56results about How to "Overcoming process complexity" patented technology

The invention discloses a method for preparing monopotassium phosphate by using wet-process phosphoric acid. The method comprises the following steps: reacting carbonyl diamide and wet-process phosphoric acid to obtain an intermediate; reacting the intermediate and potassium hydroxide to prepare a monopotassium phosphate product. The method has the advantages of short process route, low energy consumption, stable product quality, low production cost, convenience in operation and safety in production. A side product, namely, slurry can be recycled completely, an entire production process is environment-friendly, clean and free from pollution, and no waste gas, waste water or waste residues are discharged. A response is made to the policy calling of energy saving, emission reduction and clean production, the problems of complex process, instable product quality, high energy consumption and environmental pollution existing in the prior art are solved, and the purity of the obtained monopotassium phosphate product is more than or equal to 98 percent.

The invention designs a method for preparing nanometer aluminum or nanometer aluminum coating in an electro-deposition form by using an ion liquid/additive system. The method is characterized in that: ion liquid and anhydrous aluminum trichloride are mixed into a low-temperature electrolyte and suitable additives are added for preparing the ion liquid/additive system. A processed substrate is taken as a deposition cathode; the direct current electro-deposition is adopted for preparing the nanometer aluminum or nanometer aluminum coating; and the size of the aluminum grains is adjusted according to requirements. According to the method, the problems of high cost and small output of the present technology for producing the nanometer aluminum are solved; the adopted ion liquid is conventional ion liquid and is characterized by wide source, low cost, high conductivity, wide electrochemical window and being non-volatile and environment-friendly; the suitable additives are used, so that the high-quality nanometer aluminum or nanometer aluminum coating obtained in the conventional ion liquid is realized; the obtained aluminum deposited coating is compact, smooth and flat; a nanometer material can be obtained by using the ion liquid/additive system at lower temperature; the reaction is easy to control; the energy consumption is low; the obtained nanometer aluminum is high in quality and high in current efficiency; the size of the nanometer aluminum can be effectively controlled by adjusting the dosage and formula of the additives; the process is simple; the cost is low; and the application prospect is better.

The invention discloses a production of food packaging film and the method for preparation, specifically a degradable complex film prepared with degradable nanometer PA polymer as the obstruct material. Said complex film has a layer structure containing at least two outer layers and one interlayer, at least one layer among which is the obstruct layer, the obstruct layer being made up of degradable nanometer PA polymer, and others being made up of degradable polyolefin or polyolefin. Compared with the high-obstruct film prepared with PVDC, the invention overcomes the shortcomings that the manufacture is hard, the cost is high, environmental pollution is serious, and the recovery is hard. And the high-obstruct packaging film prepared mainly with nanometer PA has identical obstruct effect with PVDA film.

The invention discloses a multi-color optical encoding nano-rod with silica shell. The multi-color optical encoding nano-rod takes the shape of a core shell, the shell is made of silicon dioxide and the kernel is fluorescence-encoded polylysine which contains fluorescent dye A and fluorescent dye B; the fluorescent dye A and fluorescent dye B are a fluorescence resonance energy transfer supplier-receptor pair. The invention also discloses a method for preparing the multi-color optical encoding nano-rod with silica shell, which includes the steps of enabling the fluorescent dye A and fluorescent dye B to react with the polylysine to prepare fluorescence-encoded polylysine, and wrapping the fluorescence-encoded polylysine, used as kernel material, in a silicon dioxide substrate through reverse microemulsion method; in this way, the multi-color optical encoding nano-rod with silica shell can be prepared. The multi-color optical encoding nano-rod with silica shell has the advantages of strong fluorescence intensity, good biological compatibility, good hydrophilicity, little leakage of dye and stable property.

The invention discloses a process capable of simultaneously producing and separating high-purity EPA (eicosapentaenoic acid) ethyl ester and high-purity DHA (docosahexaenoic acid) ethyl ester. With crude fish oil as raw material, supercritical fluid extraction, base catalysis and esterification, supercritical counter-current extraction, urea clathration and supercritical rectification are carried out, and EPA ethyl ester and DHA ethyl ester with the purity being more than 90% are obtained respectively. By adopting the process disclosed by the invention, the EPA ethyl ester and the DHA ethyl ester can be effectively purified and separated, and the contents of the obtained EPA ethyl ester and DHA ethyl ester are respectively more than 90%; and no residual solvent exists in the product, preoxidation value is less than 2meq/kg, anisidine value is less than 10, acid value is less than 0.5mgKOH/g, polymer is less than 0.2%, no stearin is contained, and the defects of the prior art that cost is high, process is complex, long time is consumed and safety is difficult to guarantee can be overcome.

The invention discloses a method for manufacturing a flexible-film solar battery, which comprises the following steps of: providing a hard carrier plate; forming an isolated protecting layer on the surface of the hard carrier plate; forming a film solar-battery layer system with internal cascade on the surface of the isolated protecting layer; combining or forming a flexible bearing layer on the surface of the film solar-battery layer system; and integrally isolating the flexible bearing layer and the film solar-battery layer system from the hard carrier plate. In the invention, the flexible-film solar battery can be directly manufactured on the surface of the hard carrier plate, such as glass, without a traditional and expensive flexible substrate with high requirements on physicochemical characteristics or a complicated process for manufacturing the flexible-film solar battery by firstly adhering the flexible substrate to the surface of the hard carrier plate and then continuing to deposit a film, and the manufacturing method is a revolutionary method for directly manufacturing the large-area internally-cascaded flexible-film solar battery on the hard carrier plate.

The invention relates to a grafted solid acid catalyst. A preparation method of the grafted solid acid catalyst comprises the following steps: taking lignocelluloses biomass carbon-based material as a raw material, taking a sulfonating agent as an active molecule, and carrying out carbonization reaction for 1-36 hours at the temperature of 120-240 DEG C, wherein the mass ratio of the raw material and the sulfonating agent is 1/10-10; standing black solid obtained by carbonization at high temperature, drying to obtain black solid which is a rough carbon-based solid acid catalyst; and mixing the rough carbon-based solid acid catalyst with an oxidizing agent according to the solid-liquid ratio of 1/10-0-1/10, reacting for 0.5-3 hours at the temperature of 50-60 DEG C, after reaction, filtering and separating to obtain black solid, and washing and drying the black solid to obtain the grafted carbon-based solid acid catalyst. Cellulose-based glucose is used as the raw material of the catalyst, the structural characteristics of the raw material are similar to the structural characteristics of the raw material of lignocelluloses biomass, therefore, catalyzing effect is excellent, and the catalyzing effect of the grafted solid acid catalyst is similar to the catalyzing effect of liquid acid.

A method for applying Bayan Obo ore ultra-fine iron powder in sintering is a using method in sintering before iron making and belongs to the technical field of ferrous metallurgy sintering. The method for applying the Bayan Obo ore ultra-fine iron powder in sintering is characterized by comprising the steps of evenly mixing and pelletizing Bayan Obo ore main ore concentrate 16%-31%, Bayan Obo oreultra-fine iron ore concentrate 17%-31%, Mongolia ore powder 8.0%-9.0%, limestone 4.9%-5.1%, dolomite 2.4%-2.6%, unslaked lime 2.1%, coke powder 4.4%-4.5% and returned ores 30%, then performing sintering in a sinter pot and supplying sintered finished ores for a blast furnace, wherein the alkalinity of the sintered ores is controlled in a range of 1.90-2.05, and MgO is controlled in a range of 1.9%-2.1%. The Bayan Obo ore ultra-fine iron powder is added into sintering mixed materials, thereby improving air permeability and the yield of the sintered ores. In addition, solid burn-up is reduced remarkably, and the process is simple.

A preparation method of urea peroxide comprises uniformly mixing urea solution, 25-50% hydrogen dioxide solution, stabilizer and carbowax filming agent, to be dewatered, cooled and crystallized in vacuum of -0.085 to -0.095MPa at a temperature of 40 to 63 DEG C, wherein the weight ratio of hydrogen dioxide in urea and hydrogen dioxide is 1:(1.0-1.4), the stabilizer is a mixture of endrate disodium (EDTA sodium) and citrate at a weight ratio of 1:(1-3), the stabilizer is 0.001-0.5% of urea by weight, and the filming agent is 0.05-0.2% of the urea by weight. The preparation method of urea peroxide can obtain high-stability urea peroxide crystal of high yield, with better crystal form, high stability, simple production process, small volume, no generation of three wastes and application in industrial batch production, while the stabilizer and filming agent have single component to avoid complex treatment.

Disclosed is an outer tube of fireworks with bottom, whose characteristics is that its main component are haulm fiber, glass fiber, calcium sulfate, light filler, cement of high level and bond. It is formed by once overall stamp by special machine and natural drying, the product has U-typed bottom, a layer of kraft paper enclosing the outer wall of tube, and its appearance, size and length can be ordered by the size needs of different fireworks products. The invention has the advantages of abundant raw material, advanced technology, excellent chemical and physical stability, stable shape, resistance to humidity, high intension and notable safety, which can be widely used in outer tube of various fireworks products.

The invention belongs to the technical field of tea products, and discloses a pericarpium citri reticulatae and Pu'er tea bag and a preparation method thereof. According to the pericarpium citri reticulatae and Pu'er tea bag, pericarpium citri reticulatae and Pu'er tea are matched, so that the defect caused by wrapping the Pu'er tea by using dried pericarp is overcome; meanwhile, after the Pu'er ripe tea and the pericarpium citri reticulatae are uniformly mixed according to a ratio, steps of forming a mixture in a compression manner and drying the formed Pu'er ripe tea are not required, so that the effects of the Pu'er ripe tea and the pericarpium citri reticulatae are maximally developed, and the dissolving speed of a brewed extract is high. In the preparation method provided by the invention, by adopting a manner of uniformly mixing a dried raw material according to a certain ratio, the defects of complicated process and long preparation flow of preparing each raw material extracting solution are overcome; meanwhile, the pericarpium citri reticulatae and Pu'er tea bag is simple to prepare and low in production cost; the product prepared by adopting the preparation method is uniform to prepare, more and higher in dissolving speed of effective ingredients when being brewed for being drunk, gorgeous in soup, mellow in taste, long in sweetness after being tasted, convenient and rapid to use, and low in price.

The invention relates to a method for preparing water-white highly-hydrogenated rosin. The method comprises the following step that rosin serving as a raw material is subjected to catalytic hydrogenation in the presence of a loading type nano palladium-based catalyst to obtain the water-white highly-hydrogenated rosin. In the method, the nano loading type palladium-based catalyst is utilized for the hydrogenation of the rosin, the reaction temperature is between 100 and 180 DEG C, the reaction pressure is 1.0 to 10.0MPa, and the reaction time is 2.0 to 5.0 hours; and the catalyst is removed by filtration, the solvents are removed by decompressed distillation, and the water-white highly-hydrogenated rosin is obtained. The method has the advantages of low reaction conditions, easy process operation, less consumption and long service life of catalyst, low production cost, good product quality, flexible operation, low equipment cost and the suitability for industrialized production.

The invention provides a method for improving glass strength and reducing strength dispersion by adopting variable-temperature two-step ion exchange and reinforced glass, belonging to the technical field of glass reinforcement. The method comprises the step of sequentially processing glass substrates in an ion exchange medium at high temperature and low temperature, wherein during high-temperature processing, the temperature is between 490 and 510 DEG C, and the processing time lasts for 0.5h -1h; during low-temperature processing, the temperature is between 400 and 420 DEG C, and the processing time lasts for 48h-72h; and the ion exchange medium comprises 97% of industrial pure KNO3, 0.5% of Al2O3, 2% of K2CO3 and 0.5% of KOH. The variable-temperature two-step iron-exchange glass has high glass strength and good stability and can make up the shortage of the performance of the traditional single-step iron-exchange glass, and the reinforced glass provided in the invention can be used as windshield glass for high-speed trains, airplanes and the like.

The invention discloses a method for continuously synthesizing cumarin by a microchannel reactor, comprising the following steps: (1) dissolving a catalyst into a mixed solution of acetic anhydride and acetic acid, wherein the mass ratio of the acetic anhydride to the acetic acid to a catalyst is (15-50): (2-5):1; (2) respectively pumping salicylaldehyde and the mixture obtained in step (1) in the volume ratio of 1: (1-2) into the microchannel reactor, and enabling the mixture to pass through a reactor I and a reactor II connected in series, wherein the total dwell time of the mixture in the reactor I and the reactor II lasts for 20-80 min; and (3) refining the discharged material to obtain a cumarin finished product. By using the method, tower and kettle devices are avoided, and the method is short in reaction time, low in raw material consumption per unit, high in conversion rate and yield, low in cost and suitable for industrial application.

The invention relates to a method for preparing cuprous oxide-indium trioxide solid solution superfine powder. The method comprises the following steps of: performing ultrasonic chemical reduction coprecipitation reaction on 9.99 to 99.99 percent of metal indium (In), copper sulfate (CuSO4.5H2O) and concentrated sulfuric acid (H2SO4) which serve as raw materials by using a sodium hydroxide (NaOH) solution as a precipitating agent, a glucose (C6H12O12) solution as a reducing agent and absolute ethanol (CH3CH2OH) as a stabilizing agent and a dispersing agent; reducing and aging at constant temperature; performing centrifugal separation; washing, and dispersing; and drying, calcining, and thus obtaining the cuprous oxide-indium trioxide solid solution superfine powder. The obtained cuprous oxide-indium trioxide solid solution superfine powder has the particle size of 30 to 50nm, has spherical particles, high purity and a high dispersing property and is distributed uniformly; and the method is simple, has a short production period and is convenient to operate.

The invention discloses a method for producing silica white and lead sulfide with waste with lead glass tubes as a raw material, and aims at solving the problems of complicated technology, high energy consumption and easy generation of secondary pollution in the existing lead glass tube lead-extraction technologies. According to the method, firstly waste lead glass tubes are coarsely broken and fine ground to obtain fine ground waste lead glass, and then are added with a potassium hydroxide solution to react for 60-210 minutes under 80-200 DEG C, and leaching residues and lead-silicone contained leaching solution are obtained by filtration; the lead ion concentration in the lead-silicone contained leaching solution is measured, sodium sulfide is added inside based on the mol ratio of Pb/S=1 to react for 30-120 minutes under 60-80 DEG C, and lead sulfide and filtrate are obtained by filtration; the pH value of the filtrate is adjusted to 7-9 by carbon dioxide decomposition or adding acid liquid, so that gel is obtained and then is aged for 60-180 minutes and filtered, and silica white is obtained by drying the filter cake. The method has the advantages of modest reaction conditions, simple process flow, large waste consumption and the like, and is easily suitable for large-scale industrial production.

The invention relates to a preparation method for mother liquid of nickel chrome stainless steel. The preparation method comprises the steps that laterite-nickel ore, chromite fine ore, a carbonous reducing agent and an annexing agent are evenly mixed according to the mass ratio of 40%-60% : 20%-40% : 8%-15% : 1%-6%, a mixed material is obtained, wherein the water content of the laterite-nickel ore is 5%-20%; the mixed material is pressed into balls and dried, and pellets are obtained; and the pellets are roasted under a reducing atmosphere at 1250-1400 DEG C, and pre-reduced pellets are obtained; and the pre-reduced pellets are transported to a smelting furnace in a hot transportation mode to be smelted, and then the mother liquid of the nickel chrome stainless steel is obtained after slag-iron separation. According to the preparation method for the mother liquid of the nickel chrome stainless steel, the smelting cycle is shortened, the materials are extensive in source and low in price, and the smelting cost of stainless steel is reduced greatly; and compared with the prior art in which the treatments on ferro-nickel and ferrochrome are two independent technologies correspondingly, the preparation method for the mother liquid of the nickel chrome stainless steel overcomes the defects that existing technologies are complex, the technological process is long, the energy consumption is high, pollution is severe, and the operation cost is high, and the energy consumption of smelting of an electric furnace is effectively reduced.

The invention relates to a method of improving light current of a silicon thin film solar cell, and belongs to the photovoltaic technical field. The light trapping technique of a traditional silicon thin film solar cell mainly comprises that a front electrode and a rear electrode adopt a texture structure which often causes the enlarging of the surface recombination of current carriers and the density of the defect mode of an active layer, and meanwhile due to the fact that wet etching is needed, a process is complex and hard to control. In order to solve the mentioned problems, the invention provides a method of using surface plasmon of copper nanoparticles to increase light absorption, the core technique of the method is that magnet control sputtering equipment is used to deposite copper island film inside a vacuum chamber body, then in situ annealing is carried out to form a copper nanoparticle array, and the copper nanoparticle array is arranged close to two electrodes of the solar cell so as to stimulate the surface plasmon. By using the near field enhancement effect and the scattering effect of the surface plasmon, the light current is further improved. The method of improving the light current of the silicon thin film solar cell does not need wet etching, photoetching and other process, and therefore the cost of batteries can be greatly reduced.

The invention discloses a preparation method of a multi-ceramic composite coating. The method comprises the following steps of 1, preparing oxide/silicon carbide/aluminum composite powder for thermalspraying, wherein oxides include one to four of a zirconium oxide, a titanium oxide, a hafnium oxide, a tantalum oxide, a niobium oxide, a vanadium oxide, a chromic oxide, a molybdenum oxide and a tungsten oxide; 2, performing pretreatment on the surface of a substrate material needing to be coated; 3, adopting a thermal spraying method for coating the surface of the substrate material with the oxide/silicon carbide/aluminum composite powder. Accordingly, the multi-ceramic composite coating is obtained through in-situ synthesis. The defects that in the prior art, the technology for preparing the multi-ceramic composite coating is complete, high in cost, large in contamination, low in deposition efficiency, poor in coating performance and not suitable for application in large-scale industrial production are overcome.

The invention discloses dual-scale pore structure nanocrystalline cobalt titanate powder and a preparation method thereof, and belongs to the technical field of materials. The crystal particle size ofthe dual-scale pore structure nanocrystalline cobalt titanate powder is 50 to 100nm, a space structure is formed by accumulating crystal particles and has big pores of which the size is 150 to 500nmand a mesoporus structure of which the size is 2 to 40nm, and a dual-scale pore structure is formed. The preparation method comprises the following steps: (1) preparing cobalt nitrate and water into acobalt nitrate water solution; (2) stirring and uniformly mixing absolute ethanol, tetrabutyl titanate and a complexing agent, and preparing an A solution; (3) adding glacial acetic acid, thus preparing a B solution; (4) dropwise adding the cobalt nitrate water solution in the B solution, thus forming cobalt titanate sol; (5) stirring in a water bath until obtaining gel; (6) roasting at 550 to 750 DEG C after drying. A product disclosed by the invention has the advantages that the specific surface area is large, diffusion and transportation of a gas can be easily carried out, the effective utilization rate of the specific surface area is high, and the like; the preparation method is simple in operation, is low in synthesis temperature and is low in cost, and complicated equipment is not needed.

The invention discloses a building asphalt and a preparing method thereof and belongs to the technical field of petroleum processing. Deoiled asphalt and dewaxed oil extracted from furfural through vacuum distillation serve as reaction raw materials, a condensation reaction is carried out for 20-90 min at 130-170 DEG C at the normal pressure with the existence of a chemical condensation agent, and the building asphalt is prepared. The high-low temperature performance of the obtained product meets the national standard requirement; besides, the process is simple, the production cost is low, environment friendliness is achieved, and the problems that an existing oxidation method is complex in process, high in cost, likely to cause pollution to the environment and the like are solved.

The invention relates to a method for preparing carbon balls and in particular relates to a method for preparing a phenolic resin-based hollow carbon ball. The method comprises the following steps: simultaneously adding curing agent-free thermoplastic phenolic resin particles, a curing agent and an aqueous solution containing 1-10wt% of dispersing agent into an autoclave according to a mass ratio of 100:3-20:500-1500, heating to the temperature of 110-130 DEG C at a temperature rise rate of 0.5-5 DEG C/min while stirring; and keeping constant temperature for 0.5-3 hours; naturally cooling, filtering and drying to obtain the hollow phenolic resin ball; and finally, heating to the temperature of 800-1000 DEG C in a carbonization and activation furnace at a temperature rise rate of 0.5-5 DEG C/min by taking 100g of the hollow phenolic resin ball as reference, and keeping the constant temperature for 0.5-3 hours; and naturally cooling to obtain the hollow carbon ball. The hollow carbon ball prepared by the method is simple in process and high in yield and has high degree of sphericity and large sphere diameter, and the hollowness degree is easily regulated. The problems that the process is complex, the degree of sphericity is low, the hollowness degree is difficult to regulate and the like in the process of preparing the hollow carbon ball at present are solved, so that the hollow carbon ball is widely applied to the fields such as drug sustained release and catalyst carriers.

The invention belongs to the technical field of tea products, and discloses a tea bag containing chrysanthemum flower tea and Puer tea, and a preparation method of the tea bag. According to the tea bag, compatibility of the chrysanthemum flower tea and the Puer ripe tea, so that the defect that the chrysanthemum flower tea has a single component can be overcome, and a tea brick or a tea cake are not required to be prepared in a pressing manner and the steps of sizing and slow drying in a drying room are not required after the Puer ripe tea is evenly mixed with the chrysanthemum flower tea in a proportion, and therefore, the effects of the Puer ripe tea and the chrysanthemum flower tea are exerted to the utmost extent, and a brewed extract is rapidly dissolved out. According to the preparation method, the dried raw materials are evenly mixed according to the certain proportion, so that the defects that a technology for preparing all raw material extracts is complicated, and the preparation process is long in the prior art can be overcome, and the method is simple in operation and low in production cost; the product prepared by adopting the method is evenly mixed, and a relatively large quantity of effective components are relatively rapidly dissolved out when the product is brewed and drunk; the tea is bright-colored, has attractive tea soup, and is pure and mild in mouth feel, lasting in sweet aftertaste, convenient and fast to use and low in price.

The invention relates to a light-emitting diode epitaxial structure shielding the polarization field effect in the quantum well, which relates to a semiconductor device specially suitable for light emission with at least one potential jump barrier or surface barrier. The structure is arranged sequentially from bottom to top, including : Substrate, buffer layer, non-doped semiconductor material layer, doped N-type semiconductor material layer, multiple quantum well layer, P-type electron blocking layer and P-type semiconductor material, wherein in the multiple quantum well layer through the quantum barrier The gradient structure is used to realize the generation of polarized body charges in the quantum barrier, which will play a role in shielding the polarization field of the quantum well region, and overcome the existing technology of shielding the polarization field effect of the quantum well region. The process of the field is complicated, the effect is not obvious, and the defect that affects the hole transport.

The invention discloses a preparation method of a tungsten boride composite coating, and relates to coating of boride on metal materials. The tungsten boride composite coating is synthesized through a thermal spraying in-situ reaction. The preparation method comprises the steps that tungsten oxide/boron carbide/aluminum composite powder used for thermal spraying is prepared; the base material surface needing the coating is pretreated; and the tungsten boride composite coating is prepared. The defects that the existing technology for preparing the tungsten boride composite coating is complex, high in cost, large in pollution and low in deposition efficiency, and the coating is small in thickness, low in compactness, poor in uniformity, low in toughness, poor in binding force with a base body, likely to be cracked and not suitable for being applied in large-scale industrial production are overcome.

The invention discloses a preparation method for a flaxseed cake polypeptide beverage. The method employs flaxseed cake as a raw material and includes the following steps: adding cellulase for pre-treatment to release protein constrained by cellulose, and adding protease to prepare flaxseed cake polypeptide, and carrying out composition and sterilization to prepare the flaxseed cake polypeptide beverage. The flaxseed cake polypeptide is prepared through the enzymatic method to overcome the defects that an alkali extraction and acid deposition method is intensive in reaction conditions and is liable to cause environment pollution and an organic solvent method is complex in processes and high in cost. The enzymatic method for hydrolyzing the flaxseed cake polypeptide has mild reaction conditions, short reaction time and low energy consumption, and is easy to control in hydrolysis degree. The flaxseed cake polypeptide beverage has excellent color and flavor, is rich in nutrition, is easy to prepare and is reasonable in cost. The method is suitable for amplification, develops a new approach for deep-processing of flaxseed cake protein and provides a new product for beverage industry.

The invention discloses a preparation method of an enhanced metal-matrix composite material. The preparation method comprises the following steps that S1, the surfaces of nanoparticles are coated withmagnesium nitride in an evaporated mode; S2, metal raw materials are taken to be put into a medium-frequency induction furnace for alloy smelting; S3, the coated nanoparticles are loaded into a powder storage tank; S4, high-pressure gas is opened, airflow passes through the powder storage tank to carry the nanoparticles so as to form solid phase flow and gas phase flow; and S5, after the high-pressure gas phase flow and the high-pressure solid phase flow pass through an atomizer, molten metal liquid flow is broken; and S6, prepared powder particles are collected in a collector. The surfaces of nanoparticles are coated with generated magnesium oxide in an evaporated mode in the preparation process, thus the wettability of enhanced body particles and matrix melt can be improved significantly, and the adverse reaction between the particles and the outside world can be avoided through a magnesium oxide film; and metal droplets and the pretreated nanoparticles are subjected to complex andintense energy exchanging, thus the overall uniformity of enhanced combination is promoted, and relative to combination of solid phase particles, the preparation method is quicker in combination and facilitates scale production.

The invention discloses a graphene-polymer micro-wire array, a gas sensor, and preparation methods and application thereof. The graphene-polymer micro-wire array comprises a graphene micro-wire array and a polymer film layer coated thereon; and the graphene micro-wire array is in one-dimensional distribution, mutually parallel, and extends along the one-dimensional distribution direction. According to the graphene-polymer micro-wire array and the gas sensor prepared by the invention, the disadvantages of high cost, complex process, low detection efficiency, poor sensitivity, limited detection path after swelling and requirement of special instruments and equipment when the gas sensor is prepared by simply utilizing a polymer film in the prior art can be overcome; the machinable property is good; furthermore, large-area preparation can be realized; therefore, high detection sensitivity, selectivity and performance stability are ensured; by means of the method, the width of the graphene-polymer micro-wire array can be adjusted in the preparation process; and thus, the method is hopefully and widely used in the aspects, such as food monitoring and atmospheric pollutant monitoring.

The invention relates to a preparation method of a biomass carbon-based electrode for an asymmetric capacitance desalting device, which comprises the following steps: cleaning shrimp and crab shells,carrying out ultrasonic treatment, drying, pulverizing into powder, carbonizing in an inert atmosphere, adding an activator into a carbonized product, heating to 800-1200 DEG C under the protection ofinert gas, keeping the temperature for 2-4 hours, cooling, pickling, washing with water, filtering, and drying to obtain nitrogen-doped porous carbon; respectively carrying out sulfide modification and positive charge modification on the nitrogen-doped porous carbon, dispersing the modified nitrogen-doped porous carbon, acetylene black and polytetrafluoroethylene in absolute ethyl alcohol, evaporating to a paste, coating conductive substrate graphite paper with the paste, drying, and assembling to form an asymmetric electrode, wherein the positive electrode is positive charge modified nitrogen-doped porous carbon, and the negative electrode is sulfide-modified nitrogen-doped porous carbon. According to the method, the shrimp and crab shells are used as precursors, a nitrogen source does not need to be additionally added, raw materials are easy to obtain, cost is low, large-scale production can be achieved, and the prepared electrode is large in adsorption capacity and high in efficiency.

The invention provides a ternary random copolymer containing beta-myrcene, a preparation method and applications thereof, and relate to the field of synthetic rubbers, wherein the ternary random copolymer containing beta-myrcene comprises a beta-myrcene structure unit, a styrene structure unit and a butadiene structure unit, and has a structure represented by a formula (I), the beta-myrcene structure unit accounts for 5-70 wt% of the ternary random copolymer, and the copolymer is prepared by copolymerizing a bio-based monomer beta-myrcene, styrene and butadiene anions. According to the present invention, the method has characteristics of simple process, high efficiency, low cost, high functionalization degree and good industrial adaptability, and can achieve the efficient and precise control of the composition and the structure of random copolymers; and the long branch chain, the carbon particles and other fillers contained in the product have good adhesion, and can significantly improve the dispersibility of the carbon black, and the vulcanized rubber prepared by using the copolymer has characteristics of high wet-skid resistance, low rolling resistance and the like, and is a novel environmental protection and energy saving tread rubber.