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238results about How to "The preparation process is simple" patented technology

Nano-paste, self-cleaning coating liquid and thermal insulating coating liquid as well as transparent substrates and preparation methods thereof

The invention discloses a nano-paste, a self-cleaning coating liquid and a thermal insulating coating liquid as well as transparent substrates and preparation methods thereof. The formula of the nano-paste comprises the following components in parts by weight: 5-25 parts of nano-powder, 1-25 parts of wetting agent, 1-25 parts of active dispersant and 10-200 parts of dispersion medium, wherein the nano-powder is a photocatalyst powder or a thermal insulating powder; the solid content of the nano-powder is 5-50wt%; the particle size distribution of particles in the nano-paste is 10-200 nanometers. The self-cleaning coating liquid and the thermal insulating coating liquid are obtained by firstly preparing stable nano-photocatalyst paste and nano-thermal insulating paste and then compounding the stable nano-photocatalyst paste and nano-thermal insulating paste with film forming matters such as inorganic sol and organic resin. The coating liquids can be applied to the surfaces of different transparent substrates by use of a plurality of different construction methods, so that transparent materials having double functions of self-cleaning and thermal insulation can be obtained; as a result, large-scale preparation of multifunctional transparent coated materials, such as multifunctional coated glass, is realized.
Owner:张扬 +2

Preparation method of high-strength high-swelling nanocellulose and polyving akohol composite hydrogel

InactiveCN105153438AImprove strength and swellingThe preparation process is simpleIonBiomass
The invention discloses a preparation method of high-strength high-swelling nanocellulose and polyving akohol composite hydrogel. The method comprises the following steps that nanocellulose suspension is added in dimethyl sulfoxide solvent, and magnetic stirring is conducted to prepare mixed dispersion liquid; polyving akohol is added, and magnetic stirring is conducted for 3 h on the condition that the temperature is 95 DEG C; standing is conducted for 30 min at the constant temperature of 60 DEG C, the dispersion liquid is placed at the constant temperature after being frozen at low temperature, and freezing and thawing circulation is conducted for 5-8 times; obtained hydrogel is put in deionized water to swap out the dimethyl sulfoxide solvent in the gel, and the nanocellulose and polyving akohol composite gel is obtained. According to the preparation method of the high-strength high-swelling nanocellulose and polyving akohol composite hydrogel, reactions are physical reactions, and pollution to the environment in the preparation process is extremely low; by means of a mixed solvent system of dimethyl sulfoxide and water, formation of a uniform network structure of the nanocellulose and polyving akohol gel can be effectively facilitated, the formed three-dimensional interpenetrating network structure can effectively improve the strength and the swelling degree of the gel, the dimethyl sulfoxide can be directly swapped out from the gel after the reaction is completed, and the obtained biomass gel is free of toxicity and pollution.
Owner:NANJING FORESTRY UNIV

Li2S-P2S5-TiS2 amorphous electrolyte material

ActiveCN103401017AHigh room temperature ionic conductivityThe preparation process is simpleSecondary cellsIonTube furnace
The invention relates to a Li2S-P2S5-TiS2 amorphous electrolyte material with high room-temperature ironic conductivity, and belongs to the field of preparation of lithium ion battery related materials. The Li2S-P2S5-TiS2 amorphous electrolyte material is prepared by application of high-energy ball milling and low-temperature solid-phase reaction, and a preparation method of the Li2S-P2S5-TiS2 amorphous electrolyte material comprises following steps: in a glove box with argon protective atmosphere, three raw materials Li2S, P2S5 and TiS2 are mixed uniformly at a mole ratio of 34:15:1; agate balls are placed in a ball milling tank, and the mixture of the three raw materials is sealed in argon protective atmosphere, and is subjected to high-energy ball milling treatment; samples after ball milling treatment are added into a tube furnace, and is sintered at 300 DEG C for 3h in argon atmosphere so as to obtain the Li2S-P2S5-TiS2 amorphous electrolyte material. The Li2S-P2S5-TiS2 amorphous electrolyte material is prepared by combining high-energy ball milling and low-temperature solid-phase reaction, so that the Li2S-P2S5-TiS2 amorphous electrolyte material possesses relatively high room-temperature ironic conductivity, preparation technologies are simple, and reaction conditions are mild.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY

Preparation method of ferroferric-oxide-based high-performance negative electrode material for lithium ion battery

The invention discloses a preparation method of ferroferric oxide/carbon composite negative electrode material for a lithium ion battery, and belongs to the field of new energy resources and electrochemistry. According to the invention, a Fe3O4/C composite negative electrode material with a nano porous structure is prepared by taking inorganic iron salt as an iron source, taking a carbon matrix as a carrier, and adopting a solvothermal method. The carbon matrix is directly introduced into reaction liquid, transformation of the spherical structure of carbon particles occurs in the solvothermal process, and active substances of nano iron oxide are absorbed on the surfaces of the porous carbon particles so as to form the Fe3O4/C composite negative electrode material with an embedding structure; the carbon matrix is used for fixing the nano iron oxide particles to improve the structural stability of the electrode on one hand, and forms a conducting network to be beneficial to fast transmission of electrons on the other hand, so that the polarization of the electrode is reduced and the rate capability of the electrode is improved. The ferroferric oxide/carbon composite negative electrode material synthesized according to the invention has the advantages that the particle powder is fine and is distributed uniformly, the preparation process is simple, the condition is mild, the cost is low and the electrochemical performance is excellent.
Owner:加道材料科技嘉兴有限公司

Polymer dispersed liquid crystal material, display apparatus containing same and preparation method thereof

The invention relates to a polymer dispersed liquid crystal (PDLC) material which is low in voltage and wide in temperature mode, wherein the material consists of a liquid crystal material, an aliphatic polyurethane acrylate oligomer, an acrylate monomer, a photoinitiator and interstitials. The invention further provides a polymer dispersed liquid crystal display apparatus prepared by using the polymer dispersed liquid crystal material and a preparation method thereof. The polymer dispersed liquid crystal material provided by the invention has the advantages of wide raw material source and simple and convenient preparation process. The PDLC display apparatus prepared from the PDLC material has the advantages of low driving voltage, wide range of working temperature, no shrinkage and deformation and good adhesive force. The preparation method of the PDLC display apparatus is simple and convenient, the thickness of the display apparatus can be adjusted according to size of the interstitials added, and the display apparatus obtained is good in adhesive force and not easy to shrink and deform, so that the PDLC display apparatus with a large area can be probably prepared.
Owner:BEIJING BAYI SPACE LCD MATERIALS TECH

Gold micro-nano composite structure array and preparation method thereof

The invention discloses a gold micro-nano composite structure array and a preparation method thereof. The array is a gold bowl array or a gold hollow sphere array disposed above a gold film covered on a substrate, wherein the diameter of a gold bow opening is from 500 nanometers to 10 micrometers, a bowl wall is composed of gold rods, the lengths of the gold rods are 100-1000 nanometers, the diameters of the gold rods are 50-400 nanometers, the inner diameter of a gold hollow sphere is from 500 nanometers to 10 micrometers, a sphere casing is composed of gold particles with diameters of 50-600 nanometers, and the thickness of the gold film is 5-25 nanometers. The preparation method includes sputtering a layer of the gold film on the substrate, placing a single layer colloidal crystal template which is composed of polystyrene colloidal spheres with diameters from 500 nanometers to 10 micrometers on the substrate which is covered with the gold film, then placing the substrate covered with the gold film and the colloidal crystal template into a chloroauric acid solution with concentration of 0.3-0.7g/L, using the solution with the substrate as a working electrode, subjecting the mixture to electro-deposition for 2-8 hours under the deposition electric current density of 0.03-0.05mA/cm<2> or 0.15-0.45mA/cm<2> to obtain a complex array, and placing the complex array in a dichloromethane solution for to removing the polystyrene colloidal spheres to obtain target products. The gold micro-nano composite structure array can be used as a surface enhanced raman scattering active substrate.
Owner:HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI

Compound concrete admixture with early strength and water reduction functions, and preparation method and application thereof

ActiveCN104030595AExcellent early strength performance and water reducing effectThe preparation process is simpleMother liquorCement Material
The invention discloses a compound concrete admixture with early strength and water reduction functions. The compound concrete admixture is mainly prepared by 10-20 parts by mass of a polycarboxylate water-reducer, 1-5 parts by mass of a surfactant, 5-40 parts by mass of an early strength agent, 2 or less parts by mass of an air entraining agent, and 20-100 parts by mass of water. The preparation method of the compound concrete admixture comprises the following steps: processing a polycarboxylate water-reducer mother liquor to prepare a solution, mixing the polycarboxylate water-reducer solution with the early strength agent, the surfactant, the air entraining agent and water according in proportion, and uniformly stirring. The application of the concrete admixture is realized through the following steps: stirring the concrete admixture and standard sand; taking cement and water, and carrying out low-speed uniform mixing; mixing the above two materials, carrying out low-speed stirring, then carrying out high-speed stirring, intermediately stopping, and then continuously carrying out high-speed stirring; and adding the finally obtained mixture into a mold, and maintaining, wherein the addition of the polycarboxylate water-reducer is not greater than 1% of the amount of a cement mortar. The compound concrete admixture has the advantages of simple preparation method, fast effectiveness, wide application range, low cost and good effect.
Owner:重庆市宝霸石材有限公司

Long-service-life and high-specific-capacity poly-dopamine-coated hollow sulfur microsphere composite positive electrode material and preparation method thereof

The invention discloses a long-service-life and high-specific-capacity poly-dopamine-coated hollow sulfur microsphere composite positive electrode material and a preparation method thereof. The preparation method comprises the following steps: preparing hollow sulfur microspheres through reaction of a surfactant, a sulfur-containing agent and acid; dispersing the hollow sulfur microspheres in a poly-dopamine water solution and after the reaction is finished, filtering, washing and carrying out vacuum drying a product to obtain the poly-dopamine-coated hollow sulfur microsphere composite positive electrode material. The preparation method has the advantages of the preparation process is simple, the operation is convenient and material performance is excellent; the prepared poly-dopamine-coated hollow sulfur microsphere composite positive electrode material is high in discharge specific capacity and good in cycling performance. is used as a positive electrode material of a lithium sulfur battery, the composite material has a wide application prospect in mobile communication, portable electronic devices, electric automobiles, energy storage and the relevant fields.
Owner:GUANGZHOU HKUST FOK YING TUNG RES INST

Preparation method of one-dimensional scale limited graphene nano band

The invention discloses a preparation method of a one-dimensional scale limited graphene nano band, which comprises the steps of: providing a transition metal substrate; coating photoresist on the surface of the transition metal substrate to form a photoresist layer; transferring a defined pattern to the photoresist layer through exposure development to form a photoresist graph; with the photoresist layer as a mask, carrying out carbon ion injection in the transition metal substrate to form a carbon ion injection region; figuring out an injection angle for the carbon ion injection according to the graphene width in combination with the thickness of the mask of the photoresist layer and the width of the photoresist graph; and removing the photoresist layer; and carrying out thermal annealing, separating carbon atoms from the carbon ion injection region for reconstruction, and forming the one-dimensional scale limited graphene nano band with a width of close to even less than 10nm on the surface of the transition metal substrate. Compared with the prior art, the preparation method is used for preparing the graphene nano band by carrying out carbon ion injection at a calculated specific injection angle, and has the advantages of accuracy in preparation, simple preparation process and high yield.
Owner:SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI

Graphene oxide conductive adhesive and preparation and using method of graphene oxide conductive adhesive

The invention discloses a graphene oxide conductive adhesive and a preparation and using method of the graphene oxide conductive adhesive and relates to a conductive adhesive and a preparation and using method of the conductive adhesive. The invention aims to solve the technical problems that the conventional adhesive and conductive adhesive are complex in preparation process and the conductive adhesive is low in conductivity and low in tolerance to acid or alkaline and oxidizing conditions. The adhesive is viscous dispersion liquid formed by dispersing graphene oxide in water or/and an organic solvent. The preparation method comprises the following steps: adding the graphene oxide into the water or/and the organic solvent, and obtaining graphene oxide slurry; ultrasonically stripping and dispersing under ultrasonic conditions, and obtaining dispersion of the graphene oxide; evaporating and concentrating, ultrasonically stripping and dispersing, and obtaining the graphene oxide conductive adhesive. The using method comprises the following steps: uniformly coating the graphene oxide conductive adhesive to a connecting face of two structure bodies needed to be connected, and obtaining a pre-connecting piece; and reducing after drying, and finishing conductive connection. The graphene oxide conductive adhesive can be used for electrode adhesion.
Owner:HARBIN INST OF TECH

Production method for tin-copper-cobalt ternary alloy cathode material of lithium ion battery

The present invention discloses a preparation method of lithium-ion battery by Sn-Cu-Co alloy negative-pole materials, pertaining to the art of lithium-ion battery technology. The method is a carbon thermal reduction method to calculate the amount of Sn, Cu and Co oxides according to the Sn/(Cu+Co) atomic ratio of 3:1-2:3; wherein, the atomic ratio of Cu/Co is 5:1-1:5; the amount of carbon powder is calculated in terms of CO which is reduced from the oxygen in all oxides. After being evenly mixed and ground, the raw material is placed in a flowing protection atmosphere so as to rise to the required target temperature at a heating rate of 2-30 DEG C per minute and after a certain time of insulation, the temperature of the raw material declines to the room temperature with the cooling of furnace. The present invention has the advantages of low material cost, simple preparation process, less time consumption, high yield, good safety, great application value in material preparation and suitability for mass production. The Sn-Cu-Co alloy has the advantages that crystallization is higher; the inside is full of micron particles in a loose structure with a smaller surface, which are difficult to reunite in the electrode cycling process; the existence of the two non-active components Cu and Co greatly releases the volume changes in the electrode cycling process and is conducive to enhancing the stability of the electrode cycling.
Owner:UNIV OF SCI & TECH BEIJING
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