201results about How to "The preparation method is simple" patented technology

The invention relates to a preparation technology of a multi-purpose silicon micro-nano structure, and belongs to the preparation technology field of new materials. A preparation method of a large-area highly-orderly silicon micro-nano structure array is researched though the combination of the metal-catalyzed silicon corrosion technology and the photoetching technology. A micro structure image on a photoetching mask plate is accurately copied to the surface of a clean silicon chip coated with a photoresist by utilizing an electron beam or ultraviolet light and other exposure technologies so as to obtain the image required during the corrosion process and protected by etching resist. A metal silver film is deposited on the surface of the silicon chip after the surface of the silicon chip is processed by utilizing high-vacuum heat-evaporation and other technologies; after the etching resist coated on the surface of the silicon chip and the silver film coated on the resist are removed, the silicon chip is immerged into a closed container of hydrofluoric acid corrosion solution containing an oxidant and processed for 10 to 100 minutes so as to obtain the large-area highly-orderly silicon micro-nano structure array. The large-area highly-orderly silica micro-nano structure array has wide application prospect in the fields of solar batteries, lithium battery cathode materials, gas sensors, active surface reinforced Raman spectrometry substrate and the like.

The invention discloses a making method of titanium alloy / TiAl composite board, which is characterized by the following: overlapping A (titanium foil) and C (aluminium foil); placing at least one layer B (titanium or titanium alloy foil, titanium or titanium alloy board) on the upper and lower surfaces of overlapped layer or among overlapping layer; setting adjacent layer C to B; adopting three layers or more of A or B as the most outer layer; jacketing; rolling under 20-750 deg.c and 750-1300 deg.c.

A process for preparing the array of monosilicon nano wires arranged monoaxially includes such steps as washing silicon chip, chemical plating to deposit a nanofilm of Ag or Au on its surface, immersing it in the mixed solution of hydrofluoric acid, iron (or magnesium or nickel) nitrate or H2O2 in a sealed container, baking at ordinary temp-60 deg.C, cooling, rinsing in deionized water, and drying in air.

The invention discloses a nonwater-based grinding-medium-free chemical mechanical polishing solution adapted to polishing crispy and easily deliquescent crystal. The components of the polishing solution are as below in terms of weight percentage: 40-65% of oil phase, 10-22% of deionized water, and the balance of surface active agent. The oil phase is alcohol or ester, and the surface active agent can adopt high-carbon fatty alcohol polyethenoxy ether, polyoxyethylene nonyl phenyl ether, polyoxyethylene octyl phenyl ether or polyoxyethylate amide of a non-ionic surface active agent. The invention has the advantages of simple polishing solution preparing method, good fluidity, no toxicity, no pollution, no corrosion, good stability, no easy volatilization and long service life. The surface of a polished sample has a roughness concentration which can be up to 1.7 nm, is free from such defects as scratch, damage, and the like, and can be permanently stored at the room temperature in the airtight condition.

The present invention is preparation process of nanometer silicon line array, and belongs to the field of nanometer material preparing technology. The preparation process includes the following steps: washing silicon chip successively with acetone, alcohol, acid cleaning solution and No. 1 standard washing solution; dropping 0.01-0.9 wt% concentration polyethylene pellet solution to the surface of silicon chip and drying in the air; etching the silicon chip with reaction ion in oxygen atmosphere for 1-2 min, maintaining at 90-110 deg.c for 1-6 min, depositing 25-50 nm thick Ag film with vacuum deposition instrument; and soaking the deposited sample inside the etching solution of hydrofluoric acid and hydrogen peroxide for 4-30 min. The preparation process can prepare great area ordered arranged nanometer silicon line array, and is simple, low in cost and suitable for large scale production.

This invention refers to antibacterial mucilage glue fiber and preparation method. This antibacterial mucilage glue fiber takes nature aloe gel antimicrobial. Mucilage fiber filature liquid constitute of mucilage glue fiber screw former liquid and nature aloe gel. Nature aloe gel accession quantity is about mucilage glue fiber filature former liquid 1%-10%. The preparation method include hereinafter step: (1) disperse the nature aloe gel, get nature aloe gel accession quantity which grain diameter is less than 0.1um. (2) Let the nature aloe gel accession about 1%-10% rate of mucilage glue fiber join in the mucilage glue fiber filature former liquid, then filature spin as common wet method molding and get antibacterial mucilage glue fiber. The fiber germproof function is permanence, no side effect to human and has obvious change in antibacterial capability and biology capability .In this method, technics is simple and fit to industrialization produce.

A preparation method for Si and SiGe quantum spot array includes: carrying out acetone vibration cleaning, alcohol vibration cleaning piranha solution and RCA solution process orderly to a silicon chip or silicon chip deposited with a SiGe film then dropping the styroflex small ball solution with the quality percentage concentration sphere of 0.01-0.9% into the surface cleaned silicon chip or that with SiGe film to be put in air for natural drying then to be heat-insulated under 90-110deg.C for 1-6min and depositing an Ag film of 25-100nm on the substrate wit a vacuum plating instrument, immersing the deposited Ag film sample in the etching solution of hydrofluoric acid and ferric nitrate for process.

The invention belongs to the technical field of preparation of nano-material arrays and provides a method for preparing a zinc oxide nano-array at low temperature. In the method, a zinc oxide crystal seed layer is prepared on the surface of a substrate through low-temperature chemical reaction, and then, the zinc oxide nano-array is synthesized through low-temperature hydrothermal reaction. The method comprises the following steps of: taking an ethanol solution of zinc acetate and an ethanol solution of sodium hydroxide as raw materials for preparing the zinc oxide crystal seed layer; soaking the cleaned substrate in the two solutions alternately, baking for many times, then uniformly dropping a small amount of deionized water, and baking to prepare the zinc oxide crystal seed layer on the substrate; putting the substrate of the prepared crystal seed layer into the mixed aqueous solution of zinc nitrate and hexamethylene tetramine, and insulating for a period of time; and taking out the substrate, cleaning, and then drying to obtain a nano-zinc oxide array. The method provided by the invention realizes the purpose of preparing zinc oxide nano-arrays in a large area at low temperature (lower than 100 DEG C), and has the advantages of simple process and low cost.

The invention discloses a hydrophobic gas-phase SiO2 nano-pore heat-insulating material and a preparation method thereof. The material is prepared from the following raw materials in percent by weight: 60-80% of hydrophobic gas-phase SiO2, 3-10% of pretreated glass fiber, 8-20% of an infrared shielding agent and 3-10% of an inorganic adhesive. The heat-insulating material has excellent hydrophobic performance, heat-insulting performance and mechanical properties.

The invention discloses a process for preparing ultra-hydrophobic silica, and the preparation process is simple in technique, temperate in reaction conditions and relatively low in preparation cost. The steps of the process for preparing the ultra-hydrophobic silica comprise (A) dispersing: under the normal temperature, mixing silicon dioxide solid powder and solvent, uniformly dispersing the mixture and adding the mixture into a reactor, (B) reaction: heating up the reactor to 60-100 DEG C, adding finishing agent 1, after continuously stirring and reacting 20-40 minutes, heating up the temperature to 100-140 DEG C and reflowing 3-6 hours for sufficient reaction, reducing temperature to 60-100 DEG C, adding finishing agent 2, stirring and reacting for 1-4 hours to enable the surface of the silicon dioxide to be ultra-hydrophobic, (C) separating and drying: washing and filtering the ultra-hydrophobic silica by the solvent, removing the solvent and the remained reactant and drying in vacuum.

The invention belongs to the field of inorganic nano material synthesis and particularly relates to a preparation method and use of millimetre-sized mesoporous carbon spheres. The preparation method comprises the following steps of: dissolving resorcinol in ethanol serving as a solvent; adding furfural and ethanol solution of hydrogen chloride, and stirring the mixture at 0 to 15 DEG C for 10 to 120 minutes; adding aqueous solution of hexamethylenetetramine and pore-forming material into the prepared solution to obtain solution of a precursor; adding the prepared solution of the precursor into liquid max containing an emulsifier, and stirring the solution to perform per-polymerization; volatilizing the solvent, filtering the remaining material, and washing and drying the product obtained by filtration; and carbonizing the product to obtain the millimetre-sized mesoporous carbon spheres. The preparation of the millimetre-sized mesoporous carbon spheres of the invention is performed under simple conditions and with easy operation. The millimetre-sized mesoporous carbon spheres prepared by the method have the characteristics of adjustable size, large specific surface area, large pore volume and the like, and can be used as adsorbent for hemoperfusion and the like.

A solidifying agent for the self-hardening furan resin contains toluene (0-5 wt.%) or (0-20 wt%), xylene (2-10) or (5-25), sulfuric acid (35-65) or (10-40), water (0-20) or (20-60), methanol (10-45) or (6-30), alcohol (0-9) or (0-6), and regulating agent (0.05-0.9) or (0.1-0.7) for fast-hardening or slow-hardening furan resin used for casting.

The invention discloses a SiOC porous ceramic supported La0.9K0.1CoO3 nano particle catalyst and a preparation method. SiOC porous ceramic is used as a carrier in the catalyst, and La0.9K0.1CoO3 nano particles are supported on the carrier. The preparation method comprises the following steps of: preparing the La0.9K0.1CoO3 nano particles by using lanthanum nitrate, potassium acetate, cobalt acetate and glucose; performing oleic acid packing and styrene emulsion polymerization reaction on the La0.9K0.1CoO3 nano particles to obtain modified La0.9K0.1CoO3 nano particles; preparing a catalyst precursor by using hydrogen containing polydimethylsiloxane (PHMS), 1,3,5,7-tetramethyl-1,3,5,7-tetravinylcyclotetrasiloxane (D4Vi), methyl vinyl siloxane coordinated platinum catalyst and the modified La0.9K0.1CoO3 nano particles; and performing pyrolysis on the precursor to obtain the catalyst. The preparation process is simple; and the modified La0.9K0.1CoO3 nano particle catalyst has high mechanical strength, good chemical stability, high thermal stability and high chemical activity. The catalyst is particularly suitable for aftertreatment of diesel engine automobile tail gas.

The invention provides a porous ceramic preparation method, which comprises: mixing first ceramic powder and a first sintering agent, and performing drying to obtain second ceramic powder, the first sintering agent comprising a sodium silicate aqueous solution; mixing the second ceramic powder, an organic auxiliary agent and a pore forming agent to obtain ceramic slurry, performing injection molding on the ceramic slurry to obtain a ceramic green body, the injection pressure of the injection molding being 1MPa to 10MPa, and the temperature being 50 DEG C to 150 DEG C; and degreasing and sintering the ceramic green body to obtain the porous ceramic. According to the preparation method, the yield of porous ceramic production is effectively improved, the steps are simple, the process is simple, multiple ceramic green bodies can be produced at a time, the automation efficiency is high, and the porous ceramic is suitable for large-scale industrial production. The invention further providesporous ceramic and application thereof in an electronic cigarette atomizer. The porous ceramic has good compression resistance and porosity.

The invention relates to an edible bird's nest acid drink and relative production. Wherein, said preparation comprises that dissolving 0.1mg-100g edible bird's nest into 1L water; adding drink as water, mineral water, soft drink, tea, etc. The invention at least comprises edible bird's nest acid and one drink.

The invention relates to the technical field of textile fibers and discloses a preparation method of flame-retardant and antibacterial precursor fibers. The method comprises steps as follows: material preparation, polypropylene dissolution, addition of an antibacterial agent, addition of a flame retardant, spinning and the like, wherein the antibacterial agent is composition of aluminum phosphate, calcium phosphate and aluminum triphosphate; the flame retardant is composition of ammonium bicarbonate, sodium bicarbonate, potassium bicarbonate and diatomaceous earth. The preparation method is simple and can be implemented by slight modification on existing production equipment, and the updating and modification difficulty is lower. The prepared precursor fibers are endowed with good flame retardance and antibacterial function on the basis that advantages of original acrylic fiber are kept.

The invention discloses a process for preparing super hydrophobic silicon dioxide by the one-step method, the process of preparation is simple in technique, mild in reaction conditions and low in preparation cost. The prepared silicon dioxide has a water contact angle up to 155.1 degrees, which can effectively prevent secondary agglomeration on the surface of the silicon dioxide, thereby improving the interfacial compatibility of inorganic phase and organic phase and strengthening the combination force between the silicon dioxide and polymer. The method comprises steps of (A) dispersing, mixing the silicon dioxide solid powder and dissolvent at normal temperature and adding to a reactor after being uniformly dispersed, (B) reaction, heating the reactor to 60-100DEG C, adding in treating agent, continuing stirring to react for 20-40 minutes, then heating to 100-140 DEG C and flowing back for 3-6 hours to enable the surface of the silicon dioxide to be extra hydrophobic, (C) dispersing and drying, washing by using the dissolvent and filtering the super hydrophobic silicon dioxide, removing the dissolvent and residual reactant and vacuum-drying.

The invention discloses a preparation device for weak acid disinfection solution on the basis of hypochlorous acid, and disinfection solution. The preparation device comprises a liquid mixing bucket,an ion water supply path, an alkali liquor supply path, an acid liquid supply path, an online PH (Potential of Hydrogen) instrument and a controller, wherein the ion water supply path, the alkali liquor supply path and the acid liquid supply path are used for entering the liquid mixing bucket; the liquid mixing bucket is used for mixing ion water, alkali liquor and acid liquid to prepare the disinfection solution; the online PH instrument is used for carrying out real-time detection on the PH value of the disinfection solution in the liquid mixing bucket, and transmitting the real-time PH datato the controller; the proportion of the ion water, the alkali liquor and the acid liquid is calculated through the controller and is respectively fed back to an ion water metering pump, an alkali liquor metering pump and an acid liquid metering pump to regulate a liquid proportion in the liquid mixing bucket and realize the regulation of the PH value. The preparation method has the advantages ofconvenience, simple technical equipment, low price and cost saving, preparation efficiency is improved, in addition, real-time communication between the online PH instrument and a PLC (Programmable Logic Controller), calculation and the monitoring of the parameter values of finished product liquid in the liquid mixing bucket can be realized, and accurate control and intelligent control are achieved.

A method for preparing biological feed by using waste edible mushroom rods as raw material comprises the following specific steps: selecting and mixing the waste edible mushroom rods and one or more of rich-resource and low-price rural crop straws such as rice straws, wheat straws, corn straws, peanut vines, sweet potato vines, soybean straws, non-toxic weeds and broadleaf leaves, as main raw materials; blending with a small amout of concentrate material; fermenting through high-quality probiotic, namely EM, to obtain the final low-cost biological feed. Through the implementation of the method, the main raw materials, namely the waste edible mushroom rods and the crop straws, are very wide in sources, easy to collect and low in cost; besides, the waste edible mushroom rods also contain plenty of mycelia, while the mycelia contain rich protein and various amino acids; through improvement and conversion, the waste edible mushroom rods and the crop straws are prepared into comprehensive-nutrition palatable low-cost feed which can be directly absorbed by animals.

The invention relates to a nanocrystal nonvolatile memory based on strained silicon in the technical fields of nano electronic components and nano processing. The nanocrystal nonvolatile memory based on strained silicon comprises a silicon substrate, a GeSi gradually-doped buffer layer, a Gel-xSix relieving layer, a strained silicon layer, lightly-doped drain electrodes, a source conduction region, a drain conduction region, a tunneling dielectric layer, a nanocrystal charge storage layer, a control grid dielectric layer and a grid electrode material layer, wherein the GeSi gradually-doped buffer layer, the Gel-xSix relieving layer and the strained silicon layer are deposited on the silicon substrate; the lightly-doped drain electrodes, the source conduction region and the drain conduction region are arranged at two sides in the silicon substrate; the tunneling dielectric layer covers a current carrier channel arranged between the source conduction region and the drain conduction region; the nanocrystal charge storage layer covers the tunneling dielectric layer; the control grid dielectric layer covers the tunneling dielectric layer; and the grid electrode material layer covers the control grid dielectric layer. According to the invention, the mobility is increased by utilizing the strained silicon, thereby increasing the reading current, and simplifying a peripheral circuit; the nanocrystal nonvolatile memory based on strained silicon adopts the nanocrystal as a floating grid material, so that the performance of a storage device is improved, and particularly, the storage performance, such as storage windows, programming / erasing speed, data retention characteristic and the like, is improved comprehensively.

The invention discloses a foodstuff fresh-keeping agent, which is prepared from the raw materials of (by weight ratio) Pyrrolidine Carboxylic Acid Na 60-80%, beeswax 5-15%, edible starch 15-30%, trace quantity of sucrose ester and edible conservative. The agent can be applied to vegetable, fruits, fresh flowers, seafood product and meat products.

The invention discloses a phosphor copper ball with grooves at the surface and a preparation method thereof. The phosphor copper ball comprises a phosphor copper ball body, and grooves arranged at the surface of the phosphor copper ball body at intervals, and the height difference between the bottoms of the grooves and the surface of the phosphor copper ball body is 1-3mm. Compared with the existing solid phosphor copper ball which is smooth and flat in surface, the phosphor copper ball with the grooves at the surface provided by the invention has large superficial area, can bear greater current, discharges more copper ions in the electroplating process, and is high in usage rate.

The invention provides a preparation method for high-specific-surface porous carbon modified by coal-tar pitch. The preparation method comprises the following steps: dissolving cobalt nitrate in deionized water, carrying out stirring, and adding ammonia water; adding pitch-based active carbon obtained after one-step activation of coal-tar pitch and carrying out uniform mixing under stirring; subjecting a mixture obtained in the previous step to a hydro-thermal reaction and carrying out centrifugation; washing a solid obtained in the previous step and successively carrying out centrifugation, drying and grinding; and subjecting solid powder obtained after grinding to calcining in a tubular furnace in an inert gas environment so as to obtain the high-specific-surface porous carbon modified by the coal-tar pitch. The invention also provides a method for preparing a membrane electrode assembly for a fuel cell from the high-specific-surface porous carbon modified by the coal-tar pitch. Theporous carbon prepared in the invention has a high specific surface area and a porous structure, which is beneficial for transmission of substances like oxygen, so dependence on the precious metal Ptis greatly reduced; the raw material for preparation of the porous carbon is cheap coal-tar pitch; and the preparation method is simple in process, convenient to operate, low in cost, friendly to environment and suitable for industrial production.

The invention discloses a preparation method of a SnOx / carbon nano-tube composite material for a lithium ion battery. The preparation method comprises the following steps: by taking organic metal stannous compound such as stannous octoate as a tin source and taking organic solvent such as isopropanol as a dispersing agent of the tin source and a carbon nanotube, uniformly mixing the tin source and carbon nanotube in an ultrasonic stirring manner, removing the solvent in an evaporating way, thereby obtaining a viscose mixture; or directly uniformly mixing oily stannous octoate and carbon nanotube in a way such as grinding / ball milling, further carrying out heat treatment under nitrogen or air, regulating the temperature and atmosphere, thereby obtaining the SnOx / carbon nanotube composite material. The prepared lithium ion battery composite electrode material is simple in preparation method, low in cost, controllable in material structure and excellent in electrochemical performance.

The invention discloses a preparation method of a molybdenum disulfide composite material. The preparation method includes the steps: (1) dispersing graphene oxide into water, adding sodium molybdateand thioacetamide, performing hydrothermal reaction to obtain an MoS2 / reduced graphene oxide composite material; or dissolving the sodium molybdate and the thioacetamide in the water and performing hydrothermal reaction to obtain petaloid MoS2; (2) soaking the composite material or petaloid MoS2 obtained in the step (1) in porphyrin solution to obtain the molybdenum disulfide composite material. According to the composite material prepared by the preparation method, the photoelectrochemical properties of molybdenum disulfide can be remarkably improved, and the application of the molybdenum disulfide to the field of photocatalytic degradation of organic matters is promoted.

The invention relates to the field of a photoelectric energy source, and discloses a perovskite photonic crystal, a preparation method thereof, a perovskite solar cell and a preparation method of the perovskite solar cell. The perovskite photonic crystal comprises a material providing a photonic crystal structure and a substance, wherein the substance is arranged in the material providing the photonic crystal structure and has a perovskite structure, and the material providing the photonic crystal structure is at least one of an electron transmission layer material, a hole transmission layer material and a support material. The perovskite solar cell comprises a transparent conductive substrate, a titanium dioxide compact layer, a perovskite photonic crystal layer, a hole transmission layer and a counter electrode. The perovskite photonic crystal obtained by the invention has the characteristics of highly ordered structure, high carrier transmission efficiency and low electron-hole combination; the perovskite solar cell obtained by the invention has the characteristics of high photoelectric conversion efficiency and high repeatability and stability; and moreover, the production process is simple, is low in cost and is suitable for mass production at a large scale.

The invention provides a preparation method of a lignocellulose / silver halide composite material and the lignocellulose / silver halide composite material prepared through the method.In the method, only lignocellulose, ionic liquid and silver-containing compounds are adopted for synthesis through microwave heating, and the lignocellulose / silver halide composite material with excellent photocatalytic activity is obtained.The preparation method is simple in technology and easy to implement, no complicated and expensive equipment is needed, and industrial popularization is facilitated.

The invention discloses anti-corrosion super-hydrophobic coating and a preparing method and application thereof. The coating comprises, by weight, 0.8-1.2 parts of SBS resin (a styrene-butadiene-styrene triblock copolymer) produced industrially on a large scale, 0.01-0.15 part of natural rubber, 10-30 parts of a solvent, 0.1-2.0 parts of nanosilicon dioxide sol modified by a silane coupling agentand 2.0-8.0 parts of nanometer titania. The preparing method includes the steps of dissolving the SBS resin and the natural rubber in the solvent to be stirred, and adding the modified silicon dioxidesol and nanometer titanium dioxide to be stirred at a room temperature to prepare the coating. The obtained coating has the contact angle larger than 150 degrees and the rolling angle smaller than 6degrees and still has super hydrophobicity after being soaked in saline (3.5% of NaCl) for 10 days. By synergistically modifying the modified silicon dioxide sol and nanometer titanium dioxide, the multi-scale coarse structure on the surface of the plastic coating has excellent and stable hydrophobicity, has good high temperature resistance, ageing resistance and mechanical performance, and is simple in preparing method and wide in application prospect.

The invention discloses a preparation method of a positive electrode catalyst Mn2O3 of a lithium carbon dioxide battery. The method comprises the following steps of dissolving PVP into absolute ethylalcohol and then adding Mn(CH3COO)2.4H2O; carrying out magnetic stirring and reflux reaction at 40-80 DEG C to obtain a white precipitation product and carrying out vacuum drying to obtain a powdery precursor; and carrying out heat preservation in a tube furnace at 500-700 DEG C for 2-4h to obtain the positive electrode catalyst Mn2O3 of the lithium carbon dioxide battery. The positive electrode catalyst Mn2O3 of the lithium carbon dioxide battery is used for preparing a positive electrode of the lithium carbon dioxide battery. The materials are easy to obtain, and the method is simple in preparation process and technology, low in cost and friendly to environment.