48results about How to "Regular and orderly structure" patented technology

The invention relates to a method for preparing a collagen protein / silica membrane double-layer stent. According to the invention, a collagen sponge with a porous network structure is prepared through different crosslinking methods, and a layer of silica membrane with different thicknesses is coated on the collagen sponge again, then the collagen protein / silica membrane double-layer stent is prepared. The collagen protein / silica membrane double-layer stent obtained in the invention has a good effect in an application of being used as an artificial skin stent material, and two layers of the material have different functions, namely the outer layer of the silica membrane has higher mechanical strength to be capable of supporting and protecting a wound, and a good gas-liquid permeability performance to be capable of effectively preventing fluid loss, and a moderate density performance to be capable of preventing bacterial infections and providing a moister environment for wound repair; the inner layer of the collagen sponge can effectively promote cell proliferation and differentiation, delay wound contraction and accelerate wound healing.

The invention relates to a method for preparing monodisperse mesoporous bioactive glass microspheres through a template method, belonging to the field of biomedical materials. A silicon source, a phosphorus source, a calcium source, an iron source, an alkali metal or alkaline-earth metal source is adopted as a raw material, a triblock copolymer or alkyl quaternary ammonium salt type cation is taken as a surfactant, and an in-situ sol-gel method is performed in a three-dimensional ordered macroporous polymer or a carbon template to synthesize the ordered mesoporous bioactive glass microspheres. The bioactive glass microspheres prepared according to the invention have the characteristics of good biocompatibility, biodegradability, ordered mesoporous structure, higher specific surface area, magnetism, monodispersibility of particles, environmental stability and the like; and in comparison with various medicament delivery carrier materials which are extensively researched currently, the bioactive glass microspheres have more comprehensive advantages and further have broad application prospects as novel medicament controlled release carrier materials.

The invention particularly relates to a stainless steel surface nano-pore array film and a preparation method thereof. The technical scheme is that: stainless steel treated by surface pretreatment is used as an anode and is placed in a phosphate buffer solution to perform electrochemical anodic oxidation treatment; the time for the electrochemical anodic oxidation treatment is 0.1-4 h; a nano-pore array film is obtained on the treated stainless steel surface; the voltage for the electrochemical anodic oxidation is 10-80 V, and the temperature for the electrochemical anodic oxidation is -5 to 40 DEG C. The preparation method of the invention is simple, effective, environment-friendly, and low in cost; the stainless steel surface nano-pore array prepared by the method has a structured and ordered structure, a high density, a controllable pore diameter and pore depth, and no other impurity elements intervened, is firmly combined with the substrate, and has strong corrosion resistance andhigh hardness.

The invention particularly relates to a pure iron based surface Fe3O4 nano-column array and a preparation method thereof. The technical scheme of the invention is as follows: the method comprises the steps: carrying out anodic oxidation treatment on pure iron, which is subjected to surface pretreatment, in an ammonium fluoride-water-ethanediol system electrolyte; taking out, cleaning and drying through blowing; heating to the temperature of 400-800 DEG C from room temperature in a hydrogen atmosphere at the heating rate of 5-15 degrees centigrade per minute, carrying out heat preservation for 3-8 hours, and carrying out furnace cooling naturally, thereby preparing the pure iron based surface Fe3O4 nano-column array. The method is characterized in that in the ammonium fluoride-water-ethanediol system electrolyte, the mass percentage of ammonium fluoride is 0.2-0.5%, and the volume percentage of water is 1.5-3%; the anodic oxidation treatment is carried out under the conditions that the voltage is 20-60 voltage, the temperature is 20-60 DEG C and the time is 0.05-1 hour. The preparation method has the characteristics of simple process, environmental friendliness and low cost; the prepared pure iron based surface Fe3O4 nano-column array has the advantages that the structure is regular and orderly, the composition is uniform, the density of nano-columns is high, the specific surface area is large, the bonding with substrates is tight, and other impurity elements are not involved.

The invention discloses a carbon film obtained by self assembly of graphene oxide or its derivatives and a preparation method thereof, and relates to a preparation method for a highly ordered carbon film. The objective of the invention is to solve the problems existing in the prior art that the combination between a carbon film and a substrate is poor, the preparation technology is complex, the cost is high, and the thickness of carbon films is difficult to control in the process of preparation. The carbon film provided in the invention uses graphene oxide or its derivatives as the raw material and is obtained through the process of self assembly. The carbon film is prepared by the following steps: dispersing graphene oxide or its derivatives in a solvent so as to obtain a solution, immersing a substrate into the solution and allowing the solution to stand at a constant temperature for assembly, wherein the temperature is in a range of 50 to 100 DEG C. The carbon film prepared in the invention has smooth surfaces, strong bonding force to the substrate and good light transmittance and mechanical properties; the modulus of the carbon film is 80 to 120 GPa, and the hardness is 7 to 9 Gpa; the carbon film is orderly orientated along the surface of the substrate, and the thickness of the carbon film is 10 nm to 2 mu m. The preparation process is controllable and concise and produces products with controllable thickness. The carbon film provided in the invention has broad application prospects in such fields as electrode materials, electronic chips, solar cells and high efficient catalysis.

The invention relates to a stainless steel surface three-dimensional nanocarbon film and a preparation method thereof. According to the technical schem, the preparation method comprises the following steps: firstly, performing electrochemical anode oxidation treatment on stainless steel in a sodium dihydrogen phosphate solution, wherein the surface of the stainless steel is pretreated; then under a stirring condition, placing the stainless steel subjected to electrochemical anode oxidation treatment in a mixed solution of dopamine and trihytdroxy methyl-aminomethane for 4-24 hours, taking out and cleaning; then raising to 500-800 DEG C from a room temperature at a temperature raising rate of 5-15 DEG C / min in an argon atmosphere, insulating heat for 3-10 hours, and naturally cooling with a furnace to obtain the stainless steel surface three-dimensional nanocarbon film. The stainless steel surface three-dimensional nanocarbon film has the characteristics of simple process, environment friendliness and low cost; and the stainless steel surface three-dimensional nanocarbon film is regular and ordered in structure, uniform in components, high in nano hole density, large in carbon film specific surface area, controllable in pore diameter, pore depth and carbon film thickness, and compact in combination with a base material, and does not involve other impurity elements. According to the stainless steel surface three-dimensional nanocarbon film, the stainless steel corrosion resistance performance, the high temperature resistance, the electrochemical sensing performance and the biological medicine performance can be improved.

The invention provides a preparing method of a graphene material of an ordered structure. The preparing method includes the following steps that an oxidized graphene solution and an electrolyte water solution are mixed to obtain a mixed solution; the mixed solution obtained in the previous step is filtered to obtain the mixed graphene material under the action of an outside pressure field; the mixed graphene material obtained in the previous steps is freeze-dried, and in vacuum or under the protective atmosphere, the mixed graphene material obtained in the previous steps is annealed to obtain the graphene material of the ordered structure. By adopting electrolyte, the graphene structure is ordered and controllable on the basis of preparing the graphene macroscopic material; as the filtering mode is used, the arranging mode of graphene microchips can be adjusted. The arranging mode of graphene microchips in the assembling process can be effectively controlled to prepare the graphene macroscopic material in an adjusting mode, and the graphene macroscopic material of the ordered microstructure is obtained.

The invention particularly relates to antibacterial stainless steel and a preparing method thereof. According to the technical scheme of the antibacterial stainless steel and the preparing method thereof, stainless steel obtained after surface pretreatment is put into a dopamine buffer solution to be deposited for 0.1 h to 72 h under the condition with the temperature ranging from -5 DEG C to 40 DEG C; then the obtained stainless steel is put into a solution containing titanium ions to be deposited for 0.1 h to 6 h; and finally the obtained stainless steel is put into a solution containing silver ions to be deposited for 0.1 h to 6 h, and therefore the antibacterial stainless steel is obtained. The concentration of the dopamine buffer solution ranges from 0.01 mol / L to 1 mol / L, the concentration of the solution containing the titanium ions ranges from 0.001 mol / L to 1 mol / L, and the concentration of the solution containing the silver ions ranges from 0.001 mol / L to 1 mol / L. By means of the antibacterial stainless steel and the preparing method thereof, the technology is simple, environment friendliness is achieved, and the cost is low; the surface antibacterial nanometer film layer structure of the antibacterial stainless steel prepared through the method is well-defined and orderly, is firmly combined with a base material, is high in corrosion resistance and hardness and has good antibacterial performance both under the illumination condition and the non-illumination condition.

The invention discloses a mesoporous carbon material loaded cobalt-based catalyst and a preparation method thereof, and belongs to the technical field of metal catalysts. The preparation method of thecobalt-based catalyst comprises the steps: (1) dissolving Co(NO3)2.6H2O in an absolute ethyl alcohol solution; (2) immersing a mesoporous carbon material GMC into the solution obtained in the step (1), and evaporating in a rotary evaporator to obtain a mixture; and (3) putting the mixture obtained in the step (2) into a drying oven, and drying; and calcining to obtain the catalyst. The catalyst provided by the invention is higher in graphitization degree, more uniform in CoO particle dispersion, higher in CO conversion rate, lower in CO2 generation rate and better in C5+ selectivity.

The invention discloses an integral separating dielectric of polymer and making method, which has regular three-dimensional frame structure constituted by polymer frame and through-out hole, wherein the nanometer grade middle-hole is formed on the surface of the polymer frame and / or in the polymer frame; the through-out hole is between 0. 1um and 10um and the middle hole is between 0nm and 50 nm; the frame size is 0. 2-2um. The invention has regular and sequent dielectric structure to be separated after doing chemical decoration for frame surface, which has huge applying potential in the macromolecular separating and purifying and solid phase extracting domain.

The invention provides a g-C3N4 / H-S-TiO2 base nano tube array and a preparing method and application thereof, and belongs to the technical field of nano composite materials. The specific preparing method comprises the steps that on a titanium containing metal base body, a nano tube ordered array is prepared through an anodic oxidation method; the prepared nano tube ordered array is subjected to crystallization, vulcanization and hydrogenation treatment, and an H-S-TiO2 base nano tube array is obtained; the prepared H-S-TiO2 base nano tube array and g-C3N4 are compounded, and the g-C3N4 / H-S-TiO2 base nano tube array is obtained. The ordered nano tube array composite material structure is orderly and tidy, the specific surface area is large, the quantum efficiency is high, the wavelength range for sunlight absorption and utilization is obviously enlarged, the photoelectric conversion efficiency can be obviously improved, and very wide application is achieved in solar batteries, photocatalysis and other aspects. If the ordered nano tube array composite material serves a photoelectrode, the advantages of the nano tube ordered array can be brought into full play, and a thought is provided for design, development and application of the high-performance photoelectrode.

The invention relates to an oligopeptide phase reversal chromatography stationary phase and a preparation method thereof. The preparation method adopts 'link chemistry' as a bonding reaction method to bond oligopeptide molecules and comprises the following steps: firstly, introducing terminal alkynyl on a silica gel surface; and then, taking methanol, acetonitrile, dimethyl sulfoxide or a mixture of the solvents as a reaction solvent to bond oligopeptide modified with azide groups on the silica gel surface, thereby obtaining the oligopeptide phase reversal chromatography stationary phase. The oligopeptide phase reversal chromatography stationary phase has orderly structure and single reaction site; moreover, the structure of the stationary phase introduces triazole rings, urea bonds, benzene rings, peptide bonds and ester groups to generate multiple kinds of acting force, such as hydrogen-bonding action, electrostatic interaction, Pi-Pi action, dipole-dipole interaction, hydrophobic interaction and the like, thereby realizing orthogonal separation on complex compositions in a two-dimensional structure constructed with C18; and 'link chemistry' is adopted as the bonding reaction method to realize immobilization of high selectivity and high conversation efficiency under moderate conditions.

The invention discloses a preparation method for a poly(melamine-formaldehyde) polymeric microsphere three-dimensional template material. The preparation method comprises the following steps: uniformly mixing melamine and formaldehyde, in a mol ratio of 1: 10-50, in 100 mL of deionized water, then slowing heating the obtained mixture to 30 to 85 DEG C for prepolymerization for 20 to 60 min; then adding a proper amount of formic acid or acetic acid drop by drop for a precipitation reaction for 40 to 80 min and subjecting a reaction product to centrifugation and washing so as to obtain poly(melamine-formaldehyde) polymeric microspheres; dispersing the microspheres in water so as to obtain an emulsion with a solid-liquid ratio of 0.5-1 g: 100 ml, subjecting the emulsion to natural sedimentation for 5 to 10 d and then carrying out vacuum drying at 35 to 45 DEG C. The polymeric microsphere template material prepared by using the method has the characteristics of uniform particle size, small particle size, large specific surface area, neat and ordered structure, strong adsorptivity, great coacervation effect, strong surface reaction capability, etc.

The invention provides a nanoparticle for microwave touch release of a PLGA shell, and a preparation method and application thereof, and relates to the technical field of nanoparticle drug carriers. The nanoparticle at least takes PLGA as a shell, and at least an ionic liquid microwave sensitizer is wrapped in the nanoparticle. Under action of a microwave field, when the prepared nanoparticle formicrowave touch release of the PLGA shell reaches a target tissue, local irradiation is performed on the tissue by using a microwave therapeutic instrument, and the microwave sensitizer in the nanoparticle generates a large amount of heat energy after being irradiated, so that local release of drugs by the nano material is promoted.

The invention provides a magnetic suspension refrigeration compressor, and relates to the technical field of compressors. The magnetic suspension refrigeration compressor comprises a first shell, a stator, a rotor, a magnetic suspension support module, a wiring circuit board, a connecting wire set and a sensor set, wherein the stator is arranged in the first shell and surrounds an electromagneticfield area; the rotor is provided with a permanent magnet part consisting of permanent magnets; the permanent magnet part is positioned in the electromagnetic field area; the magnetic suspension support module comprises a first frame and a second frame; the first frame and the second frame are positioned at two ends of the rotor; the first frame comprises a first wiring part; the second frame comprises a second wiring part; the wiring circuit board is embedded in the first shell, and is electrically connected with the stator and the magnetic suspension support module; the wiring circuit boardis provided with a driving chip; the first wiring part and the second wiring part are electrically connected with the wiring circuit board through the connecting wire set; and the sensor set is used for detecting the position of the rotor and returning data to a driving chip. The magnetic suspension refrigeration compressor can greatly reduce the maintenance time, improves the maintenance efficiency, and reduces the maintenance cost.

The invention discloses a spray rod device of an intelligent toilet. The device comprises a shell, and a water divider, a flexible pipe set, a spray rod component and a mobile pushing component which are arranged in the shell; the water divider is connected with a signal power supply, an air inlet pipe and a water inlet pipe are connected to the inlet end of the water divider respectively, the flexible pipe set is connected to the outlet end of the water divider, and the flexible pipe set comprises multiple cleaning pipes; the spray rod component comprises a guide pipe, a spray nozzle and a spray rod body, the guide pipe is fixed to the shell, multiple water outlets are formed in the spray nozzle, the spray nozzle is fixed to the spray rod body, the spray rod body is mounted in the guide pipe, and the cleaning pipes penetrate into the spray rod body and are correspondingly communicated with the water outlets one to one; the mobile pushing component is arranged below the spray rod body and used for pushing the spray rod body to stretch and move from the interior of the guide pipe toward the exterior of the shell. The spray rod device is compact in structure and reasonable in layout, achieves cleaning in three modes, saves internal space and makes the interior of the toilet tidy orderly and tidy.

The invention provides an integrated water path structure of a water purifier. The integrated water path structure comprises a shell which is of a box shape in an encircling manner, a plurality of connection heads, and hoses and pipe fittings which are connected with the respective connection heads, wherein the pipe fittings and the hoses are arranged inside the shell; the connection heads are fixed on the shell, and one end of each connection head extends out of the shell; the hoses, the pipe fittings and the connection heads are connected through joint structures; the joint structures comprise hose joints located on the pipe fittings and the connection heads and fastening caps; the front ends of the hose joints are provided with cone steps; the hoses are connected with the cone steps in a tightened sleeving manner; the fastening caps are connected to the peripheries of the hoses in a tightened sleeving manner. The joint structures cannot scratch pipe walls, do not have fatigue damage and are durable and reliable; by the adoption of the closed shell and the cooperation of standard pieces such as the connection heads, the pipe fittings and the hoses, the integrated water path structure is tidy, easy and convenient to mount and firm; no complicated mold is needed; upgrading of different products or functions with the integrated water path structure can be realized only by increasing or decreasing the quantity of the hoses and the quantity of the connection heads, so that the cost is greatly reduced; the hoses cannot be damaged by freezing expansion, so that the integrated water path structure is applicable to environments at various atmospheric temperatures.

The invention relates to a nanometer agglomerated sheet-shaped mordenite catalyst and a preparation method thereof. A purpose of the present invention is mainly to overcome the problems of slow diffusion speed and unsmooth diffusion channel in the actual application of conventional spheres and other blocky agglomerated nanometer materials. According to the technical scheme, the catalyst comprises,by weight, A) 5-95% of a nanometer aggregated sheet-shaped mordenite material; B) 0.001-3% of a transition metal; and C) 2-80% of a binder. With the technical scheme, the problems in the prior art are well solved. According to the present invention, the cost of the technology can be controlled, the excellent reaction performance can be provided in the high space velocity aromatic hydrocarbon conversion reaction, the occurrence of aromatic hydrocarbon polymerization, cracking and other side reactions can be effectively inhibited, and the catalyst can be used in the industrial production of aromatic hydrocarbon conversion.

The invention discloses a micro tooth insert structure, which comprises insert bodies provided with gemstone bases, the gemstone bases are of insert grooves formed in the insert bodies, the shapes of the bottoms of the insert grooves are matched with those of gemstone, and the side walls of the insert grooves are V shaped; each insert body is provided with at least two gemstone bases which are closely connected, and the V shaped side walls of two ends of the gemstone bases are formed as continuous jagged shapes, and are supported on waists of the gemstone. Each gemstone base of which the side wall is in the jagged shape can sufficiently expose the gemstone, the aesthetic extent of the inserts is improved, the structure is closely arranged, good order is realized, and the firm level of gemstone mounting is higher. The invention also provides a micro tooth insert process, comprising a process for preparing Y shaped holding paws by two times of edge shoveling. The prepared micro tooth insert structure is higher in transmittance, and the gemstone fire is more comprehensively and stereoscopically shown.

The invention discloses a preparation method of a titanium oxide nanotube array film. The preparation method includes the following steps that (1), a 10 mm*20 mm pure titanium sheet is cut, ground through metallographical sand paper, and sequentially washed ultrasonically with acetone, ethyl alcohol and deionized water; (2), the pure titanium sheet is polished for 30 s with a mixed solution formedby hydrofluoric acid, concentrated nitric acid and deionized water, and a pre-treated pure titanium sheet is prepared, wherein the volume ratio of the three solutions is 1:4:5; and (3), the pre-treated pure titanium sheet serving as an anode and a graphite sheet serving as a cathode are put in an oxidized solution at room temperature, oxidation treatment is carried out for 30 s-3,000 s in the 20Vvoltage environment provided by a direct current stabilized power supply, and the high-density titanium oxide nanotube array film with the orderly structure is generated on the surface of pure titanium. The electrode spacing between the anode and the cathode is 3 cm, and the oxidized solution is prepared from electrolyte formed by mixing 0.5 wt% of hydrofluoric acid, 0.1 wt% of glacial acetic acid and 0.1 wt% of polyethylene glycol, glacial acetic acid serving as a complexing agent, and polyethylene glycol serving as a stabilizer.

The invention particularly relates to a stainless steel surface nano-pore array film and a preparation method thereof. The technical scheme is that: stainless steel treated by surface pretreatment is used as an anode and is placed in a phosphate buffer solution to perform electrochemical anodic oxidation treatment; the time for the electrochemical anodic oxidation treatment is 0.1-4 h; a nano-pore array film is obtained on the treated stainless steel surface; the voltage for the electrochemical anodic oxidation is 10-80 V, and the temperature for the electrochemical anodic oxidation is -5 to 40 DEG C. The preparation method of the invention is simple, effective, environment-friendly, and low in cost; the stainless steel surface nano-pore array prepared by the method has a structured and ordered structure, a high density, a controllable pore diameter and pore depth, and no other impurity elements intervened, is firmly combined with the substrate, and has strong corrosion resistance andhigh hardness.

The invention provides a magnetic suspension refrigeration compressor, and relates to the technical field of compressors. The magnetic suspension refrigeration compressor comprises a first shell, a stator, a rotor, a magnetic suspension support module, a wiring circuit board, a connecting wire set and a sensor set, wherein the stator is arranged in the first shell and surrounds an electromagneticfield area; the rotor is provided with a permanent magnet part consisting of permanent magnets; the permanent magnet part is positioned in the electromagnetic field area; the magnetic suspension support module comprises a first frame and a second frame; the first frame and the second frame are positioned at two ends of the rotor; the first frame comprises a first wiring part; the second frame comprises a second wiring part; the wiring circuit board is embedded in the first shell, and is electrically connected with the stator and the magnetic suspension support module; the wiring circuit boardis provided with a driving chip; the first wiring part and the second wiring part are electrically connected with the wiring circuit board through the connecting wire set; and the sensor set is used for detecting the position of the rotor and returning data to a driving chip. The magnetic suspension refrigeration compressor can greatly reduce the maintenance time, improves the maintenance efficiency, and reduces the maintenance cost.

The invention provides a method for preparing Fe3O4 nanorods in a gradient magnetic field, which comprises the following steps: under the action of a gradient magnetic field, dropwisely adding a solution containing iron ions and ferrous ions into a reactor charged with ammonia gas, and reacting at 80-90 DEG C for 40-50 minutes; separating a black precipitate from the solution; and cooling to room temperature, respectively washing with distilled water and ethanol, and carrying out vacuum drying to obtain the Fe3O4 nanorods. The scanning electron microscope, transmission electron microscope, X-ray diffraction and other analyses indicate that the prepared Fe3O4 nanorods have the advantages of regular and orderly structure, complete crystals and uniform morphology, the diameters are 35-45nm, and the lengths are 300-400nm; the analysis on the magnetic properties of the product at room temperature detects that the magnetic remanence and coercive force of the product can be neglected, the saturation magnetization is 54-86 emu / g, and thus, the product appears superparamagnetism; and the magnetic response analysis illustrates that the Fe3O4 nanorods also have high magnetic response, and such characteristic has great potential application prospects in the fields of drug delivery systems and catalysis.

The invention discloses a carbon film obtained by self assembly of graphene oxide or its derivatives and a preparation method thereof, and relates to a preparation method for a highly ordered carbon film. The objective of the invention is to solve the problems existing in the prior art that the combination between a carbon film and a substrate is poor, the preparation technology is complex, the cost is high, and the thickness of carbon films is difficult to control in the process of preparation. The carbon film provided in the invention uses graphene oxide or its derivatives as the raw material and is obtained through the process of self assembly. The carbon film is prepared by the following steps: dispersing graphene oxide or its derivatives in a solvent so as to obtain a solution, immersing a substrate into the solution and allowing the solution to stand at a constant temperature for assembly, wherein the temperature is in a range of 50 to 100 DEG C. The carbon film prepared in the invention has smooth surfaces, strong bonding force to the substrate and good light transmittance and mechanical properties; the modulus of the carbon film is 80 to 120 GPa, and the hardness is 7 to 9 Gpa; the carbon film is orderly orientated along the surface of the substrate, and the thickness of the carbon film is 10 nm to 2 mu m. The preparation process is controllable and concise and produces products with controllable thickness. The carbon film provided in the invention has broad application prospects in such fields as electrode materials, electronic chips, solar cells and high efficient catalysis.