38results about How to "Experimental parameters are controllable" patented technology

Preparation of an oil-water separation mesh membrane and its surface wettability conversion method are disclosed. The preparation of the separation mesh membrane comprises the following steps: A, a micro-nano structure is constructed on the surface of a metal mesh membrane by an oxidation method; B, the metal mesh membrane with the nicro-nano structure on the surface in the step A is put into an electric furnace to undergo thermo-oxidative treatment in the air atmosphere at the thermo-oxidative treatment temperature of 180-300 DEG C for 3-20 min; and a product is taken out of the electric furnace to obtain a superhydrophilic oleophobic mesh membrane; and C, the superhydrophilic oleophobic mesh membrane prepared in the step B is immersed in an ethanol solution of long-chain alkanoic acid or long-chain alkyl sulfhydryl at room temperature for 1-30 min, the product is taken out of the solution and then washed with ethanol, and finally the product is dried in a drying oven of 50-70 DEG C for 8-20 min so as to obtain the superhydrophobic oleophylic mesh membrane. The superhydrophobic oleophylic mesh membrane undergoes the treatment in the step B and the superhydrophilic oleophobic mesh membrane undergoes treatment in the step C so as to change surface wettability of the mesh membrane. The method is simple to operate, and the prepared mesh membrane material has good separation efficiency. In addition, surface wettability of the mesh membrane can be changed through simple operations.

The invention relates to a preparation method of a bionic oil-water separation copper net; and the preparation method is enlightened by hydrophobic self-cleanness of natural plant leaf surfaces, and an electrochemical deposition method is adopted to prepare super-hydrophobic surfaces with bionic micro-nanoscale double-layer classification. The method comprises the following steps: firstly, diluted hydrochloric acid, acetone and distilled water are used to clean the copper net for pretreatment; then, the copper net is dipped in electroplating liquid for electrochemical deposition, so that the surface morphology features are changed, and a bionic micro-nanoscale double-layer classification structure is formed on the surface of the copper net; after the electric deposition is finished, the copper net with the bionic micro-nanoscale double-layer classification structure is dipped into modifying solution, so that the surface thereof is formed with a low-surface-energy film; and finally, the surface of the copper net has super-hydrophobic and super-oleophylic characteristics. The preparation method of the bionic oil-water separation copper net is simple in operation, controllable in experimental parameters and low in cost, and can be used for manufacturing oil-water separation materials; and the materials have the super-hydrophobic and super-oleophylic characteristics, excellent mechanical stability and the recycling property.

The invention discloses a preparation method of a super-hydrophobic porous mesh for oil water separation. A porous meshy Sn film is prepared by using a hydrogen bubble template method. The concrete steps are realized under the following conditions that a platinum sheet is used as an anode, a copper wire mesh is used as an electrode cathode, a plating solution comprises the following components: 0.01-0.2mol.L<-1> of SnSO4 and 0.01-0.2mol.L<-1> of H2SO4, the pH value is equal to 4.0+/-0.5, the current density is 0.1-6.0A.cm<-2>, and the deposition time is 5-40s. The hydrogen bubble template method for preparing a porous material has the advantages of simplicity, convenience, low cost and parameter controllability; a three-dimensional porous meshy film can be obtained through depositing on the copper wire mesh by using the method; the porous film is prepared by taking a dynamic hydrogen bubble as a template; compared with a hard template method, the method has the advantages that the template is not needed to be removed, the problems such as high cost, complexity in operation and serious film pollution in the traditional method are solved, and the industrial production is expected to be realized.

The invention discloses a preparation method and application of multifunctional chitosan composite sponge and relates to a preparation method and application of multifunctional oil-water separation sponge with effects of sterilization and separation of oil and water. Underwater super-hydrophobic CS-GO can be used to prepare underoil super-hydrophilic water absorption sponge with effects of sterilization and bioadhesion resistance. Chitosan is a bioenvironmental protection material, has good biocompatibility and biodegradability and is easy to recover again without causing any pollution. Chitosan and graphene oxide are compounded to form the composite sponge having a high specific surface area and the composite sponge is an efficient oil-water separation material having antibacterial activity and low toxicity. The preparation method can solve the problem of oil leakage pollution and bioadhesion in the oil-water separation process at present. The chitosan underoil super-hydrophilic sponge prepared by an ice template method has pore sizes of 20 to 300 microns, an adsorption capacity of 50 to 200g/g and separation efficiency of 99.5% or more in a test.

The invention discloses a preparation method of a lotus-like super-hydrophobic self-cleaning surface. The method comprises the following steps: (1) electroplating a layer of porous metal film on the surface of a metal sheet by adopting a hydrogen bubble template method; (2) putting the prepared porous metal film into an electric heating furnace for oxidizing to obtain a porous metal oxide template; (3) proportionally mixing a high polymer curing system, adding normal hexane, pouring into the porous metal oxide template for curing, and removing the template after curing to obtain the lotus-like super-hydrophobic self-cleaning surface. The method has the advantages of easiness, convenience, environmental friendliness, no need of large-sized instruments, controllability of experimental parameters and low cost, and can be used for manufacturing a lotus-like micromorphology surface. A micro-protruding structure has the characteristics of super hydrophobicity, self-cleaning capability, high mechanical stability, high acid-base resistance and good application prospect, and can be industrialized.

The invention relates to the technical field of yttrium barium copper oxide coating conductors, in particular to a high-performance REBCO multilayer film, application and a preparation method for the high-performance REBCO multilayer film. The high-performance REBCO multilayer film is composed of a REBCO thin film layer and an STO interlayer. The invention further relates to the application of the high-performance REBCO multilayer film during preparing of a high-temperature superconductive belt material and relates to the preparation method for the high-performance REBCO multilayer film. The preparation method comprises the following steps that an IBAD-MgO base belt plated with an isolated layer is taken, and the high-performance REBCO multilayer film is prepared through a multi-target multi-channel pulse laser method. The prepared high-performance REBCO multilayer film prepared has a pure C-axis orientation, a smooth compact surface and a high critical current density, and the critical current density reaches up to 5 MA/cm<2>. The REBCO multilayer film has high critical current under a self field or a magnetic field, has the high binding force, can meet the application requirements for a superconducting cable and the like and is suitable for industrialization production.

The invention discloses a preparation method of a bionic gecko composite microarray, and relates to a preparation method of bionic gecko foot seta. The preparation method of the bionic gecko structure composite microarray comprises the following steps: (1) preparing a Zno microarray and a ZnO/C microarray by using a solution chemical method; (2) dipping the prepared Zno microarray and the ZnO/C microarray into a trichloromethane solution of PDMS (Polydimethylsiloxane), taking out and curing so as to obtain a ZnO/PDMS composite microarray and a Zno/C/PDMS composite microarray. The preparation method disclosed by the invention is simple to operate, controllable in experimental parameters and low in cost, and can be applied to preparation of a ZnO bionic gecko foot microarray and a ZnO/C bionic gecko foot microarray which are wrapped by elastic silica rubber, the two composite microarrays have high adsorption capabilities, can be easily dissociated from adsorption surfaces, and have super-hydrophobicity and self-cleaning capabilities. The area of the bionic gecko foot nano array prepared by using the preparation method is 0.1-5cm<2>, the diameter is 10nm to 500nm, and the height is 0.1-10 micrometers.

The invention provides a preparation method of a bionic gecko tape, and relates to a preparation method of a bionic gecko seta. The preparation method of a composite micro-array of a bionic gecko structure comprises the following steps: (1) preparing ZnO and ZnO/C micro-arrays by a liquor chemical method; and (2) immersing the prepared ZnO and ZnO/C micro-arrays in alcoholic liquor containing amphipathic polyvinylpyrrolidone for several minutes, taking out and placing in hydrochloric acid liquor of aniline, then, adding HCl liquor of sodium benzenesulfonate and ammonium metavanadate, and carrying out a polymerization reaction at room temperature under an N2 atmosphere, thus obtaining the ZnO/PANI (Polyaniline) and ZnO/C/PANI composite micro-arrays after polymerization reaction. The preparation method of the bionic gecko seta provided by the invention is simple to operate, controllable in experiment parameters and low in cost, and can be used for manufacturing a conductive polyaniline coated ZnO nanotube bionic gecko seta micro-array. The area of the bionic gecko seta nano array is 0.1-5<cm2>, the diameter is 10-500nm and the height is 0.1-10 microns.

The invention provides a preparation method of a bionic gecko composite microarray, relating to a preparation method of setae on bionic gecko feet. The preparation method of the bionic gecko structured composite microarray comprises the following steps: (1) preparing a Cu(OH)2 microarray by adopting anodic in-situ electrochemical etching; (2) impregnating the prepared Cu(OH)2 microarray in an alcoholic solution of polyvinylpyrrolidone with amphipathicity for a few minutes, taking out and then putting the Cu(OH)2 microarray in a hydrochloric acid solution of aniline, then adding an HCl solution of sodium benzenesulfonate and ammonium metavanadate, carrying out polymerization reaction at room temperature of N2 atmosphere and obtaining a Cu(OH)2/PANI (polyaniline) conductive composite microarray after polymerization reaction. The preparation method of the setae on bionic gecko feet is simple to operate, is controllable in experiment parameters and low in cost and can be used for preparing the conductive PANI coated Cu(OH)2 bionic gecko feet conductive microarray. The area, diameter and height of the bionic gecko feet nano array are respectively 0.1-5cm<2>, 50nm-10mu m and 0.1-20mu m.

The invention discloses a preparation method of a bionic gecko composite microarray, and relates to a preparation method of bionic gecko foot seta. The preparation method of the bionic gecko structure composite microarray comprises the following steps: (1) preparing a Cu(OH)2 microarray by using an anode method in an in-situ electrochemical etching mode; (2) dipping the prepared Cu(OH)2 microarray into a trichloromethane olution of PDMS (Polydimethylsiloxane), taking out and curing so as to obtain a Cu(OH)2/PDMS composite microarray. The preparation method of the bionic gecko foot seta is simple to operate, controllable in experimental parameters and low in cost, and can be applied to preparation of a Cu(OH)2 bionic gecko foot microarray which is wrapped by elastic silica rubber. According to the Cu(OH)2 silica rubber elastomer composite microarray prepared by using an in-situ electrochemical etching with the combination of a dipping method, the area of the bionic gecko foot nano array is 0.1-5cm<2>, the diameter is 50nm to 10nm, and the height is 0.1-20 micrometers.

The invention discloses a preparation method of an oil/water separation material. The method comprises the following steps of (1) preparing a porous meshy Ni film by using a hydrogen bubble template method; (2) annealing the surface of the Ni film at a certain temperature to ensure that a surface layer is oxidized to form NiO, and modifying the surface of the porous meshy Ni film by using dodecylthiol and tetradecanoic acid to obtain a super-hydrophobic porous meshy film. The hydrogen bubble template method for preparing a porous material has the advantages of simplicity, convenience, low cost and parameter controllability; a three-dimensional porous meshy film can be obtained through depositing on a copper wire mesh by using the method; the porous film is prepared by taking a dynamic hydrogen bubble as a template; compared with a hard template method, the method has the advantages that the template is not needed to be removed, the problems such as high cost, complexity in operation and serious film pollution in the traditional method are solved, and the industrial production is expected to be realized.

The invention provides a medical experimental research device and an implementation scheme. The medical experimental research device is mainly characterized by comprising a base 1, a speed regulating motor 2, a rotary chair 4 and a visual perception cylinder 6. The speed regulating motor 2 is mounted in the base, the rotary chair 4 is mounted on the central axis of the base 1 and controlled by a motor speed regulator 3, the visual perception cylinder 6 is suspended on a support 5 and positioned above the rotary chair 4, the height of the visual perception cylinder can be adjusted by a lifter 7 according to the height of a testee, and patterns with different intersected colors are arranged on the inner wall of the visual perception cylinder 6. By the aid of the medical experimental research device, the testee sits on the chair 4, the head of the testee is positioned on the central axis of the visual perception cylinder 6, the height of the visual perception cylinder is adjusted, eyes gaze at the patterns on the inner wall of the visual perception cylinder, the visual perception cylinder continuously rotates for a period of time, and motion sickness symptoms can be induced. Motion sickness symptom inducing success rate is high, experimental parameters are easily controlled, and the medical experimental research device is simple in structure, low in manufacturing cost, convenient to operate, low in noise, small in occupied space and easy to popularize and apply and can provide experimental conditions for scientific research and teaching of the motion sickness and research and development of a motion sickness treatment method.

The invention belongs to the technical field of Raman scattering, and discloses a surface-enhanced Raman substrate for a large-area nanometer film structure and a preparation method. The preparation method comprises the following steps: soaking a polylysine-modified slide which is taken as an initial substrate in a golden seed solution for activation, and placing the slide in a chloroauric acid solution of a certain concentration; adding a mixed solution prepared by mixing ascorbic acid and sodium citrate according to a certain concentration proportion dropwise in order to continuously reducechloroaurate ions on the polylysine-modified slide to obtain gold atoms, and gathering and adsorbing the gold atoms on the slide to form nanometer gold particles, thereby forming a nanometer film structure of certain surface roughness. The preparation method has the advantage of low cost, easiness in operation, controllable technical process, high repeatability, stability and reliability.

The invention relates to a method and a device for evaluating the desulfurization and denitrification performance of active coke, and the method comprises the following steps: 1) placing a quartz reactor filled with an active coke sample in a reaction cavity in microwave equipment, the reaction cavity being composed of a heating cavity, a microwave cavity and a mixed heating cavity which are nested from outside to inside; the quartz reactor is provided with a gas inlet and a gas outlet, the gas inlet is connected with gas mixing equipment through a pipeline, and the gas outlet is connected with gas analysis equipment; 2) starting the microwave equipment, uniformly mixing N2 and SO2/NO through gas mixing equipment, introducing the mixture into the quartz reactor through a gas inlet, measuring the outlet gas concentration of a gas outlet by using gas analysis equipment, and analyzing the desulfurization and denitrification performance of the active coke sample; and (3) detecting the specific surface area, the micropore volume, the pore size distribution and the like of the active coke sample. According to the invention, the desulfurization and denitrification performance of different active coke samples can be accurately reflected, reasonable performance indexes of the active coke for desulfurization and denitrification can be provided, and the performance indexes of different active coke samples can be detected and analyzed.