31 results about "Dye adsorption" patented technology

The invention belongs to the technical field of methyl red azo dye purification, and discloses a methyl red azo dye adsorbent with good adsorption performance on a methyl red azo dye adsorbent, and a preparation method and application thereof. The preparation method comprises the following steps: (1) preparing a first precursor solution and a second precursor solution; the first precursor solution contains melamine, and the second precursor solution contains cyanuric acid and / or barbituric acid; (2) sequentially adding the first precursor solution and the second precursor solution into biomass carbon powder to form a reaction solution; enabling the supermolecule aggregate to grow in situ and coat the surface of the biomass carbon powder under a stirring condition to form a solid-liquid mixture; removing the solvent in the solid-liquid mixture, and drying to obtain a supramolecular composite precursor; (3) carrying out pressure molding on a mixture of the supramolecular composite precursor, silicate clay mineral and nickel salt to obtain a green body; and (4) carrying out heat treatment on the green body to obtain the methyl red azo dye adsorbent.

The utility model discloses a dark fiber composite yarn leveling and dyeing device which comprises a workbench, and a dye bin is fixedly installed on the inner wall of the bottom of the workbench. The number of the winding and unwinding assemblies is two, each winding and unwinding assembly comprises shaft sleeves, the shaft sleeves are arranged in a left-right paired mode, and the inner walls of the shaft sleeves are rotationally connected with line rollers; the spraying and dyeing assembly comprises a self-sucking pump and a heater, the output end of the self-sucking pump is connected with a spray head, the spray head faces the yarn sleeve, the dyeing efficiency is remarkably improved through the collaborative design of the heater and the spray head in the device, the heater can accurately heat dye to a proper temperature, and the dyeing efficiency is improved. The dye molecule activity is enhanced, and the dye can permeate yarn sleeve fibers more easily. The nozzle uniformly sprays the heated dye, the contact area of the dye and the yarn sleeve is increased, the dye adsorption process is accelerated, and compared with a traditional dyeing mode, the dyeing time is greatly shortened, the production efficiency is effectively improved, and the large-scale production requirement is met.

The invention relates to the technical field of adsorbents, and discloses a preparation method and application of a sunflower stem pith foam adsorption material.The preparation method comprises the steps that microfibrillated cellulose, quaternized chitosan and sunflower stem pith powder are put into a beaker to be mixed, a cross-linking agent is added, and stirring cross-linking is conducted; and then cryopreserving and thawing to prepare the composite sunflower stem pith foam adsorption material with the dispersed sunflower stem pith powder wrapped by the chitosan. Chitosan is used as a support to support and disperse sunflower stem pith powder, so that sunflower stem pith agglomeration is avoided, and active adsorption sites are increased. The adsorption capacity of the sunflower stem pith foam adsorption material prepared by the method is greatly increased, the adsorption capacity of Congo red is 9 times that of uncompounded sunflower stem pith, the performance is greatly improved, and the sunflower stem pith foam adsorption material can be applied to adsorption of hydrophobic and anionic azo dyes and has a good application prospect. The adsorbent has the advantages of low cost, simplicity in preparation, no chemical pollution, reproducibility, excellent adsorption performance and the like.

The invention discloses a sizing-free dyeing method, colored yarn and colored fabric, and belongs to the field of textile, the method comprises the following steps: cutting colored waste silk fabric into fragments, dissolving the fragments with a dissolving solution containing calcium chloride and ethanol, intercepting silk fibroin molecules, adding a penetrant and poly (diallyldimethylammonium chloride), adjusting the mixture to be alkaline with sodium carbonate, and drying to obtain the sizing-free waste silk fabric. The pure cotton yarn is subjected to padding dyeing, the dyed pure cotton yarn is neutralized, and then the pure cotton yarn is cleaned and dried. According to the method, the dye on the colored waste silk can be used for dyeing the pure cotton yarn, meanwhile, silk fibroin is matched with poly (diallyldimethylammonium chloride) so that fiber hairiness of the pure cotton yarn can be attached, additional sizing is not needed, and the dye is promoted to be adsorbed to the pure cotton yarn; the silk fibroin brings smooth and soft touch feeling similar to that of silk to the pure cotton yarn to a certain extent, so that the fabric woven by the yarn has the characteristics of softness and comfort without desizing treatment.

The present application provides a sunflower leaf dyeing and setting process. The process comprises the steps of: (1) removing petiole and retaining only leaf blade; (2) separating each leaf blade and hanging on a support; (3) adding dye to heated water and stirring to dissolve and obtain dye liquor; (4) after heating the dye liquor, immersing the fixed leaf blade vertically in the dye liquor and continuing to cook for a certain time; (5) removing the dyed leaf blade and cooling and soaking in water; (6) after setting, airing under natural sunlight and carrying out double-sided clip ironing. Each leaf blade is hung on a support, the leaf blades are separated and fully contact with the dye liquor to realize uniform dyeing. High-temperature cooking of sunflower leaf causes the sunflower leaf to swell by absorbing water, and the dye solution penetrates into the sunflower leaf to enhance the brightness of the sunflower leaf and improve the dye adsorption rate. The oil and wax on the surface of the sunflower leaf are separated from the sunflower leaf and float on the liquid surface during high-temperature cooking. Double-sided clip ironing not only can fix the color of the dyed sunflower leaf, but also can set the sunflower leaf to maintain the oil and bright gloss of the sunflower leaf.

The invention provides an azo dye adsorbent preparation method, which comprises: S1, carrying out alkali treatment on a pyrolytic coke raw material to obtain porous pyrolytic coke; s2, introducing inert gas into the organic amine solution to obtain inert gas carrying organic amine; the organic amine comprises at least one of diethanol amine, hydroxyethyl ethylenediamine and diethylenetriamine; and S3, placing the porous pyrolytic coke in a reactor, then introducing inert gas carrying organic amine into the reactor, and carrying out organic amine modification on the porous pyrolytic coke by adopting a low-temperature plasma technology to obtain the azo dye adsorbent. According to the method, the pyrolytic coke is adopted as the raw material, resource utilization of the waste heat pyrolytic coke is achieved while pollution is reduced, the waste heat pyrolytic coke obtains the use value again through recycling and reprocessing, and resource waste is effectively reduced. The azo dye adsorbent obtained by adopting the preparation method disclosed by the invention has an excellent adsorption effect and has a good application prospect in azo dye wastewater treatment.

This invention discloses an aminoindole derivative-based porous polymer, its preparation method, and its application, belonging to the field of dye adsorbent technology. The preparation method is as follows: 2-phenylindole is dissolved in acetic acid, and sodium nitrite aqueous solution is added dropwise. The system is then stirred and reacted at low temperature. After the reaction, the precipitate is collected and dried to obtain product 1. Product 1 is dissolved in ethanol, and NaOH solution is slowly added dropwise while stirring and mixing. Na2S2O4 is added, and the reaction is stirred under heating conditions. After the reaction, the precipitate is collected and dried to obtain product 2. Product 2, 1,2-dichloroethane, and dimethoxymethane are stirred and mixed. A catalyst is added, and the reaction is stirred and reacted under heating conditions. After the reaction, the precipitate is collected, washed, and dried to obtain the final product. The aminoindole derivative-based porous polymer of this application has high specific surface area, high adsorption rate, and high adsorption capacity, effectively solving the problems existing in the prior art.

The application provides a preparation method of a fluorine-free hydrophobic modified W-MEL or W-MFI zeolite molecular sieve membrane for oil-water separation, i.e. an in-situ crystallization method for preparing W-MEL and W-MFI type zeolite molecular sieve membranes. The method first pretreats a carrier with 3-aminopropyl triethoxysilane, then places the carrier in a reaction kettle, and performs high-temperature crystallization in a synthesis liquid to obtain W-MEL and W-MFI zeolite molecular sieve membranes with excellent performance. The research provides a simple synthesis method for novel W-MEL and W-MFI zeolite membrane materials, and innovatively proposes a fluorine-free hydrophobic modification strategy, so that the oil-water mixture can be effectively separated, and the method is applied to dye adsorption. The method provided by the application has strong operability, and has important industrial promotion and practical application value.

To suppress polyene formation in a polarizer made of a polyvinyl alcohol resin film.SOLUTION: A polarizing plate 100 includes a polarizer 101 in which a dichroic dye is adsorbed and aligned on a polyvinyl alcohol-based resin film, and a protective film 103 laminated on at least one surface of the polarizer 101 via an adhesive layer 102. The adhesive layer 102 contains a urea compound. The polarizer 101 contains a radical scavenger. The urea compound is at least one selected from the group consisting of urea, urea derivatives, thiourea, and thiourea derivatives. The radical scavenger is a hindered amine compound.SELECTED DRAWING: Figure 1

The utility model discloses a dye adsorption device, and relates to the field of dye wastewater treatment, the dye adsorption device comprises a support seat, a filter box is fixed on the support seat, a conveying pipe is fixed on the filter box, a discharge pipe is fixed at one end of the filter box, a valve is mounted on the discharge pipe, a plurality of support frames are arranged in the filter box, and the support frames are fixed on the support seat. A filter plate is fixed on the support frames, a lifting maintenance mechanism is arranged between the plurality of support frames and the filter box, and a stirring mechanism is arranged at one end, close to the conveying pipe, of the filter box. When the filter plates need to be overhauled and replaced, the plurality of supporting frames and the filter plates are lifted by directly utilizing the lifting overhauling mechanism, then the filter plates are overhauled and replaced by workers, and the plurality of filter plates are simultaneously fed into the filter box after being overhauled and replaced. Therefore, the plurality of filter plates can be conveniently taken out from the filter box at the same time, and workers can conveniently overhaul and replace the filter plates.

The invention discloses an aviation aluminum material pulse anodic oxidation process, the aviation aluminum material pulse anodic oxidation process comprises a pretreatment step, an anodic oxidation step and a hole sealing step, electrolyte used in the anodic oxidation step is sulfuric acid and oxalic acid dihydrate composite electrolyte, the current is forward direct current pulse current, and the hole sealing step is a hole sealing step. The concentration of sulfuric acid in the electrolyte is 130-180 g / L, the concentration of oxalic acid dihydrate is 30-60 g / L, the current density of the forward direct current pulse current is 1.5-2.5 A / dm, and the ratio of current time to current-free time in the period of the pulse current is (3-5): 1. Through the mode, the finally obtained oxidation film layer is uniform and compact in structure, dye adsorption is uniform, firm and stable during dyeing, the hardness and the wear resistance are further improved, and the corrosion resistance and the insulating property are remarkably enhanced.

The invention belongs to the technical field of MOF synthesis and dye adsorption, and particularly relates to an electrochemical synthesis method of iron-based pacs-MOF and application of the iron-based pacs-MOF in organic dye adsorption.The electrochemical synthesis method comprises the following steps that terephthalic acid, 2, 4, 6-tri (4-pyridyl)-1, 3, 5-triazine and tetrabutylammonium bromide are added into a mixed solvent of DMF and ethyl alcohol, acetic acid is added, the mixture is stirred to be uniform, the reaction is carried out, and the iron-based pacs-MOF is obtained. Performing ultrasonic treatment on the obtained mixed raw material; taking an iron sheet as a cathode and an anode, taking the uniformly mixed solution as an electrolyte, fixing the electrodes, and carrying out electrochemical reaction; and after the reaction is finished, centrifuging reaction liquid, removing supernate, adding ethanol into a centrifugal tube, activating, and drying after the activation is finished, so as to obtain a sample. The iron-based pacs-MOF can be applied to methyl red adsorption, and the maximum adsorption capacity is 997 mg / g.

The utility model belongs to the technical field of grinding, polishing and surface fluid coating in operation transportation, and particularly relates to steel pipe painting complete machine equipment which comprises two longitudinal fixed sliding rails, and a first painting box assembly and a second painting box assembly which are arranged between the two longitudinal fixed sliding rails in a spaced mode in the longitudinal direction. The first coloring box assembly and the second coloring box assembly respectively comprise a transverse coloring box between the two fixed sliding rails, a plurality of dye adsorption blocks are arranged on the coloring boxes at intervals in the transverse direction, and the upper surfaces of the dye adsorption blocks are flush and are exposed out of the upper surfaces of the coloring boxes; the dye adsorption blocks of the first painting box assembly and the second painting box assembly are arranged in a staggered manner in the transverse direction; a movable supporting frame assembly is arranged on the two fixed sliding rails in a sliding mode, and the movable supporting frame assembly comprises two movable supporting frames which are arranged on the two fixed sliding rails in a one-to-one mode and symmetrically arranged so that the two ends of the steel pipe can be clamped respectively. The device can avoid the problem that coloring of interval warning paint on the outer surface of the pipe fitting is inconvenient, the process of dyeing and coating the axial interval warning paint on the outer surface of the pipe fitting is automatically completed, and quality and efficiency are improved.

The invention discloses a method for promoting reconnection of graphene oxide after dye adsorption through ion regulation and control, which comprises the following steps: step 1, uniformly stirring graphene oxide (GO), and then preparing an ion-doped GO composite material by adopting a dispensing method; 2, shearing or grinding the ion-doped GO composite material obtained in the step 1, and adding the ion-doped GO composite material into a dye solution; and step 3, standing for a period of time, finishing dye adsorption, reconnecting the ion-doped GO composite material which is originally cut into pieces or ground into powder, and keeping stable connection without breaking under a certain ultrasonic condition. According to the invention, material recovery and reutilization are realized, and secondary pollution of an adsorption material to a water body is avoided. The cost is lower, the operation is simple, and large-scale use and popularization are easy.

The application belongs to the technical field of methyl red azo dye purification, and discloses a methyl red azo dye adsorbent with good adsorption performance on methyl red azo dye, and a preparation method and application thereof. The preparation method comprises the following steps: (1) preparing a first precursor solution and a second precursor solution; the first precursor solution contains melamine, and the second precursor solution contains cyanuric acid and / or barbituric acid; (2) sequentially adding the first precursor solution and the second precursor solution into biomass carbon powder to form a reaction liquid; under stirring, in-situ growth of a supramolecular aggregate is realized and the supramolecular aggregate is coated on the surface of the biomass carbon powder to form a solid-liquid mixture; the solvent in the solid-liquid mixture is removed, and the supramolecular composite precursor is obtained through drying; (3) pressure forming a mixture of the supramolecular composite precursor, a silicate clay mineral and a nickel salt into a green body; and (4) performing heat treatment on the green body to obtain the methyl red azo dye adsorbent.

This invention belongs to the field of environmental functional materials and water treatment technology, specifically relating to a multifunctional aerogel membrane based on charge-induced demulsification, its preparation method, and its applications. The oil-water separation aerogel membrane prepared by this invention uses quaternized chitosan as the backbone and agricultural waste corn cobs as the filler material, prepared through a directional freeze-drying composite process. This aerogel membrane combines multiple functions including oil-water separation, emulsion demulsification, and dye adsorption. For oil-water mixtures, after 10 cycles of recycling, the separation flux can maintain more than 85% of the initial flux, with a separation efficiency of up to 99%. The separation efficiency for different types of oil-in-water emulsions can reach over 97%. Furthermore, the raw materials are renewable, and the preparation process is green and environmentally friendly, solving the problems of weak demulsification ability, single function, and poor environmental friendliness of traditional oil-water separation materials. It can be widely used in oily wastewater treatment, industrial wastewater treatment, and other fields.

The invention discloses titanium dioxide loaded trithiocyanuric acid modified loofah sponge and a preparation method and application thereof.The preparation method comprises the steps that loofah sponge is soaked in a sodium hydroxide aqueous solution and reacts for 8-24 h at the normal temperature, and alkali-treated loofah sponge is obtained; reacting the alkali-treated loofah sponge with an ethanol water solution of tetraethyl titanate at 20-100 DEG C for 12-48 hours to obtain a titanium dioxide-loaded loofah sponge; and reacting the titanium dioxide filament-loaded melon sponge, chloroacetyl chloride and an N, N-dimethylformamide solution of trithiocyanuric acid at 20-80 DEG C for 8-24 hours in sequence, taking out and drying to obtain the titanium dioxide-loaded trithiocyanuric acid modified loofah sponge. According to the preparation method of the titanium dioxide loaded trithiocyanuric acid modified loofah sponge, an organic framework does not need to be chemically synthesized; the titanium dioxide loaded trithiocyanuric acid modified loofah sponge obtained by the invention not only has excellent dye adsorption and degradation functions, but also has excellent adsorption and reduction capability on noble metal ions.

The invention relates to the technical field of oil-water separation, in particular to an oil-water separation membrane with dye adsorption and pH response as well as a preparation method and application of the oil-water separation membrane. The invention relates to an oil-water separation membrane with dye adsorption and pH response, which is a fiber membrane prepared from modified polystyrene through electrostatic spinning, and the modified polystyrene has a structure as shown in a formula (I). The number average molecular weight of the modified polystyrene is 100,000 to 200,000; the ratio range of m to n is (1-3): 1. According to the invention, methoxyl is introduced to a carboxyl modified polystyrene benzene ring, so that the flexibility of polymer molecules is optimized, the spinning stability is improved, the brittleness of the membrane is improved, the membrane has an excellent separation effect on an oil-water mixture and an oil-water emulsion, also has an excellent dye removal effect, and achieves a synergistic strengthening effect of oil-water separation and dye adsorption.

A preparation method of a gellan gum / ZIF-8 composite aerogel for dye adsorption, comprising the following steps: S1: preparing ZIF-8; S2: adding ZIF-8 into deionized water to obtain a ZIF-8 suspension A; S3: adding gellan gum into a 0.1 M potassium chloride solution, heating and stirring at 95 DEG C until completely dissolved to obtain a solution B; S4: adding the suspension A into the solution B, heating and stirring at 95 DEG C for 1.5 hours to obtain a mixed solution C; S5: pouring the mixed solution C into a corresponding mold to obtain a gellan gum / ZIF-8 composite hydrogel; S6: pre-freezing the gellan gum / ZIF-8 composite hydrogel at-18 DEG C for 12 hours, and then freeze-drying for 24 hours to obtain a gellan gum / ZIF-8 composite aerogel. The gellan gum / ZIF-8 composite aerogel has excellent adsorption effect on cationic dye malachite green.

The invention discloses an alcohol-soluble polyamide-based composite nanofiber membrane for dye treatment and also discloses a preparation method of the nanofiber membrane. The preparation method comprises the following steps: dispersing activated carbon in an alcohol-soluble polyamide solution to obtain an AC / EPA spinning solution; carrying out electrostatic spinning by using the spinning solution to obtain an AC / EPA nanofiber membrane; the nanofiber membrane is immersed in a dopamine solution for a reaction, and a PDA / AC / EPA composite membrane is obtained; the PDA / AC / EPA composite membrane is immersed in a solution formed by dimethylimidazole and cobalt nitrate for a reaction, an MOFs / PDA / AC / EPA composite membrane is obtained, then the composite membrane is immersed in a cobalt nitrate and nickel nitrate mixed solution for a reaction, and the LDHs / PDA / AC / EPA composite membrane is obtained. The method solves the problems that in an existing preparation method, a powdery adsorbent is prone to agglomeration, and the prepared material is low in adsorption efficiency, and the obtained composite membrane has the advantages of being high in dye adsorption capacity and high in efficiency.

The invention discloses a sextuple insertion anion metal organic framework material with a single crystal structure as well as a preparation method and application of the sextuple insertion anion metal organic framework material. The sextuple insertion anion metal organic framework material with the single crystal structure is formed by coordination of a ligand taking triphenylene as a main body and zinc ions under a solvothermal condition; in the presence of a conditioning agent, six groups of structures with the same coordination mode are formed by mutual interpenetration in different interpenetration modes, and have good crystallinity and stability; due to the property of the anion framework, the framework material has a promoting effect on adsorption of cationic organic dyes in drinking water, and the cationic organic dyes in water can be effectively removed.

The application belongs to the technical field of new functional materials for environmental adsorption, and provides a chitosan-porphyrin supramolecular polymer network dye adsorbent, a preparation method and application thereof. The chitosan-porphyrin supramolecular polymer network dye adsorbent is abbreviated as CSH-THPPNa, and the preparation method is as follows: porphyrin sodium is dissolved in a buffer solution with pH = 4.0, the molar ratio of chitosan to porphyrin sodium is controlled to be 1:57.2-1:400, chitosan is mixed with the prepared porphyrin sodium solution, ultrasonic treatment is carried out for 15 min, stirring is carried out for 12 h, filtration is carried out, the green solid powder obtained by filtration is vacuum dried, and the CSH-THPPNa is obtained. Raw materials are cheap and easy to obtain, the process is simple, easy and convenient to operate, and is beneficial to industrial production; the chitosan-porphyrin supramolecular polymer network dye adsorbent has the advantages of low cost, high adsorption capacity, fast adsorption rate, good adsorption selectivity, easy recycling and the like, has excellent adsorption performance on dyes in wastewater, and has a good application prospect. The chitosan-porphyrin supramolecular polymer network dye adsorbent can efficiently adsorb anionic dyes, and can also effectively separate anionic and cationic dyes.

The application discloses a deep-dyeable conductive fiber material and a preparation method thereof. The method comprises the following steps: mixing polyester chips after drying with modified fillers and conductive additives, preparing master batches through double-screw melt extrusion, then performing high-temperature spinning melt extrusion, cooling and solidifying through circular blowing, performing three-step heat drawing, finally performing oiling, network processing, and winding into a silk cake to obtain the deep-dyeable conductive fiber material. The application has the beneficial effects that the mechanical properties and dyeing properties of the fiber are significantly improved by introducing the modified fillers, and the deep dyeing effect is further optimized by adding amphoteric monomers to enhance the dye adsorption sites and interface interaction.

This invention relates to the field of water purification and water resource recycling technology, specifically to a biopolymer carbonized membrane, which is made of wheat straw powder and geopolymer. By mass fraction, the wheat straw content is 0.5%-3%, the H2O2 content is 0.1%-2%, and the carbon content is... 12 H 25 The SO4Na content is 0.01%-0.06%, the red mud content is 20%-27%, the metakaolin content is 20%-27%, and the water glass content is 41%-46%. This invention also discloses a method for preparing the aforementioned biopolymer carbonized membrane, mainly including the following steps: uniformly mixing wheat straw powder with geopolymer raw materials, curing at a constant temperature, followed by demolding, surface polishing, and high-temperature calcination to finally obtain a wheat straw / geopolymer composite carbonized membrane. Furthermore, this invention clarifies the application of this membrane in the purification of wastewater containing Congo red dye and seawater desalination. The prepared biopolymer carbonized membrane possesses both highly efficient Congo red dye adsorption performance and good interfacial evaporation performance, enabling multi-purpose use and wide application in various water treatment scenarios.

The utility model belongs to the technical field of dye separation and recovery, and particularly relates to an efficient dye separation and recovery device which comprises an equipment body, an elution solvent box fixedly installed on one side of the equipment body, a pump body fixedly installed on the top of the elution solvent box, a liquid guide pipe fixedly connected to the top of the pump body, and a cleaning liquid box fixedly installed on the other side of the equipment body. A cover plate is arranged on the top of the equipment body and provided with a feeding port. The motor, the rotating rod, the mixing rod and the filter screen plate are matched for use, so that dye waste liquid and ion exchange resin in the equipment main body can be fully mixed and stirred conveniently, dye is adsorbed on the resin to be separated from waste water, and the separated waste water can be discharged by opening the discharge port; meanwhile, an elution solvent box, a pump body, a liquid guide pipe, a flow dividing pipe and a spray head are arranged to be used in cooperation, an elution solvent in the elution solvent box can be evenly sprayed to ion exchange resin, dye on the ion exchange resin can be separated, and the dye can be conveniently collected and recycled.

The invention relates to the technical field of fabric processing, in particular to a functional recycled polyester fabric level-dyeing processing device which comprises a working box provided with a dyeing area and a heating area, tension detecting and adjusting units of the same structure are installed on the two sides of the working box respectively, and each tension adjusting unit comprises a support fixedly connected with the working box. A control system, two guide rollers, a detection roller and two adjusting rollers are arranged on the support, the guide rollers are rotationally arranged on the inner side of the support through bearings, and the two adjusting rollers are symmetrically distributed on the two sides of the detection roller. By detecting the tension change in real time and controlling and adjusting according to the detection result, the tension is stable, dyeing flaws caused by uneven tension are avoided, the stable tension enables the fabric to be uniformly stressed in a dyeing area and the dye adsorption to be consistent, and the level dyeing processing quality of the functional regenerated polyester fabric is fundamentally guaranteed.

The invention relates to the technical field of textile production intellectualization, and discloses an intelligent management system and method for canvas production. The system comprises a parameter distribution unit, a tension optimization unit, a dye adjustment unit, an exception handling unit and a quality evaluation unit. The system analyzes equipment operation data through a parameter distribution unit and dynamically distributes regulation and control parameters; and the tension optimization unit corrects tension balance accordingly. The dye adjusting unit modulates input parameters in real time by detecting dye adsorption and diffusion characteristics. And the exception handling unit monitors temperature and tension fluctuation, analyzes the influence of the temperature and tension fluctuation on the dyeing rate, and dynamically calibrates a production path and a parameter ratio. And the quality evaluation unit finally optimizes the production path and generates a report. According to the system, through multi-parameter cooperative control and dynamic calibration based on the real-time process state, the problems of parameter coupling interference and uneven dye distribution in the production process are solved, and the production stability and the dyeing uniformity and quality consistency of canvas products are improved.

The invention discloses a preparation method of polyester nylon composite fiber and synthetic leather, polyamide is modified by cationized graphene oxide, and a coaxial spinning structure is adopted, so that positive charges are given to graphene oxide to preliminarily reduce agglomeration and improve dispersity; by means of cationization, graphene oxide and negatively charged dye molecules form strong electrostatic interaction in a shell layer, so that dye adsorption uniformity and binding force are enhanced, the dyeing effect and color fastness are improved, meanwhile, graphene oxide is well dispersed in a polyamide matrix, and the mechanical strength is improved through the nanometer enhancement effect; the coaxial design of the cross-shaped core layer and the circular shell layer synergistically optimizes the stress distribution and surface characteristics of the fiber, and finally realizes multiple improvements of mechanical properties, dyeing depth and durability; the cross-shaped core layer structure provides a huge anchoring surface and a capillary channel for subsequent infiltration of polyvinyl alcohol and polyurethane, and the mechanical occlusion and chemical bonding strength between the polyurethane and the fiber is enhanced.

The invention discloses a natural dye dyeing method for a polyester fabric based on chitosan oligosaccharide modification, and belongs to the technical field of textile dyeing and finishing. Comprising the steps of polyester fabric pretreatment, alkali decrement pretreatment, chitosan oligosaccharide modification, shellac dyeing, after-treatment and industrial cost control, specifically, treatment is conducted for 50 min at the temperature of 75 DEG C through a 20 g / L sodium hydroxide solution to activate the surface of polyester, then grafting modification is conducted through a 30 g / L chitosan oligosaccharide solution, finally dyeing is conducted for 90 min at the temperature of 60 DEG C through shellac dye, and the cost is controlled through a water resource circulation system in industrial production. According to the method, the hydrophilicity and dye adsorption capacity of the polyester are improved through a chitosan oligosaccharide uniform coating layer, the dye uptake K / S value of the modified and dyed fabric reaches 1.191, the breaking strength is improved by 196%, the dry rubbing fastness reaches level 5, the UPF value reaches 21.58, and meanwhile, through parameter optimization and resource circulation, the total cost is reduced by 18% or above compared with a traditional process.

The invention provides a preparation method and application of a metal organic framework material. The preparation method comprises the following steps: carrying out first reaction on fumarate and aluminum salt in an aqueous medium to obtain a suspension; adding polyethyleneimine into the suspension, and carrying out a second reaction; after the second reaction is finished, carrying out post-treatment to obtain a polyethyleneimine modified aluminum fumarate (AlFuPEI) metal organic framework material; the fumarate and the aluminum salt are both water-soluble; the molecular weight of the polyethyleneimine is 8000 to 30000 Da; the mass ratio of the polyethyleneimine to the fumarate is 1: (5-15); the post-treatment comprises ultrasonic treatment and freeze drying. The AlFuPEI material provided by the invention has excellent anionic dye adsorption performance, and has a definite industrial application prospect in the field of deep treatment of dye wastewater.