70results about How to "With large-scale industrial production" patented technology

The invention provides a polyfunctional group oxime and a preparation method thereof, and novel dynamically-repairable polyurethane based on the oxime and a preparation method thereof, the oxime is ahighly reactive organic substance, the oxime and an isocyanate can be prepared into the polyurethane at room temperature without a catalyst. It is noteworthy that the oxime is usually obtained by reacting a carbonyl compound (an aldehyde or a ketone) with hydroxylamine under mild conditions, and the process is an atomically-economic, high-yield and simple reaction. The thermosetting oxime-based polyurethane is cut into small pieces, and the small pieces can be hot-pressed again for molding under the conditions of 90-120 DEG C and 1-100 MPa, and the obtained thermosetting polyurethane substantially restores original mechanical properties; the reaction for preparing the polyurethane can be carried out without the catalyst at the room temperature. The preparation method is simple, the preparation process has wide sources of raw materials and low production cost, and the method has a prospect of large-scale industrial production.

The invention discloses a preparation method of a polyimide/graphene composite material. The preparation method comprises the following steps: firstly, mixing polyimide with graphite and stirring at a high speed to obtain polyimide/graphene composite particles; and then carrying out hot press molding on polyimide/graphene composite particles to prepare the composite material. According to the preparation method of the polyimide/graphene composite material disclosed by the invention, under the condition that any reagent is not added, the modification of grapheme on polyimide is achieved so as to obtain the composite material with excellent electrical conductivity and the preparation method is simple and environmentally friendly and is suitable for industrial production.

The invention, which belongs to the field of sensors, in particular relates to an electronic skin and a preparation method thereof. The invention provides a piezoresistive electronic skin comprising asensing layer; and sides with pit structures of two elastomer films having pit structures are laminated and assembled in opposite to assemble the sensing layer. According to the invention, since thesensing layer has a unique laminated pit micro structure, the sensitivity of the electronic skin is enhanced based on the micro structure; and the electronic skin has excellent stability and is capable of detecting various signals like a sound signal and a sliding signal as well as a body motion state and a physiological signal and the like. The electronic skin has the potential of application tobody health management.

The invention provides a preparation method for protonic acid doped polyaniline, which comprises the following steps: at the room temperature, phenylamine and protonic acid are mixed to form a premixed solution, a template is added into the premixed solution, ultrasonic mixing and ice-water bath treatment are conducted sequentially, an ultrasonic dispersion solution is obtained, an oxidizing agentis dropwise added into the ultrasonic dispersion solution, standing reaction lasts for 20h-30h, and a protonic acid doped polyaniline material is prepared; the protonic acid may be oxalic acid, hydrochloric acid, sulfuric acid, citric acid, camphorsulfonic acid or benzoic acid; the molar ratio of the phenylamine, the protonic acid, the template and the oxidizing agent is 1:(2-3):(2-3):(5-10). Theinvention further provides a protonic acid doped polyaniline material and a room temperature ammonia gas sensor, and the room temperature ammonia gas sensor has relatively good sensibility and selectivity for ammonia gas, relatively low power consumption and relatively simple processing technology under the condition of room temperature.

The invention discloses a multifunctional cooling fabric for summer. The fabric comprises, by weight, 40-60 parts of multifunctional cooling fibers, 5-15 parts of hemp fibers, 15-25 parts of cotton fibers and 8-15 parts of silk fibers. A production method of the fabric includes the following steps: preparing peppermint oil microcapsules, producing multifunctional cooling fiber slices, producing the multifunctional cooling fibers, and producing the multifunctional cooling fabric for summer. The multifunctional cooling fabric for summer has cooling, spirit-raising, bacterium preventing and inflammation eliminating effects, has the advantages of cooling during wearing, easiness in coloring, good sweat absorption effect, no irritating effect on skins, good gloss, good touch softness, smooth and soft hand feeling, and laundering durability; and the peppermint oil microcapsules on the surface of the fabric and in the fiber gaps of the fabric have a complete form and has no wall breaking phenomenon, so the slow release effect of the peppermint oil microcapsules can extend the cooling feeling of the fabric and the timeliness of the peppermint smell.

The invention relates to a preparation method of a different stack layer carbon fiber cloth/TPU composite material with a high electromagnetic shielding performance. According to the preparation method, a silane coupling agent KH-550 is used to modify carbon fiber cloth, TPU particles are melted, cooled, and moulded to produce a TPU plate, and finally, a small pressure is applied to prepare the carbon fiber cloth/TPU composite material at a high temperature, and at the same time, the different stack layer carbon fiber cloth/TPU composite material is prepared. The obtained product has the characteristics of low cost, high strength, and excellent electromagnetic shielding performance.

The invention discloses a nano-material immobilized microorganism remediation agent and a preparation method and application thereof. The preparation method comprises the following steps of: (1) preparation of paracoccus aminovorans thalli; (2) preparation of an embedding agent graphene oxide-based nanocomposite material; (3) preparation of a cross-linking agent CaCl2 solution; and (4) preparationof the nano-material immobilized microorganism remediation agent. The graphene oxide-based nano-material immobilized microorganism remediation agent prepared by the preparation method disclosed by the invention is high in applicability to the environment, stable exertion of a degradation function of polycyclic aromatic hydrocarbon degradation microorganisms is guaranteed, the degradation efficiency of a traditional immobilized microorganism preparation is improved, and the microbial remediation period of polycyclic aromatic hydrocarbon contaminated soil is shortened; the preparation method issimple to operate, low in cost and good in effect, has a prospect of large-scale industrial production, is suitable for in-situ remediation of polycyclic aromatic hydrocarbon contaminated soil, and has no secondary pollution.

The invention discloses an elastomer film with a multistage microstructure, a preparation method of the elastomer film and a flexible pressure sensor comprising the elastomer film, a process of combining a template method and electrostatic spinning is adopted, and the single side of the prepared elastomer film is provided with the multistage microstructure composed of randomly distributed fiber networks, and the requirement of low cost is met while stable and rapid preparation is realized. In addition, the electrostatic spinning technology is widely applied in industrial practice, and therefore the preparation method has the application prospect of large-scale industrial production. The prepared flexible pressure sensor is high in sensitivity (larger than 63.93 kPa <-1 >) and large in sensing range (larger than 160 kPa), not only has strong response to tiny vibration such as human pulse and vocal cord sounding, but also has stable response to large limb movement such as joint movement, shows good response in real-time monitoring of pressure, and is huge in application potential.

The invention provides a room-temperature forming method for a 2198 aluminum-lithium alloy panel. The method includes the following steps that firstly, solution treatment is conducted, wherein a panel is placed in a heating furnace, and the heat preservation time is controlled; secondly, quenching treatment is conducted, wherein the panel subjected to solution treatment is rapidly transferred into low-temperature water, the transfer time is strictly controlled, and it is ensured that the whole panel is completely quenched; thirdly, room-temperature forming is conducted, wherein the panel is rapidly taken out of the water, and leveling and forming of the panel are completed within a short period of time; fourthly, natural aging is conducted, and the panel stands for 3-9 days; fifthly, manual aging is conducted, wherein a part is placed in the heating furnace, and heat preservation is conducted for a certain period of time; and sixthly, the part is taken out and subjected to edge cutting and surface treatment, and a 2198 aluminum-lithium alloy panel part is obtained. According to the room-temperature forming method, by conducting room-temperature forming before aging treatment is conducted on the 2198 aluminum-lithium alloy panel, the plastic forming and the necessary pre-forming before aging are combined together, the difficulty that plasticity of a 2198 aluminum-lithium alloy is poor is avoided, strength of the part is increased, the processing cost is effectively reduced, the geometric precision of the part is improved, and potential of large-scale industrialized production is achieved.

The invention discloses a hydrothermal nanometer fluorescent powder preparation method, belongs to the technical field of fluorescent powder preparation, and aims to provide a one-dimensional red nanometer fluorescent powder preparation method. The hydrothermal preparation method includes the steps of determining a molar ratio of components according to a general chemical formula Ca(1-z)RwOu:zEu3+ or MyCa(1-x-y)RwOu:xEu3+, and preparing various raw materials proportionally; dripping the raw materials into a certain concentration of ammonium bicarbonate solution at a certain speed, stirring with aging for 24 hours, and performing water washing for filtering for 4 times continuously to obtain a precursor; placing the obtained precursor into a mixed solvent of absolute ethyl alcohol and water to obtain a mixture, pouring the mixture into a stainless steel autoclave with a silver liner, and heating to 350 DEG C at the speed of 1.5 DEG C/min; keeping the temperature at 350 DEG C for 4 hours, powering off, cooling to a room temperature naturally, taking an obtained product out, and subjecting the product to water washing, suction filtering and drying to obtain the nanometer fluorescent powder. The blue-light and near ultraviolet excitation type hydrothermal one-dimensional red nanometer fluorescent powder preparation method has the advantages of low cost and safety in operation, and the prepared one-dimensional red nanometer fluorescent powder is regular in shape and small in granularity.

The invention relates to a method for emulsifying an oil product by using a membrane, which is characterized in that a high-flux silicon carbide membrane with a specific structure after surface property regulation is adopted as an emulsifying medium, water is adopted as a dispersion phase, an oil product is adopted as a continuous phase, the dispersion phase passes through ceramic membrane holes at low pressure and high flux, and the oil product is emulsified under the action of shearing force formed by continuous phase flowing. The dispersed phase leaves the surface of the membrane and enters the continuous phase, so that water and oil are fully mixed and dissolved, and water-in-oil emulsion with uniform particle size is formed. The method has the advantages of high flux, low energy consumption, simple device and the like, is a way for efficiently preparing the water-in-oil emulsion, and is suitable for large-scale industrial application, and liquid drop coalescence can be reduced and the emulsion stability can be improved under the condition that an emulsifier is not added by regulating and controlling the surface properties and operation parameters of the membrane.

The invention discloses an amorphous manganite/graphite composite nano material and a preparation method and application thereof to a lithium ion battery, and belongs to the technical field of lithium ion battery materials. The preparation method includes the steps that graphite and potassium permanganate are ball-milled in an aqueous solution, and then washing, ultrasonic treatment and drying are conducted to obtain the amorphous manganite/graphite composite nano material. The mass fraction of graphite in the obtained material is 5.2-58.6%, when the material is used for the negative pole of the lithium ion battery, the material has excellent electric performance, after circulation is conducted for 250 turns under the current density of 200 mA g<-1>, the material can still keep the reversible capacity of 977 mA h g <-1>, and under the condition of large current density (1000 mA g<-1>), after circulation is conducted for 200 turns, the reversible capacity can still be kept 300 mA h g<-1> or above.

The invention provides a fuel-cell catalyst doping with a porous diamond carrier and a preparation method. A flaky metal electrode material is used as a substrate; an arc plasma is used for depositinga diamond film on a surface layer; a used gas source is hydrogen, argon and methane; a mixed gas of the hydrogen and the methane is sprayed through a nozzle in a plasma muzzle; the argon and a gas-state/steam-state doping source is sprayed through a nozzle outside the muzzle by loading nano platinum/tin alloy powder, and a composite material doping with porous diamond/alloy is formed on the surface layer of the substrate. According to the fuel-cell catalyst doping with the porous diamond carrier and a preparation method provided by the invention, the porous nano diamond is used as a carrier for coating the nano alloy, and the porous nano diamond is used as the carrier so as to have high oxidation resistance and good active metal dipersibility, so that the stability of the catalyst is improved, and the defect that the catalytic activity of the catalyst is further reduced since the active metal dipersibility cannot be controlled when current nano diamond particles are used as the carrier is further overcome.

The invention provides a preparation method of blue light and near ultraviolet excitation type one-dimensional red nano fluorescent powder, belonging to the technical field of luminous material preparation. The method comprises the following steps of: preparing all raw materials according to the molar ratio of the components determined by the chemical general formula of red nano fluorescent powder Ca(1-z)RwOu:zEu<3+> or MyCa(1-x-y)RwOu:xEu<3+>, wherein R is at least one of Ge and Si, and M in an M source is at least one of Li, Na, K, Sr, Mg and Al; adding water into the raw materials and performing ultrasonic treatment for 30-60 minutes; transferring the product into a reaction kettle, and controlling the filling degree of the reaction kettle to be 60-85%; preserving heat at 100-200 DEG C for 1-48 hours; cooling and filtering; and drying the filter residue at 60-90 DEG C to obtain one-dimensional red nano fluorescent powder. The method provided by the invention has the advantages of simple preparation technology, safety and controllability, low preparation temperature, low energy consumption and uniform distribution of the components, and is suitable for industrial production.