127results about How to "Uniform shape" patented technology

The invention discloses a silver nanodendrite surface enhanced Raman scattering (SERS) substrate, and a preparation method and application thereof, relating to the technical field of nanomaterial science and Raman detection. The SERS active substrate is of silver dendrites which are distributed evenly, and the three-dimensional sizes of dendrites are adjustable. The preparation method of the invention is characterized in that the silver nanodendrites are electrically deposited on commercially available ITO (Indium-doped Tin Oxide) conductive glass by adopting a constant current deposition method and using a silver nitrate solution as electrolyte without adding any other auxiliary. The preparation method of the invention has the advantages of simple, convenient fast (30s) preparation process, low cost, small current and low voltage, and the silver dendrites can be transferred to any substrate (paper, other metal sheets or plastic sheets). The substrate obtained by the method disclosed by the invention has high stability and ordered and controllable structure, and exhibits quite high sensitivity in Raman spectrum detection.

The invention relates to a controllable synthesis method for a nitrogen and phosphorus co-doped graphitized carbon ball with a hollow structure. The method comprises the following preparation steps: (1) a carbon source, soluble metal salt and a catalyst are dissolved in a solvent according to a molar ratio, the mixture is transferred to a hydrothermal reaction kettle for hydrothermal synthesis after stirred to be dissolved completely, and an obtained precipitate is cleaned, filtered and dried to obtain a primary product; (2) the obtained primary product is subjected to high-temperature reduction under the protection of gas in a high-temperature reaction furnace; and (3) the product obtained by high-temperature reduction is placed in an acid solution to be soaked, and then cleaned, filtered and dried to obtain the nitrogen and phosphorus co-doped graphitized carbon ball with the hollow structure. The nitrogen and phosphorus co-doped graphitized carbon ball with the hollow structure prepared with the method has the advantages that the appearance is uniform, a carbon shell has a cellular structure, the interior of the carbon ball has a mesoporous carbon support structure, the graphitization degree is good, and the like; and the carbon ball can be used in various fields of efficient catalytic conversion, energy storage and conversion, medicine release and control, substance adsorption and separation and the like. A template-free hydrothermal synthesis technique is simple and controllable, and can be used for mass production.

The invention relates to a preparation method of nitrogen-doped graphene. The preparation method comprises the following steps: adding raw materials of citric acid and melamine into methanol, stirring, performing ultrasonic treatment and drying to obtain a precursor, and calcining the precursor in a tubular furnace by two stages to finally obtain the nitrogen-doped grapheme. Compared with the prior art, the preparation method has the following advantages: the raw materials are wide in source; the steps are simple; requirements on equipment are low; in the preparation process, a reducing agent is not required, so that environment pollution is low; the prepared nitrogen-doped graphene is thin in sheet, large in specific surface area, uniform in structure and good in reproducibility.

The invention relates to a Ti oxide nano tube and preparing method. Its character: using TiO2 of various crystal shapes as raw material, and making ultrasonic processing, hydrothermal reaction and after treatment in NaOH solution to obtain titanic acid nano tube, and then baking to form TiO2 nano tube with anatase structure. The TiO2 nano tube has uniform appearance, small tube diameter and large specific surface area. It has wide applied prospect in the fields of photocatalysis, environmental purification, solar cell, gas and wet sensitive materials, etc. It has low energy consumption, simple device, and easy controlled condition, easy to realize large-scale industrial production.

The invention relates to a preparation method for silver nanocubes. The silver nanocubes different in side length are prepared by adopting a seed growing method. The preparation method for the silver nanocubes comprises the following steps: firstly, preparing silver cube seeds of which the mean side length is 35nm by adopting ethylene glycol as solvent and a reducing agent, PVP (polyvinyl pyrrolidone) as a stabilizer, silver trifluoroacetate as a silver source and hydrochloric acid and soluble sulphurizing salt as adjuvants; then, preparing the silver nanocubes of which the mean side length is 40-160nm by adopting the ethylene glycol as the solvent and the reducing agent, the PVP as the stabilizer and soluble silver salt as the silver source by controlling the relative usage of the seeds and the silver salt. The method provided by the invention has the advantages that the operation is simple, the process is controllable, the obtained silver nanocubes are high in stability, and the silver nanocubes can be efficiently synthetized, and therefore, the preparation method for the silver nanocubes is broad in market prospect.

The invention discloses a silver nano lattice surface enhanced raman active substrate and a preparation method thereof. According to the substrate, silicon single crystal is used as an underlay; a silver nanoparticle array structure is deposited on the silicon surface; the particle size of the silver nanoparticles is 30-90 nm; and the center distance of the particles is 99-111 nm. The silver nano lattice surface enhanced raman active substrate provided by the invention has a uniform shape and a controllable structure, and has an obvious surface raman enhancement effect on analytes of different concentrations, and an enhancement signal is uniform and stable. According to the method, the structural parameters and the shape of a silver nano lattice can be adjusted according to structural parameters of an ultra-thin aluminum oxide template, so that different influences of different metal nano lattice substrates on a raman surface enhancement effect are realized. The substrate and the method have the advantages of easiness for operation, low cost and easiness for industrial production.

The invention relates to a micron/nanoscale BiOCl film material and a preparation method thereof. The film material comprises a substrate. A layer of bismuth metal film is deposited on the substrate; a layer of BiOCl film consisting of two-dimensional BiOCl nano sheets is formed by using the bismuth metal film as a raw material. The thickness of the BiOCl film is between 30nm and 2 mu m. The preparation method for the micron/nanoscale BiOCl film material comprises the following steps: depositing a layer of bismuth metal film on the substrate by adopting physical vapor deposition; soaking in solution containing H2O2 and Cl- by a wet method, adjusting the volume percentage of H2O2 to 1 to 99 percent and the concentration of Cl- to between 0.01 and 2 mol/L to ensure that the pH value of the mixed solution is in a range from 0.5 to 7, keeping the temperature of a reaction system between 20 and 80 DEG C, and soaking for 1 to 60 minutes; and obtaining the micron/nanoscale BiOCl film material with different features after washing. The preparation method for the micron/nanoscale BiOCl film material has the advantages of simple and controllable process, uniform dimension and feature of the product, short production cycle, low cost and suitability for large-scale industrial production. The BiOCl film material has wide application prospects in photocatalysis, optoelectronic thin-film devices, nanocoatings, pearl pigments, and other fields.

The invention relates to a method for preparing zinc oxide nanoshuttle, and provides a method for preparing a ZnO micro nano material with new appearance by a simple low-temperature hydro-thermal synthesis technology. The method comprises the following steps of: dripping a zinc nitrate solution into a hexamethylenetetramine solution slowly, dripping an ammonia water, and stirring; pouring the mixture into a reaction kettle, drying and diluting; and centrifuging a diluent to obtain a precipitate, drying the precipitate, and grinding to obtain the zinc oxide nanoshuttle. According to the zinc oxide nanoshuttle, the average value of the diameter of an intermediate section of a shuttle body is 500 nanometers, and the average length of the shuttle body is 1 to 2 micrometers. The zinc oxide nanoshuttle is pure in crystallization, and uniform in appearance and in size, and can be used for the fields of photochemical catalysis, gas sensitive sensors, moisture-sensitive sensors, photoelectronic devices, piezoresistors and the like.

The invention discloses a method for preparing a hollow microporous carbon sphere coated nanometer sulfur molecular material, and belongs to the field of the chemical battery. The method comprises the steps of dissolving TPOS into a solution containing ethyl alcohol, water and ammonia water; then adding resorcinol and formaldehyde; carrying out centrifuging, washing, and calcining under argon after the reaction is finished; then mixing with an HF water solution to perform a corrosion reaction to obtain hollow microporous carbon spheres; and enabling the hollow microporous carbon spheres to be reacted with sublimed sulfur in a grinding and mixing manner to obtain the hollow microporous carbon sphere coated nanometer sulfur molecular material. The hollow microporous carbon sphere coated nanometer sulfur molecular material prepared by the invention is uniform in appearance, and relatively high in specific surface area and large-pore volume, so that the material can contain relatively high sulfur content; and therefore, electron transport can be facilitated, and an effect of improving the coulombic efficiency and the cycling stability of the battery can be achieved.

The invention discloses a coaxial polyphosphazene nanofiber composite membrane which is prepared by the collection of coaxial fibers taking polyacrylonitrile as a core and polyphosphazene as a shell, wherein the diameters of the coaxial fibers are 30 nanometers to 3 microns. The invention also discloses a preparation method of the composite membrane, comprising the following steps of: adopting a coaxial electrostatic spinning device to inject polyacrylonitrile solution into the inner layer of a coaxial spinneret, and inject polyphosphazene solution into the outer layer of the coaxial spinneret, adjusting factors such as spinning voltage, the flow rate of spinning solutions at the inner layer and the outer layer and receiving the distance and the like, and carrying out coaxial electrostatic spinning and collecting, thus preparing the coaxial polyphosphazene nanofiber composite membrane. The preparation method is simple, the prepared coaxial polyphosphazene nanofiber composite membrane has stable morphostructure and good mechanical strength, and the fiber composite membrane has the core-shell structure and uniform shape.

The invention relates to a microfluidic-control preparation method for a microsphere of a polymethylmethacrylate-coated cadmium telluride (CdTe) quantum dot, and relates to a preparation method for the microsphere of a polymethylmethacrylate-coated CdTe quantum dot. The microfluidic-control preparation method for the microsphere of the polymethylmethacrylate-coated (CdTe) quantum dot aims to solve the problems that the surface of the quantum dot needs to be modified and the quantum dot is easy to dissolve by the microsphere of the polymethylmethacrylate-coated CdTe quantum dot by adopting a traditional preparation method for the microsphere of the polymethylmethacrylate-coated CdTe quantum dot. The method comprises the following steps: preparing a sodium hydrogen telluride solution; preparing a CdTe quantum dot; preparing a polymer solution; connecting a microfluidic-control system; respectively putting the polymer solution and silicone oil into injectors A and B of the microfluidic-control system; setting the propulsion speed of the injectors A and B; after starting, formed liquid beads flow into a rotary evaporator; and curing and evaporating the silicone oil to obtain the microsphere of the polymethylmethacrylate-coated CdTe quantum dot. In the microfluidic-control preparation method for the polymethylmethacrylate-coated CdTe quantum dot, the polymethylmethacrylate-coated CdTe quantum dot is selected, therefore, fluorescence is stable, and the microsphere can be adjusted in size and can be used for field of fluorescent display and the like.

The invention relates to a method for in-situ synthesis of a carbon coated-hydrated V3O7 nanobelt and a lithium ion battery, and discloses a method for in-situ synthesis of the carbon coated-hydrated V3O7 nanobelt. The method comprises the following steps of respectively heating reaction raw materials to a certain temperature by a high-temperature hybrid hydrothermal method, mixing the reaction raw materials, cooling the reaction raw materials to a room temperature after completion of the hydrothermal reaction, and carrying out heat preservation and drying processing to obtain the in-situ carbon coated V3O7H2O (V3O7H2O@C) nanobelt. The in-situ synthesis of the carbon coated-hydrated V3O7H2O nanobelt with high crystallinity and high structural strength is achieved by the novel high-temperature hybrid hydrothermal method; the material obtained through preparation can be used for an electrode material of the lithium ion battery; and moreover, the carbon coated-hydrated V3O7H2O nanobelt is endowed with very excellent electrochemical performance and can be applied to the field of the lithium ion battery.

The invention discloses a preparation method of a photocatalyst based on monodisperse elemental bismuth and carbon nitride. The method comprises the following key steps: monodisperse elemental bismuth particles which are prepared through a liquid phase chemical reduction technology are immobilized on the surface of carbon nitride used as a carrier and prepared by using urea as a precursor, and a surfactant component in the above obtained composite system is removed through a coordination exchange reaction to obtain the elemental bismuth/carbon nitride photocatalyst. The preparation method of the elemental bismuth/carbon nitride photocatalyst has the advantages of simple process, low energy consumption, controllable material morphology and high reaction activity. The elemental bismuth/carbon nitride photocatalyst prepared in the invention can rapidly and effectively remove carbon monoxide and other pollutants in air, and the catalysis activity can be regulated through the controllable synthesis of the elemental bismuth.

The invention relates to a hydrothermal synthesis method for hollow carbon nanomaterials. According to the method, glucose is taken as a carbon source, sodium dodecyl benzene sulfonate (SDBS) is taken as a surfactant; the hollow carbon nanomaterials with a unique structure are obtained by using the simple hydrothermal synthesis method, such as a cap shape and a flat balloon shape, wherein the surfactant (SDBS) can also be a nonionic triblock copolymer P123((EO)20(PO)70(EO)20), F127((EO)106(PO)70(EO) 106); and the carbon nanomaterials with the same shape can be obtained. The hydrothermal synthesis method has the advantages of simple process, low consumption, environmental friendliness and high repeatability. A grain size of the obtained hollow carbon nanomaterials is 200nm or 1 micron, and monodispersity is high. Therefore, the hollow carbon nanomaterials have potential excellent electrochemical performance, the hollow carbon nanomaterials provided by the invention have a potential application prospect in the fields, such as catalysis, energy and biomedicine.

The invention relates to a preparation method of a nanometer cordierite-based ceramic dielectric material used for a high-frequency chip inductor, which comprises the following steps of: (1) preparing magnesia-alumina-silica sol; (2) preparing opposite-phase W/O (water-in-oil) microemulsion; (3) performing gelation technology; and (4) pressing amorphous cordierite powder obtained in the above steps by adopting a semi-dry method under the pressure of 100-120 MPa to form small wafers, sintering the small wafers at 850-1050 DEG C in a silicon-molybdenum rod resistor furnace, and maintaining the temperature for 3-6 hours to obtain the nanometer cordierite-based ceramic dielectric material used for the high-frequency chip inductor. The invention has the advantages of regular and uniform nanometer powder shape, high powder surface activity and low degree of aggregation, and is applicable to tape casting. The material can be cofired together with an Ag/Pd electrode at the temperature lower than 950 DEG C to be prepared into ceramics, and the dielectric requirements (epsilon<5, and tg delta<0.001; 1 GHz) and the thermal expansion requirements (3*10<-6>K<-1><=alpha<=6*10<-6>K<-1>, 25-300 DEG C) of the dielectric material used for the high-frequency chip inductor can be met.

The invention discloses a method for preparing a caesium-lead halide nanorod and the product obtained through the method. The method includes the steps that lead halide and octadecene are mixed to be stirred for 0.5-1.5 hours, and then oleylamine and oleic acid are added into a mixture in sequence to be stirred till the lead halide is completely dissolved; the lead halide is heated to 130-200 DEG C after being completely dissolved, then a caesium precursor solution is slowly poured into liquor, and caesium-lead halide is prepared through a thermal insulation reaction; after the reaction is completed, reaction liquid is subjected to centrifuging, separating and washing, and accordingly the caesium-lead halide nanorod is obtained. According to the method, the caesium-lead halide nanorod is synthesized in an organic phase system, the reaction temperature is 130-200 DEG C, and the method belongs to a low-temperature organic phase synthesis method; the method is easy to operate, high-temperature and high-pressure reactions can be avoided, safety is achieved, the size of the nanorod can be regulated and controlled through the reaction condition, the obtained caesium-lead halide nanorod is even in shape, good in crystal form, and wide in application prospect in the fields of solar cells, LEDs, panel display and the like.

The invention discloses a FeS nanosheet preparing method. The method comprises the steps of 1, dissolving an iron-containing precursor, a sulfur-containing precursor and a surface active agent in water to obtain a solution, wherein the surface active agent is hexadecyl trimethyl ammonium bromide; 2, transferring the solution obtained in the step 1 into a reaction still to be heated, conducting centrifugation after complete reaction, washing a sample with water and ethyl alcohol, and then obtaining a FeS nanosheet. According to the method, the technology is simple, production cost is low, and the prepared FeS nanosheets have a uniform shape and a thickness of about 3 nm and are suitable for directly preparing a lithium battery electrode material; during preparation, water serves as the solvent, preparation is safe, cost is low, and application and popularization are facilitated.

The invention relates to the field of the preparation of inorganic material, in particular to a method for preparing a Cd Te nano-wire and a Cd Te-based core-shell type nano-wire by liquid-phase non-catalysis. The method comprises the steps of: taking pyrolytic organic precursor as a synthetic route, and synthesizing the Cd Te nano-wire by ligand control induced-positioning assembly strategy; and taking the Cd Te nano-wire as a template, and building the Cd Te-based core-shell type nano-wire by controllable coating strategy. The preparation method is free from catalyst, simple in operation, mild in condition and rapid in reaction; the prepared Cd Te nano-wire is uniform in appearance, good in crystallization, high in purity and controllable in length and thickness; the prepared Cd Te-based core-shell type nano-wire is even and compact in coating of a shell layer, controllable in thickness and adjustable in components; and the nano-wire products prepared by the invention have wide application value in the field of a photoelectric device, a nano device and a sensor.

The invention belongs to the technical field of inorganic nanometer materials and particularly discloses a method for template-free synthesis of phosphoric acid microspheres. The method specifically comprises the following steps of (S1) dissolving antimony potassium tartrate and phosphoric acid into a solvent to form a mixed solution, (S2) conducting solvo-thermal reaction on the obtained mixed solution and performing cooling, washing, centrifugal separationand drying to obtain a product, wherein the solvent is ethylene glycol or glycerol. The method adopts cheap and easily-obtained raw materials, and a large amount of phosphoric acid microspheres which is good in dispersity and even in shape and size, consists of namo rods and are of hollow structures are synthesized. The average diameter of the prepared phosphoric acid microspheres ranges from 1.3 microns to 2.5 microns, and the prepared phosphoric acid microspheres are expected to be widely applied in the fields of photocatalysis, lithium ion batteries and the like.

The invention discloses a method for preparing granulate and sheetlike fluorescence labeling microplastics. The method comprises the steps that plastics are mixed with dye; and after fluorescence labeling, tabletting, pulverization and dispersion are conducted on the plastics through an enclosed mixing process, filter sieving is conducted, so that the granulate and sheetlike fluorescence labeling microplastics within different granule size ranges are obtained. By means of the method, the fluorescent microplastics which exist in the environment generally and are in different shapes can be obtained conveniently and quickly; the distribution and enrichment rules of the microplastics in different shapes in environmental media and organism bodies can be analyzed in a qualitative and quantitative manner conveniently; and the method can be widely applied to ecological environment risk research of various microplastics.

The invention belongs to the technical field of material preparation and relates to a preparation method of amorphous BaF2. The preparation method comprises the following steps of preparing cubic fluorite-structure BaF2 nano-crystal grains as initial raw materials having crystal grain sizes of about 14nm by a solvothermal synthesis method, applying pressure to the material by a diamond opposite-pressing anvil press until the highest pressure is 30GPa so that the cubic fluorite structure of the sample is transformed into an amorphous structure, and releasing the pressure in the diamond opposite-pressing anvil press until the pressure is equal to ordinary pressure so that the amorphous structure of the BaF2 sample is still retained under the ordinary pressure. The initial raw materials have the advantages of simple processes, small crystal grain size, uniform morphology and narrow particle size distribution. The product obtained by high-pressure synthesis has a stable amorphous structure under the ordinary pressure and has high phase purity. The BaF2 material has good optical performances. The novel synthetic material has large application potential in fields of optics and biology.

In the preparation of the cathode material, soluble lithium salt, cobalt salt, nickel salt, etc. in polar organic solvent, and organic solution of hydroxide are coprecipitated and the precipitate is stoved and ground to obtain nano level cathode material grains; the grains are mixed with carbon black and polyvinylidene fluoride in certain proportion, added with solvent and the mixture is preparedinto the cathode material plate via curtain coating process. The lithium battery with the cathode material has the advantages of high voltage, high capacity, long circulation life and high safety. The lithium battery may be used in portable electronic equipment, electric vehicle space equipment, etc. The new cathode material makes the lithium battery capable of being charged and discharged in high rate and this is significant for the application of lithium battery in great power device.

The invention provides preparation and stripping methods of a mesoporous cobaltosic oxide nanosheet. According to the method, urea is added into a solution with the Co<2+> concentration being 0.01 to 0.5 mol/L; constant-temperature reaction is performed for 24h at 120 DEG C; cooling, centrifugation, washing and drying are performed; after the drying is completed, a pink lamellar precursor nanosheet is obtained; the lamellar precursor nanosheet is calcined at the temperature being 200 to 400 DEG C to obtain a mesoporous black cobaltosic oxide nanosheet. The mesoporous black cobaltosic oxide nanosheet is dissolved in an ammonium nitrate solution for pretreatment; after centrifugation, supernatant liquid is dissolved in formamide; mixed liquid is subjected to water bath ultraphonic treatment for 1 to 2h at 100 to 200W at the room temperature; constant-temperature oscillation is performed for 3d in a constant-temperature oscillator at a rotating speed being 100 to 300r/min; supernatant obtained after centrifugation is a striped single lamellar cobaltosic oxide nanosheet. Obtained cobaltosic oxide inherits excellent properties of matrixes; the crystallinity is high; a larger lamellar structure is used; meanwhile, the surface also has the obvious mesoporous features.

The invention discloses a preparation method of octahedral porous molybdenum dioxide and an application of the octahedral porous molybdenum dioxide in a lithium-ion battery. The preparation method comprises the steps of: adding trimesic acid and tetramethyl ammonium hydroxide to a solution containing a copper salt and a phosphomolybdic acid and/or phosphomolybdate for stirring to form an emulsion; transferring the emulsion into a hydrothermal reaction kettle for hydrothermal reaction to obtain a precursor compound; and putting the precursor compound into a protective atmosphere, carrying out thermal treatment at a high temperature and then washing the product to obtain a porous octahedral molybdenum dioxide material which is formed by stacking and assembling ultrafine nanoparticles, is uniform in shape and form and good in stability and has a porous characteristic. The molybdenum dioxide material is applied to the lithium-ion battery as a negative electrode material, so that the rate capability and the cycling stability of the electrode material are improved under the premise of ensuring the specific capacity; the preparation technology of the molybdenum dioxide material is simple; the cost is low; and the molybdenum dioxide material has a relatively good research prospect.

The invention provides a polyacrylonitrile/polyacrylic acid nanofiber lithium sulfur battery diaphragm with a controllable pore structure. A preparation method of the polyacrylonitrile/polyacrylic acid nanofiber lithium sulfur battery diaphragm with the controllable pore structure is characterized by comprising the following steps: preparing polyacrylonitrile/polyacrylic acid composite nanofibersby electrospinning; performing ethanol vapor treatment to obtain the polyacrylonitrile/polyacrylic acid composite nanofibers with the controllable pore structure. The prepared composite material has the characteristics of complete fiber morphology, uniform pore size distribution and the like. Polyacrylonitrile can act as a composite nanofiber framework while polyacrylic acid is used as a structurecontrol material of the composite nanofibers. The composite nanofiber diaphragm has the advantages of environmental friendliness, high efficiency, precise regulation of pore size and porosity, stablephysical and chemical properties and the like.

The invention provides a visible light response type lanthanum-doped bismuth tungstate catalyst and a preparation method thereof and belongs to the technical field of photocatalysis. The lanthanum-doped bismuth tungstate catalyst is prepared by carrying out solvothermal reaction on bismuth nitrate (Bi(NO3)3.5H2O), lanthanum chloride (LaCI3.7H2O) and sodium tungstate (Na2WO4.2H2O) in ethylene glycol to prepare sediment and washing and drying the sediment, wherein the doping ratio of lanthanum in the lanthanum-doped bismuth tungstate catalyst is 2 to 10 weight percent. The La-Bi2WO6 catalyst hasvery good photocatalytic performance and can be used for photocatalytically degrading organic pollutants, especially antibiotic pollutants. When the doping ratio of the La is 5 percent, the photocatalytic effect of the La-BiWO6 is the best. Under a simulated sunlight illumination condition of a 300W xenon lamp, the removal rate of the catalyst on tetracycline with the initial concentration of 30mg/L reaches 96.25 percent.

The invention discloses a preparation method of a high-activity mpg-C3N4/BiVO4/TiO2 heterojunction photocatalyst. Firstly, SBA-15 is taken as a template, dicyandiamide is taken as a raw material and subjected to thermal polymerization, and graphite-like C3N4 powder adopting a mesoporous structure is prepared and uniformly dispersed in deionized water; bismuth nitrate pentahydrate and ammonium metavanadate in an equal molar ratio are added to an mpg-C3N4 solution, a certain quantity of TBOT solutions is evenly dropwise added, a suspended mixed precursor solution is formed, and finally, the mpg-C3N4/BiVO4/TiO2 composite photocatalyst is prepared with a hydrothermal method. The preparation method adopts a simple process, the cost is low, the prepared heterojunction photocatalyst can rapidly separate photoproduction electrons and holes, the life of photoelectrons is prolonged, the recombination rate of the photoelectrons and holes is reduced, and the heterojunction photocatalyst has good response to visible light.

The invention relates to the field of immunity technology, and particularly relates to a method for preparing recombinant coxsackievirus A16 type virus-like particles. In the method, the PI protein and 3C protein of CA16 are expressed in a double-expression plasmid through a yeast expression system. In order to realize the preparation of CA16 virus-like particles, according to the method provided by the invention, an expression vector and an expression system for CA16 virus-like particles are established, wherein the expression vector comprises two open reading frames which respectively contain a P1 protein expression sequence and a 3C protein expression sequence of CA16. According to the invention, a method for preparing recombinant coxsackievirus-like particle protein by use of co-expression of 3C protease and P1 protein is established through codon optimization; and the method can obtain virus particles with high purity, uniform form and stable characters, is used for preparing a hand-foot-and-mouth disease vaccine, and has a great market value.

The invention relates to a manufacturing method of a glass fiber continuous felt. The manufacturing method comprises the following steps of drawing out dried glass fiber proto-filaments through a creel to form proto-filament tows, enabling the proto-filament tows to penetrate through 6-12 pairs of swing arms, transversely throwing and laying the proto-filament tows onto a mesh belt through the swing arms in a reciprocating mode to form a felt blank, evenly scattering a bonding agent on the felt blank, curing the felt blank in a drying furnace, and flattening, trimming and taking up the felt blank to obtain the glass fiber continuous felt. The manufactured glass fiber continuous felt is even in forming and high in interlayer bonding strength and tensile failure strength, meanwhile has excellent high-temperature-resisting performance and can be widely applied to chemical plants, thermal power plants, cement plants, lime factories, coking plants, metallurgical plants, asphalt plants, paint spraying plants and high flues and hot air filtration of electric-arc furnaces, oil-fired boilers and incinerators, and the production efficiency is remarkably improved.

The invention relates to application of a cationic polymer to prepare a nanometer immunologic adjuvant and a preparation method. Polyethylene glycol-polycaprolactone is employed for synthesizing a scaffold, and the scaffold is combined with polyethyleneimine for forming a cationic nanometer micelle, and physical attraction of positive and negative charges is utilized for finishing surface adsorption on a protein antigen, so that the cationic nanometer micelle-antigen particle composite system is prepared. The nanometer immunologic adjuvant is simple in synthesis, low in cost, simple in operation, good in reappearance, capability of realizing immunopotentiation and good in biocompatibility. The preparation method of the nanometer immunologic adjuvant is simple and easy to operate, the cost is low, and the prepared nanometer micelle is stably distributed in a water phase, is uniform in morphology and low in toxicity, and is capable of using simple electrostatic combination to finish loading and transmitting of an antibody, and enhancing immune response of body to an antigen.