424results about How to "Novel preparation method" patented technology

The invention relates to nano optical functional materials, especially relates to an organic functional luminescent carbon quantum dots with high luminescent efficiency, a preparation method therefor and applications thereof. The preparation method employs a single-step pyrolysis synthesis method: organic compounds with a low decomposition temperature (150-300 DEG C) is heated at a temperature of 150-350 DEG C (the organic compounds are generally heated for 1-360min and heating methods comprise organic pyrolysis, hydrothermal method and the like) and subjected to a pyrolytic reaction; organic functional luminescent carbon quantum dots are obtained after post-treatment and purification. Surfaces of carbon quantum dots are modified with organosilane or organic high-molecular compounds with acylamino to form the organic functional luminescent carbon quantum dots. The organic functional luminescent carbon quantum dots can be used as luminescent functional materials, optical functional nano hybrid composite materials or used as biological living cell imaging materials.

The invention relates to a longquan celadon crackle glaze wine bottle and a preparation method thereof. Raw material proportions of a blank material, an internal glaze and an external glaze of the bottle are respectively described as follows: the blank material comprises: 40-55% of Longyan kaolin, 15-25% of Longquan china clay, 8-20% of potassium feldspar, 7-15% of quartz and 5-10% of zijin clay; the internal glaze comprises: 65-70% of glaze fruit, 12-25% of glaze ash and 5-10% of zijin clay; and the external glaze comprises: 60-70% of potassium feldspar, 8-15% of quartz, 8-13% of Longyan kaolin, 8-15% of glaze ash, 5-13% of zijin clay and 0.2-0.4% of Fe2O3. On the basis of above raw materials, the longquan celadon crackle glaze wine bottle is prepared by following steps: preparing slurry, performing an injection moulding process to obtain a wet blank; performing a drying process, a trimming process and a biscuiting process to complete a blank manufacturing process; and finally applying the internal glaze and the external glaze and performing a glazing firing process to obtain a finished product of the longquan celadon crackle glaze wine bottle. The bottle is free of stripes on the internal glaze. The external glaze is decorated through crackles. The bottle is good in quality and is free of internal leakage of wine. The method is low in cost and good in effect.

The invention relates to a kind of globe-form cellulose absorbent with iron carrying and its manufacturing and application. The carrying agent of the invention is globe-form cellulose, and the active center is the hydroxide of iron in the specific form, which has the high absorption activity. The manufacturing feature is as follows: dropwise alkali solution tardily into the solution of cellulose bead and molysite; in stirring condition, iron can load the cellulose bead by dispersing and hydrolyzing; after loading repeatedly and frequently, use the alkali solution to stabilize the ferruginous form. The manufacturing method of the absorbent has the advantages of environmental protection, novelty, simplicity and low cost. Moreover, it can remove arsenic, fluorine and other heavy metal with high efficiency and high selectivity, and the absorbent has excellent usage-prospect in nowadays.

The present invention provides a method for manufacturing a wearing article with a high degree of freedom in design. The present invention relates to a manufacturing method of a wearing article (10). A diaper main body is formed integrally with a front part Cf covering the wearer's abdominal body, a rear part Cb covering the wearer's back body, and a crotch part CP covering the wearer's crotch. On the back part Cb of C, the waist part Ws is overlapped, and it is formed in T shape. It includes the steps of: stretching a belt-shaped elastic sheet W that can be stretched in the longitudinal direction L along the longitudinal direction L, and transporting it in the longitudinal direction L; cutting the elastic sheet W at a predetermined length to produce the waist part Ws. Steps: a step of conveying the diaper body C in such a way that the front part Cf and the rear part Cb of the diaper body C are arranged along the flow direction L; process on the back of Cb.

The invention relates to a method for preparing a polyvinyl alcohol nanofiltration membrane with high rejection coefficient by using interface control. The method comprises the following steps: processing a polysulfone base membrane with 2%-8% glutaraldehyde aqueous solution for 2-4 minutes; drying the base membrane in a shade place; coating the polyvinyl alcohol aqueous solution with a mass fraction of 1%-5% onto the preprocessed membrane for 1-3 minutes; and processing the acquired compound membrane for 2-4 hours at 90 DEG C, so as to have full cross-linking reaction between the glutaraldehyde and the polyvinyl alcohol. The prepared polyvinyl alcohol nanofiltration membrane has a rejection coefficient of 98.5% to 2000ppm sodium sulfate, a rejection coefficient of 80.1% to 2000ppm sodium chloride and a rejection coefficient of 98.7% to 2000ppm polyethylene glycol 600. The method provided by the invention is novel and simple and the repeatability of membrane property test is good.

The invention relates to a method for controlling morphology of graphene coated nano-titanium dioxide, a product prepared by the method and an application of the method, and belongs to the new technical field of a carbon quantum dot application and the technical field of a chemical power supply. The graphene coated nano-titanium dioxide of different morphological structures is obtained through control according to different carbon quantum dot concentrations, carbon quantum dots are taken as a morphological additive for inducing titanium dioxide nanocrystalline to grow into a one-dimensional nanoneedle structure, and further the titanium dioxide nanocrystalline is self-assembled into three-dimensional nano-flower-shaped structure. According to the graphene coated titanium dioxide of the nano-flower-shaped structure obtained by the method, the specific capacity of the titanium dioxide is increased, moreover, the conductivity of the graphene coated nano-titanium dioxide is greatly improved, high energy density and good cycling stability are presented in a sodium storage aspect, the graphene coated nano-titanium dioxide is characterized in simple preparation technology and low raw material cost and is applicable to commercial production.

The invention provides a preparation method of an SnSe/Graphene composite electrode material for a negative electrode of a sodium-ion battery. The method comprises the following steps: with water as a solvent, SnCl<2>.2H<2>O as a raw material and graphene oxide as carbon matrix, preparing an SnO<2>/Graphene composite material by a hydrothermal method in advance; grinding and mixing the SnO<2>/Graphene composite material and selenium powder evenly, putting the mixture into a vacuum tube furnace and carrying out heat preservation at 500-900 DEG C for 0.5-5 hours; and finally obtaining a pure-phase SnSe/Graphene composite material. The particle sizes of SnSe are 5-10nm; and the SnSe grows on the surface of Graphene. The used preparation method is simple, novel and high in repetitive rate; and the adopted vacuum calcination method is clean and free of pollution, and is suitable for the requirements of large-scale production and preparation.

The invention relates to a 3D printing method of a lithium battery. The method comprises the following steps: firstly, positive and negative slurry and diaphragm slurry required for 3D printing are prepared; secondly, each slurry is respectively printed into positive and negative electrodes of a lithium battery and an electrode diaphragm layer positioned between the positive and negative electrodes; thirdly, under the protection of argon in a test-tube furnace, heat treatment is carried out to prepare an annular electrode composite material assembled by overlapping the positive electrode, the diaphragm layer and the negative electrode; and finally, the annular electrode composite material is transferred into a glove box for packaging so as to obtain an annular lithium ion battery formed by successively overlapping the cathode, the diaphragm and the anode. The preparation method is novel, and the technology is simple, accurate and controllable. The prepared material has a special structure formed by successively overlapping the cathode, the diaphragm and the anode and has large specific surface area. Each cathode, diaphragm and anode annular material itself forms a miniature lithium ion battery. Diffusion distance of lithium ion in the material is shortened greatly, and corresponding diffusion velocity is improved. The lithium ion battery has high ionic and electronic conductivity.

The invention discloses a method for preparing a natural polyelectrolyte nanofiltration membrane and belongs to the technical field of preparation of membrane materials. According to the method disclosed by the invention, a quaternary ammonium cation cellulose ether and a quaternized chitosan blend form an ultra-thin separation layer material, polyvinyl alcohol serves as a casting solution additive, and polysulfone serves as a supporting layer material; two kinds of natural polyelectrolyte serve as a membrane material, and a cross-linking agent is added, so that the two polymers are cross-linked to form a spatial semi-interpenetrating network structure, the polymer networks are mutually tangled, and therefore, the membrane structure stability is enhanced. Meanwhile, the natural polyelectrolyte charged nanofiltration membrane has an antibacterial group capable of inhibiting and killing bacterium components in water, while the membrane structure is provided with many hydrophilic groups,and the hydrophilic property on the membrane surface is excellent. Meanwhile, the raw materials are readily available, the cellulose belongs to renewable resources, the chitosan belongs to natural polysaccharides, any risk of environmental pollution is avoided, and the preparation method is convenient and practical.

The invention relates to a polyvinylidene fluoride composite film and a preparation method thereof, wherein the polyvinylidene fluoride composite film comprises: an outer PVDF layer, a middle layer and an inner polyolefin layer, wherein the middle layer is acrylic acid Copolymer layer or olefinic copolymer layer, wherein said acrylic acid copolymer comprises ethylene-acrylate EMA, ethylene-acrylic acid EAA, ethylene-ethyl acrylate EEA, ethylene-methacrylic acid copolymer EMAA and ethylene-methyl acrylate One or more of the copolymer EMAC; the olefinic copolymer layer is one or more of the graft-modified ethylene-vinyl acetate EVA and the graft-modified polyolefin elastomer POE. The polyvinylidene fluoride composite film and its preparation method in this invention are adopted, and the solar battery back plate prepared adopts the modified PVDF composite film, which has good bonding performance and good aging resistance effect, greatly reduces the production cost of the fluorine film, and The preparation method is simple and practical, and reduces the difficulty of compounding it with other substrates.

The invention discloses a method for preparing silicon dioxide core-shell materials with core-shell spacing. The method comprises the steps that an ARGET ARTP method is adopted to graft hydrophobic butyl acrylate (BA) and hydrophilic poly(N,N-dimethylaminoethyl methacryIate)(PDMAEMA) onto the surface of SiO2 to obtain amphiphilic polymer modified SiO2-PBA-PDMAEMA which is taken as a template to hydrolyze tetraethoxysilane (TEOS), high-temperature calcination is conducted on the polymer to make the polymer disintegrated, and SiO2-SiO2 core-shell materials with the core-shell spacing are prepared. The method for preparing the silicon dioxide core-shell materials with the core-shell spacing has the advantages that the thickness of the polymer layer PBA-PDMAEMA can be adjusted by adjusting addition quantity of the PDMAEMA, and the thickness of an SiO2 shell is further adjusted; a new idea is provided for preparing the core-shell SiO2 with the core-shell spacing.

The invention relates to an M50-Ag-TiC self-lubricating composite material. An aerial main shaft bearing material, namely M50 steel, is used as a base material, and Ag and TiC are respectively used as a lubrication phase and a reinforcement phase, wherein the mass of the lubrication phase is (8.0-10.0) wt% of that of the base material; the mass of the reinforcement phase is (4.0-6.0) wt% of that of the base material. The composite material is prepared from M50 spherical powder containing Ag and TiC by adopting 3D printing. The M50-Ag-TiC self-lubricating composite material disclosed by the invention is low in friction coefficient and wear rate, so that the tribological property of M50 bearing steel can be effectively improved; a preparation method is simple and convenient, and process parameters are easy to control during preparation; and complicated mechanical parts can be manufactured, so that the M50-Ag-TiC self-lubricating composite material has important significance in industrialized application of self-lubricating materials.

The invention provides a titanium oxide columnar array/two-dimensional lamellar titanium carbide electrode material and a preparation and an application thereof. By a CHI660E electrochemical workstation, with a Ti3C2 electrode as a working electrode, Ag/AgCl/3M KCl as a reference electrode and Pt as a counter electrode, treatment is carried out in a potassium hydroxide electrolyte with certain concentration at a certain polarization current through an electrochemical cathode polarization method for a certain period of time to obtain the novel titanium oxide columnar array/two-dimensional lamellar titanium carbide electrode material with high performance. The titanium oxide columnar array/two-dimensional lamellar titanium carbide electrode material has the characteristics of being novel in preparation method, mild in reaction condition, simple and controllable in process and the like; the defect that only unordered titanium oxide can be prepared in the prior art is overcome; and a foundation is laid for further application of the ordered titanium oxide columnar array/two-dimensional lamellar titanium carbide mixed structure in other electronic devices of a lithium-ion battery and the like.

The invention relates to a preparation method of a solid proton conducting material having a wide working temperature range and the solid proton conducting material (a metal organic framework material) having the wide working temperature range prepared by the method. The method comprises the following steps: firstly, synthesizing a functional ligand having an amphoteric group; secondly, generatingreaction between the functional ligand and ZrCl4 in a high-pressure kettle to obtain a metal organic framework material MOF-MIMS; finally, adding protonic acid for powerful grinding to obtain ionic liquid-modified metal organic framework material. The preparation method disclosed by the invention is simple and high in controllability; the protonic acid is quantitatively dropwise added by measuring the size of a pore of a metal organic framework by measuring gas adsorption, so that a fuel cell proton exchange membrane material loaded with the proton acid in an ideal proportion is obtained. Bythe use of the ionic liquid-modified metal organic framework to prepare the fuel cell proton exchange membrane material, the cost is low, and the cycle performance is high. Furthermore, the material is excellent in conductivity without water within a relatively wide temperature range of -40 to 150 DEG C.

The present invention discloses regular netted porous carbide carrier suitable for catalyst and its preparation process as well as the regular photocatalyst supported with the carrier and its preparation process. The carbide carrier may be prepared directly on the supporter and has firm adhesion, high mechanical strength and high adsorption performance. The carrier is secondarily supported through coating in easy control of the carrier carbon layer thickness, and the carbonization and activation has specific surface area and pore structure of the carbide carrier capable of being regulated in a wide range, so as to prepare carrier suitable for different catalysts. The carbide carrier supported regular photocatalyst has integrated adsorption and reaction performance, possesses high light flux and low pressure drop, and may be used in the treatment of gaseous and liquid pollutant easily.

This invention relates to a spray-pyrolysis process for preparing red fluorescent powder, whose chemical formula is (Li1-aNaa) (Eu1-b-c-dSmbYcGdd)(SiO2)1/6(W1-mMom)2O8, wherein, a is 0-0.8; b is 0-0.08; c is 0-0.08; d is 0-0.08; m is 0-1. The spray-pyrolysis process comprises: weighing soluble compounds of the cations according to the above chemical formula, preparing clear precursor solution, atomizing, reacting, and collecting the red fluorescent powder. The red fluorescent powder is approximately spherical, and has such advantages as high crystallinity, uniform particle size distribution, smooth particle surface, high luminescent efficiency, and high color purity. The spray-pyrolysis process has such advantages as simple process, easy operation, and high production efficiency, and is suitable for continuous production.