35results about How to "Complete pore structure" patented technology

The invention relates to a superhydrophobic metal-organic framework composite material, and a preparation method and an application thereof. The preparation method comprises the following steps: carrying out vacuum activation on a metal-organic framework material at 120-150 DEG C for 24 h, wherein the metal-organic framework material is MIL-101 (Cr) nanocrystals; adding a toluene solution of octadecylamine to the activated metal-organic framework material MIL-101 (Cr) nanocrystals, and carrying out a reaction at 333-393 K in nitrogen atmosphere for 12-24 h; and slowly cooling the obtained solution to room temperature, centrifuging the cooled solution, washing the collected solid with toluene, centrifuging the washed solid, and drying the centrifuged solid to obtain the target product. Thesuperhydrophobic metal-organic framework composite material prepared in the invention can be applied to the field of oil-water separation, and can efficiently separate multiple oil and water mixtures.

The invention relates to a Pickering high internal phase emulsion, a 3D printing porous support material prepared from the Pickering high internal phase emulsion and a preparation method of the Pickering high internal phase emulsion. The method comprises the following steps: nano-hydroxyapatite particles are used as an emulsion stabilizer, gelatin, collagen and genipin are dissolved into deionizedwater to form a continuous phase of an emulsion, an organic solvent is used as a dispersion phase, emulsification treatment is performed, a cross-linking reaction is performed to form the oil-in-water Pickering high internal phase emulsion, the continuous phase of the emulsion is fixed, finally 3D printing is performed to obtain a gel support, the solvent is volatilized to remove the dispersion phase, and drying is performed to obtain the porous support material with communicating pores and adjustable pore diameters. According to the method provided by the invention, an emulsion template method is adopted, the emulsion template method is combined with a 3D printing technology, so that the prepared porous support material has the advantages of high porosity, communicating pores, adjustablepore diameters, good biocompatibility, no toxicity or harm to organisms and the like, and has a wide application prospect in the field of biomedical materials.

The invention provides a preparation method of a plant-source long-acting mosquito-repelling composite functional filament. The preparation method comprises the steps of preparation of plant-source mosquito-repelling components, preparation of cellulose nano-porous aerogel, modification, preparation of plant-source mosquito-repelling functional master batches and spinning. SiO2 is embedded into the cellulose nano-porous aerogel, the porous structure of the cellulose nano-porous aerogel is supported, the cellulose nano-porous aerogel is not prone to collapse, the cellulose nano-porous aerogel can be soaked in a plant source mosquito repelling component solution again to be recycled after being washed for multiple times, long-acting mosquito repelling is achieved, and compared with a traditional mosquito repelling mode, the method is more environmentally friendly. After being woven into a fabric, the plant-source long-acting mosquito-repelling composite-function filament can be washed for more than 50 times and can be continuously recycled by soaking and adsorbing mosquito-repelling essential oil, odor emitted by the fabric can purify air and drive mosquitoes, a human body is effectively prevented from being bitten by the mosquitoes, and the fabric has a long-acting mosquito-repelling function. Meanwhile, the human body does not have any uncomfortable phenomena such as allergy.

The invention provides an anodized aluminum material, which can effectively corrode the anodized film through the selective adsorption reaction of gamma-chloropropyltrimethylsilane on the porous layer and the shielded layer, and the subsequent alkaline corrosion reaction The shielding layer at the bottom of the channel can effectively improve the conductivity of the anodized aluminum material.

The invention relates to a coprinus comatus mushroom dreg porous carbon adsorbent as well as a preparation method and application thereof. The preparation method comprises the steps of mixing coprinus comatus mushroom dregs with an activating agent to form mixed slurry for hydrothermal reaction; and drying and pyrolyzing the solid obtained by the hydrothermal reaction to obtain the coprinus comatus mushroom dreg porous carbon adsorbent. According to the method, an ammonium phosphate activation process is explored, and meanwhile, the promotion effect of hydrothermal coupling low-temperature pyrolysis is compared; the yield of the ammonium phosphate hydrothermal combined low-temperature pyrolytic carbon can reach 64.84%, and the adsorption capacities of the ammonium phosphate hydrothermal combined low-temperature pyrolytic carbon on benzene and dichloroethane are as high as 85.7 mg / g-biomasses and 128.8 mg / g-biomasses; compared with different pyrolysis temperatures, it is found that low-temperature pyrolysis activation is easier to maintain a complete carbon skeleton and retain heteroatoms; and hydrothermal carbonization has an immobilization effect on the carbon skeleton, N / P heteroatoms can be effectively retained, the carbon skeleton can be effectively protected in the pyrolysis activation process through the cross-linking effect of ammonium phosphate, and finally the high carbon yield is obtained.

The invention provides a preparation method of an alloy electroplating material with the high bonding force. According to the preparation method, a shielding layer at the bottom of an anodic oxidationfilm is removed, an aluminum metal base material is exposed, then a zinc transition layer and a zinc-nickel electroplating layer are sequentially electroplated, and the bonding force of the base material and the plating layer is finally effectively improved.

The invention provides a method for removing a shielding layer in an anodized aluminum pore channel. Through selective adsorption reaction of gamma-chloropropyl trimethylsilane with a porous layer andthe shielding layer and subsequent alkaline corrosion reaction which can effectively corrode the shielding layer located at the bottom of the anodized film pore channel, the electrical conductivity of an anodized substrate is effectively improved.

The invention discloses the application of a porous ion-conducting membrane supported by an organic skeleton copolymer in a liquid flow battery. This type of film is prepared by dissolving the soluble organic skeleton copolymer precursor A in the casting solution, coating it on the support, and undergoing phase inversion in a non-solvent containing the organic skeleton copolymer precursor B. The film is formed During the process, precursor A and precursor B in-situ generate organic framework copolymers in the film. The prepared porous ion conduction membrane containing the organic framework copolymer is processed, dried and pickled to prepare the porous ion conduction membrane supported by the organic framework copolymer. The designed and prepared porous ion-conducting membrane has good battery performance in the flow battery, especially the all-vanadium flow battery.

The invention provides a composite material with high bonding force. A shielding layer at the bottom of an anodized film, an aluminum metal substrate is exposed, and then single-metal electroplating treatment is carried out, so that bonding of an anodized substrate and a coating is effectively improved.

The invention provides a method for modifying an all-silicon Beta molecular sieve containing a three-membered ring and a Lewis acid, belonging to the field of petrochemical industry. Firstly, the Beta molecular sieve with a Si / Al ratio higher than 10 is used as the raw powder, and then it is completely dealuminated by a nitric acid solution, and then deionized water is used to balance the acid-base of the dealuminated thick Beta molecular sieve to obtain a full-silicon The Beta molecular sieve is then dried, and then put into a muffle furnace for roasting to obtain an all-silicon Beta molecular sieve containing a three-membered ring and a Lewis acid. This method avoids the use of fluorine-containing mineralizers in in-situ synthesis, and is environmentally friendly; the obtained all-silicon Si-Beta molecular sieve contains a three-membered ring structure and effective Lewis acid sites, and can be used for the isomerization of olefins. The steps are simple, the preparation is quick and environmentally friendly.

The invention relates to a method for synthesizing an SAPO-31 molecular sieve nanocrystal from double templates. The method comprises the following steps: successively adding a phosphoric acid solution with a mass fraction of 85%, aluminum isopropoxide with a mass fraction of 24.8%, a silica aerosol, a mixed solution of di-n-butylamine with a mass fraction of 98.3% and a di-n-propylamine with a mass fraction of 95% and an HF solution with a mass fraction of 40% into deionized water and carrying out full stirring at a speed of 400 to 1000 r / min for 0.5 to 3 h so as to obtain initial gel; and placing the initial gel in a crystallization kettle, carrying out crystallization at a temperature of 130 to 200 DEG C for 12 to 36 h, carrying out cooling to room temperature, then carrying out centrifugal filtration and washing, placing an obtained substance in a drying box for drying at a temperature of 100 to 200 DEG C for 8 to 36 h and roasting the dried substance in a muffle furnace at a temperature of 500 to 650 DEG C for 2 to 12 h so as to obtain an SAPO-31 molecular sieve. The method has shortened crystallization time; and the molecular sieve has strongly adjustable acidity and high acid site density.

The invention provides a method for preparing an alloy electroplating material with high binding force. By removing the shielding layer at the bottom of the anodic oxide film to expose the aluminum metal substrate, and then sequentially electroplating a zinc transition layer and a zinc-nickel electroplating layer, the final effective improvement of the substrate is achieved. Bonding force with coating.

The invention discloses three-dimensionalgraphene composite aerogel. High-molecular material nano fiber with a biomass polysaccharide structure is compounded with oxidized graphene through a surface electrostatic-force effect, and then the composite aerogelis prepared by utilizing hydrazine hydrate reduction and a method for high-temperature pyrolysis in an inert atmosphere. The invention further discloses a preparation method of the three-dimensionalgraphene composite aerogel. The method for preparing the three-dimensionalgraphene composite aerogel is simple, easy to operate, large in specific surface area, uniform in pore size distribution and good in electrical conductivity, and the chemical reactivity is improved.

The invention provides a preparation method of a high bonding force coating taking anodic alumina as the base material. A shielding layer at the bottom of an anode oxide film is removed to expose thealuminum metal base material, and then, electroplating monometallic treatment is carried out, and finally, combination of the anodic oxidation base material and the coating is effectively improved.

The invention relates to a superhydrophobic metal-organic framework composite material and a preparation method and application thereof. The metal-organic framework material is vacuum activated at 120-150°C for 24h. The metal-organic framework material is MIL-101(Cr) nanocrystals; in the activated metal-organic framework material MIL-101(Cr) nanocrystals, add The toluene solution of octadecylamine was reacted at 333-393K for 12-24h under the protection of nitrogen; slowly cooled to room temperature, centrifuged, and the collected solid was washed with toluene, centrifuged, and dried to obtain the target product. The superhydrophobic metal-organic framework composite material prepared by the invention can be applied to the field of oil-water separation, and can efficiently separate various oil-water mixtures.

The invention discloses a method for preparing a large-pore mesoporous molecular sieve. According to the method, a mesoporous molecular sieve with different topological structures is synthesized by using the methods reported in literature, then a certain amount of mesoporous molecular sieve raw powders or roasting samples are mixed with a solution containing small molecule organic ammonium with a certain concentration, and the large-pore mesoporous molecular sieve is prepared through controlling the crystallization temperature and crystallization time by using hydrothermal synthesis. The synthesis method is simple and has high repeatability, and the mesoporous molecular sieve finally obtained has higher hydrothermal stability; and in addition, the synthesis method does not need additional silicon sources, the synthesis cost is reduced, and the method is an environment-friendly synthesis method.

The invention relates to a preparation method of an antigen-removing biological bone. The preparation method comprises bone block pretreatment, partial deproteinization treatment, irradiation treatment, organic matter removal, EDC / NHS crosslinking and drying sterilization. Bone particles are treated by irradiation to make proteins degenerated, then a mixed solution of a surface active agent and hydrogen peroxide is used for treating the irradiated bone particles, followed by a hypochlorite solution and a hydrogen peroxide solution are used for treating, and the deproteinized biological bone is obtained after ethylene oxide sterilization. The prepared bone material has a three-dimensional porous structure, has good capillary adsorption, can adsorb osteoblasts and protein factors after being implanted in bodies, and induces new bone formation; the bone material allows antigen components to be effectively removed, retains a part of collagen, and has better biocompatibility; and the bone material allows hydroxy apatite to have the crystallization degree of lower than 15% and exist in a weak crystallization morphology, has no other crystal phases, allows the carbonate content to be 4%-6%, has relatively high mechanical strength and good degradation, and is suitable for a repairing operation material for non load-bearing part bone coloboma.