722results about How to "Simple preparation conditions" patented technology

The present invention also provides a dynamic on-line order gathering system that enables sellers to offer one or a combination of goods whose availability (production and / or shipping) may be economically linked in some ways with other items and which facilitates aggregation of demand across related items so as to enable the ability to reach critical mass of demand for the related goods by a more efficient means than currently available.

The invention discloses an oxygen-doped carbon nitride / zinc oxide photo-catalyst as well as a preparation method and application of the oxygen-doped carbon nitride / zinc oxide photo-catalyst. The preparation method comprises the following steps: taking dicyandiamide or melamine as a precursor, calcining to prepare a carbon nitride nanosheet; adding a zinc oxide precursor into absolute ethyl alcohol, then adding dethylenetriamine, carrying out ultrasonic dispersion and subsequently enabling dispersion liquid to be subjected to hydrothermal reaction, so as to obtain zinc oxide nano material; enabling the zinc oxide nano material and the carbon nitride nanosheet to be subjected to ultrasonic dispersion in deionized water, subsequently adding hydrogen peroxide, then carrying out hydrothermal reaction again, and thus obtaining the oxygen-doped carbon nitride / zinc oxide photo-catalyst after the reaction is ended. The oxygen-doped carbon nitride / zinc oxide photo-catalyst adopts low-cost and easily available raw materials; the preparation condition can be easily achieved; the raw materials do not need to be calcined under the condition of high temperature, so that the cost for preparing the oxygen-doped carbon nitride / zinc oxide photo-catalyst is reduced, and the popularization and application of the preparation method are facilitated; meanwhile, the photo-catalyst is low in photo-production electron-cavity compounding efficiency and high in photo-catalytic activity.

The invention discloses a continuously-produced full-degradable starch-based plastic alloy and a preparation method thereof. The starch-based plastic alloy contains the following components in parts by weight: 40-90 parts of starch, 5-60 parts of poly(butylene succinate), 5-60 parts of polylactic acid, 10-40 parts of plasticizer, 0.1-10 parts of compatibilizer and 1-10 parts of processing acid. The preparation method comprises the steps of mixing starch, plasticizer and part of processing aid, and extruding to obtain thermoplastic starch particles; then, mixing the thermoplastic starch particles with poly(butylene succinate), polylactic acid, compatibilizer and the residual processing aid, and extruding to obtain the starch-based plastic alloy. The starch-based plastic alloy disclosed by the invention is favorable in hydrophobicity and strength, good in component compatibility, favorable in thermoplastic processability, capable of realizing continuous production and processing as well as simple and feasible in technical process.

The invention discloses a carbon nitride-modified titanium dioxide super-hydrophilic porous film as well as a preparation method and an application thereof. The method comprises the following steps: with dicyandiamide or tripolycyanamide as a precursor, calcining to prepare a carbon nitride nanosheet; dispersing the carbon nitride nanosheet in absolute ethanol so as to obtain a carbon nitride dispersion liquid, then adding a titanium dioxide precursor, diacetone and alcohol amine, uniformly stirring to obtain a uniform solution, dropwise adding the mixed liquid prepared from the absolute ethanol, water and acid into the uniform solution so as to obtain carbon nitride / titanium dioxide composite sol, aging for a period of time, coating the carbon nitride / titanium dioxide composite sol on a preprocessed substrate, carrying out drying and ultraviolet irradiation, so as to obtain the carbon nitride-modified titanium dioxide super-hydrophilic porous film. The carbon nitride-modified titanium dioxide super-hydrophilic porous film is prepared from the raw materials which are cheap and easily available, the preparation condition is easy to realize, and the film can be obtained without carrying out high-temperature calcining, so that the preparation coat of a super-hydrophilic film product is lowered, and the popularization and application of the technique is benefited.

The invention relates to a lanthanum-modified nickel-copper octanol hydrorefining catalyst, preparation and application thereof. The catalyst is prepared by taking Gamma-Al2O3 as a carrier, taking lanthanum as an auxiliary agent, taking nickel-copper as a active component and adopting an immersion method; and the aluminum oxide accounts for 40-90%in the terms of 100% by mass, the content of nickel is 1-40% in the terms of NiO, the content of copper is 1-30% in the terms of CuO, and the lanthanum as the auxiliary agent is 0.1-10% in the terms of La2O3; and a hydrogenation evaluation result indicates that the catalyst is reduced at a temperature of 350-550 DEG C, and under the conditions that the reaction temperature is 120 DEG C, the reaction pressure is 2.5MPa, the volume ratio of hydrogen to liquid is 8:1 and the volume air speed is 3.0h<-1>, the hydrogenation rates of unsaturated substances such as octylene aldehyde, isooctyl aldehyde and octylene alcohol are all more than 95%.

The invention discloses a silane terminated polyurethane oligomer and its preparation method. The method comprises the following steps: dehydrating polyether polyol under vacuum condition, degassing, and then cooling to the temperature of 50-100 DEG C; adding a micromolecule chain extender through drying treatment, a solvent through drying treatment, diisocyanate and a catalyst in polyether polyol in order, introducing high purity nitrogen as reaction protection gas, uniformly stirring, insulating at the temperature of 50-90 DEG C, and synthesizing the terminated isocyanate polyurethane prepolymer; reacting the terminated isocyanate polyurethane prepolymer and secondary amine silane, stirring at the temperature of 10-90 DEG C under the protection of high purity nitrogen, completing the reaction until no isocyanic acid is exsited in a system through titration, and removing bubbles under vacuum to obtain the silane terminated polyurethane oligomer. The process for terminating and modifying the polyurethane prepolymer by secondary amine silane is easy to controlled, no gelation phenomenon is generated, and the reappearance is good while the product is prepared.

The invention discloses a MOF (metal-organic framework) and polyurethane crosslinked membrane as well as a preparation method and an application thereof. Post-synthesis modification is performed on active amino or hydroxyl on MOFs through a polyurethane prepolymer, nanocrystals of the MOFs are linked under the covalent bond function of active amino or hydroxyl and polyurethane prepolymer, so that the compatibility and the acting force between the MOFs particles and a polymer chain are improved, modified MOFs derivatives are endowed with excellent flexibility and a film-forming property, and a new method for preparing MOFs membrane devices is established. The synthesized MOFs membrane material has good selective separation effect on dye molecules in water and has great application prospects in the membrane separation field.

The invention relates to a method for preparing a reduced-oxidized graphene / Fe3O4 / Ag nano composite wave-absorbing material. The method comprises the following steps: preparing GO / Fe3O4 by using a simplified coprecipitation method, and preparing the RGO / Fe3O4 / Ag ternary composite material by employing a wet chemical reducing method. The preparation method is simple and rapid, large-scale production can be realized, the prepared composite material is good in wave-absorbing performance, and different wave bands can be effectively absorbed by adjusting the ratio of RGO to Fe3O4 to Ag, the amount of the reducing agent and the thickness of the composite material.

The invention discloses an octanol hydrorefining catalyst, which belongs to the field of hydrorefining catalytic materials. The prepared catalyst is used for modifying a carrier by using a rare earth element, reducing the amount of an active component of a nickel ion entering a carrier framework and improving the content of surface nickel species; the active component is loaded by adopting a hydrothermal deposition method, the dispersion of nickel salts on the surface of a carrier pore canal by using hydrothermal high-temperature and high-pressure conditions and forming nickel precipitation with proper size at the loading initial period of the active component by using a deposition reaction, so the invention can effectively control the amount of the nickel ions entering the carrier, improve the content of the surface nickel species and simultaneously can avoid the growth of nickel oxide particles; and the catalyst greatly increases the surface nickel active site, effectively improves the utilization rate of the active component of nickel and has higher catalytic reaction activity during hydrorefining the octanol at higher airspeed. The result shows that the hydrogenation rate of an unsaturated substance in crude octanol reaches over 90 percent when the temperature is 120DEG c, the pressure is 2.5MPa, the ratio of hydrogen to liquid for feeding is 8:1 and the airspeed is 30<-1>hour.

The invention discloses a method for preparing silicon-based nano-scale ordered porous silicon, comprising the following steps of: (1) ultrasonically washing an n-shaped one-side polished monocrystalline silicon piece in an acetone solvent, absolute ethyl alcohol and de-ionized water sequentially; and (2) preparing a porous silicon layer on the polished surface of the silicon piece by a double-tank electrochemical corrosion method, taking the aqueous solution of hydrofluoric acid having the mass fraction of 5-9% as corrosive liquid, and applying corrosion current, wherein the density of the corrosion current is 75-155 mA / cm<2>, and the corrosion time is 5-30 min; and the process is performed at the room temperature without illumination. The method disclosed by the invention is simple, quick, effective and practicable, and high in operability; and the bore diameter of the obtained porous silicon is at hundred-nanometer scale, and has the characteristics of high porosity and highly ordered pore canals. The method is capable of achieving the purpose of the silicon-based nano-scale ordered porous silicon by controlling the concentration of the hydrofluoric acid, the corrosion current density and the corrosion time; and the silicon-based nano-scale ordered porous silicon is an ideal material for preparing biological and chemical sensor elements.

The invention provides a method for preparing a hexagonal boron nitride film. The method comprises the following steps of firstly preparing a copper-nickel alloy foil as a substrate; placing the substrate into a chemical vapor deposition cavity with the pressure intensity of 20-5000 Pa to preserve the temperature of the substrate between 950 DEG C and 1090 DEG C; introducing a source substance with the temperature of 50-100 DEG C, and introducing a protective gas to grow for 10 minutes-3 hours so as to prepare the hexagonal boron nitride film on the surface of the copper-nickel alloy foil substrate. The method provided by the invention can be used for preparing hexagonal boron nitride crystal domains with different sizes and continuous films with different thicknesses on the copper-nickel alloy foil substrate by controlling growth parameters. The prepared hexagonal boron nitride crystal domains can achieve the maximal side length of hundreds of micrometers, have the advantages of good crystallinity, simple preparation condition, low cost, wide window of a condition parameter required by growth and good repeatability and lays the foundation for the wide application of the hexagonal boron nitride film in the fields of a graphene device and the like.

The invention discloses a siloxane group contained bifunctional light initiator initiated polymerized ultraviolet light cured acrylic ester / silicon dioxide nanometer hybrid material and a preparation method thereof. The preparation method is characterized by comprising the following steps of: firstly, preparing a light initiator with a sulfhydryl group by adopting sulfhydryl carboxylic acid and a hydroxyl functional light initiator; then reacting the light initiator with a silane coupling agent to obtain a siloxane group contained bifunctional light initiator; and mixing the bifunctional light initiator with an acrylic ester monomer, an acrylic ester low polymer and a tetraethyl orthosilicate prepolymer to prepare an ultraviolet light curable acrylic ester / silicon dioxide nanometer hybrid coating of the invention. The ultraviolet light cured acrylic ester / silicon dioxide nanometer hybrid material obtained through the irradiation of a medium-pressure mercury lamp for the hybrid coating has good physical and mechanical performance and heat resisting property and wide industrial application prospect. The preparation method of the invention has simple and easy operation and can obtain an organic-inorganic nanometer hybrid coating with excellent dispersibility and better two-phase compatibility.

The invention discloses a high-quality inorganic perovskite film, a preparation method thereof and an application of the high-quality inorganic perovskite film as an absorbing layer to solar cells. A good solvent of an inorganic perovskite precursor and a mixed solvent of an organic solvent with volatility slower than that of the good solvent and capacity of increasing solubility of the precursor are introduced in the preparation process of the high-quality inorganic perovskite film; the uniform, dense and continuous inorganic perovskite film can be obtained by adjusting a ratio of the two solvents according to the characteristics that the mixed solvent is slower to volatilize and can increase the solubility of the precursor, the concentration of an inorganic perovskite material precursor solution can be remarkably increased by the mixed solvent, and the short-circuit current density of the inorganic perovskite solar cells prepared from the inorganic perovskite film is increased. The preparation method has the advantages of adopting mild preparation conditions and simple preparation steps, being convenient to operate, low in cost, low in energy consumption and the like, and the preparation method is suitable for industrial production.

The present invention relates to a flexible stress sensor. The flexible stress sensor comprises two sensing assemblies; each sensing assembly includes a flexible fiber wire and a nanostructured film coating the flexible fiber wire; the flexible fiber wire is made of a conductive material or the surface of the flexible fiber wire is provided with a conductive layer; the nanostructured film is made of a conductive material or a semiconductor material; the two sensing assemblies are cross-stacked; and the nanostructured films of the two sensing assemblies contact with each other at the intersection of the two sensing assemblies. The present invention also relates to a preparation method of the flexible stress sensor. The flexible stress sensor of the invention has the advantages of small size, high resolution, high sensitivity and simple preparation, is suitable for being applied to miniaturized and integrated equipment and can be used for making wearable equipment for detecting human health.

The present invention is process of preparing nanometer copper powder and copper slurry with high antioxidant performance. The process includes solvent replacement, the first reduction, the second reduction, separation, drying and other steps. The present invention has the features of simple preparation process at normal temperature and normal pressure, low production cost, the effective protection of produced nanometer copper particle in organic phase, small copper powder size, environment friendly preparation process, etc. The prepared nanometer copper powder and copper slurry may be applied in producing large scale PCB, conducting ink, multilayer ceramic capacitor, etc.

A copper ion fluorescent probe and a preparation method and the use thereof relate to a fluorescence molecule probe, in particular to a copper ion fluorescence molecule probe and the preparation method and the application of the probe in the identification and detection of heavy metal. A copper ion fluorescence molecule probe with better effect which can test the heavy metallic copper ions in aqueous solution and the preparation method and the application are provided. Polyethyleneimine is allocated to be polyethyleneimine solution; the polyethyleneimine solution is taken out, filtered and poured into the lining of polytetrafluoroethylene which is sealed by a stainless steel cover; a solvent is distilled after reactions and the yellow viscous liquid-like copper ion fluorescent probe is gained. The copper ion fluorescent probe can be applied to the detection of the heavy metallic copper ions, in particular to the detection of the copper ions in biological tissues and environmental wastewater.

A covering device for floor coverings (2) is described with a profiled cover (4) that is provided with one covering flange (6) and at least one clamping web (7) which protrudes downward from the covering flange (6), extends in the longitudinal direction of the profiled cover (4), and is used for fastening the profiled cover (4) in a fixture (9), with said device also comprising a compensating strip (5) that can be employed if desired, by being fastened to the profiled cover (4) by means of a form-fitting tongue and groove joint connecting to the underside of the covering flange (6). In order to provide advantageous manufacturing conditions it is proposed that the profiled cover (4), developed from an extruded profile, is provided with a tongue and groove joint formed by at least one longitudinal groove (14) for retaining a lug (15) of a compensating strip (5) also developed from an extruded profile.

The invention discloses a sepiolite modification method and application of modified sepiolite to wastewater treatment. Cellulose and molysite are jointly adopted for modification of sepiolite, and the method particularly includes acid treatment of the sepiolite and joint hydrothermal reaction of acid-modified sepiolite, the cellulose and the molysite. The preparation method is quite simple, mild in preparation condition, low in related reaction temperature and low in energy consumption. The cellulose for modification is low in cost, the molysite can be combined with the sepiolite to improve adsorption effects and also plays a role in catalysis in a hydrothermal synthesis process to enhance catalysis effects, and utilization of toxic catalysts such as ammonium ferrous sulfate hexahydrate is avoided. The modified sepiolite prepared according to the method is excellent in performance and high in adsorption rate of heavy metals and organic pollutants such as phenol.

This invention relates to the organic electroluminescent component with enhanced ligh-emitting efficiency and brightness; solving the problems of prior art products of lower efficiency and short service life, due to the unbalance between the injection and transmission of electron and hole. In this invention, ITO anode is modified by metal nanometer spots modified by self-package molecules. This inventive component involves successively: an electroconductive glass ITO anode layer, a metal nanometer spots modified by self-package mono-molecules, a hole-transmission layer, a light-emitting layer, an electron-transmission layer, a metal cathode. The method for producing the inventive products is simple and suitable for commercial production.

The invention provides a method of preparing a carbon nano pipe load hydrous ruthenium oxide composite material. First, an electric deposition solution is prepared, and then the carbon nano pipes are spread in the main solution; the ruthenium hydroxide is deposited and loaded on the carbon nano pipes through the electric deposition method, to form the precursor of the carbon nano pipe load hydrous ruthenium oxide composite material; the carbon nano pipes / ruthenium hydroxide settling after the electric deposition are put into a drying box to receive heat treatment, and after natural cooling, the carbon nano pipe load hydrous ruthenium oxide nano powder composite material is obtained. The invention has simple preparing conditions, easy to realize, does not include the complicated technology of re-oxidation treatment after traditional deposition of ruthenium trichloride and alkalinesubstance, so as to prevent introduction of impurity ion, make sure of high purity of products, prevent deficiencies of low output and difficulty in realizng industrialization, can prepare a large amount of carbon nano pipe / hydrous ruthenium oxide compound powder, and helps in industrial large-scale production.

The invention belongs to the technical field of catalytic materials and particularly relates to a hydrogen evolution reaction catalyst nanosheet layer-graphene three-dimensional composite material and a preparation method thereof. A hydrogen evolution reaction catalyst nanosheet layer and graphene sheets are assembled into a three-dimensional network structure with a solvent-thermal method, the three-dimensional network structure is used for improving the electronic conduction efficiency of the hydrogen evolution reaction catalyst nanosheet layer and promoting contact of the catalyst nanosheet layer with an electrolyte and an electrode so as to improve the catalytic efficiency; besides, the specific surface area and the catalytic active sites of the catalyst can be increased with a mixed solvent-thermal method, and finally, the catalytic activity of the catalyst is improved. The hydrogen evolution reaction catalyst nanosheet layer-graphene three-dimensional composite material and the preparation method thereof have the advantages of convenience in operation process, simple preparation conditions, lower production cost, easiness in batch production and broad industrial application prospects.

A process for preparing microspheres of TiO2 / SiO2, aerogel includes such steps as dissolving TiOSO4 in deionized water, adding ammonia water to make pH=7-8, depositing, washing deposit, adding nitric acid, stirring to obtain TiO2 sol, mixing Si sol with nitric acid, adding alcohol to obtain SiO2 alcohol sol, mixing it with said TiO2 sol, adding formamide and epoxy propane, mixing to obtain TiO2 / SiO2 sol, mixing heptane or hexane, Span-80, tween-85 and butanol or hexanol, stirring to obtain oil phase, adding TiO2 / SiO2 sol, adding ammonia water to make pH=7-1, centrifugal separation of target microspheres, washing and drying.

The invention discloses a method for preparing the carrier catalyst which can be used in aminoethyl alcohol dehydrogenation reaction to prepare the iminodiacetic acid, and relative usage. It comprises following steps: using the copper salt and nickel salt as main raw material, via dipping, drying, high-temperature baking and programmed increasing temperature, to from said catalyst nanometer copper nickel composite catalyst, then using said catalyst in aminoethyl alcohol dehydrogenation reaction to prepare the iminodiacetic acid. Said inventive catalyst has higher reaction activity. And the raw materials are easily to be attained, the producing cost is lower, and it has better application prospect.

The invention discloses a preparation method for a graphene oxide modified polypropylene fiber. The invention aims to solve the problem that graphene oxide is difficult to disperse in polypropylene group. According to the method provided by the invention, xylene and ethyl alcohol are taken as solvents for effectively dispersing graphene oxide in polypropylene and graphene oxide exists in the polypropylene material in a multilayer form. A compound material acquired by mixing is prepared into a compound material master batch through a pelletizer. The polypropylene fibers are spun through a melt spinning machine. The thermal stability and tensile property of the prepared graphene oxide modified polypropylene fiber are greatly increased. The method has the advantages of easy operation and simple technique.

The invention discloses a metal wear resistant repairing composite coating material and a preparation method of the metal wear resistant repairing composite coating material, wherein the metal wear resistant repairing composite coating material comprises a main agent which is prepared by mixing a silane coupling agent, epoxy resin, diisoamyl naphthalene, silicon carbide particles, aluminium oxide powder and fumed silica, and a curing agent which is prepared by mixing a silane coupling agent, triethylenetetramine, N-aminoethyl piperazine, aluminium oxide powder and fumed silica. A two-component room temperature curing composite coating with good anti-corrosion performance and abrasive resistance is prepared by optimizing the performance of epoxy coating inorganic powder filled and modified with inorganic powder, the prepared wear-resistant coating has good bonding effect to the metal, the cured coating has excellent abrasive resistance and can be applied for building and repairing the inner layer of a liquid slurry delivery pump, and an anti-corrosion wear-resistant coating of blades, and building an anti-corrosion wear-resistant coating of the inner surface of a gas transmission pipeline, a powder transmission pipeline and a liquid transmission pipeline.

The invention relates to a preparation method of a catalyst i.e., supported transition metal chrome with a carrier of a ceria-zirconia solid solution, and application of the catalyst in selectively catalytic oxidizing NO in flue gases. The preparation method of the catalyst comprises the following steps: 1, that cerium nitrate and zirconium oxychloride are dissolved in deionized water and stirred, and are dried and calcinated after fully reaction, thereby obtaining the carrier of the ceria-zirconia solid solution; and 2, that chromic nitrate and the ceria-zirconia solid solution are dissolved in water and stirred, and are dried and calcinated after fully reaction, thereby obtaining the catalyst Cr / CexZr1-xO2. The catalyst prepared in the invention increases superoxide radicals to the carrier which is used for catalytic oxidizing NO, thereby assisting migration and diffusion of bulk phase oxygen, and facilitating the NO to be oxidized on carrier surface. Thus, the catalyst has good capability of catalytic oxidizing NO.

The invention relates to anti-Ag diffusion phototonus electro-conductive slurry and a preparation method thereof. The anti-Ag diffusion phototonus electro-conductive slurry contains the following ingredients (based on weight percentage): 50-80%of Ag power, 2-20%of function metal powder, 2-15%of adhesion promoter and 16-30%of photosensitive organic system. The function metal powder is the powder of zincum, stannum, bismuth or plumbum or the mixture of two or more of above metals. The photosensitive organic system contains photopolymerization initiator monomer, active thinner, preformed polymer and inert solvent. The conditions for the preparation method are easy to reach and the invention can effectively prevent the Ag from diffusing into the transparent medium layer if the phototonus electro-conductive slurry is used to prepare a BUS conductive electrode and an ADD conductive electrode for a plasma display, thus avoiding the phenomenon that the transparent medium layer turns yellow and remarkably improving the image display quality of the plasma display.