34results about How to "Good prospects for industrial production" patented technology

The invention discloses a high-speed centrifugal spinning device for producing nanofiber yarn. The high-speed centrifugal spinning device is characterized by comprising a hollow rotating centrifugal column, a rotating cylinder collector, a roller, a winding unit and a transmission gear; a plurality of spray nozzles are arranged in the outer wall of the rotating centrifugal column, and the spray nozzles are communicated with a central cavity of the rotating centrifugal column through radial channels in the rotating centrifugal column; the rotating cylinder collector is located on the outer periphery of the rotating centrifugal column; the roller is located on the upper side of the rotating cylinder collector; the winding unit is located at the rear end of the roller, and the transmission gear drives the winding unit to rotate. The invention further discloses a production method of the nanofiber yarn. According to the advantages of the high-speed centrifugal spinning device in producing the nanofiber yarn, and spinning of the collector is combined technically, the nanofiber yarn which is controllable and highly oriented is obtained; the yield is greatly increased as compared with that of the nanofiber yarn obtained by other production methods, spinning quality is greatly improved, mechanical property of the nanofiber yarn is enhanced, machining reproducibility is good, and good industrial production prospect is achieved.

The invention discloses a titanium oxide porous optical catalyst and making method, which is made of nanometer titanium oxide with 0.14%-2.0% nitrogen and 1.3-19.7% phosphor to synthesize titanium based primer to sinter at 350-550 deg.c.

The invention relates to a tin-doped indium oxide (ITO)/gallium oxide (Ga2O3) double-layer structure deep-ultraviolet transparent conductive film and a preparation method thereof, and belongs to the technical field of electronic materials. The preparation method comprises the following steps: ultraviolet optical quartz glass is used as the substrate, and radio-frequency magnetron sputtering is carried out on the Ga2O3 ceramic target to prepare a Ga2O3 layer the thickness of which is 30-60 nm; and direct-current magnetron sputtering is carried out on an ITO target to prepare an ITO layer the thickness of which is 15-29 nm. The pressure intensity of argon gas for sputtering is 0.2-2 Pa, the power for radio-frequency sputtering is 50-100 W, the substrate temperature is 200-300 DEG C, the current for direct-current sputtering is 80-150 mA, and the voltage for direct-current sputtering is 200-400 V. The prepared film has the advantages of low resistivity, high transmittivity within the range of visible light, ultraviolet light and deep-ultraviolet light, and other favorable photoelectric properties. The film otained by the method of the invention has wide application prospects in the fields of ultraviolet photoelectric devices and the like.

The invention relates to a preparing method of a nanometer calcium hydroxide powder material for fixing ancient murals. The preparing method comprises the steps of firstly dissolving calcium chlorideinto water, and afterwards, adding dimethyl formamide; mixing a calcium chloride aqueous solution with a sodium hydroxide aqueous solution to prepare nanometer calcium hydroxide. By means of the preparing method, heating is not needed, preparation is conducted at the normal temperature, and synthesized nanometer calcium hydroxide has high stability, and does not precipitate for 3 months in ethyl alcohol. The synthesis process is very simple, the time is saved, and it takes less than 1 h in the whole process. Besides, the method is low in synthesis cost, overcomes shortcomings of a current method of synthesizing nanometer calcium hydroxide, and has a very good industrial production prospect. As is shown by mural reinforcing experiments, the material is suitable for reinforcing the murals ofhumid burial chambers, and particularly well protects mural efflorescent and flaking of the murals. Compared with the prior art, the preparing process of the nanometer calcium hydroxide material is very simple, the time is saved, the preparation is controllable, and the cost is low. Besides, heating is not needed, preparation is conducted at the normal temperature, and energy consumption is low.

The invention relates to a preparation method for a plurality of photoinitiators containing phosphorus. The preparation method comprises the steps of taking 2,4,6-trimethylphenyl halogen methane as a raw material, allowing 2,4,6-trimethylphenyl halogen methane to react with sodium phosphine to be oxidized, obtaining a phosphine oxide intermediate, finally, executing a key reaction step, namely the reaction that alpha-carbon is oxidized into ketone, and obtaining a high-yield target oxidation product through oxidation with an oxidizer under the action of a catalyst. The raw material required by the method is low in price and easy to obtain; process equipment is simple; and the method is easy to operate and low in cost.

The invention discloses a biochar-supported magnetic substance composite adsorption material, and a preparation method and application method thereof, and belongs to the field of water treatment. The biochar-supported magnetic substance composite adsorption material is prepared by the following steps: mixing and uniformly grinding a biomass, a cobalt salt and a nickel salt to obtain a mixture, calcining the obtained mixture under the protection of inert gas, and performing cooling. The preparation scheme requires few steps, is environment-friendly, and has broad industrial production prospect, and the biochar-supported magnetic substance composite adsorption material prepared by the preparation method has a good adsorption effect.

The invention discloses a preparation technology for increasing the effective photosensitive area of a photoelectric material or a photoelectric element. The principle of the preparation technology comprises the following steps of: controlling the quantity of exposed light beams, light beam polarization and an incident angle to obtain a micro-nano structure with different periods and characteristic sizes by laser interference photoetching; and increasing the real effective area of a P-N junction within unit area on the structure by semiconductor doping. Because the photoelectric material or the photoelectric element is manufactured by using the technology and a method, the effective photosensitive area can be increased on a large scale within the unit area, and then light absorption rate is improved; the application prospect of the technology is wider due to the properties of self cleaning and anti-reflection of the micro-nano structure; the technology is particularly applied to the field of solar batteries; and conversion efficiency is improved on a large scale.

The present invention relates to an N-substituted-4-piperidone compound and a synthesis method thereof. In the general formula of the compound, R is alkyl with a carbon number of 1-8, phenyl or benzyl, and other groups. Characteristics of the method of the present invention are: selecting appropriate primary amine and 1,5-dichloro-3-pentanone, and carrying out a ring closing reaction to prepare N-substituted-4-piperidone, wherein the selected 1,5-dichloro-3-pentanone can directly be purchased or synthesized by a two-step synthesis method, and the two-step synthesis method comprises: (1) adding thionyl chloride to acrylic acid, and carrying out an addition reaction and acyl chlorination under catalysis of N,N-dimethyl formamide to obtain 3-chloropropionyl chloride; (2) introducing ethylene gas to a dichloromethane solution of 3-chloropropionyl chloride, and carrying out a Friedel-Crafts reaction to obtain the 1,5-dichloro-3-pentanone. The method of the present invention has characteristics of wide raw material source, mild reaction conditions, simple operation, low production costs, high yield, and good industrial production prospect.

The invention belongs to a synthesis method of an ester type compound in organic chemistry and in particular relates to a method for synthesizing dialkyl carbonate from biomass-based furfural. The method comprises the following steps: firstly, taking agricultural and forest wastes as initial raw materials, carrying out acid hydrolysis and dehydration cyclization reaction and purifying to obtain furfural; carrying out oxidization reaction on the biomass-based furfural under the action of hydrogen peroxide and a catalyst to synthesize maleic anhydride; carrying out epoxidation reaction on the synthesized maleic anhydride under the action of the catalyst and the hydrogen peroxide to synthesize epoxysuccinic acid; carrying out cycloaddition reaction on the epoxysuccinic acid and CO2 to prepareannular carbonate; finally, carrying out ester exchange reaction on the synthesized annular carbonate and monohydric alcohol or polyhydric alcohol to prepare the dialkyl carbonate. According to the method provided by the invention, the cheap agricultural and forest wastes are used as the raw materials to produce the dialkyl carbonate; meanwhile, tartaric acid with high additional value is also produced; the production cost is saved and the environment pollution is reduced; a novel way is also provided for industrial production of the dialkyl carbonate and the tartaric acid and efficient and comprehensive utilization of the agricultural and forest wastes; the synthesis method has remarkable economic benefits and social benefits.

The invention relates to an organic gel with a nondestructive residue detection function for removing organic polymers on the surface of a mural and preparation and use methods thereof. Graphene quantum dots, nano calcium hydroxide and epoxy resin are added into an ethyl acetate solution to prepare the organic polymer cleaning gel. The graphene quantum dots can emit green fluorescence under ultraviolet irradiation, so that after the gel is applied to removal of polyacrylic resin, polyvinyl butyral and polyvinyl acetate on the surface of a mural, an ultraviolet lamp is utilized to irradiate the surface of the mural, and whether the gel is left on the surface of the mural or not is judged by observing whether there is green fluorescence or not. According to the method, nondestructive detection is achieved, damage to a mural caused by destructive detection of an existing infrared spectroscopy method is overcome, weak green fluorescence can be emitted from the surface of the mural when the mural is irradiated by ultraviolet light after the organic matters on the surface of the mural are removed, and gel residues can be completely removed by simply wiping the mural with a cotton swab according to the light-emitting position. The gel has an excellent industrial production prospect.

The invention discloses an integrated heteropolyacid-modified polyaniline/titanium nitride core-shell nanowire array composite material and a preparation method and an application thereof. The material comprises a carbon substrate (1), titanium nitride nanowire arrays (2) and a heteropolyacid-modified polyaniline composite film (3), wherein the titanium nitride nanowire arrays (2) directly grow on the carbon substrate (1) and are uniformly and vertically arranged on the surface of the carbon substrate; the heteropolyacid-modified polyaniline composite film (3) completely coats the surfaces of the titanium nitride nanowire arrays (2); and a heteropolyacid in the heteropolyacid-modified polyaniline composite film (3) is uniformly embedded into polyaniline to form a composite film layer. The invention further provides a detailed preparation method of the integrated heteropolyacid-modified polyaniline/titanium nitride core-shell nanowire array composite material and an application of the integrated heteropolyacid-modified polyaniline/titanium nitride core-shell nanowire array composite material in the field of electrochemical energy storage. Compared with the prior art, the composite material has the advantages that the heteropolyacid is immobilized by using the polyaniline, so that the problem that the heteropolyacid is easily dissolved into a water solution and cannot be easily used for an electrode material is effectively solved; and meanwhile, the capacity property of the polyaniline is improved.