104 results about "Dye adsorption" patented technology

The invention discloses an application of a microporous and mesoporous metal organic framework microsphere material in organic dye and heavy metal wastewater. According to the invention, mesoporous spheres formed by self-assembly of a block copolymer are used as objects, and regular and highly dense mesoporous micron-sized particles of a self-assembled amphiphilic block copolymer (PS-b-PAA) in a selective solvent mixture are used as a template; uiO-66-NH2 and ZIF-67 micron-sized microspheres which are formed by mutual growth of metal-organic framework nanocrystals and have two pore diameters of micropores and mesopores at the same time are produced, and larger carrying capacity is obtained, so that adsorption separation is more efficiently realized. The adsorbent is respectively used for dye adsorption and heavy metal ion adsorption, and the adsorption performance and mechanism of the adsorbent are explored. The metal organic framework microspheres with both micropores and mesopores are used as an adsorbent, and a simpler, more convenient and novel method is provided for adsorption.

The invention discloses a nanocellulose composite aerogel, a preparation method thereof and application of the nanocellulose composite aerogel in wastewater dye adsorption, and belongs to the technical field of water treatment. The preparation method comprises the following steps: blending nano cellulose, a cross-linked polymer and a nano reinforcing material under the assistance of ultrasonic waves to form stably dispersed composite sol; injecting the composite sol into a mold, carrying out pre-freezing, and then carrying out vacuum freeze drying; and immersing the aerogel obtained after freeze drying into a cross-linking agent solution for post-crosslinking treatment, and drying to obtain the nano-cellulose composite aerogel. The nano-cellulose composite aerogel provided by the invention has the beneficial effects that efficient adsorption of cationic dyes and anionic dyes is realized at the same time, and the nano-cellulose composite aerogel is suitable for advanced treatment of printing and dyeing wastewater.

The invention discloses a preparation method and application of self-crosslinking hydrogel containing a capsaicin functional structure, and belongs to the technical field of dye adsorption materials. The capsaicin functional structure monomer is introduced into an acrylic acid system, so that the self-crosslinking of the hydrogel is realized, and meanwhile, the adsorption performance of the hydrogel is remarkably improved; mono-substituted capsaicin functional structure monomers containing carboxyl and sulfonic acid groups are used as components, a disubstituted capsaicin functional structure monomer with polyhydroxy and carboxyl is used as a cross-linking agent, the self-crosslinking hydrogel with multiple adsorption sites is successfully constructed through free radical polymerization, and the adsorption capacity and efficiency of the hydrogel are greatly improved. The hydrogel-based carbon material is obtained by carbonizing the self-crosslinking hydrogel containing the capsaicin functional structure, the adsorption performance of the hydrogel material is further improved, the obtained hydrogel-based carbon material can be desorbed and recycled in ethyl alcohol, and the service life of the hydrogel-based carbon material is prolonged. And the problem of secondary pollution of the existing hydrogel material in the acid / alkali desorption process is effectively avoided.

The invention provides a dyeing machine automatic control method and system combined with dyeing residual liquid concentration monitoring, and relates to the technical field of automatic control, and the method comprises the steps: obtaining the dyeing residual liquid concentration monitored by a dyeing machine in real time; constructing a residual concentration change curve according to the component concentration difference between the dyeing residual liquid concentration and the input dyeing liquid concentration; according to the sequential relationship of the residual concentration change curve, identifying and controlling a switching node; comparing the component concentration difference of the residual concentration change curve with a target residual liquid concentration range of a control switching node, and compensating the residual concentration difference by using a dyeing control parameter to obtain a compensation control parameter; and dynamically controlling the dyeing machine according to the compensation control parameters. The technical problems that the control strategy is too simple and the optimal dyeing effect cannot be achieved due to the fact that a traditional dyeing machine is generally operated only according to a preset program and is difficult to quickly adjust according to the real-time dye adsorption condition in the dyeing process are solved.

The invention belongs to the technical field of polymer adsorbent materials, and particularly relates to an ionic polymer adsorbent material containing sulfonic groups and triazinyl, a preparation method and application thereof. A sulfonic acid group is introduced to a molecular structure unit of the nitrogen-rich polymer, and the specific surface area and the ion capacity of the polymer are controlled by adjusting the content of benzidine disulfonic acid; along with the increase of the proportion of benzidine disulfonic acid, the ion capacity of an adsorbent is gradually increased, the specific surface area is gradually reduced, the invention also discloses application of the ionic polymer containing sulfonic acid and triazinyl structure in dye adsorption, and the prepared polymer has high specific surface area, heat-resistant stability, adsorption performance and adsorption regeneration performance.

The invention discloses a preparation method and application of active cationic chitosan nanoparticles, which comprises the following steps: reacting a low-molecular chitosan triethylamine hydrogen sulfate ionic liquid ([(C2H5) 3NH] HSO4) solution with an aldehyde compound ethanol solution to form Schiff base protection on chitosan C2-site amino, and then reacting with 2, 3, 5, 6-tetramethyl-4-piperidine-2-one to obtain the active cationic chitosan nanoparticles. The preparation method comprises the following steps: carrying out nucleophilic substitution reaction on chitosan C6 in the presence of a basic catalyst by using 2, 3-epoxypropyl trimethyl ammonium chloride, then adding a chemical initiator, carrying out grafting reaction on chitosan C3 and acrylic acid, and then removing Schiff base protection on chitosan C2. Carboxylate anions of acrylic acid and cations of chitosan are subjected to cross-linking self-assembly through a hydrothermal reaction, and the chitosan nanoparticles which are high in stability, small in particle size, uniform in distribution and efficient and lasting in function are obtained. The prepared nanoparticles are high in reaction activity, contain a large amount of quaternary ammonium salt, amino dication groups and carboxyl groups, and have wide application prospects in the fields of dye adsorption, heavy metal adsorption, textile function finishing and the like.

The invention provides a Zn-MOF material, a preparation method thereof and application of the Zn-MOF material in Congo red dye adsorption, and relates to the technical field of metal organic framework materials. The preparation method provided by the invention comprises the following steps: reacting 2-methylimidazole with 3, 6-dichloropyridazine in an alkaline solvent environment to generate 3, 6-bis (2-methylimidazole) pyridazine; the preparation method comprises the following steps: mixing and coordinating 3, 6-bis (2-methylimidazole) pyridazine, isophthalic acid and a zinc source to prepare a Zn-MOF material; the Zn-MOF material prepared by the preparation method disclosed by the invention can be used for effectively adsorbing Congo red.

The invention belongs to the technical field of polymer composite materials, and relates to a multilayer solar interface evaporator and a preparation method thereof. The evaporator comprises a photo-thermal layer, a connecting layer and a supporting layer, the photo-thermal layer combines biomass material-carbonized loofah powder with high polymer material polyacrylonitrile, a photo-thermal film with photo-thermal conversion capacity is prepared through the electrostatic spinning technology, and polyaniline grows on the surface of the photo-thermal film in situ so as to improve the photo-thermal efficiency; the connecting layer adopts a loofah sponge fiber skeleton, so that the layers are tightly combined; the supporting layer selects polyamide 6 as a foaming material and bamboo charcoal powder as a functional filler, and the polyamide 6-bamboo charcoal powder foam supporting layer is prepared by utilizing a solution foaming technology and has the functions of heat insulation, water delivery and dye adsorption. The photo-thermal layer and the supporting layer are integrated through the connecting layer to prepare the multi-layer solar interface evaporator, efficient photo-thermal evaporation, high dye adsorption rate and long cycle life are achieved, and the multi-layer solar interface evaporator has the advantages of being environmentally friendly, low in cost and stable in performance and has application prospects in the fields of seawater desalination and industrial wastewater treatment.

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 invention discloses a preparation process of ready to dye ready to dye and easy to dye easy to dye hair, and particularly relates to the technical field of hair treatment chemistry, the process is realized through three stages of pretreatment, modification treatment and neutralizing and shaping which are sequentially executed, the hair is immersed in a solution containing an alkaline reagent system and a bioactive peptide structure enhancer, and then the hair is soaked in a solution containing an alkaline reagent system and a bioactive peptide structure enhancer; at a specific temperature, synchronously opening hair cuticles and repairing keratin disulfide bond damage; under the catalysis of a rare earth metal complex catalyst, a permanent cationization three-dimensional network is formed through covalent grafting of an amphiphilic quaternary ammonium salt compound and a keratin nucleophilic site; a neutralizing solution containing an organic acid system and reactive siloxane is adopted to close hair cuticles, an ionic bond anchored hydrophobic protective film is formed, a biological peptide synergistic repair mechanism effectively overcomes keratin damage caused by traditional alkali treatment, and the completeness of the hair cuticles is remarkably improved; a high-density permanent cation site is constructed through rare earth catalytic covalent grafting, so that the dye adsorption strength is improved, and the problem that hair dyeing process damage and durability are difficult to consider at the same time is solved.

The invention belongs to the technical field of preparation and application of metal organic framework adsorption materials, and particularly relates to a Ti-MOF-based nanometer material, a preparation method thereof and application of the Ti-MOF-based nanometer material in methylene blue dye adsorption, and a hierarchical pore Ti-MOF-based nanometer methylene blue adsorbent rich in oxygen vacancies is constructed by means of a temperature regulation and control ligand pyrolysis strategy. Adsorption performance tests show that the adsorbent has high adsorption capacity and high adsorption rate on methylene blue, due to the fact that hierarchical pores in the adsorbent promote diffusion and mass transfer of methylene blue, and oxygen vacancies enhance electronegativity of the surface of the adsorbent and provide more adsorption active sites.

A preparation method of a Cu-Co bimetallic semi-crystalline material and its application in dye adsorption belong to the field of nanomaterial and environmental material preparation. The invention comprises the following steps: weighing a Cu salt and a Co salt of the same type in a mass ratio of 1:3 to 3:1, mixing them in an ethanol solution, and ultrasonically promoting dissolution and thorough mixing of the two, which is named solution A; adding an organic ligand into deionized water, and using an auxiliary reagent under ultrasonic conditions to adjust the concentration of the organic ligand to 0.2 mol / L, which is named solution B; mixing solutions A and B in a volume ratio of 1:2, stirring under uniform stirring until the mixture is in a flowable liquid state, which is named substance C; collecting substance C by centrifugation and drying it to obtain a dry Cu-Co bimetallic semi-crystalline material; the preparation method of the Cu-Co bimetallic semi-crystalline material of the invention is simple, rapid, and has low energy consumption; the synthesized Cu-Co bimetallic semi-crystalline material has a multi-element pore structure, a large specific surface area, and multi-element active sites, and has a strong adsorption capacity.

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 preparation method and application of a metal-organic dye adsorbent based on sulfonyl calixarene, Ni (II) is used as a metal node, and the metal-organic dye adsorbent is prepared through a solvothermal directional assembly strategy by utilizing the synergistic coordination effect of a dicarboxylic acid ligand 4, 4 '-dithiobisbenzoic acid and p-tert-butylsulfonyl calix [4] arene (H4TBSC). The sulfonyl calixarene-based structure metal-organic dye adsorbent with definite inner and outer cavity partitions is successfully constructed. The adsorption material comprises a central large cavity and two symmetrically distributed peripheral cavities, and the special structure enables the adsorption material to show excellent selective adsorption performance on Congo red (CR) dye molecules. And efficient separation of a Congo red / rhodamine B (RhB) mixed system can be realized through a molecular size screening effect. The invention provides a new thought and method for developing a multifunctional supramolecular adsorption material based on dynamic coordination engineering, and has a wide application prospect in the fields of dye separation and wastewater treatment.

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.

The invention belongs to the technical field of grinding, polishing and surface fluid coating in operation transportation, and particularly relates to a steel pipe interval warning paint coloring method which is implemented on the basis of equipment and comprises the steps of 1) clamping and feeding, 2) first-time coloring and 3) second-time coloring. The equipment comprises two longitudinal fixed sliding rails, and a first painting box assembly and a second painting box assembly which are spaced in the longitudinal direction are arranged between the two fixed sliding rails; the first painting box assembly and the second painting box assembly respectively comprise a transverse painting box, a plurality of dye adsorption blocks are arranged on the painting boxes at intervals in the transverse direction, and the upper surfaces of the dye adsorption blocks are flush and exposed out of the painting boxes; the dye adsorption blocks of the first painting box assembly and the second painting box assembly are staggered 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 symmetrical movable supporting frames arranged on the two fixed sliding rails in a one-to-one mode. According to the method, the problem that the interval warning paint on the outer surface of the pipe fitting is inconvenient to color can be avoided, and the process of painting the interval warning paint on the outer surface of the pipe fitting is efficiently completed.

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 invention provides a preparation method of nitrogen and phosphorus double-doped magnetic hydrothermal carbon, which comprises the following steps: drying an aquatic biomass precursor, crushing to obtain biomass powder, cleaning the powder, and drying to be absolutely dry; the preparation method comprises the following steps: mixing biomass powder, a nitrogen-phosphorus compound and water, carrying out hydrothermal treatment, cleaning and drying to obtain a hydrothermal carbon precursor; mixing the hydrothermal carbon precursor with a solution containing ferrous iron and ferric iron, and magnetically stirring; in the stirring process, the time and the temperature are controlled; after stirring is completed, adjusting the pH value with an alkaline compound to obtain hydrothermal carbon; the hydrothermal carbon is washed to be neutral and then dried to be absolutely dry, and the nitrogen and phosphorus double-doped magnetic hydrothermal carbon needed by the target is obtained. The invention also provides the nitrogen and phosphorus double-doped magnetic hydrothermal carbon prepared by the method and application of the hydrothermal carbon as a dye adsorbent material. The prepared hydrothermal carbon has the advantages of being good in adsorption performance, convenient to recycle, low in carbon, environmentally friendly, low in cost and the like.

The application discloses a new route for purifying regenerated DMT, and the application is characterized in that layered double hydroxide and porous dopamine are used as adsorbents, tannic acid is used as a binder, and the adsorbents are loaded on a cellulose membrane to prepare a filter membrane with a dye adsorption function; meanwhile, an industrial filter membrane is combined to form a multi-layer series filter system, and regenerated DMT is subjected to primary purification; then, the melt crystallization and rectification coupling technology is adopted to perform secondary purification on the regenerated DMT, so that high-purity and high-quality regenerated DMT is formed, the application field of the regenerated DMT is expanded, and a foundation is laid for high-value utilization of downstream regenerated DMT. The application effectively solves the technical problem of the difficulty in purifying the regenerated DMT, and will strongly promote the application and development of the regenerated DMT.

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 utility model discloses environment-friendly and energy-saving heat sublimation transfer paper which comprises a transfer paper body, a dye moisture absorption layer is arranged in the transfer paper body, a heat sublimation dye adsorption layer is arranged below the dye moisture absorption layer, an elastic layer is arranged below the heat sublimation dye adsorption layer, and the elastic layer is arranged below the heat sublimation dye adsorption layer. An anti-permeation coating layer is arranged below the elastic layer, a high-temperature-resistant coating layer is arranged below the anti-permeation coating layer, and a bearing layer is arranged below the high-temperature-resistant coating layer. By means of the structure, the problem that patterns on thermal dye sublimation transfer paper cannot achieve an ideal effect directly due to the fact that the permeability resistance of the paper is too low when some thermal dye sublimation transfer paper is used for ink jetting can be solved, the situation that the thermal dye sublimation transfer paper is scrapped, and the cost is directly increased is avoided, and the thermal dye sublimation transfer paper can be used for ink jetting. The thermal dye sublimation transfer paper can solve the problem that part of thermal dye sublimation transfer paper is poor in high temperature resistance, avoids flanging of the thermal dye sublimation transfer paper, and avoids the problem that manpower and material resources are increased.

The invention discloses sisal fiber-based fluorescent carbon dots and a preparation method and application thereof in dye adsorption, and the preparation method comprises the following steps: step 1, adding sisal fibers into a mixed solution composed of sodium hypochlorite, TEMPO, sodium bromide and deionized water, adjusting the pH value to 9-10, reacting at room temperature for 4 hours, then quenching the reaction with ethanol, washing the obtained mixture with tap water to neutralize, and drying to obtain sisal fiber-based fluorescent carbon dots; washing with deionized water, and drying to obtain carboxylated sisal fiber; step 2, taking the carboxylated sisal fibers as a carbon source, adding polyethyleneimine as a nitrogen source, and performing microwave treatment to obtain the sisal fiber-based fluorescent carbon dots. According to the invention, CDs are grown on SF in situ by a simple microwave method, the SF-N-CDs material with high strength, rich functional groups on the surface and high pore structure is obtained, and the adsorption capacity of the SF-N-CDs material on methyl blue dye can be remarkably improved.

The invention discloses a method for preparing a straw-based broad-spectrum adsorption material in a mechanochemical environment-friendly manner, and belongs to the field of biomass materials / environmental governance. The problems that an existing physical adsorption method is low in adsorption capacity and poor in adsorbability to ionic dyes, a chemical oxidation method generates by-products to cause secondary pollution, and a biological treatment method is poor in tolerance to high-concentration dyes are solved. The problems that an original pore structure of an existing biomass adsorption material is blocked, surface functional groups are deficient, the adsorption capacity on organic dye and heavy metal ions is low, toxic and harmful solvents are used in the biomass modification process, the production process is complex, the post-treatment process is tedious, and high-temperature and high-pressure conditions are needed are solved. The method comprises the following steps: 1, carrying out high-energy grinding on phosphorus pentoxide, N, N, N-trimethylglycine and straws; and 2, adjusting the pH value. The method is used for mechanochemical green preparation of the straw-based broad-spectrum adsorption material.

The application provides a Zn-MOF material and a preparation method and application thereof in Congo red dye adsorption, and relates to the technical field of metal organic framework materials.The preparation method comprises the following steps: 2-methyl imidazole is reacted with 3,6-dichloropyridazine to generate 3,6-bis(2-methyl imidazole) pyridazine in an alkaline solvent environment; and the Zn-MOF material is prepared by mixing and coordinating 3,6-bis(2-methyl imidazole) pyridazine, isophthalic acid and a zinc source.The Zn-MOF material prepared by the application can effectively adsorb Congo red.

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.