleeved on the wringing roller 42; the bearing spring 44 connects the bearing 43 and the inner wall of the moving groove 41; the water squeezing blocks 45 are arranged uniformly along the surface of the first water squeezing roller 42; the second wringing roller 46 is rotatably embedded on the inner wall of the main body 1 and is positioned below the first wringing roller 42; and the helical track 12 is located between the first wringing roller 42 and the second wringing roller 46; the water squeezing grooves 47 are provided in plurality and are uniformly arranged along the surface of the second technical roller 46; the wringing slot 47 is engaged with the wringing block 45; the water squeezing plate 48 can be vertically moved and embedded in the water squeezing groove 47; the water leakage holes 49 are formed in the technical plate 48; the wringing spring 490 is connected with the wringing plate 49 and the wringing groove 47; the water suction cavity 491 is arranged in the inner wall of the water squeezing tank 47; the water absorption block 492 is movably embedded in the water absorption cavity 491 and is fixedly connected with the water absorption plate; the water suction hole 493 is connected with the water suction cavity 491 and the water squeezing groove 47; the motor 10 is provided on the main body 1.
As shown in fig. 3-6, the drying device 3 includes an air blowing port 31, a rotary gear 32, a first gear 33, an air blowing roller 34, an air blower 35, a turbine 36, an air blowing pipe 37, and a water removing mechanism 5; the air blowing openings 31 are formed in the drying roller 14, a plurality of air blowing openings 31 are formed, and the air blowing openings are uniform along the circumferential direction of the drying roller 14; the rotating gear 32 is arranged on the drying roller 14; the first gear 33 is arranged on the motor 10 and meshed with the rotating gear 32; the blowing roller 34 is rotatably embedded on the inner wall of the main body 1, and the blowing roller 34 is positioned in the drying roller 14; the air blower 35 is arranged on the outer wall of the main body 1, and the air blower 35 blows hot air; the turbine 36 is fixedly arranged on the blowing roller 34; the air blowing pipe 37 is arranged on the air blowing roller 34; a plurality of air blowing pipes 37 are provided and are uniformly arranged along the radial direction of the air blowing roller 34; the dewatering mechanisms 5 are provided with a plurality of groups and are uniformly arranged along the track direction of the spiral guide rail 12.
As shown in fig. 11 to 12, the water removing mechanism 5 includes a guide roller 51, a timing belt 52, a fixed roller 53, a rotating roller 54, an eccentric roller 55, a toothed ring 56, a second gear 57, a condensing assembly 6, a water discharging pipe 58, a piston block 59, a piston cylinder 590, a first check valve 591, an air inlet 592, an air outlet 593; the guide roller 51 is rotatably embedded on the inner wall of the main body 1, and the guide roller 51 is uniformly arranged along the spiral direction of the spiral track 12; the guide roller 51 is provided with a plurality of slots; the synchronous belt 52 is connected with a plurality of guide rollers 51; the fixed roller 53 is fixedly arranged on the inner wall of the main body 1 and is positioned in the guide roller 51; the rotating roller 54 is rotatably embedded on the inner wall of the main body 1, and the axis of the rotating roller 54 is eccentrically arranged with the axis of the fixed roller 53; the outer wall of the rotating roller 54 is tightly attached to the lower end of the inner wall of the fixed pipe 53; the eccentric roller 55 is fixedly arranged on the inner wall of the main body 1, and the axis of the eccentric roller 55 is eccentrically arranged with the axis of the rotating roller 54; and the axis of the eccentric roller 55 coincides with the axis of the fixed roller 53; the toothed ring 56 is provided with a guide roller 51; the second gear 57 is provided on the rotating roller 54 and meshed with the toothed ring 56; the water discharge pipe 58 is arranged on the inner wall of the rotating roller 54 and is communicated with the outside; the condensation component 6 is arranged on the rotating roller 54; the piston block 59 is movably arranged on the inner wall of the fixed roller 53; the piston post 590 is fixedly arranged on the piston block 59 and movably embedded in the drain pipe 58; the piston column 590 is provided with a one-way valve which is directly purchased from the market; the first check valve 591 is arranged on the piston block 59; the air inlet 592 is formed in the fixed roller 53 and is positioned at the lower right end of the fixed roller 53; the air outlet 593 is arranged on the fixed roller 53 and is positioned at the upper left end of the fixed roller 53.
As shown in fig. 11-13, the condensing assembly 6 includes an elastic plate 61, a spring rod 62, a second check valve 63, a third check valve 64, a pressing ball 65, a water suction groove 66, a water suction ball 67, a pressing plate 68, and a pressing block 69; the two groups of elastic plates 61 are uniformly arranged along the circular shaft direction of the eccentric roller 55; each group of elastic plates 61 consists of two aluminum plates which can be extruded mutually; the longitudinal section of the spring rod 62 is rhombic and is arranged between the elastic plates 61; the second check valve 63 and the third check valve 64 connect the fixed roller 51 and the elastic plate 61; the pressing balls 65 are arranged on the rotating roller 54 and are pressed against two sides of the elastic plate 61; the water suction grooves 66 are formed in the rotating roller 54 and located on two sides of the elastic rod 61; the water absorption ball 67 is arranged on the water absorption groove 66 and is tightly attached to the side wall of the elastic plate 61; the water absorption ball 67 is made of water absorption cloth on the market; the pressure plate 68 can be embedded on the water suction groove 66 in a vertically movable manner and is connected with the water suction groove 66 by a spring; the pressing plate 68 is pressed against the water absorption ball 67; the pressing block 69 is disposed at the upper end of the elastic plate 61.
As shown in fig. 15-16, the cloth arranging device 2 comprises a rotating roller 21, a friction roller 22, a cloth arranging groove 23, a fixing rod 24, a moving block 25, a chute 26, a cloth arranging block 27 and a cloth arranging spring 28; the rotating roller 21 is rotatably embedded in the inner wall of the main body 1 and is positioned at the front end of the feed port 11; the cross section of the friction roller 22 is arc-shaped and is uniformly arranged along the circumferential direction of the rotating roller 21; the number of the cloth arranging grooves 23 is 2, and the cloth arranging grooves are uniformly arranged along the circumferential direction of the rotating roller 21; the fixing rod 24 is fixedly arranged on the inner wall of the main body 1 and is positioned inside the rotating roller 21; the moving block 25 is rotatably sleeved on the fixed rod 24 and is telescopically embedded in the cloth arranging groove 23; the longitudinal section of the chute 26 is L-shaped and is arranged on the inner wall of the cloth arranging groove 23; the whole cloth piece 27 is provided with two cloth pieces, and one cloth piece is telescopically embedded in the other whole cloth piece 27; the side edges of the two whole cloth pieces 27 are embedded in the inclined grooves 26; the cloth adjusting spring 28 connects the cloth adjusting block 27 and the cloth adjusting groove 23.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (8)

1. A preparation method of single-sided hydrophobic/oleophylic and single-sided hydrophobic/oleophobic spunlace nonwoven fabric comprises the following steps:
a. mixing dodecyl mercaptan, dopamine hydrochloride and bentonite nanoparticles, and adding into a mixed solution of a Tris-HCl buffer solution and absolute ethyl alcohol; ultrasonically dissolving the mixture, adding spunlace polyester non-woven fabric, stirring at room temperature for a period of time, washing the non-woven fabric with deionized water, and finally drying in a drying oven for a period of time for later use;
b. dispersing polyhedral oligomeric silsesquioxane (POSS) in Fluorinated Alkylsilane (FAS) to form a transparent viscous solution, and then dispersing the solution in absolute ethyl alcohol to form a POSS/FAS solution;
c. and (c) coating the solution obtained in the step (b) on one surface of the non-woven fabric obtained in the step (a), and then placing the non-woven fabric in a drying box for a period of time to obtain the single-surface hydrophobic/oleophilic single-surface hydrophobic/oleophobic spunlace non-woven fabric.
2. The method for preparing the single-sided hydrophobic/oleophilic and single-sided hydrophobic/oleophobic spunlace nonwoven fabric according to claim 1, characterized in that: and c, in the step b, the fluorinated alkyl silane is one of 1H,1H,2H, 2H-perfluorohexyltriethoxysilane, 1H,1H,2H, 2H-perfluorooctyltriethoxysilane and 1H,1H,2H, 2H-perfluorodecyltriethoxysilane.
3. The method for preparing the single-sided hydrophobic/oleophilic and single-sided hydrophobic/oleophobic spunlace nonwoven fabric according to claim 1, characterized in that: and in the step b, the cage-type Polysilsesquioxane (POSS) is octadecaheptadecafluorodecyl cage-type polysilsesquioxane.
4. The method for preparing the single-sided hydrophobic/oleophilic and single-sided hydrophobic/oleophobic spunlace nonwoven fabric according to claim 1, characterized in that: the drying box comprises a main body (1), a feeding hole (11) arranged on the main body (1), a cloth arranging device (2) arranged on the feeding hole (11), a spiral guide rail (12) arranged on the inner wall of the main body (1), an electric moving block (13) arranged on the spiral guide rail (12), a drying roller (14) arranged on the inner wall of the main body (1), a drying device (3) arranged on the drying roller (14), a water squeezing device (4) arranged on the inner wall of the main body (1), a driving roller (15) arranged on the inner wall of the main body (1), and a metal rod (16) arranged on the electric moving block (13); the water squeezing device (4) comprises a moving groove (41) arranged on the inner wall of a main body (1) on the inner wall of the main body (1), a first water squeezing roller (42) arranged on the moving groove (41), a bearing (43) arranged on the first water squeezing roller (42), a bearing spring (44) arranged on the bearing (43), a plurality of water squeezing blocks (45) arranged on the first water squeezing roller (42), a second water squeezing roller (46) arranged on the main body (1), a plurality of water squeezing grooves (47) arranged on the second water squeezing roller (46), a water squeezing plate (48) arranged in the water squeezing groove (47), water leakage holes (49) arranged on the water squeezing plate (48), a water squeezing spring (490) arranged on the water squeezing plate (48), a water suction cavity (491) arranged on the inner wall of the water squeezing groove (47), and a water suction block (492) arranged on the water suction cavity (491), A water suction hole (493) arranged on the water suction cavity (491); one end of the non-woven fabric is sleeved on the metal rod (16), and then the metal rod (16) is erected on the electric moving block (13); starting the electric moving block (13), and then starting to move along the track of the spiral guide rail (12); further cloth is pulled into the main body (1); firstly, the non-woven fabric is flattened under the action of a fabric arranging device (2), and then the non-woven fabric is pulled between a first wringing roller (42) and a second wringing roller (46); the first wringing roller (42) is driven to rotate by a motor, and at the moment, the wringing block (45) presses the non-woven fabric to enter the wringing plate (48); then under the extrusion force of a bearing spring (44), a water extrusion block (45) extrudes the non-woven fabric; further extruded water enters the water extruding groove (47) from the water leakage hole (49); the water squeezing block (45) can press the water squeezing plate (48) to move, so that the water absorbing block (492) is driven to move downwards; further sucking the water in the water squeezing tank (47) into the second water squeezing roller (42); discharging the excess water out of the apparatus with the rotation of the second wringing roller (42); then the non-woven fabric is pulled down by the electric moving block (13) and is in a spiral shape in the main body (1); after the metal rod (16) contacts the driving roller (15), the metal rod (16) is absorbed on the driving roller (15); the driving roller (15) is driven to rotate by the motor (10), and the non-woven fabric is collected at the moment; starting a drying device to dry the non-woven fabric; when the drying is finished, the driving roller (15) is only required to be drawn out.
5. The method for preparing the single-sided hydrophobic/oleophilic and single-sided hydrophobic/oleophobic spunlace nonwoven fabric according to claim 4, wherein the method comprises the following steps: the drying device (3) comprises a plurality of air blowing openings (31) arranged on the drying roller (14), a rotating gear (32) arranged on the drying roller (14), a first gear (33) arranged on the motor (10), an air blowing roller (34) arranged in the drying roller (14), an air blower (35) arranged on the outer wall of the main body (1), a turbine (36) arranged on the air blowing roller (34), an air blowing pipe (37) arranged on the inner wall of the air blowing roller (34), and a plurality of groups of water removing mechanisms (5) arranged on the inner wall of the main body (1); the motor (10) is started to drive the drying roller (14) to start rotating at the same time; starting a blower (35) to blow air to the drying roller (14); firstly, the gas drives the turbine (36) to start rotating, and further drives the blowing roller (34) to start rotating; at the moment, a part of the gas directly enters the drying roller (14), so that the blowing openings (31) blow to the non-woven fabric; simultaneously, the other part of the gas enters the blowing roller (34), is blown into the drying roller (14) from the blowing roller (37) and is blown to the non-woven fabric; the non-woven fabric moves spirally in the main body (1), so that the gas can be blown along the spiral shape; when the gas contacts the water removal mechanism (5), the water vapor in the gas is discharged.
6. The method for preparing the single-sided hydrophobic/oleophilic and single-sided hydrophobic/oleophobic spunlace nonwoven fabric according to claim 4, wherein the method comprises the following steps: the dewatering mechanism (5) comprises a plurality of guide rollers (51) arranged on the inner wall of the main body (1), a synchronous belt (52) arranged on the guide rollers (51), a fixed roller (53) arranged on the inner wall of the main body (1), a rotating roller (54) arranged in the fixed roller (53), an eccentric roller (55) arranged on the rotating roller (54), a toothed ring (56) arranged in the guide rollers (51) and a second gear (57) arranged on the rotating roller (54), the condensation component (6) is arranged on the rotating roller (54), the drain pipe (58) is arranged on the rotating roller (54), the piston block (59) is arranged at the tail end of the fixed roller (53), the piston column (590) is arranged on the piston block (59), the first check valve (591) is arranged on the piston block (59), and the air inlet (592) and the air outlet (593) are arranged on the fixed roller (53); when the motor (10) is started, a plurality of groups of guide rollers (51) are driven to synchronously rotate; at this time, the non-woven fabric moves around the guide roller (51) and moves through the arrangement direction of the guide roller (51); at the moment, the non-woven fabric is spiral on the inner wall of the main body (1); under the action of the gear ring (56) and the second gear (57), the rotating roller (54) is synchronously driven to rotate; at the moment, the condensation component (6) starts to be started, and the gas in the main body (1) enters the fixed roller (53) from the gas inlet (592); then the condensing assembly (6) dries the water vapor in the gas; the dried gas is discharged from a gas outlet (593), and the non-woven fabric is continuously dried; when the condensing assembly is driven, the piston block (590) is driven to synchronously move, and water in the drain pipe is drained out of the device.
7. The method for preparing the single-sided hydrophobic/oleophilic and single-sided hydrophobic/oleophobic spunlace nonwoven fabric according to claim 6, wherein the method comprises the following steps: the condensation component (6) comprises two elastic plates (61) arranged on a fixed roller (53), a spring rod (62) arranged between the elastic plates (61), a second one-way valve (63) and a third one-way valve (64) arranged on the fixed roller (51), a pressing ball (65) arranged on the rotating roller (54), a water suction groove (66) arranged on the rotating roller (54), a water suction ball (67) arranged on the water suction groove (66), a pressing plate (68) arranged on the water suction groove (66), and a pressing block (69) arranged on the elastic plates (61); along with the rotation of the rotating roller (54), the elastic plate (61) is driven to rotate along the inner wall of the fixed roller (53); the elastic plate (61) can move on the rotating roller (54) due to the eccentric arrangement of the rotating roller (54) and the eccentric roller (55); when the pressing ball (65) presses the elastic plate (61), the elastic plate (61) contracts, and further air pressure in the elastic plate (61) is squeezed into the eccentric roller (55); then drives the piston block (59) to move; when the abutting ball (65) is separated from the elastic plate (61), the elastic plate (61) is reset to the original shape; at this time, air is sucked from the eccentric roller (55) to suck outside air into the elastic plate (61); in addition, the gas entering the valley bottom roller (53) is contacted with one of the elastic plates (61), and water drops in the gas can be attached to the elastic plates (61); when the elastic plate (61) retracts into the rotating roller (54) again, the elastic plate is contacted with the water absorption ball (67); water drops on the elastic plate (61) are wiped dry, and water is squeezed into the drain pipe (58) through the pressure plate (68).
8. The method for preparing the single-sided hydrophobic/oleophilic and single-sided hydrophobic/oleophobic spunlace nonwoven fabric according to claim 4, wherein the method comprises the following steps: the cloth arranging device (2) comprises a rotating roller (21) arranged on the outer wall of the main body (1), a plurality of friction rollers (22) arranged on the rotating roller (21), two cloth arranging grooves (23) arranged on the rotating roller (21), a fixed rod (24) arranged in the rotating roller (21), two moving blocks (25) arranged on the fixed rod (24), a chute (26) arranged on the inner wall of the cloth arranging groove (23), two cloth arranging blocks (27) arranged in the cloth arranging grooves (23), and a cloth arranging spring (28) arranged on the cloth arranging blocks (27); the non-woven fabric is pulled into the main body (1) to be embedded, and the non-woven fabric is erected on the rotating roller (21); the rotating roller (21) is driven along with the movement of the non-woven fabric; then, the moving block (25) is driven to rotate around the fixed rod (24); when the cloth arranging groove (23) is positioned right below the non-woven fabric, the moving block (25) and the cloth arranging block (27) are propped to move upwards; the whole cloth block (27) moves along the track of the chute (26) while moving upwards; at the moment, the two cloth arranging blocks (27) respectively move towards the two ends of the rotating roller (21) to spread the non-woven fabrics to the two sides and flatten the folded positions.
CN202111241152.7A 2021-10-25 2021-10-25 Preparation method of single-side hydrophobic/oleophylic and single-side hydrophobic/oleophobic spunlace non-woven fabric Pending CN113818253A (en)

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CN111632581A (en) * 2019-03-01 2020-09-08 江南大学 Raspberry-like super-hydrophobic oleophylic cotton fiber oil-water adsorption/separation membrane and preparation method and application thereof
CN210952212U (en) * 2019-10-17 2020-07-07 杭州萧山王氏雨具有限公司 Drying device for preventing waterproof cloth from being polluted by steam

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