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33results about How to "Easy to implement application" patented technology
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Flexible pressure sensor and preparation method thereof
ActiveCN106197772AHigh sensitivityImprove reliabilityForce measurement using piezo-resistive materialsElectrical resistance and conductanceIsolation layer
The invention discloses a flexible pressure sensor which comprises an induction layer, a substrate layer, an isolation layer and electrodes. The isolation layer is positioned between the induction layer and the substrate layer and bonded to the induction layer and the substrate layer, and enables electric contact between the induction layer and the substrate layer to be isolated discontinuously; the surface of the induction layer is provided with a first conductive layer, the surface of the substrate layer is provided with a second conductive layer, and the first and second conductive layers are bonded to the isolation layer in opposite directions; and the electrodes are led out of the first or second conductive layer and connected with an external circuit. The flexible pressure sensor is used to detect the size and fluctuation of pressure, a flexible conductive material on the specific substrate is bonded to other conductive substrate, the electrodes are led out, change of resistance between the electrodes is measured, and the size and fluctuation of the pressure is detected in directly. The pressure sensor of high flexibility and high reliability can be applied to a flexible bearing body, technology is simple, and the sensor can be compatible with a present processing technology of a resistant screen to realize scaled production and application.
Owner:常州第六元素半导体有限公司
Halogen-free high-efficiency flame retardant composition and preparation method thereof
InactiveCN102337034AImprove thermal stabilityImprove liquidityFibre treatmentPolyolefinPolymer science
The invention discloses a halogen-free high-efficiency flame retardant composition and a preparation method thereof. The halogen-free high-efficiency flame retardant composition is prepared from the following components in percentage by mass: 10-80% of phenyl melamine carboxyethyl phenyl phosphinic acid condensation compound, 15-70% of melamine and / or derivative thereof and 5-20% of organic phosphate. The halogen-free flame retardant composition can be used for flame retarding of various polyolefin, nylon, polyurethane, polyester and other synthetic materials and textiles, and is particularly suitable for polyester and nylon engineering plastic; and by the addition of 12wt% of the flame retardant composition to polybutylene terephthalate (PBT) resin, the flame-retarding level can reach UL 94 V-0 (1.6 mm). The flame retardant composition has the characteristics of high flame retarding efficiency, good fluidity, no precipitation and the like, and can meet the use requirements of flame-retardant resin for electric appliance shells and supports, electronic and electric device connectors and the like.
Owner:DONGHUA UNIV
Shaped heat storage material and preparation method thereof
ActiveCN110305635AImprove heat storage capacityHigh heat storage capacityHeat-exchange elementsConductive materialsHeat storage material
The embodiments of the invention relate to the field of heat storage materials, in particular to a shaped heat storage material and a preparation method thereof. The preparation method comprises the steps that a high thermal conductive material is prepared into porous foam or an aerogel, then a heat storage material is loaded to obtain a shaped composite heat storage material with a rapid heat charging and discharging capacity; and then the shaped composite heat storage material is mixed with concrete to be poured and hardened to obtain the shaped heat storage material suitable for various shapes, sizes and occasions, so that the operational performance of the heat storage material is greatly improved, and the application range of the heat storage material is expanded. The preparation method can be used for preparing the shaped heat storage material with high heat storage capacity, the rapid heat charging and discharging capacity, shaping heat storage capacity and high convenience of use, and can be widely applied to the fields such as heat energy storage, heat supply, heating and industrial waste heat recycling.
Owner:TIANJIN POLYTECHNIC UNIV
Preparation method of graphene/aluminum composite material
The invention discloses a preparation method of a graphene / aluminum composite material. The preparation method specifically includes the following steps that graphene oxide powder is evenly dispersed in an alcohol solution, and a graphene oxide alcoholic solution is prepared after emulsification and ultrasonic treatment; aluminum powder is slowly added under stirring, temperature is controlled to be not higher than room temperature, stirring speed is controlled to be 100-1000 r / min, stirring time lasts for 1-5 h, and the uniform graphene oxide alcoholic solution containing the aluminum powder is obtained; solid and liquid separation is performed through the filtering technology and the centrifugal technology, and graphene oxide / aluminum dry powder is obtained after separated paste solid is frozen and dried; and the dry powder is subjected to heat reduction under Ar / H2 mixed atmosphere, and finally the graphene / aluminum composite material is prepared. The graphene / aluminum composite material prepared through the method has the beneficial effects of being high in strength, low in heat expansion coefficient and the like, and the specific stiffness coefficient and the special strength coefficient are remarkably increased. The method is simple in technology and efficient, industrialized production and application can be easily achieved.
Owner:TANGSHAN JIANHUA TECH DEV
Preparation method for single-layer graphene-enhanced aluminium-based composite material
The invention discloses a preparation method for a single-layer graphene-enhanced aluminium-based composite material, relates to a preparation method for an aluminium-based composite material, and aims to solve the problems of high cost and great dispersing difficulty in the application of a single-layer graphene-enhanced aluminium-based composite material field at present. The preparation method comprises the following steps: firstly, weighing multi-layer graphene micro-flake aluminium metal powder, and weighing industrial pure aluminium block bodies, wherein the industrial pure aluminium block bodies and the multi-layer graphene micro-flake aluminium metal powder are in the weight ratio of (3-10):1; secondly, dispersing multi-layer graphene micro-flakes and moulding a precast block; thirdly, performing aluminium metal infiltration; fourthly, performing large plastic deformation; fifthly, performing high-temperature fusion treatment; sixthly, performing repeated plastic deformation and high-temperature fusion treatment. According to the preparation method for the single-layer graphene-enhanced aluminium-based composite material, the low-cost multi-layer graphene micro-flakes are taken as a raw material of an enhanced body, so that the cost is low; the content of single-layer graphene in the obtained composite material can reach 4 weight percent at most. The preparation method is applicable to preparing the single-layer graphene-enhanced aluminium-based composite material.
Owner:HARBIN INST OF TECH
Independent-winding double-side plate permanent magnet linear motor
ActiveCN106100283ASimple winding processEasy to achieve coolingPropulsion systemsModular compositionElectricity
The invention discloses an independent-winding double-side plate permanent magnet linear motor, which comprises primary sides, a secondary side and air gaps. Each primary side comprises an armature winding, a primary magnetic-conductive iron core and a permanent magnet array. The two primary side assemblies are arranged at the two sides of the secondary side respectively to form a double-side structure. The primary magnetic-conductive iron core forms a big open slot structure, and the permanent magnet array is arranged in the slot mouth. One side, opposite to the corresponding open slot, of each primary magnetic-conductive iron core is provided with the armature winding; and the armature windings of the two primary sides at the two sides of the secondary side are same-phase windings, but electrical angle difference is 180 degrees. The secondary side is formed by magnetic-conductive iron cores having a salient pole structure, and gaps. The two air gaps are formed between the two primary sides and the secondary side respectively. The motor is a single-phase motor or a multi-phase motor, wherein the multi-phase motor is modular combination of the single-phase motors. Permanent magnets and the armature windings of the permanent magnet linear motor are arranged at the primary sides; through the big open slot structure design, winding heat dissipation is realized helpfully, and through the design of a large electrical load, thrust is improved; and meanwhile, the secondary side is simple in structure and light in weight.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Preparation method of graphene/aluminum composite material
The invention discloses a preparation method of a graphene / aluminum composite material. The preparation method comprises the following steps that a graphene oxide aqueous solution is subjected to ultrasonic treatment and is evenly dispersed; the obtained graphene oxide aqueous solution is cooled to be below 5 DEG C, aluminum power is slowly added in a stirring state, the temperature is controlled to be smaller than 5 DEG C, the stirring speed is 100-1,000 turns / min, the stirring duration is 1-2 hours, and the uniform graphene oxide aqueous solution with aluminum power is obtained; solid-liquid separation is carried out through a low-temperature centrifugal process, a pasty solid obtained after separation is treated through a freeze-drying process, and then graphene oxide / aluminum composite dry powder is obtained; and the graphene oxide / aluminum composite dry powder is subjected to heat reduction in Ar / H2 mixed gas, and finally the graphene / aluminum composite material is obtained. The prepared graphene / aluminum composite material has the advantages of being high in strength, low in heat expansion factor and the like, and the specific stiffness and specific strength factors are obviously increased; and the preparation method is simple and efficient, and industrial production and application can be achieved easily.
Owner:TANGSHAN JIANHUA TECH DEV
Nano modified cement-based underwater non-dispersible material and preparation method thereof
The invention belongs to the fields of water conservancy engineering, buildings, bridges, sea bank revetments, and the like, and particularly relates to a nano modified cement-based underwater non-dispersible material and a preparation method thereof. The material is prepared from cement, mineral powder, silica fume, a superplasticizer, a defoamer and other materials, a certain amount of nano-SiO2or CaCO3 and a preferred flocculant are added, the materials are mixed evenly through a mixer, and then quartz sand is added to obtain the nano modified cement-based non-dispersible material. According to the nano modified cement-based underwater non-dispersible material, the fluidity reaches 260 cm, the underwater self-leveling can be realized, good dispersion resistance is achieved while high fluidity is achieved, the content of suspended matter is lower than 80 mg / L, 1d strength is nearly 20 MPa, and 28 d strength is greater than 50 MPa, and the micro expansion effect is achieved. The nanomodified cement-based underwater non-dispersible material can be in the forms of dry powder, wet mixed mortar or concrete, and the like, can be made into dry powder materials, and can be directly used for underwater construction by being mixed with water added on site, large-scale production and application are achieved easily, and the application requirements of the fields of the water conservancy engineering, the buildings, the bridges, the sea bank revetments can be met.
Owner:闰镁科技(深圳)有限公司
Autonomous navigation positioning method based on polarization pose information coupling iteration
ActiveCN112066979ARealize solutionRealize concurrent calculation of real-time pose and poseNavigation by astronomical meansPhysicsSatellite
The invention relates to an autonomous navigation positioning method based on polarization pose information coupling iteration, and the method comprises the steps: firstly measuring a polarization angle through a polarization sensor, calculating a system sun vector, and converting the system sun vector into a sun vector under a geographic coordinate system; then, resolving the solar altitude angleand azimuth angle at the moment from the solar vector under the geographic coordinate system; calculating the solar declination through time, and calculating the longitude and latitude of the movingbody; updating the sun vector of the navigation system by using the position and the time, updating the sun vector and the gravity vector under the machine system by using the new measurement information, solving the three-dimensional attitude of the moving body through an attitude conversion direction cosine matrix, and updating the three-dimensional attitude of the moving body through two-step loopback iteration of position updating and attitude updating. Pose concurrent calculation with polarization as a unique external information source is realized. According to the method, polarization serves as a unique external information source, simultaneous calculation of the position and the attitude is achieved, the method can be suitable for navigation of a moving body under satellite denialand magnetic interference conditions, and the needed sensor is low in cost, small in size and easy to apply and implement.
Owner:BEIHANG UNIV
Non-oxidation non-reduction fire refining process for copper
ActiveCN101314819ASimple processEasy to operateRotary drum furnacesCrucible furnacesOxidation reductionEnergy consumption
The invention discloses a non-oxidation non-reduction fire refined copper process. The oxygen concentration in copper liquid at the converting endpoint ranges from 0.05 to 0.3 percent; the oxidation-reduction operation in an anode furnace is canceled; gas which does not react with copper is blown into the anode furnace and the copper liquid is mixed forcibly until refining operation endpoint is reached, and oxygen and impurities which are contained in the copper liquid originally react with the gas so as to remove the impurities and oxygen at the same time. The non-oxidation non-reduction fire refined copper process has simple technology, convenient operation, high productivity effect, and low energy consumption without a reducer, avoids black smoke pollution, and is suitable for the large-scale industrial production.
Owner:YANGGU XIANGGUANG COPPER
Method for preparing directionally-arranged SIC nanowire reinforced aluminum matrix composite material based on semi-solid extrusion
The invention relates to a method for preparing a directionally-arranged SIC nanowire reinforced aluminum matrix composite material based on semi-solid extrusion. The problem that by adopting conventional hot extrusion treatment, damage to SIC nanowires is serious in the directional arrangement process of the SIC nanowires is solved. The method comprises the steps that firstly, a non-directional SIC nanowire reinforced aluminum matrix composite material is prepared; secondly, the non-directional SIC nanowire reinforced aluminum matrix composite material and a hot extrusion die are preheated; and thirdly, the directionally-arranged SIC nanowire reinforced aluminum matrix composite material is prepared through semi-solid extrusion. According to the method, the SIC nanowire reinforced aluminum matrix composite material is subjected to hot extrusion treatment above a solid phase line and below a liquid phase line; the grain boundary of an aluminum matrix is melted, the aluminum matrix is located in the solid-liquid mixing state, constraining force to the SIC nanowires is small, and the SIC nanowires can achieve low-damage directional arrangement.
Owner:HARBIN INST OF TECH
Carbon-coated nickel sulfide electrode material and preparation method and application thereof
ActiveCN112018344AImprove conductivityEnsure structural stabilityMaterial nanotechnologyCell electrodesSulfidationNickel sulfide
The invention provides a carbon-coated nickel sulfide electrode material and a preparation method and application thereof. The preparation method comprises: preparing an ethylene glycol aqueous solution; adding glucose into the ethylene glycol aqueous solution until glucose is completely dissolved to obtain an ethylene glycol-glucose mixed solution; sequentially adding a nickel source and a sulfursource into the ethylene glycol-glucose mixed solution until the nickel source and the sulfur source are completely dissolved, and carrying out hydrothermal reaction until the reaction is finished toobtain a hydrothermal reaction product; and carrying out solid-liquid separation on the hydrothermal reaction product, washing and drying the obtained solid isolate, and calcining in a protective atmosphere to obtain the carbon-coated nickel sulfide electrode material. The preparation method of the carbon-coated nickel sulfide electrode material is simple, the material is easy to obtain, the reproducibility is high, no pollution is caused, the product structure is easy to control, the material reaches the nanoscale size, and industrial application and popularization are easy to achieve.
Owner:KUNMING UNIV OF SCI & TECH
Testing apparatus of conductivity and electrical equipment
ActiveCN105652096AAvoid Polarization EffectsGuaranteed accuracyResistance/reactance/impedenceMaterial resistanceSignal processing circuitsElectrical resistivity and conductivity
The invention provides a testing apparatus of conductivity and electrical equipment. The testing apparatus comprises a square wave generation source, a first filter circuit, a testing electrode unit, a current detection circuit, a switch circuit, and a signal processing circuit. To be specific, the square wave generation source is used for generating a square wave signal. The first filter circuit is used for carrying out filtering processing on a square wave signal to obtain a sinusoidal signal not including a direct-current component, wherein the sinusoidal signal is used as a testing voltage. The testing electrode unit includes at least three groups of testing electrodes connected in parallel and is connected to the first filter circuit; and the testing electrode unit is used for applying a testing voltage to a to-be-tested medium. The current detection circuit is used for detecting a current signal flowing through the testing electrode unit and converting the current signal into a voltage signal. The switch circuit controls a working state of each group of testing electrodes among the at least three groups of testing electrodes. The signal processing circuit determines a conductivity of a to-be-tested medium according to a voltage signal outputted by the current detection circuit. According to the technical scheme, on the premise that the testing electrode is prevented from being polarized, a conductivity of a to-be-tested medium is tested accurately and demands of different testing scenes can be satisfied.
Owner:FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD +1
Water glass solution containing graphene and preparation method thereof
InactiveCN105967197AGood application effectImprove thermal performanceAlkali metal silicatesCvd grapheneSolid content
The invention relates to a water glass solution containing graphene and a preparation method thereof. The water glass solution comprises the following components: water, R2O.nSiO2, and graphene. The preparation method comprises the following steps: solid R2O.nSiO2, an aqueous solution of oxidized graphene, and deionized water are uniformly mixed according to a solid content mass ratio 20-45:0.05-12:0-79; obtained mixed liquor is placed in a enclosed stirred reaction kettle for carrying out heating and pressurization treatment; after a reaction is completed, natural sedimentation is carried out for the mixed liquor in order to remove impurities, the part of liquid without impurities is transferred to a condensation tank, condensation is carried out to a corresponding baume at a certain temperature, and the water glass solution containing quantitative graphene is obtained. The water glass solution has the advantages of better applicability, enhanced thermal properties and water resistance, better corrosion resistance, and prolonged usage life of application to each field. The method has a simple process and high efficiency, and industrial production and application are easy to realize.
Owner:TANGSHAN JIANHUA TECH DEV
Composite caramel-flavour aroma spice, baking preparation method and application
InactiveCN112205659ARich fragranceRich and sweet aromaTobacco preparationBiotechnologyNicotiana tabacum
The invention discloses a composite caramel-flavour aroma spice, a baking preparation method and application. The composite caramel-flavour aroma spice is prepared by uniformly mixing and reacting thefollowing raw materials, by mass: 1.0-20.0 parts of tobacco leaves, 0.2-10.0 parts of saccharides and 0.1-10.0 parts of pure water. The tobacco leaf raw materials are shredded to obtain tobacco shreds, the tobacco shreds and the saccharides are evenly stirred, then pure water is sprayed into the mixture to be evenly mixed, then the mixture is baked in a baking oven preheated to 120-180 DEG C for0.1-40 min for a reaction, and after the reaction is finished, solvent extraction is conducted to obtain the spice. The composite caramel-flavour aroma spice is applied to cigarettes, inapplicable tobacco leaves, reconstituted tobacco leaves, cut stems and expanded cut tobaccos, has rich tobacco aroma and caramel aroma, and does not generate 4-methylimidazole.
Owner:CHINA TOBACCO SICHUAN IND CO LTD
Winding modular permanent-magnet motor
ActiveCN107359712AIncrease profitShorten the lengthMagnetic circuit rotating partsMagnetic circuit stationary partsMagnetizationTorque density
The invention provides a winding modular permanent-magnet motor. The winding modular permanent-magnet motor comprises a stator, a rotor and air gaps, wherein the stator comprises a stator core, armature windings, permanent magnets and magnetic conduction small teeth, large grooves are formed in the stator core, the permanent magnets and the magnetic conduction small teeth are arranged at groove openings facing the air gaps, the arc lengths of the permanent magnets and the magnetic conduction small teeth both are Pi, the magnetization direction of the permanent magnets are same, a positive winding and a negative winding of a single effective coil of each phase are arranged in two adjacent large grooves, N coils in the same phase are sequentially wound around adjacent 2N large grooves according to a single coil winding method, teeth among the grooves where the same phase winding is located are first teeth, teeth among different phase windings are second teeth, the rotor comprises rotor cores and gaps, the arc length distance between adjacent rotor cores is 2Pi, and an air gap is formed between the stator and the rotor. The motor employs a same-phase winding modular structure design, the winding structure is simplified, the length of an end part of the winding is shortened, the winding utilization ratio is improved, and the torque density is improved.
Owner:北京华晖恒泰能源科技有限公司
Non-oxidation non-reduction fire refining process for copper
ActiveCN101314819BAchieving zero emissionsSimple processRotary drum furnacesCrucible furnacesReducerCopper
Owner:YANGGU XIANGGUANG COPPER
Method for purification of monochloroacetic acid by catalytic distillation
ActiveCN108911968AHigh selectivityImprove efficiencyOrganic compound preparationChemical industryFixed bedCatalytic distillation
The invention discloses a method for purification of monochloroacetic acid by catalytic distillation. According to the method, trichloroacetic acid and dichloroacetic acid in a trichloroacetic acid, dichloroacetic acid, monochloroacetic acid and acetic acid mixture are converted into monochloroacetic acid by a fixed bed catalytic distillation column, the selectivity is over 98%, and the rest is the acetic acid. A catalyst is a noble metal catalyst supported on coal-based activated carbon. After preheating, the mixture and hydrogen enter the fixed bed catalytic distillation column from the middle and the bottom of the column respectively. Controllable dechlorination reaction takes place on the surface of the catalyst. Hydrogen chloride, by-product acetic acid and residual hydrogen are discharged from the top of the column, high-purity acetic acid can be obtained, and the monochloroacetic acid with higher boiling point is obtained from the bottom of the column. The purity of the monochloroacetic acid is over 99%.
Owner:XIAN CATALYST NEW MATERIALS CO LTD
Method for enabling novel low-eutectic ionic liquid to chemically fix carbon dioxide under normal pressure and temperature condition to synthesize cyclic carbonate
ActiveCN109970699AEasy to synthesizeLow priceOrganic compound preparationOrganic-compounds/hydrides/coordination-complexes catalystsEpoxyPhosphonium
The invention relates to a method for enabling novel low-eutectic ionic liquid to chemically fix carbon dioxide under the normal pressure and temperature condition to synthesize cyclic carbonate. Themethod includes the steps that the carbon dioxide and different substituent epoxy compounds serve as raw materials, the novel low-eutectic ionic liquid formed by synthesizing quaternary phosphonium bromide salt and aminophenol according to the molar ratio of 1:2-1:3 serves as a catalyst, and the corresponding cyclic carbonate is synthesized under the conditions that the use amount of the catalystis 5%-10% of the molar ratio of the epoxy compounds, the reaction pressure is 0.1 MPa, the reaction temperature is 25 DEG C, and the reaction time is 12-24 hours. The novel low-eutectic ionic liquid is simple and efficient in preparation, the raw materials are cheap and easy to obtain, the catalytic performance is excellent, and high-selectivity synthesis of the cyclic carbonate at normal temperature and pressure can be achieved. Meanwhile, use of toxic transition metal, volatile organic solvents and co-catalysts is avoided, the catalyst is easily separated from the product, and the catalyst belongs to environment-friendly catalysts.
Owner:QINGDAO UNIV OF SCI & TECH
Testing apparatus of conductivity and electrical equipment
InactiveCN105652092AAvoid Polarization EffectsGuaranteed accuracyResistance/reactance/impedenceSignal processing circuitsSquare waveform
The invention provides a testing apparatus of conductivity and electrical equipment. The testing apparatus comprises a square wave generation source, a first filter circuit, a testing electrode unit, a current detection circuit, a frequency multiplier circuit, and a signal processing circuit. To be specific, the square wave generation source is used for generating a square wave signal. The first filter circuit connected to the square wave generation source is used for carrying out filtering processing on a square wave signal to obtain a sinusoidal signal not including a direct-current component, wherein the sinusoidal signal is used as a testing voltage. The testing electrode unit includes one group of testing electrodes and is connected to the first filter circuit. The current detection circuit is used for detecting a current signal flowing through the testing electrode unit and converting the detected current signal into a corresponding voltage signal. The frequency multiplier circuit is used for carrying out frequency multiplication processing on the voltage signal. The signal processing circuit connected to the frequency multiplier unit determines a conductivity of a to-be-tested medium according to a voltage signal processed by the frequency multiplier circuit. According to the technical scheme, on the premise that the testing electrode is prevented from being polarized, a conductivity of a to-be-tested medium is tested accurately.
Owner:FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD +1
Organic phase-change microcapsule with high coating rate, high thermal conductivity and high thermal cycling stability, and preparation method thereof
ActiveCN113881404APrevent implosionIncrease coverageHeat-exchange elementsMicroballoon preparationPhase change enthalpyAlkane
The invention provides an organic phase-change microcapsule with high coating rate, high thermal conductivity and high thermal cycling stability, and a preparation method thereof, and relates to the field of phase-change microcapsule materials. According to the organic phase-change microcapsule, a dispersant aqueous solution, methyl methacrylate, a cross-linking agent, an initiator, modified silicon nitride and a C14-C25 straight-chain alkane are directly mixed uniformly, and are subjected to reaction polymerization, and by adjusting the reaction conditions and dosage and uniformly grafting the modified silicon nitride on the surface of the organic shell, the heat-conducting property of the organic shell is improved, and finally the purpose of improving the thermal property of the microcapsule is achieved. The heat conductivity of the prepared microcapsule reaches 4.80 W / m.K, the phase change enthalpy value is larger than or equal to 210 J / g, the phase change enthalpy value is larger than or equal to 200 J / g after 500 times of cold and heat cycles, the coating rate is 82.5% or above, and the microcapsule has the effects of being high in latent heat and good in heat cycle stability.
Owner:CHINA UNIV OF GEOSCIENCES (BEIJING)
Multi-layer boron nitride based RRAM device and preparation method therefor
InactiveCN105679785AThe electrical curve fluctuates greatlyDecline fastSolid-state devicesSemiconductor devicesEvaporation (deposition)Titanium electrode
The invention discloses a multi-layer boron nitride based RRAM device and a preparation method therefor. The RRAM device comprises a dielectric layer, a lower electrode and an upper electrode, wherein the dielectric layer adopts the multi-layer boron nitride; the lower electrode is a copper foil; the upper electrode adopts titanium alloy; the preparation method comprises the steps of (1) growing boron nitride by a chemical vapor deposition method to obtain a final boron nitride / copper foil sample, andthe substrate copper coil for growing the boron nitride is taken as the lower electrode of the device; and (2) performing evaporation on a titanium electrode and a gold electrode by an electronic beam evaporation instrument and a mask plate. Compared with the popular high-dielectric-material hafnium oxide device, the RRAM device provided by the invention is stable in electrical property; the device has simple preparation method, and contamination to samples caused by the common transfer ways of two-dimensional materials is avoided; the upper electrode is evaporated directly by using the mask plate, so that micro-machining means, such as photoetching are avoided; and therefore, the multi-layer boron nitride based RRAM device is suitable for industrial large-scale production and bright in prospects.
Owner:SUZHOU UNIV
Composite caramel aroma spice, extrusion puffing preparation method and application method of composite caramel aroma spice
The invention discloses a composite caramel aroma spice as well as an extrusion puffing preparation method and an application method thereof. The composite caramel aroma spice is prepared by uniformlymixing and reacting the following raw materials, by mass: 1.0-20.0 parts of tobacco leaves, 0.2-10.0 parts of saccharides and 0.1-10.0 parts of pure water. Specifically, the tobacco leaf raw materials are shredded to obtain tobacco shreds, the tobacco shreds and the saccharides are evenly stirred, pure water is sprayed into the mixture to be evenly mixed, then the mixture is put into an extrusionbulking machine which is preheated to 120-200 DEG C in a third area and preheated to 110-190 DEG C in a second area to be subjected to extrusion bulking reaction, extrusion bulking treatment is conducted 1-5 times, and spice is obtained through solvent extraction after reaction. The spice has rich tobacco fragrance and caramel fragrance, and can be applied to cigarettes, inapplicable tobacco leaves, reconstituted tobacco leaves, cut stems and expanded cut tobaccos.
Owner:CHINA TOBACCO SICHUAN IND CO LTD
Oligomeric viscoelastic surfactant, synthesis method and viscous acid formula
ActiveCN109337664AHigh degree of polymerizationLow critical micelle concentrationDrilling compositionDecompositionSynthesis methods
The invention relates to an oligomeric viscoelastic surfactant, a synthesis method and a viscous acid formula in the technical field of viscous acids in oil reservoir exploitation. The oligomeric viscoelastic surfactant is prepared by the following steps: firstly, taking organic amine and halogenated alkane as main raw materials, synthesizing a quaternary ammonium salt-containing polyhalogenated alkane intermediate; then, adding tertiary amine into a synthesis product in the first step, and continuing a synthesis reaction to obtain an oligomeric quaternary ammonium salt cationic viscoelastic surfactant. The oligomeric viscoelastic surfactant can replace the existing viscoelastic surfactants in the field of oil production engineering, has a plurality of quaternary ammonium salt cations on linking groups in comb-like distribution, has a high degree of polymerization, effectively reduces the critical micelle concentration, has relatively good thickening, anti-swelling, and drainage-promoting effects and makes a rock wetter; in addition, the surfactant structurally does not contain amide bonds, so that decomposition under a strong acid condition is effectively avoided and the application range in the oil field acidifying industry is widened.
Owner:CHINA PETROLEUM & CHEM CORP +1
Micro-nano scale multiphase flow process enhanced reaction device
PendingCN110420609AWide range of industrial applicationsIncrease profitProcess control/regulationMicro nanoVolumetric Mass Density
A micro-nano scale multiphase flow process enhanced reaction device includes a compressor, a feed pump, a micro-nano multi-phase flow generation device, and a multi-phase flow process enhanced reactor. According to fluid flux or hydraulic loading in the micro-nano multi-phase flow generation device, the multi-phase flow process enhanced reactor can be composed of two or more micro-nano multi-phaseflow micro-element generators connected in parallel. A dispersion medium generator and a base are disposed inside the multi-phase flow process enhanced reactor. Compared with conventional bubbling towers, packed beds and stirred tank type gas-liquid reactors, multi-phase fluid produced by the device can make the gas-liquid two specific surface area increase by 1-2 orders of magnitude to 10<4>-10<5> m<2> / m<3>, a liquid side total volume mass transfer coefficient kL[alpha] value in a gas-liquid two-phase reaction controlled by a liquid film can be significantly increased to a range of 0.5-10 s<-1>, and the device has obvious competitive advantages in terms of phase microscopic transmission efficiency, molecular diffusion transfer rate, gas-liquid phase ratio interfacial area, specific energy input density, comprehensive energy efficiency, device operation stability, safety guarantee, and the like.
Owner:杭州烃能科技研究有限公司
Polyamide acid aqueous sizing agent as well as preparation method and application thereof
ActiveCN103174026BThe preparation process is simple and reliableIncrease productivityCarbon fibresFiberPolyamide
The invention discloses a polyamide acid aqueous sizing agent as well as a preparation method and application thereof, and provides a polyamide acid aqueous sizing agent prepared from polyamide acid, a cationization reagent and deionized water in a self-emulsifying manner. The sizing agent can be used for obviously improving the interface bonding strength between a reinforced fiber and thermoplastic resin, and has the advantages of good film-forming property, high storage stability and the like. The polyamide acid aqueous sizing agent is simple and reliable in preparation process, high in production efficiency, and convenient to achieve industrial preparation and application.
Owner:SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
A walking excavator remote control system
ActiveCN103114623BFlexible disassemblyConvenient wireless remote control operationSoil-shifting machines/dredgersProgrammable logic controllerRemote control
The invention discloses a remote control system of a walking excavator, and belongs to the technical field of walking excavators. The remote control system is characterized in that an electronic controlled switching valve is serially connected into an original pilot control oil circuit and is used for opening or closing the hydraulic pilot oil circuit, then a proportional electromagnetic valve is connected between a hydraulic pilot control handle and pedal combination and a main control multi-way valve in parallel, relays (1) are respectively connected onto a circuit of a starting relay, a circuit of a flameout electromagnetic valve, a circuit of a loudspeaker and a circuit of a brake electromagnetic valve in parallel, and a remote control module is added to the remote control system and comprises a PLC (programmable logic controller), a transmitter and a receiver. An electronic control unit is introduced into the remote control system on the premise that merits of automatic operation and full-hydraulic pilot control flexible operation are kept, modification of a remote control function is facilitated, and the remote control system is simple in structure and low in cost. Besides, a group of relays (1) is connected onto the starting circuit, the flameout circuit, the loudspeaker circuit and the brake circuit in parallel respectively and are used for actuating remote control instructions to control basic electric functions, and the remote control functional module mainly comprises the transmitter, the receiver, the PLC and an accelerator actuator.
Owner:XCMG CONSTR MACHINERY
An Iterative Autonomous Navigation and Positioning Method Based on Coupling of Polarization Pose and Attitude Information
Owner:BEIHANG UNIV
Novel integrated device for igniting by atomizing fuel oil through steam
PendingCN111156502AStrong impact energyGuaranteed atomization effectFluidized bed combustionPilot flame ignitersFuel conservationCombustion
The invention provides a novel integrated device for igniting by atomizing fuel oil through steam. According to the novel integrated device for igniting by atomizing the fuel oil through the steam, the fuel oil is atomized through the steam, the atomization impact energy is high, then the atomization effect can be fully guaranteed, and the ignition success rate can be increased; the problems aboutthe unstable effect of mechanical atomization, the lowered atomization effect caused by low pressure of compressed air, the high cost of high pressure air, the insufficient in-plant gas source and the like are solved; due to the fact that atomized liquid drops of the fuel oil are relatively small, the combustion speed is high, the fullness of flames in a boiler is high, and radiation blind spotscan be effectively reduced; supplied oil is combusted thoroughly and completely, and the fuel oil is effectively saved; and the device is simple in structure, easy to manufacture, not high in materialand machining requirements, low in original investment and easy to implement and apply.
Owner:HUANENG CLEAN ENERGY RES INST
Group target detection method based on electromagnetic scattering characteristics and topological configuration
ActiveCN114419453AHigh precisionImprove connectivityCharacter and pattern recognitionRadio wave reradiation/reflectionPattern recognitionSynthetic aperture radar
The invention discloses a group target detection method based on electromagnetic scattering characteristics and topological configuration. The method comprises the following steps: step 1, receiving a dual-polarized SAR (Synthetic Aperture Radar) image; step 2, obtaining a polarization enhanced image; step 3, obtaining a mean filtering image; 4, selecting a segmentation algorithm, and processing the mean filtering image obtained in the step 3 by adopting the selected segmentation algorithm to obtain a first binary image; step 5, performing MRF segmentation on the mean filtering image to obtain a second binary image; step 6, performing target pixel clustering on the first binary image obtained in the step 4 by adopting a first-row and second-column clustering method to obtain a plurality of single targets; step 7, obtaining a plurality of single targets corresponding to the second binary image; 8, obtaining a plurality of target groups; and step 9, selecting the target group with the maximum confidence value as the detected target group. The method can meet the requirements of high-precision and real-time detection of the group targets in the SAR image in an actual application scene.
Owner:ROCKET FORCE UNIV OF ENG
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