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

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.