4021results about How to "Great application potential" patented technology

The invention provides a high-performance thermal insulation material and a preparation method thereof. The thermal insulation material comprises silicon dioxide aerogel and a fiber material, wherein, the silicon dioxide aerogel takes silicon dioxide hydrosol as a raw material, and is prepared by adding a catalyst. The method comprises the following steps: sol preparing, sol dipping, gelating, gel ageing, hydrophobization treating and drying and the like. The method can conveniently and selectively prepare the materials of planes, abnormal-shape surfaces and multiple sizes, has simple and convenient operation and small environmental pollution. The material has excellent mechanical performance, good high-temperature stability and heat insulation performance, and has wide application prospect in the fields of civilian industries, space flight and aviation industries, military industries and the like.

The invention discloses a graphene film with ultrahigh flexibility and high thermal conductivity and a preparation method of the graphene film. The graphene film is prepared from an ultralarge uniform graphene oxide sheet through steps of solution film-formation, chemical reduction, high-temperature reduction, high-pressure compression and the like. The graphene film is formed through physical crosslinking of macroscopic multi-layer folded graphene with microscale folds, and inter-lamella slippage can be realized, so that the graphene film has ultrahigh flexibility. The graphene lamellar structure of the graphene film is perfect, the lamellas have ultralarge crystalline areas which are about 100 mu m and contain few defects, the structure is compact after high-pressure compression, and the graphene film has ultrahigh electrical conductivity and thermal conductivity. The graphene film with ultrahigh flexibility and high thermal conductivity can be bent repeatedly more than 1,200 times, the elongation at break is 12%-18%, the electrical conductivity is 8,000-10,600 S / cm, the thermal conductivity is 1,800-2,600 W / mK, and the graphene film can be used as a high-flexibility, thermal-conducting and electric-conducting device.

The invention belongs to the technical fields of environmental engineering and bioengineering and particularly relates to a sphingomonas strain and applications thereof in the aspects of shortcut nitrification-denitrification of nitrogen-containing industrial waste water and domestic sewage and treatment of a polluted water source. The sphingomonas strain is separated from a Taihu water in China,is a local strain and has high safety; and the strain can be grown in a basic medium, wherein in the basic medium, CO2 is used as a carbon source and energy or CO2 and an organism are used as a mixedcarbon source and energy, and ammonia nitrogen or nitrate nitrogen is used as a nitrogen source. The bacterium liquid, the dormancy cell and the immobilized strain of the sphingomonas can decompose ammonia nitrogen into nitrite nitrogen and simultaneously can decompose the ammonia nitrogen into nitrogen, can be used as denitrification microorganism for converting the ammonia nitrogen into the nitrite nitrogen and the nitrogen, thereby achieving the shortcut nitrification-denitrification. The strain can rapidly decompose the ammonia nitrogen and is suitable for treating the nitrogen-containingindustrial waste water and domestic sewage as well as polluted water source.

The invention discloses a process method for preparing an ultra-hydrophobic surface by the electrochemical method. The process adopts two processing steps: forming the micro nanometer double-structurerough surface by first electrochemical etching and then oxalic acid anodic oxidation; and preparing the ultra-hydrophobic surface by modifying the surface with fluorosilane. The method is simple andpractical, uses mature electrochemical etching and anodic oxidation technology, allows for easy mass production and avoids environmental pollution.

The invention provides a motion-decoupled rope-driven non-individual body mechanical arm and a robot. The mechanical arm comprises mechanical arm sleeves, traction rope sets and knuckles, wherein the number of the mechanical arm sleeves, the number of the traction rope sets and the number of the knuckles are more than one. The mechanical arm sleeves are sequentially arranged, and the adjacent mechanical arm sleeves are hinged to form a mechanical arm body through the knuckles. The front end of the mechanical arm body is used for being connected with a rope-driven base. The traction rope sets are used for driving the corresponding knuckles. The traction rope sets and the knuckles are in one-to-one correspondence. One end of each traction rope set is connected with the corresponding knuckle, and the other end of each traction rope set is used for being connected with the rope-driven base after sequentially penetrating through through-holes in multiple knuckle rope guiding discs arranged on the front side of the corresponding knuckle. The mechanical arm has multiple degrees of freedom, is thin and long in body type and suitable for survey and operation in narrow spaces, and has large application potential.

The invention discloses a method for producing porous starch and its application by using starch, maize starch, tapioca starch, sweet potato starch and potato starch as raw material, and charging complex enzyme of saccharified enzymes and alpha-amylase possessing raw starch hydrolysis vitality under the temperature lower than gelatinization temperature, agitating continuously, reacting for a finite period of time at constant temperature, and obtaining porous starch product through centrifuging, scrubbing and drying.

The invention relates to a preparation method of a solar light splitting water hydrogen production catalyst without noble metal as a cocatalyst. Specifically, graphene is used as a cocatalyst to prepare semiconductor nanoparticle-graphene composite photocatalysts, including CdS-graphene composites and TiO2-graphene composites. The hydrogen production efficiency of the photocatalyst with graphene as the cocatalyst is comparable to or even higher than that of the photocatalyst containing the same mass of noble metal Pt under the same hydrogen production conditions. Graphene materials have good electron aggregation and transport functions, which promote the effective separation of electrons and holes, reduce the probability of proton recombination, and increase the photocatalytic efficiency of photocatalysts and the efficiency of photo-splitting water to produce hydrogen; and the preparation method of graphene materials is simple , cheaper than precious metals, and has no pollution to the environment, which is conducive to large-scale preparation and production. The preparation of photocatalysts using graphene as a cocatalyst has opened up a new method for reducing the cost of hydrogen production from solar energy and improving the efficiency of hydrogen production by photolysis of water.

The invention provides a preparation method of a cellulose nano-fiber / polylactic acid composite membrane. The preparation method comprises the following steps of: (1) treating raw materials; (2) performing chemical treatment; (3) performing mechanical treatment; (4) preparing a nano cellulose membrane; (5) preparing a nano cellulose / polylactic acid composite membrane material by using a mixing and dissolving method or an immersion method. The preparation method has the advantages that lignin and most of hemicellulose are removed by using a chemical method, and under a water wet swelling condition, water fills the positions in which most of the hemicellulose and the lignin are removed, so that the hydrogen bond acting force among fibrillae is reduced; then lignocellulose nano fibrillae with uniform morphological sizes and mesh gangles are prepared by adopting mechanical treatment. The nano celluloses prepared by grinding for 30 minutes and homogenizing are small in diameter size and are uniformly distributed, the diameters of the nano fibrillae is 15-50nm, and the length-diameter ratio is high and reaches 1200. The cellulose nano-fiber / polylactic acid composite membrane can be used as a substitute and the like for a flexible display, electronic paper, a solar battery, a flexible circuit and a glass substrate.

The invention discloses a nitrogen-doped graphite carbon, which is obtained by calcining a graphite carbon material in a nitrogen-containing micromolecule material or atmosphere of the nitrogen-containing micromolecule material. When a pole piece which is prepared from the nitrogen-doped graphite carbon material is used as an electrode material of the lithium ion battery, the specific capacity of the material reaches 450 to 1,100mAh / g, and the material has high multiplying power performance and cycle performance. A preparation method of the nitrogen-doped graphite carbon is convenient to operate, and is easy and practicable; the prepared material has stable and excellent performance, and is the anode material of the lithium ion battery, which has good application prospect.

The invention provides a preparation method of a flexible strain sensor based on conductive fiber and application thereof. The conductive fiber comprises a metal nanowire as a conductive layer, an electrospun polymer nanofiber membrane as a protective layer and an elastic yarn as an elastic carrier. In the preparation process, the surface of the elastic yarn is coated with a layer of polymer nanofiber membrane by an electrospinning technology first and then the metal nanowire is deposited on the surface structure thereof through multiple dip coating. The prepared flexible strain sensor based on the conductive fiber has the ability of quickly detecting various deformations such as stretching, bending and twisting, and the sensitivity thereof is still maintained to be 90% or above after thenumber of stretching cycles reaches 10,000; the flexible strain sensor can achieve simultaneous detection of human pulse beat, vocal cord vibration and more complex multiple sites, and has a great application potential in smart wearable devices such as virtual reality, human-machine interfaces and health monitoring.

The invention relates to a preparation method for alumina. Wherein, with aluminum sol as precursor, adding surfactant and high polymer or hydroxyl acid as structure guide agent, adding base to regulate system pH value within 8-11; hydrothermal composing at 80-100Deg, separating, clearing with water, drying, and baking at 500Deg; or drying directly the mixture at 30-100Deg, then baking at 500Deg to obtain the product. The experiments show: the product has connected worm-shaped pore structure with wall frame formed by crystal phase gamma-Al2O3 as well as high specific surface area and controllable pore size distribution, is simple and low cost and stable, and spreads its larger-scale application.

The invention discloses a method for preparing a bio-organic fertilizer by utilizing eupatorium adenophorum, and in particular provides a method for preparing a bio-organic fertilizer by using the eupatorium adenophorum as the main raw material, wherein the bio-organic fertilizer can kill eupatorium adenophorum seeds and eliminate poisonous components. The method comprises the following steps of: (1) crushing eupatorium adenophorum straws into powder; (2) mixing the crushed powder with high-temperature microbial strains, adding clear water, and then uniformly stirring the prepared mixed material; (3) stacking the stirred mixed material to be stripped, and carrying out aerobic fermentation for promoting the composting of the mixed material; and turning the stack once at a periodic interval to improve the ventilation condition in the stack; (4) maintaining the temperature of the stack of the mixed material over 58 DEG C; and (5) drying the mixed material after the stack of the mixed material ferments for the set time. By using the method, allelopathic effect active ingredients in the eupatorium adenophorum raw material are controlled, the eupatorium adenophorum seeds in the raw material are killed, and the produced fertilizer has nontoxicity, a good fertilizer effect and low production cost.

The invention relates to a preparation method of a carbon aerogel, particularly a preparation method of a biomass nano cellulose carbon aerogel, and aims to solve the problems of complex preparation process and lack of raw materials in the traditional carbon aerogel. The method comprises the following steps: 1. treatment of biomass material: treating the biomass material with acidified sodium chlorite, and treating with a 1-10 wt% potassium hydroxide solution to obtain purified cellulose; 2. preparing purified cellulose water solutions with different concentrations; 3. mechanical treatment: carrying out ultrasonic treatment on the purified cellulose water solution, carrying out high-pressure homogenization treatment to obtain a nano cellulose water suspension, and standing the nano cellulose water suspension to obtain the nano cellulose aquagel by self-assembly; 4. drying the nano cellulose aquagel to prepare the nano cellulose aerogel; and 5. carrying out carbonizing treatment on the nano cellulose aerogel in a pipe furnace in an inert gas protective atmosphere to prepare the nano cellulose carbon aerogel. The method is applicable to the field of aerogel materials.

The invention discloses hyperbranched polysiloxane and a preparation method thereof. The hyperbranched polysiloxane contains a phosphaphenanthrene structure and an epoxy group simultaneously. The preparation method comprises the following steps of: mixing distilled water and epoxy group-containing trialkoxysilane uniformly according to a molar ratio, adding a catalyst A slowly and dropwise under the condition of stirring, and performing a reaction to obtain epoxy group-containing hyperbranched polysiloxane; mixing the epoxy group-containing hyperbranched polysiloxane and a certain amount of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide; and mixing the mixture and a catalyst B and alcohol solvent, and purifying, filtering and vacuumizing a crude product to obtain the hyperbranched polysiloxane containing the phosphaphenanthrene structure and the epoxy group. The hyperbranched polymer integrates the molecular characteristics of the hyperbranched polysiloxane, the 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide and the epoxy group, and has the huge application potential in the modification aspect. The preparation method has the characteristics of wide applicability and simpleoperational process.

The invention relates to a method for preparing a ZSM (Zeolite Socony Mobil)-5 in a grade structure, and specifically relates to a method for preparing a grade porous ZMS-5 molecular sieve by acid-base coupling. The method comprises the following steps: mixing commercial ZSM-5 and alkali liquor in proportion, and heating and stirring to form a suspension; filtering the suspension; washing the filter cakes by water or acidic liquor; and finally, carrying out ion exchange by using acidic ammonium salt liquor; and then, roasting to obtain the grade porous ZMS-5 molecular sieve. The method provided by the invention aims to prepare the ZSM-molecular sieve rich in secondary mesopores. Firstly, part of aluminum silicon species in the ZSM-5 is removed in an environment-friendly alkali treatment manner to prepare the ZSM-5 molecular sieve with a secondary pore structure. Based on the secondary pore formed, undefined structures on the surface of the ZSM-5 and in the duct are dissolved out by way of acid washing or ion exchange. Meanwhile, the pore volume and the specific surface area of the secondary mesopore-enriching ZSM-5 molecular sieve are improved. Through the acid-base coupling treatment, the distribution state of aluminum outside the framework on the surface of the ZSM-5 is improved, so that the secondary mesopore-enriching ZSM-5 molecular sieve prepared by the method has a huge application potential in catalytic cracking and hydrocracking.

The invention provides a method for manufacturing a flexible touch screen and equipment for manufacturing a touch electrode coil for the flexible touch screen. A transparent conductive electrode pattern and an electrode lead of the touch screen are directly printed on the surface of a transparent insulated plastic substrate in a coil-to-coil manner. Compared with a traditional lithography process and dry-wet method etching manufacturing process for the touch screen, the method disclosed by the invention has the advantages that processing procedures of the touch screen are greatly simplified, the cost is reduced and the yield is increased; and in addition, the bottleneck that the processing size is limited is overcome and the flexible touch screen with large size can be manufactured, so that the touch screen can be applied to and popularized in the novel fields in a wide range.

The invention relates to a ferrum (Fe)-based amorphous alloy material, in particular to a Fe-based amorphous alloy strip for treating printing and dyeing wastewater and a preparation method thereof. According to the conventional literatures and technical data, an alloy component with Fe-based amorphous alloy strip forming capacity is selected; and general requirements show that the selected alloy component comprises more than 50 percent of Fe atoms, preferably 60 to 85 percent, so the reduction decoloring capacity of the Fe atoms is exerted. The amorphous alloy strip is obtained by adding a small amount of other elements and performing rapid solidification by using melt spinning equipment. The decrystallization of zero-valent Fe is realized by preprocessing technology; the decoloring capacity of the Fe atoms is kept; the rusting consumption of the Fe in the wastewater treatment process is effectively reduced; the strip is repeatedly and persistently utilized on the premise of guaranteeing the decoloring rate; the technical defects and the application defects in the conventional method for treating the printing and dyeing wastewater by using reducing Fe powder or waste cast Fe scraps are overcome; and the Fe-based amorphous alloy strip relates to the field of potential application of decrystallization technology in the industrial field, and has an extremely high application prospect.

The invention discloses a making method of heat-proof xylanase, heat-proof beta-xylosidase or heat-proof beta-glucosidase, which comprises the following steps: adopting agricultural waste as carbon source; fermenting Paecilomyces thermophila J18 at 40-60 deg.c to obtain the ferment liquid with heat-proof xylanase, heat-proof beta-xylosidase or heat-proof beta-glucosidase; purifying; obtaining electrophoretic grade product.

The invention discloses a one-dimensional structure metal-organic framework compound and a preparation method thereof. The preparation method comprises the steps that 1, a supersaturated quantity of organic ligands are taken to be added into solvent, and heating is performed until the organic ligands are completely dissolved to prepare a supersaturated solution; 2, metal salt is added into the supersaturated solution for reacting, separating and drying are performed after full reacting is finished, and then the one-dimensional structure metal-organic framework compound is prepared. The prepared one-dimensional structure metal-organic framework compound is of a one-dimensional nanometer linear structure, the length is 100 nanometers-100 micrometers, and the diameter is 20 nanometers-10 micrometers. The one-dimensional structure metal-organic framework compound has the better mechanical property, the higher strength and the better toughness and has the special electrical property of a nanowire. The preparation method of the one-dimensional structure metal-organic framework compound is easy to operate, mild in condition, short in reaction time and suitable for scale production.

The invention belongs to the technical field of flexible energy storage devices, and particularly relates to a metal organic frame / conductive polymer composite material, a preparation method thereof and application in knittable, flexible and fibroid supercapacitors. Carbon fiber bundles are adopted as an electrode substrate, the electro-deposition metal organic frame / conductive polymer composite material is adopted as an electrode active material, polyvinyl alcohol-electrolyte gel is adopted as solid electrolyte and a membrane, and the prepared fibroid supercapacitor has the excellent capacitive performance, good mechanical flexibility, wide working temperature range and stable long-term service life, capable of being directly knitted and integrated into textile easily, and capable of providing an efficient energy storage system for wearable mobile equipment.

The invention discloses a construction site image safety helmet detection method based on deep learning. The method comprises the following steps: firstly, detecting a constructor target area through a deep learning target detection method; obtaining a target image area of the person; intercepting an image of the upper 1 / 3 part of the area; and training the safety helmet classification network of the image of the last 1 / 3 part by using a transfer learning method in deep learning, judging whether the image part contains the information of the safety helmet, if the image part is classified as the safety helmet, the person in the image wearing the safety helmet, and otherwise, the person in the image not wearing the safety helmet. The method disclosed by the invention can meet the accuracy requirement of safety helmet detection and has a relatively high use value.

A method for treating the As-polluted soil features that the Chinese brake herbs are planted in said soil for absorbing the As from the soil and the their leaves are removed periodically (5-6 months). For acid soil, the lime or alkaline fertilizer can be applied to increase its pH value.

The invention relates to a method for efficiently preparing cotton based mesoporous activated carbon fiber. The method comprises a step (1) of washing cotton, placing the cotton in a hydrothermal reaction kettle, performing heating to 150-200 DEG C at the heating rate of 5-30 DEG C / min, performing hydrothermal carbonization, performing heat preservation for 1-3 hours and then performing cooling to room temperature; a step (2) of dipping carbonization materials obtained from the step (1) into activator solution, performing microwave-ultrasonic joint dipping for 5-30 minutes and then performing filtration, sending filtration materials to a microwave heating device, performing activation for 5-15 minutes at 250-350 DEG C and then stopping microwave output, and a step (3) of washing the activated materials to be neutral and performing drying to obtain the activated carbon fiber. According to the method, the characteristics of microwave inner heating and selective heating are fully utilized, the technological process is simple, the activation temperature is only 250-350 DEG C, the activation time is only 5-15 minutes, the mesoporous proportion of the activated carbon fiber of the product reaches 50-90%, and the adsorptive property is good.

The invention discloses a pyridine-degrading bacterium as well as a composite bacterial agent, a preparation method and uses thereof. The newly-separated Rhodococcus pyridinovora KT-J002 CGMCC No.2789 and Cellulomonas sp KT-J007 CGMCC No.2788 not only can effectually degrade the high concentration pyridine, but also has tolerance or degradation ability for toxic substances such as benzene, phenol, dimethylbenzene, quinoline, cyanide and the like; the composite bacterial agent composed of Rhodococcus pyridinovora KT-J002 CGMCC No.2789, Cellulomonas sp KT-J007 CGMCC No.2788, Paracoccus d enitrificans W12 CGMCC No.1673, Micrococcus luteus ATCC 49442 and Arthrobacter crystallopoietes ATCC 15481 is used for environmental improvement, can effectually degrade the pyridine and is particularly suitable for the biological treatment of coking waste water.

The invention relates to a preparation method for cerium oxide / graphene oxide nanocomposite. The invention aims at providing a preparation method of cerium oxide / graphene oxide nanocomposite, and the preparation method is low in equipment requirement, simple to operate and fast in reaction speed, and is capable of saving energy consumption and uniformly dispersing metal nanoparticles on the surface of graphene. The method comprises the steps of: based on cerate, sodium acetate, urea and graphite oxide as raw materials, placing graphite oxide and water into a container, and carrying out ultrasonic treatment so that graphite oxide form a suspension in the water; placing cerate, sodium acetate and urea into the container for dissolving cerate, sodium acetate and urea into the water; and placing the container into a reactor with a backflow device for reaction until the reaction is finished, so as to obtain a black precipitate namely cerium oxide / graphene oxide nanocomposite.

The invention discloses mesoporous silica with a yolk-shell structure and a preparation method thereof. The morphology of the mesoporous silica is of spherical bodies. The spherical body has a mesoporous core and a mesoporous shell. A cavity structure is between the mesoporous core and the mesoporous shell. Mesoporous silica balls have high specific surface area, uniform and adjustable particle size and uniform pore size. The preparation method of the mesoporous silica includes: dissolving a surface active agent in a mixed solution of ethanol, ammonia and water, adding two silica precursors into the mixed solution under heating and stirring conditions, transferring the obtained spherical silica into water after reacting for a period, etching to remove intermediate loose layers of silica balls, finally removing the surface active agent to obtain mesoporous silica products having the yolk-shell structure. The preparation method of the present invention has the characteristics of simple process, low cost, and environmental protection. The prepared mesoporous silica has great application potential in medical imaging, drug delivery and other fields.

The invention relates to a method for preparing a pyramid array on a monocrystalline silicon substrate, and belongs to the technical field of manufacture of photovoltaic and semiconductor devices. The method comprises the following steps of: covering microballons in periodic arrangement on the surface of a monocrystalline silicon piece, and annealing near the glass transition temperature point of the microballoon; in oxygen atmosphere, obtaining a microballoon array in separation arrangement after etching by use of inductive coupling plasma; depositing a metallic titanium membrane on the monocrystalline silicon piece uniformly by a physical vapor deposition manner; and putting a silicon wafer with a masking film into an alkaline solution containing a surfactant for corrosion so as to obtain the pyramid array in order arrangement. The method is simple in process, short in preparation period and mature in technology; and three structures such as a positive pyramid array, an inverted pyramid array and a positive and inverted pyramid combined array can be obtained by a method for preparing a template through selecting and fine turning. The method has wide application value in the fields of photovoltaic, magnetic memory devices, nano photoelectric devices, nano sensors, surface raman enhancement and surface plasma effect and the like.

The invention belongs to the field of a lead-free piezoelectric material and discloses BCT-BZT-BST (barium calcium titanate-barium zirconate titanate-barium stannate titanate) ternary system lead-free piezoelectric ceramic. The BCT-BZT-BST ternary system lead-free piezoelectric ceramic is characterized by having the following material components: Ba0.8-xCaxTi0.8O3-0.1BaTi0.9Sn0.1O3-0.1BaTi0.8Zr0.2O3, wherein x is in the range of 0.005 to 0.06. The BCT-BZT-BST ternary system lead-free piezoelectric ceramic is prepared from industrial raw materials by adopting a conventional piezoelectric ceramic preparation technology. The system is a perovskite phase. When x is in the range of 0.005 to 0.04, the BCT-BZT-BST ternary system lead-free piezoelectric ceramic is in morphotropic phase boundary region, has excellent piezoelectric property, has a piezoelectric constant d33 value of 420pC / N and an electro-mechanical coupling coefficient of 44 percent, and has a stable preparation process and wide application prospect.

The invention discloses a CRISPR-mediated rapid and effective crop site-specific gene fragment or allele replacement method and system. The system provided by the invention comprises a recombinant vector and a free donor fragment; the recombinant vector comprises a coding sequence of sgRNA1, an expression cassette of a Cas9 gene, a donor fragment and a coding sequence of sgRNA2; the donor fragmentcomprises a target of sgRNA1, a mutant segment and a target of sgRNA2; homologous recombination occurs between the mutant segment and a target segment; and the differences between the mutant segmentand the target segment are as follows: (1) a target nucleotide or fragment is replaced with a mutated nucleotide or fragment, (2) NGG in the target of sgRNA1 is mutated into non-NGG, and (3) the NGG in the target of sgRNA2 is mutated into non-NGG. The invention provides a feasible and effective method for replacing and integrating site-specific gene fragments or alleles for crop breeding improvement, and the method has a great application potential and a wide prospect.

The invention discloses a method for preparing a ZnO / Cu2O heterojunction material and a ZnO / Cu2O three-dimensional structure heterojunction solar cell. The preparation method of the heterojunction material includes growing an n-type ZnO nanorod array on a substrate by a liquid phase growth method. Thin film, use alkaline copper salt solution as electrolyte, deposit at a deposition potential of -0.4~-0.6V for 60-150s, electrochemically deposit p-type Cu2O on the surface of ZnO nanorods to form a Cu2O seed layer; use alkaline copper The salt solution is a deposition solution, and the electrochemical deposition method is again used at a deposition potential of -0.05 to -0.3V to fully fill Cu2O from bottom to top into the gaps of the nanorod array to form a ZnO / Cu2O three-dimensional structure heterojunction material. The filling depth and density of the Cu2O semiconductor film of the present invention are increased, interface defects are reduced, and the heterojunction battery produced has high battery efficiency.